Power Electronics Drive Technology -...

Training systems for basic and future oriented educationin natural science and engineering

Power ElectronicsDrive TechnologyExperimental Panel and Module System

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000

ELWE-Lehrsysteme has designed two experimental sys-tems to cover the extensive field of Power Electronics andDrive Technology: the Experimental Panel System andthe Experimental Module System.

The Experimental Panel System has been designed todemonstrate experiments during instruction. The panelsare equipped with large current flow charts and blockdiagrams which can be seen from a distance; they aremounted in three rows on a vertical experimental frame.

The Experimental Module System consists of easy tohandle, cost-effective modules which are suspended ona vertical mounting wall.

The devices on both systems are equipped with 4-mmsafety sockets. Movable parts, such as the shaft ends orthe slide of the linear unit, are protected against contact some of them with transparent covers so that injuriescannot occur.

The machines used are all part of the ELWE machinerange of the types 100 W, 300 W or 1000 W.

DCChoppers

page 4

Servo Drivewith

Rotation Unit

page 30

FrequencyInverter withField-OrientedControl (FO)

FrequencyInverter

page 19

Pulse-WidthModulator

page 17

MainsRectifiers

page 8

300-W Machines300/1000-WMachines

300-WMachines

Experimental Panel System

Thyristorwith

Ring Circuit

Controllerfor

Mains Rectifiers

Power Unit for300-W Machines and Servo Drives

Accessories Measuring Instruments

2

Measuring Instruments . . . . . . . . . . 55

Accessories . . . . . . . . . . . . . . . . 63

Matrix . . . . . . . . . . . . . . . . . . . 64(Subjects / Equipment)

The matrix on page 64 gives an extensive overview of theequipment, the accessories, the measuring instrumentsand the experimental manuals required for the individualexperimental subjects.

Servo Drivewith

Linear Unit

ServoDrive

page 52

FrequencyInverter

page 46

MainsRectifiers

page 37

FrequencyInverter with

Field-OrientedControl (FO)

FrequencyInverter

page 19

100/300-W Machines1000-W Machines

Power Unit for1000-W machines

Four-QuadrantDC Drive

Accessories, Measuring Instruments,Experimental Manuals

Experimental Manuals

Experimental Module System

3

DC choppers comprise power semiconductors, which are usedas switches in a DC electrical circuit. They are important com-ponents in switch network sections, frequency transformers andcontrol switches in DC motors and electronically commutatedmotors (EC motors). Therefore a thorough knowledge of thefunction of the DC power unit is a pre-requisite for the intellectualexploration of many electrical current diagrams, and the optimal,expert application of a number of the instruments used in powerelectronics.

The DC-choppers equipment developed by ELWE Lehrsystemeallows a thorough and visible demonstration of the functionaldependencies between the electrical DC chopper volumes andthe standard power semiconductors and load types.

The experimental manual may be used both by instructors forvisualising the fundamentals being taught, and by the student inlaboratory practicals using the maximum degree of self-reliance.

The DC Choppers

The equipment excels in the following important areas of performance:

The use of application specific masks guarantees a compact,easy-to-navigate and clearly visible experimental set-up, aswell as safety of use.

The control unit with its control functions and the power unitof the DC chopper are set up separately, as commonlyindicated on the circuit diagrams of industrial-type devices.

Signal transmission between control and power units allowsa choice between the classical two-wire cable or the modernoptical-fibre link.

The control unit allows four circuit variants to drive the appa-ratus: manual, via analogue inputs 0 ... 10 V DC, via 8 bit PLCor PC inputs or by using the built-in speed control withsecondary current control for DC drives.

Power unit 1 contains the four most commonly used powersemiconductors: Darlington Transistor, GTO, FET, IGBT.

Power unit 2 contains the classic thyristor with ring circuit.

The two power units may be used both with 100 W and 300 Wmachines.

All signal transmissions in valve currents and load currentscan be measured and traced on an oscilloscope - whileelectrically isolated and disconnected from the mains supply.

4

consisting of:

Control unit P 10.41 10 10 410

The control unit allows four circuit varieties to drive the powersemiconductors:

manual control of duty rating and frequency current control with reference input variable current control with 8 bit digital / analogue converter input speed control with secondary current control

The manipulated variable y is transmitted to the power unit eithervia a two-wire cable or via an optical-fibre cable. All connectionand measuring points lead to 4-mm safety sockets. The panelcontains the power supply unit for the instrument transformerson the power unit P 10.42.

Experimental Manual "DC Choppers" 52 10 042

Basic Equipment "DC Choppers" TG 10.42 01 10 400

Control unit P 10.41

DC chopper with MOS-FETControl with resistive loadControl with mixed loadControl with motor load

DC chopper withdifferent power semiconductors

DC chopper with thyristorcontrol with resistive load

DC chopper with mixed load (RL-load)and two-position control

DC chopper with motor loadand speed control with secondary current control

The fully comprehensive experimental manual is methodically demanding and removes the need for wide-ranging preparations.Numerous questions which allow intellectual exploration of the test results enable good control of the learning progress.

The 'DC choppers' experimental manual includes the following experiments:

ControlClock frequency: variable from 0.5 ... 25 kHzDuty rating: variable from 0.1 ... 1

Current controlTwo-position controller,Current limiting, variable from 0 Imaxx input: 0 ... 10 V DCRi: 100 k

Rotational frequency controlPI controller, Kp and Tn separately variableKp = 1 ... 48, Tn = 0.05 ... 0.5 sThe I element can be switched off.x input for the rotational frequency signal: 0 ... 90 V DCRi: 80 k

8-bit digital/analogue converterLevel for PLC signals: low 7 V, high 14 VLevel for PC signals: low 0.8 V, high 2 VMaximum level: 30 V DCThe level can be selected with a jumper plug.

Analogue inputVoltage: 0 ... 10 V DCRi: 10 k

Voltage supply: 230 V AC, 50(60) HzDimensions in mm: 319 x 297 x 120 (L x H x D)Mass: 2.1 kg

5

Power unit 1 P 10.42 10 10 420

The power unit contains four power semiconductor stages(with GTO, Darlington Transistor, FET, IGBT ), the appro-priate charge release networks, current-voltage-convert-ers as well as the receiver for control signal transmissionvia two-wire cables or optical waveguides. The powersemiconductors are protected by an internal current re-striction of 6 A and are also protected against overcurrentby a fuse. The current measuring sockets are electricallyisolated from the power circuit. The current-voltage con-verters are supplied with power by the power supply unitwhich is integrated in the control unit panel P 10.41.

All connections and measuring points lead to 4-mm safetysockets.

Power semiconductors

Max. frequency: GTO 2.5 kHzIGBT 5.0 kHzDarl. 10.0 kHzFET 20.0 kHz

Input voltage: 230 V DC, 5 A max.

Instrument transformer

for the control voltage: ratio 1:1for the control current: 0.1 A/Vfor the valve flow:

0.5 A/V for 300-W machines;0.13 A/V for 100-W machines selectable

Load of the transformers: 100 k min.

Voltage supplyfor the control electronics: 230 V AC, 50(60) Hz

Dimensions in mm: 440 x 297 x 160 (L x H x D)Mass: 4.0 kg

Mask VP 10.41.1 "Open-Loop Control" 11 10 411

Mask VP 10.41.2 "Closed-Loop Control" 11 10 412

Mask VP 10.41.3 "PC / PLC-Coupling" 11 10 413

Mask VP 10.41.4 "Analogue input" 11 10 414

Mask VP 10.42.1 "GTO" 11 10 421

Mask VP 10.42.2 "Darlington Transistor" 11 10 422

Mask VP 10.42.3 "FET" 11 10 423

Mask VP 10.42.4 "IGBT" 11 10 424

Optical waveguide 55 10 100

Power unit 1 P 10.42

Mask VP 10.41.1 Mask VP 10.41.2

Mask VP 10.41.3 Mask VP 10.41.4

Mask VP 10.42.1 Mask VP 10.42.2

Mask VP 10.42.3 Mask VP 10.42.4

Opticalwaveguide

6

Comprising:

Power unit 2 P 10.43 10 10 430

The power unit contains a DC chopper circuit, consisting of athyristor, damping thyristor and ring circuit, the appropriatecharge release network as well as current-voltage instrumenttransformers and the receiver for control signal transmission viatwo-wire cables or optical waveguides.

The power semiconductors are protected against overcurrent bya fuse. The current measuring sockets are electrically isolatedfrom the power circuit. The current-voltage instrument trans-formers are supplied with voltage from the power supply unitwhich is integrated in the control unit panel P 10.41.All connections and measuring points lead to 4-mm safetysockets.

Rectifier B6Uwith smoothing capacitors P 10.45 10 10 450

Uin: 160 V AC max.Uout: 250 V DC max.Iout: 6 A max., fuse T 6.3 ASmoothing capacitance: 1100 F, 385 VDimensions in mm: 159 x 297 x 110 (L x H x D)Mass: 1.1 kg

Three phase isolating transformer (see page 15) 10 10 020Resistive load P 10.8 (see page 15) 10 10 008Inductive load P 10.9 (see page 15) 10 10 009DC shunt-wound machine MSA 1 (see page 16) 30 17 100Connection mask for motor operation 31 15 101.1Connection mask for generator operation 31 15 102.1DC tachogenerator (see page 16) 31 17 001Coupling collar (see page 27) 31 00 000Coupling cover (see page 27) 31 00 003Shaft-end cover (see page 27) 31 00 005(2 pieces required)

Supplementary Equipment TG 10.4301 10 401

"Thyristor with Ring Circuit"

Essential Accessories

Power unit 2 P 10.43

Rectifier B6U

Power semiconductorMax. frequency: 500 HzInput voltage: 230 V DC, 5 A max.

Instrument transformerfor the control voltage: ratio 1:1for the capacitor voltage: ratio 100:1for the valve current:

0.5 A/V for 300-W machines;0.13 A/V for 100-W machines selectable

Load for the transformers:100 k min.

