Seminar Starting Squirrel Cage Motors March 99. Electronic soft starters Part PresentationSlides 1...

SeminarStarting Squirrel Cage Motors

March 99SOLCON

SOLCON

Electronic soft starters

Part Presentation Slides

1 Starting AC Motors 3 - 22

2 Electronic soft starters 23 - 36

3 Digital soft starter “RVS-DN” 37 - 132

4 Analog soft starters “RVS-N“ 133 - 139

5 Analog soft starter “Solstart” 140 - 143

SOLCON

Starting the motor

Three basic methods for starting squirrel cage motors :

* Full voltage - Direct On Line (D.O.L.)

* Reduced voltage - Electro mechanical methods

* Reduced voltage - Electronic methods

SOLCON

Direct On Line (D.O.L.) Starting

Starting Voltage - Full voltage at starting 100% Un

t

Un

SOLCON

Starting Current - Typically 500-800% In, depends on motor design.

RPM

In

Istart

Direct On Line Starting

SOLCON

* Starting Torque (M start) - Typically 150 - 180% Mn

* Max Torque (Mmax) - Break Down Torque can reach 220% Mn

Mstart

RPM

M operationMn

Mmax

Load


SOLCON

Acceleration Torque - The difference between motor and load torque's,

determines the Acceleration Time.

M load

M acceleration


SOLCON

Start Time - the high Acceleration Torque results in fast acceleration of

motor speed, typically less than 1 sec.

Nn

t


SOLCON


1 sec.

Current Inrush

SOLCON

Mechanical Shock

1 sec.


SOLCON

Reducing Starting Current & Torque

Reducing Inrush Current is essential :

* When starting from weak power supplies like fully loaded transformers, long cables, diesel generators, etc.

Reducing mechanical shock is essential :

* To increase life expectancy of belts, gears, shafts and motors.

* To reduce maintenance requirements

* To prevent damage to fragile loads

SOLCON

Reducing Starting Current & Torque

* Reducing Inrush Current & Mechanical Shock in squirrel cage motors

can be done by reducing motor voltage during starting

* Reducing voltage during starting can be done by the old electro-

mechanical systems like Star-delta, Auto-transformer, Part winding,

Starting Resistors or by modern Electronic Soft Starters

SOLCON

Reducing Starting Voltage

When Starting Voltage is reduced:

* Starting torque is reduced in square proportion to voltage reduction

* Starting current is reduced in direct or square proportion to voltage

reduction - depending on starting method

SOLCON

Direct On Line - Summary

Advantages: Simple, Small size, Low price.

Disadvantages:

* High inrush current 500-850% In which may cause voltage drops in

supply system, nuisance tripping & light dimming.

* High starting torque 150-250% Mn which may cause mechanical

damages to gears, transmissions and fragile loads.

Pri

ce fa

ctor

: 0

.2 -

1 ti

mes

Sof

t sta

rter

SOLCON

Y/D Starting

Starting voltage - Y connected (58% Un), transfer to Delta (100% Un)

by timer - open loop control.

t

U Y = 58% Un

YYUn

U Y

transferpoint

SOLCON

Y/D Starting

Starting Current - Typically 250% In, current is reduced in square

proportion to voltage reduction

RPM

I Y

I start

DOL

YY

Transfer point

Reduced Starting Current

SOLCON

Y/D Starting

Starting Torque - Reduced by the square proportion to voltage reduction,

the voltage remains constant during most of the starting time.

M start Y = (0.58)2 x M start (A.T.H) = 0.33 x M start

RPM

M operation

M Y

M acceleration

YY

M

DOL

Reduced Starting & Acceleration Torque

SOLCON

Y/D Starting

Start Time - Extended acceleration time due to lower acceleration torque

Y/Nn

t

D.O.L

SOLCON

Y/D Starting - Current Inrush

1 sec.

current spike during transfer from Y to D (especially in varying type loads)

SOLCON

Y/D Starting - Summary

Advantages: Simple, Small size, Inexpensive (in lower ratings),

Lower starting currents.

Disadvantages:

* Non-adjustable starting characteristics

* Possible high switching current & torque (expensive closed transition)

* Open loop control

* 6 wires to the motor

* No optional features (only soft start)

* No motor protection.Pri

ce fa

ctor

: .6

- 2

tim

es S

oft s

tart

er

SOLCON

Auto-transformer Starting

Advantages: Lower starting currents.

Disadvantages:

* Bulky

* Expensive

* Limited number of operations per hour

* Complicated change of starting parameters

* Switching transients - expensive closed transition.

Pri

ce fa

ctor

: 1

- 2

tim

es S

oft s

tart

er

SOLCON

Electronic Soft Starters

Using 6 Thyristors (SCRs), 2 per phase, in an anti-parallel connection

3

L1

L2

L3

SOLCON

Thyristors (SCR’s) firing system

The left thyristor conducts during

the positive period of the sine wave,

when Vc is On and can be turned

Off when the current is at zero

crossing.

Vc

SOLCON


The other thyristor is coupled in an

anti-parallel method and conducts

in the negative half cycle.

Vc

SOLCON


Thyristor firing controls the soft starter output voltage

U start

Zero Crossing

t soft start

Phase Control

SOLCON

Voltage Ramp-up

Voltage ramp-up (without Current Limit)

t soft start

Time

Voltage ramp

Un

U1

t2 t3 t4t1

U2

U3

U4

U start

SOLCON

Current Ramp-up

Current Ramp-Up (without Current Limit)

Current with Soft-starter

RPM

In

I soft

I start

SOLCON

Current ramp-up with Current Limit

Voltage & current increases until the current reaches Current Limit.

The Voltage will not increase until current begins reducing, as the motor

approaches nominal speed.