Voltage supplyfor the control electronics: 230 V AC, 50(60) Hz

Dimensions in mm: 319 x 297 x 200 (L x H x D)Mass: 3.1 kg

7

Until the late 80s, it was common practice to use mainly DC drives with mains rectifiers for controlled drive systems.These drives are still used today for new installations with very high power. The maintenance and service of theseinstallations will therefore require skilled specialists with thorough basic knowledge of mains rectifiers.

The illustration shows an experimental set-up for the topicof mains rectifiers. A fully controllable three-phase bridgecircuit B6C is shown with an inductive load with DCresistance. The mains voltage is supplied via a three-phase transformer which also supplies the voltage for theelectronic control of the rectifier.

A four-channel isolating amplifier, an oscilloscope and aUM4 multiple measuring instrument are used as measur-ing instruments. The rectifier output voltage Ud is meas-ured. The change in phase voltages with respect to time,the rectifier output voltage and the rectifier output currentare shown on the oscilloscope.

Mains Rectifiers

8

The equipment used for the experiments on the "Mains rectifiers" topic which has been developed by ELWE TrainingSystems is outstanding in having many excellent performance characteristics:

Using only two experimental panels and the appropriate masks, fifteen different wiring systems for mains rectifierscan be investigated experimentally ranging from the simple one-way circuit M1 to the double rectifier (B6C) A (B6C)with DC resistance, inductive and motor loads (up to 1000 W).

The use of masks makes it possible to show bigger circuit arrangements, opened up and to a large extent visible.

The electrical connections to the experimental panels are made with a small number of 19-mm safety bridge plugs.The use of masks means that setting up and conversion are fast and so teaching time is used effectively onexperimental work.

All the points relevant to understanding the circuits, such as, for example, the gate, anode and cathode connectionsare accessible and may be used as measuring points via 4-mm safety sockets. For taking measurements of separatepotentials and for using the oscilloscope to examine the rectifier output current, a current-voltage transformer is builtin as a fixture in the rectifier power unit.

A control unit and a power unit for the tested rectifier circuit are set up on separate experimental panels. The controlsignals are transmitted with the aid of a 37-wire round cable. Since the potentials for the control and power unitsare separated directly at the rectifier, only safe low voltages of 15 V max. are transmitted with the 37-wire cable.

The use of masks, safety sockets and safety bridge plugs ensure a high degree of operational safety and accessibilityof experimental apparatus. The rectifiers themselves are overrated and additionally protected by fuses.

The experimental panels incorporate their own voltage source for the control electronics. Only the primary 230-Vvoltage is supplied by the three-phase transformer (P 10.20 or 67 15 270) using two jumper plugs or safety cables.

With the aid of the additional equipment "Controller for mains rectifier", experiments can be carried out on DCmachines using three-phase frequency control or current control. Five masks for the controller panel ensure a clearlyarranged and visible viewing of the signal flow charts from simple three-phase frequency control of two-quadrantdrives to three-phase control with secondary current control and reversing logic for four-quadrant drives.

The current and voltage curves at the rectifier are measured either with an isolating amplifier (eg. three-channelisolating amplifier M35 or four-channel isolating amplifier 14 00 340) and an oscilloscope or with a modern measuringinterface for the PC (e.g. measuring interface Comenius).

The gate terminals and the synchronisation voltage are electrically isolated and lead to a 37-pin Sub-D socket. Therectifier circuit can be controlled via the 37-pin socket using a TTL signal from a microcomputer or PC with aninterface.

9

The equipment 01 10 500 and the accessories arerequired to conduct the first 4 experiment groups.

Experiment Group 1

10.50.10 One-way rectification with a power diode

10.50.11 Single-pulse centre point circuit, uncontrolled(M1U)

10.50.13 Two-pulse, bridge circuit, uncontrolled (B2U)

Experiment Group 2

10.50.20 Three-pulse, centre point circuit (M3UK)

10.50.21 Six-pulse, bridge circuit (B6U)

Experiment Group 3

10.50.30 Thyristor

10.50.31 Single-pulse, centre point circuit, controlled (M1C)

10.50.32 Two-pulse bridge circuit, controlled (B2C),with resistive load

10.50.33 Two-pulse bridge circuit, controlled (B2C),with inductive load and with a mixed load

10.50.34 Two-pulse bridge circuit, controlled (B2C),with a resistive load with a countervoltage(with an active load)

10.50.35 Two-pulse bridge circuit, controlled (B2C),with a motor load

10.50.36 Single-pole, half controlled, two pulse bridge circuit(B2HK) with resistive load and inductive load

10.50.37 Twin armed, half controlled, two pulse bridge circuit(B2HZ) with resistive load and inductive load

Experiment Group 4

10.50.40 Three-pulse, centre point circuit, controlled(M3CK), with resistive load

10.50.41 Six-pulse, bridge circuit, controlled (B6C),with resistive load

The additional equipment 01 10 550 and the acces-sories are required to conduct experiment group 5.

Experiment Group 5

10.50.51 Armature voltage control of a direct-current drivewithout and with I x R-compensation

10.50.52 Armature voltage control of a direct-current drivewith secondary current control and I x R compen-sation

10.50.53 Rotational frequency control of a direct-currentdrive with tachogenerator

10.50.54 2-Q rotational frequency control with secondarycurrent control

10.50.55 4-Q rotational frequency control with secondarycurrent control

Experimental Manual "Mains Rectifiers" 52 10 052

Three pulse, centre point circuit (M3CK) with resistive load

Two pulse bridge circuit (B2C) with resistive load

Four-quadrant drive with the double converter (B6C) A (B6C)

10

consisting of:

Rectifier Control Unit P 10.51 10 10 051

The control unit generates the control impulses for all theone, two, three, four and six pulse power unit rectifiercircuits of the power unit P 10.52.4 masks show plan views of the respective circuits. Theconnection to the power unit is made by low voltagesignals via a 37-wire cable.

The control unit contains the following operating ele-ments:

a potentiometer to adjust the control angle = 0 ... 180

an analogue input to adjust the control angle using a refer-ence input transmitter or a rotational frequency controllerUext. = 0 ... 10 V fr = 180 ... 0Ri = 200 k

adjuster for the upper control angle limit(inverter step limit) W = 90 ... 180

adjuster for the lower control angle limit(rectifier step limit) G = 0 ... 90

change-over switch for single or double impulses(60 sequential impulse)

change-over switch for single or chained impulsesDuration of chained impulse: 0.7 ms

Switch for 30 control angle shift

The status of the function groups are displayed with LEDs.The power unit supplies the electrically separated syn-chronisation voltages via the 37-wire cable to the controlunit; the voltage for the control electronics is supplied in asimilar way.The control unit is equipped with an impulse switch for the4-quadrant operation of the double rectifier. Control iseffected with the aid of two cables from controller P 10.53.All input sockets are 4-mm safety sockets.

Dimensions in mm: 159 x 297 x 80 (W x H x D)Mass: 0.75 kg

Mask 10.51.1, single phase 11 10 501Mask 10.51.2, three phase 11 10 502Mask 10.51.3, single phase with toggle 11 10 503Mask 10.51.4, three phase with toggle 11 10 504

Free-running diode P 10.54 10 10 054

Peak voltage: 700 V DCMax. current: 10 ADimensions in mm: 99 x 297 x 80 (L x H x D)Mass: 0.34 kg

Equipment "Mains Rectifiers" TG 10.50 01 10 500

Rectifier Control Unit P 10.51

Free-running diode P 10.54

Mask 10.51.1 Mask 10.51.2

Mask 10.51.3 Mask 10.51.4

11

37-wire connection cable 55 10 051

to connect the control unit P 10.51 and the power unitP 10.52 electrically.

Rectifier power unit P 10.52 10 10 052

The power unit enables the investigation of 15 differentmains rectifier circuits.

With the help of 15 different masks, the current flow chartis shown and the respective connection and measuringsockets are made accessible for use.

All control impulses, outlet voltages and outlet currentscan be displayed on the oscilloscope through the use ofan isolating amplifier or a measuring interface. The peakvoltage limit is 400 V and the maximum current is 8 A peroutlet so that even 1000-W machines can be connected.

A second B2C or B6C circuit enables the 4-quadrantoperation of a motor. The active quadrant is indicated by4 LEDs.

All input, output and measuring sockets are 4-mm safetysockets.

The power unit is supplied with voltage by the three-phasetransformer (for 300-W machines) or the three-phasetransformer in a portable housing (art. no. 67 15 270 for1000-W machines).

The control electronics for the P 10.51 and P 10.52 aresupplied via a 230 V AC output of the transformer.