I n

4 XCurrent

Limit

RPM

I start

t soft start

Time

Currentlimit

Un

U start

SOLCON

Calculating motor’s torque

Motor torque with soft starter M

soft = ( U soft / U n ) 2 * M start

Assuming M start = 1.8 * M n

Assuming U start =0.5 Un (0.25 Un)

M soft = (0.25) * 1.8 = 0.45 M start

Torque is reduced by the square of the voltage reduction

SOLCON

Motor Voltage / Torque Ratio

RPM

M D.O.L

M

TU5

TU3

TU4

TU6

TU2

TU1

t6t2 t3 t4 t5t1

V

U5

U3

U2

U1

t2 t3 t4 t6t1 t5

U4

SOLCON

Torque with & without Current Limit

Torque / Voltage curves with and without Current Limit

with current limit

M max

RPM

Mn

M saddleM start

without current limit

SOLCON

Soft Starter - Current Inrush

with current limit

1 sec.

SOLCON

Soft Starter - Mechanical shock

1 sec.

SOLCON

Summary

Mot

or t

orqu

e

D.O.L Y / Soft-starter

Mot

or c

urre

nt

Mot

or t

orqu

e

SOLCON

Soft starter - summary

Disadvantages: Relatively expensive, higher sophistication

Advantages:

* Solid state - no moving parts, less maintenance

* Reduced starting current & mechanical shock

* Smooth, stepless acceleration & deceleration

* Closed current loop starting

* Easy adjustments for all applications

* Comprehensive motor protection package

* Special features: “Pump Control”, Soft stop, Slow speed with

electronic reversing, Dual adjustment, Energy saver, etc.

SOLCON

Soft Starter Line

RVS-DN Digital 8-2700A 220 - 690V RVS-DN “ 105-390A 1000V RVS-DN “ 8-2700A Marine Type HRVS-DN “ 60 - 800A 1500-7200V RVS-N Analogue 8-170A 220 - 600V SOLSTART “ 8-17A 220 - 690V SEM-N (navy) “ 8-31A 220 - 440V

SOLCON

RVS-DN Digital Soft Starters

for Heavy Duty Industrial Applications

SOLCON

The RVS-DN family

Size B Size D Size A Size C55 - 90 KW 250 - 450 KW 4 - 37 KW 110 - 220 KW

SOLCON

RVS-DN Advantages

Heavy Duty Design: 400% In, 30 sec. at 50°C, 4 starts an hour Comprehensive Range: 8-2700A, 220-1000V Second Generation Digital Field proven experience Fully featured: Control, Protection & Supervision Comprehensive Motor Protection User Friendly: Default settings, LCD display, Selectable languages

SOLCON

RVS-DN Approvals

cUL

UL

cUL Approved : 8-820A1100A and above are designed to meet cUL requirements

CE Approved (EMC & Safety) : 8-1400A1800A and above are designed to meet CE requirements

Lloyd’s Approved (ENV 1 & ENV 2) : 8-1400A1800A and above are designed to meet Lloyd’s specifications for ENV1 & 2 requirements

UL Approved : 8-820A, 1100A and above are designed to meet UL requirements

Marine & Offshore

Canada

European

USA

SOLCON

Selector GuideStarter Frame Motor HP

Type Size 230V 460V 575V

RVS-DN 8 A 2.5 5 7.5

RVS-DN 17 5 10 15

RVS-DN 31 10 20 30

RVS-DN 44 15 30 40

RVS-DN 58 20 40 50

RVS-DN 72 25 50 60

RVS-DN 105 B 40 75 100

RVS-DN 145 50 100 125

RVS-DN 170 60 125 150

RVS-DN 210 C 75 150 200

RVS-DN 310 125 200 300

RVS-DN 390 150 300 350

Starter should be selected according to motor’s Full Load Amp and starting conditions

SOLCON

Selector Guide

Starter Frame Motor HP


RVS-DN 460 D 200 400 450

RVS-DN 580 250 500 550

RVS-DN 820 300 700 900

RVS-DN 1100 E * 450 900 1100

RVS-DN 1400 500 1100 1500

RVS-DN 1800

RVS-DN 2100 F *

RVS-DN 2700

Starter must be selected according to motor’s Full Load Amp and starting conditions

* To be used with a by-pass contactor

SOLCON

RVS-DN Block Diagram

M* Tachometer in

Firing circuitry

I measurements

Inputs(Prog.)

LCD

Display

Power

Supply

DisplaySCRs

V measurements

* RS-485 Comm.

* Thermistor in

* Insulation

* Analogue Out

StatisticsFaults

Keypad

LEDs

Outputs(Prog.)

MICRO

PROCESSOR

Preparation

Remain ActiveAll ProtectionFor By-pass

Options : Memory :

Isolated

Relay

SOLCON

Size A (8-72A)

To Motor

Control terminals (Plug-in)

LCD (selectable languages)

To by-pass (option)

Line

LEDs (status display)

IP 20

Finger protected for safe operation

SOLCON

Size B (105-170A)

Control Module (Identical for sizes B-F)

(Bus bar coverremoved)

To Motor

Line

PowerSection

Front protected for safe operation

SOLCON

Size C (210-390A)

ControlModule

PowerSection

To MotorLine


C/T

Front protected for safe operation

SOLCON

Preparation for By-pass

LineTo motor To by-pass

C / T

SOLCON

Preparation for By-pass

M

L 2 L 3L 1

SOLCON

Size D (460-820A)

Load Line

C/T

Controlmodule

Powersection


SOLCON

Size E (1100-1800A)

ControlModule

PowerSection

C/T

To Motor

Line

SOLCON

Control Module (identical for sizes B-E)

* Insulation Test board* Analogue board* Tacho encoder board (only one)

Communication Board RS 485 (MODBUS)

Control Supply I / O

Optional boards:

PowerSupplyBoard

Control Transformer

ControlPlug

Dip Switch

E PROM

SOLCON

Dip switch

OF

F1 2 3 4 5 6 7 8

No. Function OFF (default) ON

1 Display Minimum Maximum

2 Tacho feedback Disabled Enabled

3 Mains / Generator Mains Generator

4 Always OFF

5+6 Language selector English, French, German, Spanish

7 Extended range Disabled Enabled

8 Software lock Open Locked

SOLCON

Front panel Keypad, LCD & LEDs

6 keys, menu driven software, default parameters

Digital Reduced Voltage Starter RVS-DN

Mode

StoreReset

Select

On

StartRunS.StopStopE.Save / SlowD. Adj. / Rev. Fault

CURRENT LIMIT400% 8 LEDs for

quick status

display

Two lines - 16 characters each, Back light (optional) Selectable languages - English, German, French, Spanish Motor data, Parameter setting, Fault diagnostic, Statistical data

SOLCON

Start & Stop Parameters

Initial Voltage Current Limit Acceleration Time (Ramp-up Time) Deceleration Time (Ramp-down Time) - Soft Stop Pump Control Dual Adjustments Pulse start Diesel Generator Starting

SOLCON

Initial Voltage

Initial Voltage - determines the Initial Torque (the Torque is reduced in the square proportion of the voltage reduction).

Adjustable : 10-50% (80%) Un, should be set for the motor to start turning immediately after Start signal is initiated

10%

Initial Voltage

50%

Un

SOLCON

Acceleration Time

Acceleration Time - Determines the Voltage Ramp-up Time, from Initial to Full Voltage.

Adjustable :1-30 (90) sec. Set to the shortest acceptable time.

Time

Voltage Ramp-up Time

Un

U start

30 sec2

SOLCON

Current Limit

Current Limit - Determines the maximum current during acceleration process and the acceleration time to full speed.

Adjustable :100-400% (500%) I FLA, Set to the highest acceptable current.

Current

Limit

U start

t soft start

U C. L

U1

Un

I start

RPM

400%

100%

SOLCON

Current limit / Start time Ratio

Lower Current Limit => longer Start Time

Time

4 x In

5 10 15 20 25 30

In

3 x In

SOLCON

Deceleration Time “Soft Stop”

Deceleration Time - Determines the Voltage Ramp-down Time, from Un to zero.

Adjustable: 1-30 (90) sec. Set to the shortest acceptable time.

Un

Speed

Deceleration Time

2 30 / 90 sec

SOLCON

Pump Control Program

Designed to eliminate Over-Pressure during starting. Water-Hammer during stopping.

Imperative when pumping to higher elevations or into a high pressure pipe system

SOLCON

Pump Starting D.O.L.

When starting D.O.L high Acceleration Torque causes rapid increase in

pump speed, fast change in flow & consequently high Pressure.

The high pressure in the pipe system may result in damage to pipes, fittings,

joints, etc.

Time

Torque

M start

Accel.Torque

Motor(D.O.L)

Voltage

Speed

Load

Speed

Time

SOLCON

Standard Soft Starters

When starting with a standard soft starter - Starting Torque is reduced

drastically, however Peak Torque still remains high, causing high

Acceleration Torque towards the end of the starting process. Peak &

Acceleration Torque must be reduced to extend the Acceleration time.

Time

Voltage

With softstarter

SlowAccel.

Speed

Time

Torque

M start

Accel.Torque

D.O.L

Speed

Loadsoft starter

SOLCON

RVS-DN Pump Control

Pump Control “Start Curves” - Three special voltage ramp-up curves

to reduce peak torque & extend Acceleration time.

Adjustable: 1-3 Curves, set as required

Time

Vol

tage

Area of Pump Control start curves

With soft starter

Spe

ed

Time

1 2 3DOL

0T

orqu

e

3

Speed

D.O.L

2

1

0

SOLCON

Pump Stopping

When stopping with a D.O.L starter - speed is quickly reduced and flow

abruptly stopped. This may cause a Water Hammer (mechanical shock and

audible noise) with severe damage to pipes, joints, fittings, valves, etc.

DOL opens

Un

Speed

SOLCON

Pump Control - Stop Curves

Stopping with a standard soft starter - when pumping to a higher

elevation, motor torque may quickly fall below load torque (as torque

decreases at the square of voltage reduction). This may cause abrupt

stalling instead of smoothly decreasing speed to zero, creating the Water

Hammer phenomenon.

Stalling pointUn

Speed“Soft stop”

SOLCON

RVS-DN Pump Control

Pump Control “Stop Curves” - enables selection between 3 special voltage ramp-down curves preventing stall condition and eliminating Water Hammer.

Adjustable:1-3 Curve, Set as required

TimeTime

Vol

tage

Area of Pump Control stop curves

With soft starterS

peed

1 2 3DOL

0

Tor

que

3

Speed

D.O.L

2

1

0

SOLCON

Pump Control - Final Torque

Final Torque - enables setting a point where motor stops when the valve closes - Before reaching end of deceleration, motor torque is lower than load torque and the valve closes, however motor may continue running.

Adjustable: Min-Max., Set as required

Time

Check Valvecloses and motor stops

Vol

tage

Spe

edArea of Pump Control Final Torque

TimeDOL

SOLCON

Dual Adjustment

Two sets of parameters - for Variable Loads, Two Speed Motors and D.G. starting

Adjustments: Initial Voltage Current Limit Acceleration Time Deceleration Time Motor FLA Starting Mode (Utility or D.G)

Dual AdjustCharacteristic

Vol

tage

Time

StandardCharacteristic

SOLCON

Energy Save

Energy Save - potential saving and P.F. improvement on lightly loaded motors .

Adjustable: 0-10 (Min-Max) .

Note - may require filter to meet CE requirement (European)

I motor

time

In

Un

SOLCON

Slow Speed

Slow speed - Motor operates at 1/6 Nn, Forward or Reverse (no contactors required)

Adjustments: Torque at Slow speed 1 - 10 (Min-Max) Max time 1 - 30 sec.

Speed

1/6 Reverse

Max. Slow Speed Time 30 Sec.