Mask 10.52.1, Diode . . . . . . . . . . . . . . . . . . 11 10 505

Mask 10.52.2, Thyristor. . . . . . . . . . . . . . . . 11 10 506

Mask 10.52.3, M3UA . . . . . . . . . . . . . . . . . . 11 10 507

Mask 10.52.2

Mask 10.52.1

Rectifier power unit P 10.52

Mask 10.52.3

12

Mask 10.52.4 M3UK . . . . . . . . . . . . . . . . . . . 11 10 508

Mask 10.52.5 M3CA . . . . . . . . . . . . . . . . . . 11 10 509

Mask 10.52.6 M3CK . . . . . . . . . . . . . . . . . . . 11 10 510

Mask 10.52.7 B2U. . . . . . . . . . . . . . . . . . . . . 11 10 511

Mask 10.52.8 B2HK . . . . . . . . . . . . . . . . . . . 11 10 512

Mask 10.52.9 B2HZ. . . . . . . . . . . . . . . . . . . . 11 10 513

Mask 10.52.10 B2C . . . . . . . . . . . . . . . . . . . 11 10 514

Mask 10.52.11 B6U . . . . . . . . . . . . . . . . . . . 11 10 515

Mask 10.52.12 B6HK . . . . . . . . . . . . . . . . . . 11 10 516

Mask 10.52.13 B6C . . . . . . . . . . . . . . . . . . . 11 10 517

Mask 10.52.14 (B2C) A (B2C) . . . . . . . . . . . 11 10 518

Mask 10.52.15 (B6C) A (B6C) . . . . . . . . . . . 11 10 519

Mask 10.52.4 Mask 10.52.5 Mask 10.52.6

Mask 10.52.7 Mask 10.52.8 Mask 10.52.9

Mask 10.52.10 Mask 10.52.11 Mask 10.52.12

Mask 10.52.13 Mask 10.52.14 Mask 10.52.15

13


"Controller for the Mains Rectifiers"

Controller P 10.53 Mask 10.53.1 Mask 10.53.2

Mask 10.53.3 Mask 10.53.4 Mask 10.53.5

consisting of:

Controller P 10.53 10 10 053

5 different controller structures can be investigated with the helpof 5 masks:

2-quadrant PI rotational frequency controller 2-quadrant PI rotational frequency controller

with PI current controller Armature voltage PI controller Armature voltage PI controller with PI current controller 4-quadrant PI rotational frequency controller

with PI current controller

The panel is fitted with the following functional units:Reference input:

2 ranges selected with a toggle switch:0 ... 10 V, 10 ... +10 V

Ramp-function generator, can be connected:integrating time t = 0.1 ... 100 s, 4 selectable ranges

Comparator:an inverting input, a non-inverting input

Rotational frequency controller:Kp = 1 ... 48, connectableTI (Tn) = 50 ... 500 ms, connectable

Attenuator for yn:Factor Vu = 0 ... 1, variable

Smoothing element with gain adjustment for xn:Factor Vu = 0.04 ... 0.12, variableupper frequency limit fgo = 20 ... 200 Hz, variable

Current controller comparator:an inverting input, a non-inverting input

An adaptive PI current controller with additional adjustable integratingtime for the intermittent current range:

KP = 0.1 ... 1, connectableTI (Tn) = 5 ... 50 ms, connectableTI = 0.5 ... 5 ms, connectableSwitching between PI and I regulating functions takes placeautomatically.

Rectifier with gain adjustment for xI:Factor Vu = 1 ... 10, variable

Absolute-value generator for yn:Input: 10 ... +10 VOutput: 0 ... +10 V

Changeover logic to control the current rectifier S1 or S2:two LEDs indicate the control state

All functioning units work in the normal voltage range 10 ...+10 V. 4-mm sockets are positioned at many points so that thesequence of effects can be shown and investigated.

The voltage is supplied by a built-in power supply unit.

Voltage supply: 230 V AC, 50(60)HzDimensions in mm: 440 x 297 x 100 (W x H x D)Mass: 2.6 kg

Mask 10.53.1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 10 5312-Q rotational frequency controllerMask 10.53.2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 10 5322-Q rotational frequency controller with secondary current controlMask 10.53.3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 10 5332-Q rotational frequency controller with IR compensation

Mask 10.53.4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 10 5342-Q rotational frequency controllerwith secondary current control and IR compensationMask 10.53.5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 10 5354-Q rotational frequency controller

14

For 300-W machines:

Three-phase isolating transformer 10 10 020with optical field rotation indication

Input: 3/N/PE 400 V AC (LL)Output: 3 x 90 V AC or 6 x 45 V AC; 1.5 A

Protection by circuit breaker1 x 230 V AC, 0.3 A1 x 230 V DC, 0.5 A

Optical operation indicators for L1, L2, L3,direction of rotational fieldDimensions in mm: 319 x 297 x 160 (W x H x D)Mass: 7.5 kg

Note:In order to operate the 300-W machine on all rectifier circuits with ratedpower, the device 67 15 271 (see page 63) can be alternatively used.

For 1000-W machine:

Three-phase transformer, 405 VA 67 15 270with optical field rotation indication

Input: 3/N/PE 400 V AC (LL)Output: 3 x 90 V AC or 6 x 45 V AC; 6 A

Protection by circuit breaker1 x 230 V AC, 0.3 A1 x 230 V DC, 1 A

Optical operation indicators for L1, L2, L3,direction of rotational fieldDimensions in mm: 358 x 285 x 280 (W x H x D)Mass: 27.3 kg

Resistive load P 10.8 10 10 008

1 resistor 25 , 100 W; fuse 2 A3 resistor 100 , 100 W; fuse 1 ADimensions in mm: 159 x 297 x 150 (W x H x D)Mass: 2.2 kg

Inductive load P 10.9 10 10 009

1 coil 100 mH, 6 A max.; tapped at 50 mHDimensions in mm: 159 x 297 x 110 (W x H x D)Mass: 5.0 kg

Measuring shunts P 10.2 10 10 002

to measure the current in load circuits.4 resistors 1 , 11 WDimensions in mm: 99 x 297 x 60 (W x H x D)Mass: 0.35 kg

Plug-in resistor 1 ; 3 W 12 40 91019-mm plug-in element with 1 measuring shunt to measurecurrent (3 parts are required)

Set of safety cables (not illustrated) 57 00 010

black: 4 x 10 cm, 2 x 45 cm,10 x 25 cm, 5 x 60 cm,6 x 35 cm, 5 x 100 cm

Set of safety connectors (not illustrated) 59 00 030

15 connectors, black (2 sets required)

Accessories for Equipment "Mains Rectifiers" TG 10.50

Three-phase isolating transformer P 10.20(for 300-W machines)

Three phase transformer in a portable housing(for 1000-W machines)

Resistive load P 10.8 Inductive load P 10.9

Measuring shunts P 10.2 Plug-in resistor 1 ; 3 W

15

From the ELWE machine programfor 300-W machines:

DC shunt-wound machine MSA1 30 17 100

Connection mask for motor operation 31 15 101.1Connection mask for generator operation 31 15 102.1


DC shunt-wound machine MSA 100(not illustrated) 30 27 100

Connection mask for motor operation 31 25 101Connection mask for generator operation 31 25 102

Shaft-end cover 31 00 005(2 pieces are required)

DC stabilizer 0 ... 240 V DC, 6 A 67 15 402with residual-current-operated circuit-breakerfor the voltage supply to a 300-W DC-machine.UA = 0 ... 240 V DC, stabilizedIA = 1 ... 6 A, permanent short circuit-proofUBr < 1 VMeasuring device for voltage displayVoltage supply: 230 V AC, 50(60)HzDimensions in mm: 287 x 285 x 280 (W x H x D)Mass: 9.2 kg

DC stabilizer 0 ... 240 V DC, 15 A 67 15 401with residual-current-operated circuit-breakerfor the voltage supply to a 1000-W DC machine.UA = 0 ... 240 V DC, stabilizedIA = 1 ... 15 A, permanent short circuit-proof2 measuring devices for voltage and current displayVoltage supply: 3 x 230 V AC, 50(60)Hz; CekonDimensions in mm: 287 x 285 x 280 (W x H x D)Mass: 13.0 kg

DC tachogenerator 31 17 001A high-quality industrial tachogenerator with 2 shaft ends for measuringthe rotational frequency of electrical machines; the polarity of the outputvoltage depends on the sense of rotation.Output voltage: U = 20 V / 1000 rpmDimensions in mm: 180 x 210 x 230 (L x W x H)Mass: 3.1 kg

When using the 300-W machine:

Equipment "Pendulum machine" 03 17 061(see page 27)

When using the 1000-W machine:

Equipment "Pendulum machine" 03 27 060.1(see page 27)

DC shunt-wound machine MSA1Shaft-end cover

Connection mask 31 15 101.1

DC tachogenerator

DC stabilizer 0 ... 240 V DC, 15 A

DC stabilizer 0 ... 240 V, 6 A

Accessories for Supplementary Equipment TG 10.55

16

The illustration shows the P 10.0 Pulse-Width Modulatorand a two-channel oscilloscope. On the first channel ofthe oscilloscope, the generator voltages U1 (100 Hzsinusoidal) and U2 (1.6 kHz triangular) are shown, oneoverlaying the other.

The overlapping is produced in the pulse-width modulatorand the signal fed to the U1/U2 measuring socket. On thesecond channel, the sinusoidal current trace is shown foran inductive load with DC resistance.

Pulse-Width Modulation

17

In order to control the rotational frequency of electricalmachines with the smallest possible losses, the pulse-width modulation process is mainly used.

In DC machines the rotational frequency control isachieved by simply reducing the DC voltage in the square-wave voltage pulse. In three phase induction machinesthe pulse / pause ratios of the square-wave voltage pulsesmust be so varied that due to the inductive effect of themachine coils a sinusoidal current results. Using theexperimental panel "Pulse-Width Modulator" one mayvividly show both processes and investigate very clearlythe functional connection of the individual inputs with verylittle effort.

The experimental panel incorporates two generators. Onegenerator may be adjusted to produce a variable DCvoltage or alternatively a square-wave or sinusoidal refer-ence voltage. The frequency is 100 Hz.

The second generator produces a triangular voltage,whose frequency can be varied in six steps ranging from8 times to 256 times the frequency of the sine-wavereference voltage.

Comparing the two generator voltages with a comparatorproduces a pulsed voltage at the comparator output. Aresistive load and an inductive load can be connected withtwo toggle switches. Depending on the load and generatorvoltage selected, one produces either a pulsed currentwith an adjustable degree of modulation, an adjustabledirect current or a sinusoidal current.

The generator voltages, the pulse-width-modulated volt-age and the load current can be detected via 4-mm safetysockets. How they change with respect to time can beshown with an oscilloscope or with the help of a measuringinterface (eg. the measuring interface "Comenius") and aPC.

Specifications:

Generator IFrequency: 100 HzWaveform: sinusoidal, square, DCVoltage U1(pp): 0 ... 10 V adjustable

Generator IIFrequency: 800 Hz

1.6 / 3.2 / 6.4 / 12.8 / 25.6 kHzVoltage U2(pp): 10 VMeasuring signals: U1, U2; U1 and U2 superimposed,

Chopper frequency f variable

ComparatorVoltage Ua(pp): 10 V max.Resistive load: 100 , 200 , 300 selectableInductive load: 10 mH and 2 mH connectable

Voltage supply: 15 V DCDimensions in mm: 259 x 297 x 100 (W x H x D)Mass: 1.15 kg

Voltage supply 15 V DCe.g. DC stabilizer P 9.01 10 09 100to supply the pulse-width modulator P 10.0 with power.

UA = 15 V, stabilized, free of earth potentialIA = 1.5 A, permanent short circuit-proofRI < 20 m2 LED displays for current limitingVoltage supply: 230 V AC, 50(60)HzDimensions in mm: 159 x 297 x 140 (WxHxD)Mass: 2.7 kg

The Pulse-Width Modulator P 10.0 10 10 000

Additionally Required

Pulse-width modulator P 10.0

DC stabilizer P 9.01

18

Due to fast advances in the field of micro-processing andpower semiconductors, the use of frequency inverters forthe adjustment of rotational frequencies for three-phasedrives has gone up rapidly since 1985.

Today, drives with frequency inverters and asynchronousmachines have features which are equally good as thoseof conventional drives or even better. Therefore, moderndrives are nowadays usually equipped with frequencyinverters.

Depending on the individual requirements for drives, thereis a choice of frequency inverters with three differentopen-loop and closed-loop control procedures to controlthe power semiconductors.For most drive processes or simple conventional driveprocesses, i.e. without high requirements as to the dy-namic control response, frequency inverters with U = f (f )characteristic control systems are used. In this kind ofprocess the voltage within the adjusted range is increasedproportionally to the frequency. The torque cannot beinfluenced directly. Sudden load and torque changes arehardly damped.

Frequency Inverter

19

A similarly good dynamic behaviour at load and rotationalfrequency changes as with separately excited DC ma-chines can be achieved with the field-oriented control(FOC) method or the so-called direct torque control (DTC)method.We distinguish between sensor-free field-oriented controland field-oriented control with exact feedback of the rotorposition of the asynchronous motor to the frequencyinverter.Optimum characteristics are achieved with the feedbackof the rotor position although it is then necessary to equipthe motor with an appropriate sensor, e.g. with an incre-mental decoder for high demands. The frequency invertermust also be able to analyse the indicated rotor position.

Based on modern industrial components, ELWE has de-veloped an experimental panel system for drives withfrequency inverters that have different power features.

A power supply unit with IGBT transistors can be operatedselectively with three control units:

Control unit "Frequency inverter U = f (f )"

Control unit "Frequency inverter with field-oriented control"

Control unit for servo drives with electronically commutatedmotor

Control and power unit can be connected fast and safelywith a multi-wire cable. Communication modules, that canbe plugged on the control units (operators), allow you toinclude all bus systems that are relevant to advanceddrive engineering.

An experimental module system with these components,but without separate control and power units, has beendeveloped for practical exercises.

Experimental Manual "Frequency Inverter U = f (f )" 51 10 062

Experimental Manual "Frequency Inverter FO" 51 10 052

Standard values of the frequency inverter

Setting parameters to the frequency range

Type point (rated frequency)and U = f (f ) characteristic curve

M = f (n) characteristic curves of the squirrel-cage inductionmotor dependent on the frequency and boost of the inverter

M = f (n) characteristic curves of the squirrel-cage inductionmotor dependent on the frequency and slip compensation ofthe inverter

Reluctance motor on the frequency inverter

Starting moment, acceleration and delay

Frequency inverter with brake chopper

Frequency inverter with DC brake

Parameter setting with a PC

Visualisation with a PC

Parameter setting of the frequency inverterin the application mode

Frequency inverter and vector visualizer unit

Frequency inverter with rotational frequency controller

The experimental manual includes the following experiments:

Motor adjustment

Standard values of the frequency inverter

Setting parameters to the frequency range

M = f (n) characteristic curves of the squirrel-cage inductionmotor dependent on the frequency of the inverter

Starting moment, acceleration and delay

Frequency inverter with brake chopper

Parameter setting with a PC

Visualisation with a PC

Parameter setting of the frequency inverterin the application mode

Frequency inverter and vector visualizer unit

Frequency inverter with position controller


20

consisting of:

Control unit "Frequency inverter" P 10.75 10 10 075

The control unit is connected to the power unit P 10.71 by meansof the connection cable LT/ST. It is used to control three-phaseasynchronous motors. In order to control rotational speed anincremental encoder or DC tachogenerator is necessary.

The unit has the following features of performance:

PI-control for rotational speed voltage supply via the power unit P 10.71 electrically isolated to the power unit internal and external analogue setpoint input of -10 ... +10 V

for speed incremental encoder input DC-tachogenerator input, 20 V of 1000 rpm,

100 V DC max. programmable analogue and digital I/Os 2 relay outputs, 2 changeover contacts, 250 V AC, 0.2 A max. selection between customer mode (with 24 selectable or

variable parameters) and application mode (with variousadditionally variable parameters)


Connection cable 55 00 307

to connect the PTC terminals of the power unit P 10.71 (if notusing a motor with an integrated PTC resistor).

Length: 75 mmPlug: d = 2 mmColour: brown

In order to study the main functions of the frequency inverter, itis necessary to use a three-phase squirrel-cage induction motor,possibly insulating class F, that is operated with at least 230 V.

The following motor from the ELWE program for 300-W ma-chines is the most favourable:

Three-phase induction motorwith squirrel-cage rotor, 230/400 V 30 17 650Connection mask 31 15 651.1

In order to conduct all experiments that are described in theexperimental manual or to examine all significant features of thefrequency inverter, the connected motor must be equipped witha gyrating mass or a variable load. For some of the experimentsit is also necessary to use a three-phase reluctance motor(300-W rating).

Basic Equipment "Frequency Inverter U = f (f )" TG 10.7101 10 701

for 300-W Machines

Necessary Accessories

Control unit "Frequency inverter" P 10.75


Three-phase induction motor with squirrel-cage rotor, 230/400 V

21

consisting of:

Control unit "Frequency inverter" P 10.76 10 10 076

The control unit is connected to the power unit P 10.72 by meansof the connection cable LT/ST. It is used to control three-phaseasynchronous motors. In order to control rotational speed anincremental encoder or DC-tachogenerator is necessary.


PI-control for rotational speed voltage supply via the power unit P 10.72 electrically isolated to the power unit internal and external analogue setpoint input of -10 ... +10 V

for speed incremental encoder input DC-tachogenerator input, 20 V of 1000 rpm,

100 V DC max. programmable analogue and digital I/Os 2 relay outputs, 2 changeover contacts, 250 V AC, 0.2 A max. selection between customer mode (with 24 selectable or




to connect the PTC terminals of the power unit P 10.72 (if notusing a motor with an integrated PTC resistor).

Length: 75 mmPlug: d = 2 mmColour: brown

In order to study the main functions of the frequency inverter, itis necessary to use a three-phase squirrel-cage induction motor,possibly insulating class F, that is operated with at least 400 V.

The following motor from the ELWE program for 1000-W ma-chines is the most favourable:

Three-phase induction motorwith squirrel-cage rotor, 400/690 V 30 27 600Connection mask 31 25 601

In order to conduct all experiments that are described in theexperimental manual or to examine all significant features of thefrequency inverter, the connected motor must be equipped witha gyrating mass or a variable load. For some of the experimentsit is also necessary to use a three-phase reluctance motor(1000-W rating).

Basic Equipment "Frequency Inverter U = f (f )" TG 10.7701 10 707

for 1000-W Machines

Necessary Accessories

Control unit "Frequency inverter" P 10.76


Three-phase induction motor with squirrel-cage rotor, 400/690 V

22

consisting of:

Control unit"Frequency inverter FO" P 10.77 10 10 077

The control unit works with an advanced field-oriented controlsystem which conditions the rotor position of the asynchronousmotor. The rotor position of the asynchronous motor is deter-mined with the aid of an incremental decoder.The control unit is connected to the power unit P 10.71 or P 10.72by means of the connection cable LT/ST.


field-oriented control voltage supply via the power unit P 10.71 or P 10.72 electrically isolated to the power unit internal and external analogue setpoint input of 10 ... +10 V

for speed and programmable additional functions incremental encoder input incremental encoder output for positioning or synchronous

operation in case of several drives connectors for limit and reference point switches programmable analogue and digital I/Os relay output, changeover contact, 250 V AC, 0.2 A max. selection between customer mode (with 36 selectable or



Three-phase induction motorand incremental encoder MSA 67 30 17 670

Power: 0.55 kWVoltage: 230/400 V ACFrequency: 50 HzSpeed: 1400 rpmIncremental encoder: 2500 impulses per revolutionMotor protection: PTC resistorDimensions in mm: 340 x 210 x 270 (L x W x H)Mass: 13 kg

Connection cable "Incremental encoder" 15 10 029

Shielded connection cable with high-quality, industrial-typescrewed connections to connect the incremental encoder to thecontrol unit P 10.77.

Length: 2 m

Connection cablefor motor with multi-pin socket 15 10 028

Shielded connection cable with a high-quality, industrial-typescrewed connection and 2/4-mm plugs to connect the motorMSA 67 to the power unit P 10.71.

Length: 2 m

Basic Equipment "Frequency Inverter FO" TG 10.7201 10 702

for 300-W Machines

Control unit "Frequency inverter FO" P 10.77

Three-phase induction motorand incremental encoder MSA 67

Connection cable "Incremental encoder"

Connection cablefor motor with multi-pin socket

23

consisting of:

Control unit"Frequency inverter FO" P 10.77 10 10 077

The control unit works with an advanced field-oriented controlsystem which conditions the rotor position of the asynchronousmotor. The rotor position of the asynchronous motor is deter-mined with the aid of an incremental decoder.The control unit is connected to the power unit P 10.71 or P 10.72by means of the connection cable LT/ST.


field-oriented control voltage supply via the power unit P 10.71 or P 10.72 electrically isolated to the power unit internal and external analogue setpoint input of -10 ... +10 V

for speed and programmable additional functions incremental encoder input incremental encoder output for positioning or synchronous

operation in case of several drives connectors for limit and reference point switches programmable analogue and digital I/Os relay output, changeover contact, 250 V AC, 0.2 A max. selection between customer mode (with 36 selectable or



Three-phase induction motorand incremental encoder MSA 670 30 27 670

Power: 1.1 kWVoltage: 230/400 V ACFrequency: 50 HzSpeed: 1410 rpmIncremental encoder: 2500 impulses per revolutionMotor protection: PTC resistorDimensions in mm: 370 x 210 x 280 (L x W x H)Mass: 18 kg

Connection cable "Incremental encoder" 15 10 029

Shielded connection cable with high-quality, industrial-typescrewed connections to connect the incremental encoder to thecontrol unit P 10.77.