Nn1/6 Forward

Applications

* Positioning

* Sewage pumps

SOLCON

Pulse start

Un

time

0.1 - 1 sec.

Pulse start - a pulse of 80% Un (without Current Limit) to break free high friction / inertia loads.

Adjustable: Pulse Time 0.1 - 1 sec.

SOLCON

Tacho feedback

Tacho Feedback - for linear acceleration of special loads Adjustable : Consult factory

Applications

* Conveyor belts

Voltage

Speed RPM+10 DC

SOLCON

Starting from a Diesel-Gen.

When starting from older D.G. sets (especially those equipped with low cost Voltage Regulators) both voltage and frequency are unstable, causing irregular firing of the thyristor. The RVS-DN is equipped with a special program overcoming the voltage and frequency instability.

To operate Gen. Mode set Dip Sw. 3 to On and energize the Dual Adjustment Terminal. When operating in Generator mode, motor must be loaded.

When motor can operate from Mains and D.G (stand-by D.G) set Dip Sw. 3 to On. However, Dual Adjustment Terminal should be energized only when D.G. is running.

SOLCON

Motor & Starter Protection Before During During During

Starting Starting Running Stopping Motor Insulation (optional) + - - - Motor not connected + - - - No. of starts & Start Inhibit - + - - Too long start (Stall) - + - - Phase Loss - + + - Phase reversal - + - - Under / Over Voltage - + + - Under Current - - + - Shear-pin (Instantaneous) - + + + Over Current (O/L) - - + - External Fault - + + - High Motor Temp (optional) - - + - Shorted SCR + - - - Starter over-temp. - + + +

SOLCON

Low Motor Insulation (optional)

Motor Insulation (optional) - tests motor insulation level when motor is not running (requires a Line Contactor or disconnecting a Line C/B etc. ).

Adjustments: Alarm Level: 0.2 - 5 Mohm, Set as required Trip Level: Off, 0.2 - 5 Mohm, Set as required

Applications* Submersible pumps* Harsh environments* Motors not running for a long period of time.

SOLCON

Motor Temp. (optional)

Motor Thermistor Input - Over Temp Protection (option, in place of Insulation Card)

Adjustments: Thermistor type: PTC or NTC Trip Level: Off, 0.1 - 10Kohm

Note - the Analogue card contains also Analogue Output, related to motor’s current (0-10VDC, 4-20mA, 0-20mA)

SOLCON

Excessive starts

Max. Number of Starts - preventing excessive starts during a short period of time.

Adjustments: Permitted Number of Starts: Off, 1- 10 Start period: 1- 60 min. Start Inhibit Time (after Too Many Starts): 1- 60 min.

SOLCON

Stalled Motor

Max. start time - Preventing Stall condition, trips the starter if current is not reduced below Motor FLA within the adjusted time.

Adjustments: 1-30 (240) sec.

Max. Starting Time

Starting

current

2010 30

SOLCON

Jam Protection

Jam Protection - Trips the starter in less than 1 cycle when current exceeds 850% IFLA.

Trip

850% IFLA

Applications* Conveyors* Agitators* Complex Machinery

SOLCON

Shear-pin Protection (“Immediate Relay” set to “Shear-pin”) - Stops (no trip) the motor when current exceeds the set level, with an adjustable time delay.

Adjustments: Trip Current 200 - 850% Motor FLA (during starting 850%) Shear-pin Delay 0.5 - 5 sec (no delay at 850%)

Trip

850% IFLA

Electronic Shear-pin

Applications

* Shredders

* Complicated drive systems

SOLCON

Electronic Shear pin

Williams Tire Shredders* When system was jammed the electronic ammeter sent a signal to the PLC which tripped the Forward Contactor and closed the Reverse. * The Forward Contactor was quickly damaged by the high opening currents.

A

PLC Rev.For.

G ShredderElectronic Ammeter M

SOLCON

Electronic shear-pin (Williams Shredder)

The “Immediate Relay” is designated as “Shear-pin”, upon Jam (delayed up to 5 sec) the starter will stop (no trip) and signal the PLC. The Forward Contactor will open under no-current, the Reverse Contactor will close and the soft starter will be re-started.

L N

1 2 3 4 5 6 7 8 9 10 11 12

Shear-pin

M

For.

PLC C/B

RVS-DN

Rev.

SOLCON

Overload

Electronic overload - with selectable curves Adjustments:

O/L Trip level: 75-150% I FLA

Trip Time at 500% I FLA: 1-10 sec

150%

10 sec

t

75% 500%

1 sec

I115%

trip time at 500% FLA

O/L setting

SOLCON

Under Current

Under current - Trips the starter when current decreases below the U/C Trip level after the selectable time delay. Under current auto reset allows for restarting after a predefined period of time, to re-check the under current status.

Adjustments: Trip Current: Off, 20-90% I FLA

Trip Delay 1-40 sec.

Start

I FLA

20%

40 sec.

80%

20

90%

2

Applications* Dry running pumps* Broken belt / gear* Closed air inlet (fan)

SOLCON

Under / Over Voltage

Under Voltage - Trips the starter when voltage drops below the U/V Trip level after the selectable time delay. With programmable auto-reset.

Adjustments: Trip level 120-600V (Line - Line) Trip Delay 1-10 sec.

Over Voltage - Trips the starter when voltage increases above the O/V Trip level after the selectable time delay.

Adjustments: Trip level 150-750V (Line - Line) Trip Delay 1-10 sec.

SOLCON

Phase Loss & Wrong Sequence

Phase Loss - Trips the starter when one or two phases are missing for over 1 sec. With programmable auto-reset.

Phase Sequence - Trips the starter when phase sequence is wrong Adjustments : Protection Enabled / Disabled

SOLCON

Motor Not Connected

Wrong Connection - Trips the starter if motor is not connected to starters’ Load terminals, 1,2 or 3 wires.