Length: 2 m


Shielded connection cable with a high-quality, industrial-typescrewed connection and 2/4-mm plugs to connect the motorMSA 670 to the power unit P 10.72.

Length: 2 m

Basic Equipment "Frequency Inverter FO" TG 10.7501 10 705

for 1000-W Machines

Control unit "Frequency inverter FO" P 10.77

Three-phase induction motorand incremental encoder MSA 670

Connection cable "Incremental encoder"

Connection cablefor motor with multi-pin socket

24

consisting of:

Power unit P 10.71 10 10 071

The power unit is connected to the control unit P 10.73, P 10.75or P 10.77 via the multi-wire connection cable LT/ST (art. no.15 10 015). It drives brushless DC motors (max. Mn = 1.2 Nm,max. of 6000 rev/min) with a short-time overload capability of5 x Mn and three-phase asynchronous motors (0.75 kW max. ata nominal current of 4 A and short-time peak current of 7.2 A).

All main measuring points are accessible via 4-mm safety sock-ets: output voltage and current, intermediate circuit current andvoltage plus the control pulses of the power semiconductors.The measuring points of the current and the control pulses areisolated from the power unit and the control unit.

The intermediate circuit has an integrated braking chopperwhich can be switched off by means of a jumper plug.

The temperature sensor (PTC) of the motor for monitoring thetemperature is connected via 2-mm safety sockets.

Several LEDs indicate the following operating states:

operation of the internal power supply unit motor is overheated,

temperature sensor has not been connected overcurrent overvoltage or undervoltage

Voltage supply: 230 V AC, 50(60) HzDimensions in mm: 440 x 297 x 220 (W x H x D)Mass: 7.0 kg

Connection cable LT/ST 15 10 015

to electrically connect the power unit to the control unit P 10.73,P 10.75, P 10.76 or P 10.77.

Interface operator 15 10 013

The operator is provided with a keyboard and an LED display tooperate and program the control units P 10.73, P 10.75, P 10.76or P 10.77 manually.

One control unit can additionally be programmed and operatedwith the PC via the RS232 interface of the operator.

Dimensions in mm: 70 x 85 x 40 (W x H x D)

Interface cable RS232 55 12 232Length: 2 m

Software "COMBIVIS" 50 10 001

to operate and set the parameters of the control units P 10.73,P 10.75, P 10.76 or P 10.77 and to visualise the measuredvalues.

3.5" disk.


"Power Unit for 300-W Machines or Servo Drives"

Power unit P 10.71

Interface cable RS232

Connection cable LT/ST

Interface operator


25

consisting of:

Power unit P 10.72 10 10 072

The power unit is connected to the control unit P 10.75 or P 10.77via the multi-wire connection cable LT/ST (art. no. 1510015). Itdrives three-phase asynchronous motors (2.2 kW max. at anominal current of 5.8 A and short-time peak current of 10.4 A).

All main measuring points are accessible via 4-mm safety sock-ets: output voltage and current, intermediate circuit current andvoltage plus the control pulses of the power semiconductors.The measuring points of the current and the control pulses areisolated from the power unit and the control unit.

The intermediate circuit has an integrated braking chopperwhich can be switched off by means of a jumper plug.

The temperature sensor (PTC) of the motor for monitoring thetemperature is connected via 2-mm safety sockets.

Several LEDs indicate the following operating states:

operation of the internal power supply unit motor is overheated,

temperature sensor has not been connected overcurrent overvoltage or undervoltage

Voltage supply: 3 x 400 V AC, 50(60) HzDimensions in mm: 440 x 297 x 220 (W x H x D)Mass: 7.5 kg

Connection cable LT/ST 15 10 015

to electrically connect the power unit to the control unit P 10.73,P 10.75, P 10.76 or P 10.77.

Interface operator 15 10 013

The operator is provided with a keyboard and an LED display tooperate and program the control units P 10.73, P 10.75, P 10.76or P 10.77 manually.

One control unit can additionally be programmed and operatedwith the PC via the RS232 interface of the operator.

Dimensions in mm: 70 x 85 x 40 (W x H x D)

Interface connecting cable RS232 55 12 232Length: 2 m


to operate and set the parameters of the control units P 10.73,P 10.75, P 10.76 or P 10.77 and to visualise the measuredvalues.

3.5" disk.


"Power Unit for 1000-W Machines"

Power unit P 10.72

Connection cable LT/ST

Interface cable RS232

Interface operator


26

To conduct all experiments described in the experimentalmanual or to study all significant features of a frequencyinverter, the connected motor must be equipped with agyrating mass or a variable load, such as a pendulummachine. For some of the experiments it is also necessaryto use a three-phase reluctance motor.

Equipment "Pendulum machine"

This equipment is very suitable for presenting the measuredvalues of rotational frequency, torque and mechanical shaftoutput to larger groups.The pendulum machine allows to load as well as to drive thetested machines in both senses of rotation. The characteristicscan thus be recorded in all four quadrants.Torque including its sign is measured by means of a strain gaugebridge. Rotational frequency and sense of rotation are deter-mined by means of an incremental encoder. There is an electri-cal connection to the control unit of the pendulum machine vianondetachable cables at the pendulum machine.The pendulum machine is protected against overload by meansof an integrated thermostatic switch.

It is possible to select the following functions at the control unit:

manual setting of rotational frequency via touch controlsup/down

manual setting of torque via touch controls up/down automatic recording of characteristics with freely selectable

start and stop speed frequencies external control via the 10-V input.

Specifications of the control unit:

Optional Accessories for the Frequency Inverter

Power class 300 W 1000 WRotational frequency ranges 1500 / 3000 / 6000 rpmTorque ranges 3 / 10 Nm 10 / 30 NmMeasuring rangesof mechanical shaft output

0.5 / 1.5 kW 2 / 6 kW

External control input 0 ... 10 V DCBreak contact for safety circuit 250 V AC max.; 0.2 AMake contact for starting an recorder 30 V DC max.; 1 AVoltage supply 230 V AC;

50(60) Hz400 V AC;50(60) Hz

Dimensions in mm (LxWxH) 470 x 280 x 280Mass 14 kg 15 kg

Power class 300 W 1000 WEquipment Art. no. 03 17 061 03 27 060.1consisting of:Pendulum machine 30 17 000 30 27 000

Nominal torque 8 Nm 20 Nmmax. speed 6000 rpm 6000 rpm

Dimensions in mm (LxWxH) 370x210x230 440x260x250Mass 17.3 kg 31.0 kgControl unitof the pendulum machine

67 10 609 67 10 610.1

for external measured value displays;conceived as a drawerfor the 19" power supply systemInstallation width: 84 PU* 84 PU*Housing for the control uni, portablet 67 15 084 67 15 084 1Display panel 10 15 009 10 25 900Coupling collar 2x 31 00 000 2x 31 00 000Coupling cover 2x 31 00 003 2x 31 00 003Shaft-end cover 2x 31 00 005 2x 31 00 005

* 1 PU = 1 partial unit = 5.08 mm = 0.2"

Note: The control unit of the pendulum machine is built into theportable housing at the factory.

Pendulum machine

Display panel

Control unit of the pendulum machine

Coupling collarCoupling coverShaft-end cover

27

Mask M 10.75.1 11 10 751Mask to be placed on experimental panel P 10.75 / P 10.76"Frequency Inverter U = f (f )" when using the application mode.

Application instructions F4 23 10 003Instructions for programming the experimental panel P 10.75 /P 10.76 "Frequency Inverter U = f (f )" in the application mode.

Mask M 10.77.1 11 10 771Mask to be placed on experimental panel P 10.77 "FrequencyInverter FO" when using the application mode.

Application instructions F4-F 23 10 004Instructions for programming the experimental panel P 10.77"Frequency Inverter FO" in the application mode.

Shielded connection cable 15 10 021to connect and shield machines with 4-mm sockets to thefrequency inverter. Length: 2m.

Bus operators that can be plugged onto the control unit of thefrequency inverter enable field bus communication with otherautomation equipment, such as a PLC system, or with the PC.The most common industrial systems are supported:

CAN Operator 15 10 022LON Operator 15 10 023PROFIBUS Operator 15 10 024RS485 Operator 15 10 014Dimensions in mm: 70 x 85 x 40 (L x W x H)Mass: 100 g

CAN cable, 2 m 15 10 033with terminators, to connect to the CAN operator.

PROFIBUS cable, 2 m 15 10 034with terminators, to connect to the PROFIBUS operator.

Equipment"External control and memory unit" 15 10 025

consisting of:Memory Operator 15 10 026 is plugged onto the control units replacing the interface

operator. keyboard and display for operating and programming control

units and the Combicard System. in the memory operator mode a complete equipment parame-

ter setting can be read, saved and copied to another controlunit. The equipment parameter setting remains stored evenin dead state.

Dimensions in mm: 70 x 80 x 40 (L x W x H)

Combicard System 15 10 027With the Combicard System and the memory operator as controlpanel, it is possible to read an entire parameter setting or to setparameters via the RS232 interface. The read parameter settingcan either be stored in the memory operator or on a memorycard.


Operators

External control and memory unit

Mask M 10.75.1

Mask M 10.77.1

Shielded connection cable

28

The starting and deceleration performance of drives es-sentially depends on the gyrating masses or the massmoment of inertia. The gyrating masses developed byELWE are solidly connected to the shafts so that it is forexample possible to study the effect of gyrating massesupon the starting and deceleration constants as well asupon the starting current.

Further interesting experiments can be carried out withthe gyrating masses that can be electrically started, iso-lated and braked abruptly in the isolated state. It is forexample possible to examine the fall of speed or theefficiency of rotational frequency control when an impactload is acting upon the drive.

Gyrating massdirectly connected to the shaft

for simulating heavy starting and energy store. Solid connectionbetween shaft and gyrating mass.

Power class ofelectrical machines 300/1000 W

Gyrating mass, 200 kgcm2 31 17 012Gyrating mass, 400 kgcm2 31 17 013Dimensions in mm (LxWxH) 320 x 210 x 240Mass: 200 kgcm2

400 kgcm218.3 kg22.8 kg

Gyrating mass, switched electromagnetically

for simulating heavy starting, energy store and shock load.Equipped with an electromagnetic coupling between shaft andgyrating mass. The gyrating mass can be coupled and decou-pled as well as braked electromagnetically during operation. Thecontrol is initiated with a toggle switch or the switching voltageof a PLC system.Required power supply: 24 V DC, 0.3 A.

Power class ofelectrical machines 300/1000 W

Gyrating mass, 200 kgcm2

switched electromagnetically31 17 010 1

Gyrating mass, 400 kgcm2

switched electromagnetically31 17 011 1

Dimensions in mm (LxWxH) 320 x 210 x 240Mass: 200 kgcm2

400 kgcm218.6 kg23.1 kg

Note:In the experimental manuals "Frequency Inverter" the gyrating mass31 17 011 is used.

Gyrating mass

Gyrating mass,switched electromagnetically

Gyrating Masses

Three-phase reluctance motor230/400 V

From the ELWE machine program::

Power class ofelectrical machines 300 W 1000 W

Three-phase reluctance motor,230/400 V

30 17 950 30 27 950

Connection mask 31 15 951 31 25 951Dimensions in mm (LxWxH) 270x230x230 310x240x240Mass 9.9 kg 15.0 kg

29

Servo Drives

The illustration shows a servo drive consisting of the experimental panels "Control Unit" and "Power Unit" as well asthe linear drive.

30


Servo drive with rotation unit

Illustration of the output voltages, currents and controlpulses

Illustration of the intermediate-circuit voltage, interme-diate-circuit current and the brake chopper controlpulses

Parameter setting of the servo control unit (delay andacceleration time, torque limit, speed indication)

Setting the parameters for speed control

Representation of the dynamic response

Setting the parameters of positions

Servo drive with linear unit

Illustration of the output voltages, currents and controlpulses

Illustration of the intermediate-circuit voltage, interme-diate-circuit current and the brake chopper controlpulses

Parameter setting of the servo control unit (delay andacceleration time, torque limit, speed indication)

Setting the parameters for speed control

Representation of the dynamic response

Setting the parameters of positions

Reference travel

Limitation of travel with positioning key

Setting the parameters for travel profiles

Experimental Manual "Servo Drives" 53 10 002

Servo drives have the highest dynamic response of allmodern drives. They enable a highly dynamic, exact andoverload-proof performance within a wide speed range.High requirements as to dynamic response, exact speed,constant torque, accurate synchronism or exact position-ing can be met without using extensive mechanical sys-tems. Possible applications are, for example, drives formachine tools, printing machines, packaging machinesand robots with high clock rates.

Servo drives consist of a servo motor and the servo-elec-tronic system. There are different common names orexpressions for the two components. If we disregardservo drives with three-phase asynchronous servo mo-tors, nowadays mainly electronically commutated motors,EC motors, synchronous permanent-magnet motors,brushless DC motors or synchronous AC motors areused. High-quality permanent magnets instead of theformer rotor windings enable a much smaller design withless moment of inertia. In order to guarantee a highdegree of constant torque and speed values even at lowspeeds, nowadays only sinusoidal excitation, i.e. noblock-type excitation, is used. The servo-electronic sys-tem must therefore know the exact rotor position at anytime. A resolver is often used as high-quality sensorsystem. The digital analysis of the resolver signals also

enables to gain pulse-shape signals for master positioncontrol and saves you using an additional sensor system.

For the servo-electronic system, which is often calledservo actuator, servo amplifier or servo controller, it isincreasingly common to use digital equipment with four-quadrant operation, communication interface and power-ful software with start-up help.

The training system for servo drive engineering devel-oped by ELWE contains the most advanced industrialcomponents, e.g. KEB components. To study the modeof functioning clearly, the control unit and the power unitof the industrial equipment have been separated andmounted on separate experimental panels. The controlpulses of the power transistors, for example, are availableat isolated 4-mm safety sockets and can be clearly repre-sented with an oscilloscope or via a measuring interface(e.g. measuring interface Comenius, see page 57 in bro-chure "Comenius"). Together with other control units (seepage 19) the power unit can also be used as a frequencyinverter. It is therefore possible to illustrate that the elec-tronic systems of different advanced drive concepts onlydistinguish in terms of their open-loop and closed-loopcontrol components.

31

consisting of:

Control unit "Servo drive" P 10.73 10 10 073

The experimental panel contains a high-quality control unit fromthe advanced servo-electronic field of a well-known Germanindustrial company. All inputs and outputs run to 4-mm safetysockets. The illustrated process flow chart shows the structureof the control loops with important control parameters beingassigned. The control unit is connected to the power unit P 10.71(see page 25) by means of the connection cable LT/ST. Thisconfiguration allows you to control the brushless DC motor,1 Nm, with resolver.


voltage supply via the power unit P 10.71 electrical isolation from the power unit internal and external analogue setpoint input of -10 ... +10 V

for speed and torque resolver input output for imitated incremental encoder signals connectors for limit and reference point switches via DIN

plugs 2 programmable analogue outputs 2 programmable digital outputs relay output, 1 changeover contact, 250 V AC, 0.2 A max. selection between customer mode (with 24 accessible pa-

rameters) and application mode (with 247 accesible parame-ters)

for simple positioning exercises with up to 8 positions at alinear or rotation unit the servo controller contains a position-ing module


Mask M 10.73.1 11 10 731

Mask to be placed on experimental panel P 10.73 "Control unitservo drive" when using the application mode.

Brushless DC motor, 1 Nm, with resolver 30 17 970

The motor is arranged on an aluminium section from the ELWErange "Electrical machines with 300-W rating". The rotation unit(see page 33) or the gyrating mass (see page 29), for example,can be solidly connected with the coupling half mounted to theshaft.

Rated speed: 6000 rev./minRated power: 0.5 kWRated torque: 0.8 NmContinuous standstill rated torque: 1.0 NmImpulse torque: 4 Nm max.Dimensions in mm: 260 x 210 x 200 (L x W x H)Mass: 3.7 kg

Basic Equipment TG 10.7301 10 703

"Servo Drive Control Unit and Motor with Rotation Unit"

Control unit "Servo drive" P 10.73

Mask M 10.73.1

Brushless DC motor , 1 Nm

32

Rotation unit with gyrating mass 31 17 017 1

The rotation unit is provided with a spiral line to show thedirection of rotation and the rotation of the motor itself. A scaleof degrees indicates the rotor position of the motor or the positionat rest. The rotation unit can also be operated in combinationwith 300-W asynchronous motors supplied by frequency in-verters.

Dimensions in mm: 110 x 210 x 240 (L x W x H)Mass: 3.6 kg


to connect the motor to the power unit.

Length: 2 m.

Connection cable "Resolver" 15 10 030

to connect the resolver to the control unit.

Length: 2 m.

Coupling collar 31 00 000

Coupling cover 31 00 003

Supplementary equipment TG 10.70 01 10 700

"Power unit for 300-W machinesor servo drives"

see page 25.

Application instructions S4 23 10 002

Instructions for programming the experimental panel P 10.73.

Gyrating masses (see page 29) for an effective study of thedynamic response of servo drives.


Optional Accessoriesfor the Equipment 01 10 703

Connection cable for motor with multi-pin socket

Connection cable "Resolver"

Coupling collarCoupling cover

Rotation unitwith gyrating mass

33

consisting of:

Control unit "Servo drive" P 10.73 10 10 073

The experimental panel contains a high-quality control unit fromthe advanced servo-electronic field of a well-known Germanindustrial company. All inputs and outputs run to 4-mm safetysockets. The illustrated process flow chart shows the structureof the control loops with important control parameters beingassigned. The control unit is connected to the power unit P 10.71(see page 25) by means of the connection cable LT/ST. Thisconfiguration allows you to control the brushless DC motor,1 Nm, with resolver.


voltage supply via the power unit P 10.71

electrical isolation from the power unit

internal and external analogue setpoint input of -10 ... +10 Vfor speed and torque

resolver input

output for imitated incremental encoder signals

connectors for limit and reference point switches via DINplugs

2 programmable analogue outputs, programmable

2 programmable digital outputs, programmable

relay output, 1 changeover contact, 250 V AC max., 0.2 A

selection between customer mode (with 24 accessible pa-rameters) and application mode (with 247 accesible parame-ters)

for simple positioning exercises with up to 8 positions at alinear or rotation unit the servo controller contains a position-ing module



to connect the motor to the power unit.

Length: 2 m.

Connection cable "Resolver" 15 10 030

to connect the resolver to the control unit.

Length: 2 m.

Basic Equipment TG 10.7401 10 704

"Servo Drive Control Unit and Motor with Linear Unit "

Control unit "Servo drive" P 10.73

Connection cable for motor with multi-pin socket

Connection cable "Resolver"

34

Linear unit ZRT 31 17 020

With this linear unit it is possible to study the use and the dynamicresponse of servo drives in an impressive way. The linear unitconsists of a high-quality synchronous belt drive with preciselyguided block. It is mounted to an aluminium section andequipped with a ruler and sensors for the final position andreference values. The unit is driven by a brushless DC motor,1Nm, with resolver (for characteristic values see page 32).Synchronous belt drive and motor are solidly connected to theplanetary gear. A transparent protective cover with monitoringfunction guarantees high security. An additional incrementalencoder can be mounted.