* When motor is connected, voltage between phases will be approx 3V.* When motor is not connected, voltage between phase will be full voltage.

C

R

400V

SOLCON

External Fault

External Fault - Trips the starter 2 sec. after the contact closes.

Applications* Water level for pumps* Oil level for compressors

RVS-DN

SOLCON

Soft Starter Fault

Shorted SCR - Prevents starting when one or more SCR have failed (short circuited)

When SCRs fail, there is a short circuit between Line and Load of the same phase.

C

R

SOLCON

Fault & Resetting

Upon fault The starter trips and locks in fault mode The “Trip” LED lights up The LCD displays fault cause (Shear-Pin) The Fault Relay changes position The Immediate & End of Acc. Relays return to original position Same data is transmitted through the RS 485 The starter records fault current in statistical parameters

Resetting after fault removal Front panel - Reset key, Hard wire - Terminals 7 or 8, RS 485 Possible only after Start signal is removed

SOLCON

Soft Starter Fault

Heatsink Over temperature - Trips the starter when heatsink temp. rises above 85°C.

SCR Protection: by MOVs (Metal Oxide Varistors)

SOLCON

Control wiring

L N

Control Supply can be 115 or 230VAC - must be specified(By special order, DC voltage may be supplied for sizes B-F)

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21

Com

mon

Neu

tral

Sof

t Sto

pS

top

E.S

ave

/ Slo

w /

Res

et

D. d

just

/ R

ever

se /

Res

et

Sta

rt

SOLCON

Control Wiring

Control Supply

PowerSupplyBoard

Control Transformer

ControlPlug

SOLCON

Control Supply

Internal Jumper* When connected to A - fan (s) will operate as long as Control Supply is connected to Terminals 1-3 * When connected to B - fan (s) will operate when Control Supply is connected to Terminal 2 (for example through a N.C. contact of the by-pass contactor)* When connected to C - Fan (s) will operate when relay A closes (Automatically upon start signal, stops 5 min. after stop signal or when by-pass contactor closes.

Notes : 1. It is recommended to leave at factory default (A).2. For size A, 44-72A, modification should be done by a field technician.

2

L1 N

BA C

31

Jumper

R

SOLCON

Control wiring

!

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21

Sto

pS

oft S

top

Sta

rtE

.Sav

e / S

low

Sp

/ Res

et

D. A

djus

t / R

ev. /

Res

etC

omm

on

Ext

erna

l Fau

lt

Tac

ho fe

edba

ck

Neu

tral

Aux

Con

tact

“

Fau

lt”

Aux

Con

tact

“End

of A

cc.”

Aux

Con

tact

“Im

med

iate

”

SOLCON

Control wiring

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21

Neu

tral

N or Gr. (1)

(1) For Mains system with Ground and / or Neutral - connect Terminal 21 to N or Gr.

(2) For Mains system without Ground and Neutral - leave Terminal 2 open

NN

SOLCON

Control wiring

L N Same voltage for Control Supply (1-3) and Control Commands (4-9)

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21

Com

mon

Neu

tral

Sof

t Sto

pS

top

E.S

ave

/ Slo

w /

Res

et

D. A

djus

t / R

ever

se /

Res

et

Sta

rt

SOLCON

Control wiring

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21

Com

mon

Neu

tral

Different voltages for Control Commands (4-9)can be AC or DC (must be specified)

Sof

t Sto

pS

top

E.S

ave

/ Slo

w /

Res

et

D. A

djus

t / R

ever

se /

Res

et

Sta

rt

Control Command voltage

NL

SOLCON

Control wiring - Start / Stop

Motor will soft start when C closes and stop immediately when C opensL N

1 2 3 4 5 6 7 8 9

Com

mon

Sof

t Sto

p

Sto

p

E.S

ave

/ Slo

w /

Res

et

D. A

djus

t / R

ev. /

Res

et

Sta

rtC

SOLCON


Motor will soft start when C closes and soft stop when C opensL N

1 2 3 4 5 6 7 8 9

Com

mon

Sof

t Sto

p

Sto

p

E.S

ave

/ Slo

w /

Res

et

D. A

djus

t / R

ev. /

Res

et

Sta

rtC

SOLCON


Push-button operation - Motor will soft start when C closes, soft stop when C1 opens and stop immediately when C2 opensL N

1 2 3 4 5 6 7 8 9

Com

mon

Sof

t Sto

p

Sto

p

E.S

ave

/ Slo

w /

Res

et

Sta

rtC2 CC1

D. A

djus

t / R

ev. /

Res

et

SOLCON


1 2 3 4 5 6 7 8 9

Com

mon

Sof

t Sto

p

Sto

p

E.S

ave

/ Slo

w /

Res

et

Sta

rt

C

L ND

. Adj

ust /

Rev

. / R

eset

SOLCON

Control wiring - Energy Save

L

Energy Save will operate when Terminal 7 is designated as Energy Save and C closes. For automatic operation use a jumper.

1 2 3 4 5 6 7 8 9

Com

mon

Sof

t Sto

p

Sto

p

E.S

ave

/ Slo

w /

Res

et

Sta

rt

N

C

D. A

djus

t / R

ev. /

Res

et

SOLCON

Control wiring - Slow speed

Slow Speed will operate when Terminal 7 is designated as Slow Speed and C closes before motor starting.

1 2 3 4 5 6 7 8 9

Com

mon

Sof

t Sto

p

Sto

p

E.S

ave

/ Slo

w /

Res

et

Sta

rt

L N

C

D. A

djus

t / R

ev. /

Res

et

SOLCON

Control wiring - Remote Reset

L* Remote (hardwire) Resetting will operate when Terminal 7 or 8 are designated as Reset and C1 or C2 close

1 2 3 4 5 6 7 8 9

Com

mon

Sof

t Sto

p

Sto

p

E.S

ave

/ Slo

w /

Res

et

D. A

djus

t / R

ev. /

Res

et

Sta

rt

N

C2C1

SOLCON

Control wiring - Dual Adjustment

Dual Adjustment (secondary parameter setting) will operate when Terminal 8 is designated as Dual Adjust and C1 closes. L

1 2 3 4 5 6 7 8 9

Com

mon

Sof

t Sto

p

Sto

p

E.S

ave

/ Slo

w /

Res

et

D. a

dju

st /

Rev

erse

/ R

e.

Sta

rt

N

C

SOLCON

Control wiring - D.G. Program

D.G. Program will operate when Dip Switch 3 “Generator” is set to On, Terminal 8 is designated as Dual Adjust and C1 closes. L

1 2 3 4 5 6 7 8 9

Com

mon

Sof

t Sto

p

Sto

p

E.S

ave

/ Slo

w /

Res

et

D. A

dju

st /

Rev

erse

/ R

e.

Sta

rt

N

C

SOLCON

Control wiring - Slow speed Reverse

Slow Speed Reverse will operate when Terminal 7 is designated as Slow Speed, Terminal 8 is designated as Reverse and when closing C1 (before starting) and C2 (before or during motor running) L

1 2 3 4 5 6 7 8 9

Com

mon

Sof

t Sto

p

Sto

p

E.S

ave

/ Slo

w /

Res

et

D. A

djus

t / R

ever

se /

Res

.

Sta

rt

N

C2C1

SOLCON

Auxiliary Relays

Auxiliary Relays : C/O, 8A/250VAC

* Immediate - with On and Off delays* Fault - prog. Fault / Fale- safe* End of Acceleration - with On delay

SOLCON

“Immediate Relay”

L

1 2 3 4 5 6 7 8 9 10 11 12

Immediate / Shear pinRelay

Selection by designating the Immediate Relay as: * Immediate - with On and Off delays* Shear pin - When relay is designated as Shear-pin

SOLCON

“Immediate Relay” - Immediate

L

1 2 3 4 5 6 7 8 9 10 11 12

ImmediateRelay

Applications* Operating a valve * Opening / closing a brake

Off Delayafter Stop

On delayafter Start

SOLCON

“Immediate Relay” - Immediate

Creating special StartingCurves:1. Designate “Imm Relay” as Immediate and set On Delay time 2. Designate Terminal 8 as “Dual Adjust” and set parameters

1 2 3 4 5 6 7 8 9 10 11 12

D. A

dju

st

Immediate Relay

On delay

VoltageRamp-up

SOLCON

By-pass Contactor

1 2 3 4...9 13 14 15 16 17 18 19 20 21

L N

M

End of Acceleration Relay

SOLCON

Fault Relay

Fault Relay programmable :* Fault - 13-15 at NO, upon fault 13-15 are NC, returns upon fault reset* Fault Fail Safe - Upon Control Supply connection 13-15 at NC, upon fault 13-15 are at NO, returns upon fault reset.

1 2 3 4...9 13 14 15 16 17 18 19 20 21

Fault Relay

SOLCON

Control wiring - External Fault

External Fault input - connected between 19 and 21 (Neutral), use short wires, can be used only when 21 is connected to Ground or Neutral

1 2 3 4...9 13 14 15 16 17 18 19 20 21

Ext

erna

l Fau

lt

SOLCON

Control wiring - optional cards

25

26

27

Motor Insulation Alarm

23

24

22

Communication Board

(+) RS485

(-) RS485

N.C.

25

26

27

Digital Tacho Board

Encoder(-)

(+)

Ground

(+) Analogue

(-) Analogue

Thermistor

Thermistor

28

29

30

31

32

Analogue I/O Board

Ground

SOLCON

Wiring

L1 L2 L3

Fuses or Circuit breaker

Line Contactor(when required)

Soft Starter

M

SOLCON

Line & By-pass contactors

L1 L2 L3

By-pass Contactor

“Preparation for By-pass”eliminates the need for additional O / L

M

SOLCON

Power Factor Capacitor

Capacitor (when used)must be at Line side

L1 L2 L3

Soft starter

Motor

Fuses or circuit breaker

M

SOLCON

PAGE 0 PAGE 1 PAGE 2 PAGE 3 PAGE 9

?

Mode

Store

Reset

Select

% OF MOTOR FLA

MOTOR INSULATION52,8 Mohm

FLC FLA105 105

UCT UCD OCT0 10 850

OLT OLD115 4

UVT UVD OVT OVD 300 5 480 2

STC PT IV CL AT 0 0 30 400 10

MST NOS SP SI CD 30 10 30 15 5

SPC DT FT 0 10 0

DA: IV CL AT DT 30 400 10 10

DA: FLA 105

ES SST MSST 10 8 30

SEQ INSULAT RST NO 0,1 0,1 NO

I7 I8 FREL IMREL 0 0 0 0 0

DRV BAUD PAR SER0 96 0 248

MAIN PARAMETERS

STARTER FLC105 AMP.

MOTOR FLA105 AMP.

STORE ENABLEMAIN PARAMETERS

START PARAMETERS

SOFT START CURVE0 (STANDARD)

START TACHO GAIN0 (MIN. GAIN)

PULSE TIME0 SEC.

INITIAL VOLTAGE30 %

CURRENT LIMIT400 % OF FLA

ACC. TIME10 SEC.

MAX. START TIME30 SEC.

NUMBER OF STARTS10

STARTS PERIOD30 MIN.

START INHIBIT15 MIN.

RUN CONTACT DEL.5 SEC.

STORE ENABLESTART PARAMETERS

STOP PARAMETERS

SOFT STOP CURVE0 (STANDARD)

STOP TACHO GAIN0 (MIN. GAIN)

DEC. TIME10 SEC.

FINAL TORQUE30 %

STORE ENABLESTOP PARAMETERS

UNDERCURR.DELAY10 SEC.