Feed per turn: 180 mmMax. travel way: 700 mmTraversing speed: 3.6 m/s (5 m/s max.)Reduction ratio: i = 5Rated motor speed: 6000 rpmRated motor torque: 0.8 NmDimensions in mm: 1300 x 420 x 220 (L x W x H)Mass: 23 kg

Supplementary equipment TG 10.70 01 10 700"Power unit for 300-W machines or servo drives"see page 25.

Mask M 10.73.1 11 10 731Mask to be placed on experimental panel P 10.73 "Control unitservo drive" when using the application mode.

Application instructions S4 23 10 002Instructions for programming the experimental panel P 10.73"Control unit servo drive" in the application mode.


Mask M 10.73.1

Optional Accessoriesfor the Equipment 01 10 704

35

Bus operators that can be plugged onto the control unit of thefrequency inverter enable field bus communication with otherautomation equipment, such as a PLC system, or with the PC.The most common industrial systems are supported:

CAN Operator 15 10 022LON Operator 15 10 023PROFIBUS Operator 15 10 024RS485 Operator 15 10 014

Dimensions in mm: 70 x 85 x 40 (L x W x H)Mass: 100 g

CAN cable, 2 m 15 10 033

with terminators, to connect to the CAN operator.

PROFIBUS cable, 2 m 15 10 034

with terminators, to connect to the PROFIBUS operator.

Equipment"External control and memory unit" 15 10 025

consisting of:

Memory operator 15 10 026

is plugged onto the control units replacing the interfaceoperator.

keyboard and display for operating and programming controlunits and the Combicard System.

in the memory operator mode a complete equipment parame-ter setting can be read, saved and copied to another controlunit. The equipment parameter setting remains stored evenin dead state.

Dimensions in mm: 70 x 80 x 40 (L x W x H)

Combicard System 15 10 027

With the Combicard System and the memory operator as controlpanel, it is possible to read an entire parameter setting or to setparameters via the RS232 interface. The read parameter settingcan either be stored in the memory operator or on a memorycard.


Optional Accessories for the Equipments 01 10 703 and 01 10 704

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The experimental module system is a training system forstudents covering the subjects of mains rectifiers and4-quadrant DC drives. The mains rectifiers are built ofindividual diodes and thyristors and tested using meas-urements.First the specific knowledge on control engineering istaught on the basis of DC drives with single converters,such as armature voltage control or speed control. Thena complete 4-quadrant drive with a double converter isbuilt and tested.

The module system consists of individual experimentalmodules which are attached and fixed to a vertical mount-ing wall.

It is completely safe to conduct the experiments becausethe inputs of the three-phase line voltage are electricallyisolated and only 4-mm safety sockets and cables areused. For a better overview, the sockets and connectioncables have different colours according to their functions.

Furthermore, all low-voltage inputs and outputs are pro-tected against voltages of up to 230 V AC and the powersemiconductors are overdimensioned and equipped withvery quick acting fuses.

The three-channel isolating amplifier enables the electri-cal isolation and the simultaneous display of three dia-grams on the monitor of the oscilloscope so that the timedconnection between voltage, current and firing pulses canbe seen.

Mains Rectifiers and 4-Quadrant DC-Drivewith the Experimental Module System

37

The basic equipment U 10.1 "Power Electronics" 02 10 011 is necessaryto carry out the following experiment groups.

Experiment Group 10.1"Power converter valves"

This group contains experiments to become familiar with thefunctions of semiconductors used in power electronics:

Diode, thyristor, triac

Definitions, characteristic values,operational performance

Experiment Group 10.2"Power converter connections for rectifying"

This experiment group contains experiments to examine thestructure and the operating principle of uncontrolled rectifierconnections:

Single-way connection (M1U) Center-tap connection (M2U) Bridge connection (B2U) Star connection (M3U) Three-phase bridge connection (B6U) Double star connection (M6U)

The features, characteristics and the operational perfor-mance that are typical of these connections are deter-mined in experiments:

Evaluating the DC voltage Evaluating the direct current Examining the valve voltage Examining the valve current Examining the current-voltage curve

at inductive load Determining the ripple Determining the current conduction angle Determining the pulse number Examining the process of commutation Determining the commutation number Comparing the performance

of several power converter types

Experiment Group 10.3"Power converter connections for rectifying

and/or inverting"

This experiment group contains experiments to examine thestructure and the operating principle of controlled rectifier con-nections:

Single-way rectifier and inverter connections

One-pulse center-tap connection (M1C) Two-pulse center-tap connection (M2C) Three-pulse center-tap connection (M3C) Six-pulse center-tap connection (M6C)

The typical features of these connectionsare determined with the following experiments: Evaluating the DC voltage Evaluating the direct current Displaying the current-voltage curve

at resistive and inductive load Determining the delay angle Determining the control characteristic Examining the process of commutation

(natural commutation angle point)

Two-way rectifier and inverter connections

Double-way bridge connection (B2C) on resistive load Double-way bridge connection (B2C)

on inductive load Double-way bridge connection (B2C) on motor load Double-way bridge connection (B2C) on active load Single-pole controllable two-pulse bridge connection

(B2HK) Single-pair controllable two-pulse bridge connection

(B2HZ) Six-pulse bridge connection (B6C) Half-controllable six-pulse bridge connection with

free-wheeling arm (B6HKF)

Typical featuresare also determined with these experiments:

Evaluating the voltage and current Determining the current-voltage curve

at resistive, inductive and motor load Use of the free-wheeling diode (reverse voltage) Determining the delay angle and the control range

(rectifier and inverter stability limit) Measuring the control characteristic curve Comparing the pulsating and non-pulsating operation Determining the current conduction angle Determining the firing pulse string

Experimental Manual52 10 012

"Mains Rectifiers / DC Drives"

38

Experiment Group 10.4"AC Power Controller"

Generalised phase control connections

Single-phase bidirectional connection (W1C)with resistive load

Single-phase bidirectional connection (W1C)with inductive load

Three-phase bidirectional connection (W3C)with resistive load in delta connection

Three-phase bidirectional connection (W3C)with resistive load in star connection

The features, characteristics and the operational perfor-mance that are typical of these connections are deter-mined with the following experiments:

Evaluating the voltage and current Measuring the voltage diagrams

in three-phase connections Determining the controlled power

and the phase control reactive power Determining the conduction angle Measuring the control characteristic curve

Multi-cycle control systems(burst firing control)

Basic principle of the multi-cycle control system Temperature control of a resistance-type heater

using a multi-cycle control system

The typical features, characteristics and the operatingprinciple are determined:

Showing the connection between control voltageand operating period time

Determining the make and break time Determining the operating frequency Determining the power control range Viewing the power conversion factor Analysing the characteristics in the control circuit:

Control characteristic curveStep responseSystem time constantsProportional gain of the controllerIntegral-action time of the controllerOperating rangeRange of reference variables

Experiment Group 10.3Three-pulse star connection

Experiment Group 10.5Two-quadrant power converter connection

Experiment Group 10.4Temperature control of a resistance-type heater

using a multi-cycle control system

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The basic equipment sets U 10.1 and U 10.2 (art. no. 02 10 011 and 02 10 012) are necessaryto carry out the following experiment groups.

Experiment Group 10.5"Power converter connectionsfor an operation in 4 quadrants"

This group contains experiments with single and double con-verter connections which can be operated in all quadrants of theDC system:

One-quadrant converter connection

Operation in the 1st quadrant Determining the current and voltage curve Rectifier operation Motor operation at clockwise rotation Connection of the tachogenerator

Two-quadrant converter connection

Operation in the 1st and 4th quadrants Determining the current and voltage curve Voltage reversal Rectifier and inverter operation Motor and generator operation

at clockwise and anti-clockwise rotation

Two-quadrant converter connection

Operation in the 1st and 2nd quadrants Determining the current and voltage curve Current reversal Rectifier and inverter operation Motor and generator operation at clockwise rotation

Four-quadrant converter connection

Operation in the 1st, 2nd, 3rd and 4th quadrants Rotation, current and voltage reversal Power output Rectifier and inverter operation Motor and generator operation

at clockwise and anti-clockwise rotation

Experiment Group 10.6"DC drives with single power converterand variable rotational frequency"

These experiment groups are based on the knowledge of theprevious groups to examine the operating principle and thefeatures of complete connections for DC drives:

Power converter DC drivewithout rotational frequency control

Determining the driving characteristics Determining various operating modes Determining the operating diagram Measuring the characteristic curve

of the rotational frequency/voltage Measuring the characteristic curve

of the tachogenerator

Control of armature voltage

Voltage adjustment Smoothing of controlled variable Operation with control loop Optimising the control performance Changing the reference variable Changing the disturbance

Armature voltage control with I x R compensation

Measuring the armature current Applying auxiliary quantities

Rotational frequency control with tachogenerator

Optimising the control performance Use of the ramp-function generator

Rotational frequency control with tachogeneratorand secondary current control

Operation with current control loop Use of the absolute-value generator Current limitations

Experiment Group 10.7"DC drives with double power converter

and variable rotational frequency"

As in the experiments of the previous group, here the studentsset up complete circuits for DC drives for an operation in all fourquadrants of the DC system:

Rotational frequency controlwith secondary current control for rotation reversal

Operation in the 1st and 3rd quadrant Rotation reversal Actual-value integration of rotational frequency Time response in case of rotation reversal

Rotational frequency controlwith secondary current control for energy flow reversal

Operation in the 1st, 2nd, 3rd and 4th quadrant Rotation reversal with inverter operation Use of the reversing logic Time response in case of torque reversal

and rotation reversal Optimisation of the reversal times

40

consisting of:

Three-phase transformer 65 15 332

A three-phase transformer which is suitable for transformerconnections and for the voltage supply of equipment used in theexperiments on power electronics and drive engineering.

The direction of the field of rotation is indicated with two controllamps.