O/C - SHEAR PIN850 % OF FLA

OVERLOAD TRIP115 % OF FLA

OVERLOAD DELAY4 SEC - AT 5 FLA

UNDERVOLT. TRIP300 VOLT

UNDERVOLT. DELAY5 SEC.

OVERVOLT. TRIP480 VOLT

OVERVOLT. DELAY2 SEC.

UNDERCURR. TRIP0 % OF FLA

STATISTICAL DATA

LAST STRT PERIODNO DATA

LAST START MAX. INO DATA

TOTAL RUN TIME0 HOURS

TOTAL # OF START0

LAST TRIPNO DATA

TRIP CURRENT0 % OF FLA

TOTAL # OF TRIPS0

Minimized Mode

SOLCON

PAGE 4 PAGE 5 PAGE 6 PAGE 7 PAGE 8

EN. SAVE & SL.SPD.PARAMETERS

SAVING ADJUST.0 MIN.

SLOW SPEED TORQ.8

MAX. SLOW SP. TIME30 SEC.

STORE ENABLEEN. SAVE & SL. SPD.

COMM. PARAMETERS

DRIVE NUMBER0

BAUD RATE9600

PARITY CHECKEVEN

SERIAL LINK NO248) OFF(

STORE ENABLECOMM. PARAMETERS

?

Mode

Store

Reset

Select

DUAL ADJUSTMENTPARAMETERS

DA: INIT. VOLT.30%

DA: CUR. LIMIT400 % OF FLA

DA: ACC. TIME10 SEC.

DA: DEC. TIME10 SEC.

DA: MOTOR FLA105 AMP.

STORE ENABLED.ADJ. PARAMETERS

Maximized Mode

FAULT PARAMETERS

PHASE SEQ. Y/NNO

INSULATION ALARMOFF

THERMISTOR TRIPOFF

STORE ENABLEFAULT PARAMETERS

INSULATION TRIPOFF

AUTO RESETNO

THERMISTOR TYPEPTC

I/O PROGRAMMINGPARAMETERS

PROG. INPUT #7ENERGY SAVER

PROG. INPUT #8DUAL ADJUSTMENT

FAULT RELAY TYPEFAULT

ANALOG OUTPUTNORMAL

STORE ENABLEI/O PROG.PARAM.

IMM/S.PIN RELAYIMMEDIATE

RELAY ON DELAY0 SEC.

RELAY OFF DEL.0 SEC.

SOLCON

Main Parameters

Starter FLC 8 - 2700A (8, 17, 31, 44 .... ) Motor FLA 50 - 100% Starter FLC setting Under Current Trip Off, 20 - 90% Motor FLA setting Under Current Delay 1 - 40 sec O/C Shearpin 200 - 850% Motor FLA setting O/C Shearpin Delay 0.5 - 5 sec Overload Trip 75 - 150% Motor FLA setting Overload Delay 1 - 10 sec (@ 500% FLA) Under Voltage Trip 120 - 600V Under Voltage Delay 1 - 10 sec Overvoltage Trip 150 - 750V Overvoltage Delay 1 - 10 sec

SOLCON

Start Parameters

Soft start curve 4 selectable curve (Pump Control) Start Tacho Gain 6 levels of Tacho Gain Pulse Time 0 - 1 sec. (2sec) Initial Voltage 10 - 50% Un (80%) Current Limit 100 - 400% Motor FLA setting

(500%) Acceleration Time 1 - 30 sec. (90sec) Max. Start Time 1 - 30 sec. (240sec) Number of Starts 1 - 10 & Off Starts Period 1 - 60 min. Start Inhibit Period 1 - 60 min. Run Contact Delay 0 - 120 sec.

SOLCON

Fault Parameters

Phase Seq.. protection Yes / No Insulation Alarm Off, 0.2 - 5 Mohm Insulation Trip Off, 0.2 - 5 Mohm Auto Reset Yes / No (phase loss , Undervoltage) Auto Reset Yes / No (Under Current) Thermistor type PTC / NTC (optional) Thermistor Trip Off, 0.1 - 10 Kohm

SOLCON

I / O Programming

Prog. Terminal # 7 Energy Save, Slow Speed, Reset Prog. Terminal # 8 Dual Adjustment, S.Spd.Reverse,

Reset Fault Relay Fault, Fault - fail safe Imm Relay function Immediate / Shearpin Imm Relay On Delay Imm 0 - 60 sec. / Shearpin 0 - 5 sec. Imm Relay Off Delay Imm 0 - 5 sec. / Shearpin 0 - 5 sec. Analogue Output Normal, Inverted

SOLCON

Communication Parameters

Drive number 0 - 999 Baud rate 1200 - 9600 Parity check Even / Odd Serial link No. 1 - 247 & Off

RS 485 with MODBUS RTU protocol can control and supervise up to 32 starters through a twisted pair.

A Windows based software for Setting, Control & Supervision is available as an option.

SOLCON

Statistical Data

Last start Period Last start max. current Total run time Total number of starts last trip Trip current Total number of trips

SOLCON

Motor maintenance is not so simple

SOLCON

Ordering Information Starter Current Rating: 8 - 2700A Mains voltage: 220-240V, 380-440V, 460-500V, 660-690V, 1000V Control voltage (terminals 1-3): 110-220V, 220-240V (DC by special order) Control inputs (terminals 4-9): 24-48Vac, 110-240Vdc Options: * Communication Board ( option # 3 )

* Motor Insulation Board # 4

* Analogue Board (cannot be used with # 4) # 5

* Special treatment for harsh environments # 8

* Preparation for by-pass (standard for size B) # 9

* Special width 536 mm (size C only) # A

* Line & Load Bus-bars at bottom (size C, D only) # B

* Door operated MMI, pre-ordered (size A-F) # D

* Door operated Kit with additional MMI (size A-F) # DK

* Back lit LCD # L

* Lloyd’s ENV-1 & 2 Approval (8-1400A) # M

* Tachometer Input for special applications # T

* UL and cUL approval # U

SOLCON

Ordering Information

Specify : RVS-DN 210 - 400 - 230 - 230 - 3+4+9 - S

50/60 Hz

50/60 Hz

A

CONTROL INPUT

STARTER FLC

MAINS VOLTAGE

CONTROL VOLTAGE

SERIAL NUMBER

72400 V

1751 - 97

230 V230 V

50/60 Hz

Starter FLC

Mains voltage

Control voltage

Control supply

Options

Front Panel

SOLCON

RVS-N Analog Soft Starters

For Light Duty Industrial / Commercial Applications

SOLCON

RVS-N Advantages

Heavy Duty Design: 400% In, 30 sec. at 50°C

Range: 8-170A, 220-600V Second Generation Analog Field proven experience Incorporating : Soft Start, Current Limit, Soft Stop, Motor Protection Simple Installation and operation

UL cUL

in process

SOLCON

Selector Guide

Starter Frame Motor HP


RVS-N 8 A 2.5 5 7.5

RVS-N 17 5 10 15

RVS-N 31 10 20 30

RVS-N 44 15 30 40

RVS-N 58 20 40 50

RVS-N 72 25 50 60

RVS-N 105 B 40 75 100

RVS-N 145 50 100 125

RVS-N 170 60 125 150

Starter should be selected according to motor’s Full Load Amp and starting conditions

SOLCON

Size A (8 - 72A)

IP 20 Control terminals (Plug-in)

LEDs for status display

Finger protected for safe operation

Line

Load

SOLCON

Wiring with Line & Bypass contactors

“Preparation for Bypass”eliminates the need for additional O / L

* Size B - Standard* Size A - Optional

SOLCON

Control wiring - standard unit

a. Control voltage to the electronic circuitry is derived from three phase supplyb. Connect control voltage to operate the fan (RVS-N 44 and above) c. Connect Neutral to terminal 6 to enable Phase Loss Protection (when Neutral is not available or not connected to Terminal 6 starter may not detect Phase Loss of lightly loaded motors.d. Realys rating 8A, 250VAC, 2500VA

1 2 4 5 6 8 9 10 11 S

top

Neu

tral

Fau

lt

Sta

rt

End

of

Acc

.Fan

SOLCON

Easy Adjustments

Motor FLC 50-100% Starter FLA setting * Initial Voltage 10-50% Un Current Limit 100-400% Motor FLA setting Ramp-up Time 2-30 sec. Ramp-up Time 2-30 sec. Overload Trip 115% Motor FLA setting, factory set.

* e.g. for motor 100A and Starter 105A, set 100 x 100 = 95% 105

SOLCON

Motor Protection

Electronic overload Phase Loss Heatsink Over Temperature

SOLCON


Starter Current Rating 8 - 170A Mains voltage: 220-240V, 380-440V, 460-500V, 575-600V Fan voltage (RVS-N 44 and above): 110-220V, 220-240V Frequency 50 (5) or 60 (6) Hz Options: * Preparation for by-pass

(size A only, standard on size B) # 9

* UL and cUL approval # U

SOLCON


Specify : RVS-N 170 - 400 / 6 - 230 - 9 - S

50 / 60 Hz

ASTARTER FLC

MAINS VOLTAGE

CONTROL VOLTAGE

SERIAL NUMBER

72400 V

1111 - 98230 V 60 Hz

Starter FLC

Mains voltage

Frequency

Fan voltage

Options

Front Panel

SOLCON

Solstart Micro Soft StarterFor Commercial Applications

SOLSTART

SOLCON

“Solstart” Advantages

Max. Current: 8, 17A Initial Volltage: 0 - 85% Ramp-up Time: 1 - 5 Sec. Ramp-down Time: 1 - 5 Sec. Starts per houre 60 Protection IP 20 Mounting DIN Rail

SOLCON

a. Voltage is control no two phases onlyb. Internal by-pass relays

Two-phase Control

Start *L2L1 L2

WU V

L3L1

SOLCON

Easy Adjustments

- 8A, 220-690V

- Soft Start

- Soft Stop

- Compact

- Easy to use

SOLCON

RVS-DN Applications

All types of standard 3 phase motors Pumps Fans and blowers Compressors Transport systems Conveyors Mills and extruders Weak mains and generator networks

SOLCON

Off Shore Applications

Pumps Fans and blowers Screw & Piston Compressors Powerpacks Multi-purpose Hydraulic Crane Powerpack Thrusters Main propulsion Weak generator systems Ballast Pumps

SOLCON

RVS-N Applications

Pumps Fans and blowers Compressors Transport systems Conveyors Weak mains and generator networks

SOLCON

Marine Installations

M/V Seaway Condor M/V Seaway Eagle M/S Arizona M/S Tromsbas M/S Siglar M/S Forde Jumior M/V Sprut M/S Leinebris

CGG Fohn M/S Ordinat M/S Havbas M/V Northern Eagle M/S Syclus M/S Forde M/S Botnica Twelve Torpedo Radars ZIM Hadera - Pending 3 Italian Crude Oil carriers 3pc each

SOLCON

Marketing & Sales - End Users

Identifying potential customers - End Users Water Industry - Water & Waste water Utilities, Municipalities Industrial Customeras

• Cement - Conveyors, Pumps, Crushers, Compressors,

• Agrigates, Stone & Lime - Conveyors, Crushers

• Chemical & Petrochemical - Pumps, Fire fighting pumps, Compressors, fans

• Animal food - Crushers, Palletizers

About this presentation

This presentation intends to show you the quality, sophistication, functionality and reliability of our digital soft starters.

Thank you for joining our seminar.

© Major parts of this Presentation were prepared by Henrik. L. Lillholt of Denmark 1997 .

Seminar Starting Squirrel Cage Motors March 99. Electronic soft starters Part PresentationSlides 1...

Documents

Transcript of Seminar Starting Squirrel Cage Motors March 99. Electronic soft starters Part PresentationSlides 1...