Output: 3 x 90 V AC or 6 x 45 V AC; 1.5 A1 x 230 V AC; 0.3 A1 x 230 V DC; 0.5 A

Equipped with: 1 3-pole one-way switch6 Control lamps3 Overcurrent releases1 Fuse17 Safety sockets

Voltage supply: 3 x 400 V AC, 50(60) HzDimensions in mm: 166 x 360 x 150 (L x W x H)Mass: 10.1 kg

Control unit, four-pulse BS 10.1 22 10 010

for all single-phase power converter connections; single pulseand pulse string operation selectable, input for pulse inhibitor.

Synchronising voltage: 24 ... 230 V ACInput control voltage: 0 ... 10 V DC (for 180 ... 0)Dimensions in mm: 100 x 150 x 50 (W x H x D)Mass: 0.2 kg

Control unit, six-pulse BS 10.2 22 10 020

for all three-phase power converter connections; single pulseand pulse string operation, integrated phase shifter connections(30), input for pulse inhibitor.

Synchronising voltage: 3 x 90 ... 163 V ACInput control voltage: 0 ... 10 V DC (for 180 ... 0)Dimensions in mm: 100 x 150 x 50 (W x H x D)Mass: 0.24 kg

Full-wave controller BS 10.3 22 10 030

for single-phase power converter connections, input for pulseinhibitor.

Synchronising voltage: 24 ... 230 V ACInput control voltage: 0 ... 10 V DC,

for pulse string length of 0 3 sDimensions in mm: 100 x 150 x 50 (W x H x D)Mass: 0.17 kg

Basic Equipment "Power Electronics" U 10.1 02 10 011

Three-phase transformer

Control unit, four-pulse BS 10.1

Control unit, six-pulse BS 10.2

Full-wave controller BS 10.3

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Setpoint generator BS 10.4 22 10 040

to be connected to the control devices. Adjustment of the delayangle or the reference variable in controller circuits. Additionalenable input.

Output control voltage: 0 ... +10 V or -10 ... +10 V,continuously variable


Diode 700 V, 5 A BS 10.5 22 10 050

with RC circuit. (6 pieces per equipment)


Thyristor 800 V, 5 A BS 10.6 22 10 060

with RC circuit. (8 pieces per equipment)


Triac 800 V, 5 A BS 10.7 22 10 070

with RC circuit.


Measuring shunt, 1 BS 10.9 22 10 090

Resistor 1 , 3 W, 1 %, with 4-mm measuring sockets.(3 pieces per equipment)


Load BS 10.8 22 10 080

1 Resistor, 25 , 100 W, fuse 2 A2 Resistors, 100 , 100 W, fuse 1 A1 Coil 50 mH, 3 A, fuse 2 A1 Heating resistor, 280 , 7 W, fuse 0.16 A1 Temperature sensorOutput voltage: U (25 C) = 0 V, U = 0.15 V/KDimensions in mm: 130 x 270 x 140 (W x H x D)Mass: 3.0 kg

PI controller BS 10.11 22 10 110

Proportional-integral controller with series-connected, triplesumming unit (1 input with attenuator).

Proportional gain: 1 ... 500Integral-action time: 10 ms ... 100 sDimensions in mm: 100 x 150 x 60 (W x H x D)Mass: 0.2 kg

Delay angle limiter BS 10.12 22 10 120

Adjuster for min > G and for max < W.


Load BS 10.8

Diode 700 V, 5 A BS 10.5 Thyristor 800 V, 5 A BS 10.6

Triac 800 V, 5 A BS 10.7 Measuring shunt, 1 BS 10.9

Setpoint generator BS 10.4

PI controller BS 10.11 Delay angle limiter BS 10.12

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Lamp socket E14 BS 4.6.3 22 04 061Three lamp sockets E14.


Filament lamp E14, 230 V, 60 W 59 50 760matt (3 pieces per equipment)

Plug-in element "Capacitor" 12 42 6100.1 F, 400 V.

Set of miniature fuses FF4 26 90 400Set of miniature fuses M1 26 94 100Set of miniature fuses M2 26 94 200

Set of supply cables 55 10 0003-pole special cable for the voltage supply of the experimentalmodules.

Set of safety cables 57 10 011Special set of cables sorted in colours, 2.5 mm2, for the equip-ment U 10.1.


DC shunt-wound machine MSA 01 30 07 100Connection mask for motor operation 31 05 101Connection mask for generator operation 31 05 102

or from the ELWE machine programfor 300-W machines:

DC shunt-wound machine MSA 1 30 17 100Connection mask for motor operation 31 15 101.1Connection mask for generator operation 31 15 102.1

DC stabilizer, 0 ... 240 V DC / 2 A 67 15 400with isolating transformer (for 100-W machines).

2 meters for the voltage and current displayUA = 0 ... 240 V DC, stabilizedIA = 0 ... 2 A, protected against continued short circuitUBR 1 VVoltage supply: 230 V AC, 50(60) HzDimensions in mm: 287 x 285 x 280 (W x H x D)Mass: 15.8 kg

DC stabilizer, 0 ... 240 V DC / 6 A 67 15 402with residual-current-operated circuit-breaker(for 300-W machines)

(see page 16)

Necessary Accessories for the Equipment U 10.1

Lamp socket E14 BS 4.6.3 Plug-in element "Capacitor"

DC shunt-wound machine MSA 01

DC stabilizer, 0 ... 240 V DC / 2 A

DC stabilizer, 0 ... 240 V DC / 6 A

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consisting of:

Current transformer, AC BS 10.10 22 10 1002 current transformers with integrated three-phase rectifiers.Input current: 6 A AC max.Output voltage: 12 V DC max.Dimensions in mm: 100 x 150 x 50 (W x H x D)Mass: 0.32 kg

PI controller BS 10.11 22 10 110Proportional-integral controller with series-connected,triple summing unit (1 input with attenuator).Proportional gain: 1 ... 500Integral-action time: 10 ms ... 100 sDimensions in mm: 100 x 150 x 60 (W x H x D)Mass: 0.2 kg

Absolute-value generator BS 10.13 22 10 130to generate absolute values of the input voltages.Input voltage: -10 V ... 0 ... +10 VOutput voltage: -10 V ... 0 ... -10 VDimensions in mm: 100 x 150 x 60 (W x H x D)Mass: 0.16 kg

Reversing logic BS 10.14 22 10 140Logic component to control the firing pulse changeover switch in four-quadrant operation. 2 LEDs to display the initial state.Dimensions in mm: 100 x 150 x 60 (W x H x D)Mass: 0.17 kg

Control pulse changeover switch BS 10.15 22 10 150to change over the firing pulses of rectifier and inverter records infour-quadrant current converter connections.Dimensions in mm: 100 x 150 x 50 (W x H x D)Mass: 0.23 kg

Ramp-function generator BS 10.16 22 10 160Generation of a ramp voltage, the amplitude is proportional to the heightof the input variable.Input voltage: -10 V ... 0 ... +10 VRamp integration time: 0.5 ... 5 sDimensions in mm: 100 x 150 x 50 (W x H x D)Mass: 0.15 kg

Universal current transformer BS 10.17 22 10 170to measure the armature current.Input current: 6 A max. (AC or DC)Output voltage: 12 V max., isolatedDimensions in mm: 100 x 150 x 60 (W x H x D)Mass: 0.17 kg

Voltage divider BS 10.21 22 10 210Division ratio of 20:1, electrically isolated between input and output.Input voltage: 200 V max.Dimensions in mm: 100 x 150 x 50 (W x H x D)Mass: 0.15 kg

Supplementary Equipment "Power Electronics" U 10.2 02 10 012

Current transformer, AC BS 10.10 PI controller BS 10.11

Absolute-value generator BS 10.13 Reversing logic BS 10.14

Control pulse changeover switchBS 10.15

Ramp-function generator BS 10.16

Universal current transformerBS 10.17

Voltage divider BS 10.21

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Matching amplifier BS 10.22 22 10 220Gain factor of 1 100, continuously variable. Additional inverting output,integrated smoothing element.Dimensions in mm: 100 x 150 x 60 (W x H x D)Mass: 0.19 kg

Two-circuit switch BS 4.2 22 04 020for the stepwise connection of generator load resistors.Dimensions in mm: 100 x 150 x 50 (W x H x D)Mass: 0.17 kg


DC shunt-wound machine MSA 01 30 07 100Connection mask for motor operation 31 05 101Connection mask for generator operation 31 05 102

or from the ELWE machine programfor 300-W machines:

DC shunt-wound machine MSA 1 30 17 100Connection mask for motor operation 31 15 101.1Connection mask for generator operation 31 15 102.1

Note:It is also possible to use a DC compound-wound or a DC multi-functionmachine instead of the DC shunt-wound machine (see the prospectus"Electrical Machines").

DC tachogenerator (for 100-W machines) 31 07 001A high-quality industrial tachogenerator with 2 shaft ends for measuringthe speed frequency of electrical machines; the polarity of the outputvoltage depends on the sense of rotation.Output voltage: U = 20 V / 1000 rpmDimensions in mm: 180 x 210 x 210 (L x W x H)Mass: 3.0 kg

DC tachogenerator (for 300-W machines) 31 17 001A high-quality industrial tachogenerator with 2 shaft ends for measuringthe speed frequency of electrical machines; the polarity of the outputvoltage depends on the sense of rotation.Output voltage: U = 20 V / 1000 rpmDimensions in mm: 180 x 210 x 230 (L x W x H)Mass: 3.1 kg

Coupling collar (2 pieces required) 31 00 000

Coupling cover (2 pieces required)(for 100-W machines) 31 00 002(for 300-W machines) 31 00 003

Shaft end cover (2 pieces required)(for 100-W machines) 31 00 004(for 300-W machines) 31 00 005

Set of safety cables 57 10 012Special set of cables sorted in colours, 2.5 mm2,for the equipment U 10.2.

Necessary Accessories for the Equipment U 10.2

Matching amplifier BS 10.22 Two-circuit switch BS 4.2

Coupling collar Coupling cover Shaft end cover

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