Pressure Control for Bulk Melters Series BM 20 / BM...

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Pressure Control for Bulk Melters Series BM 20 / BM 200 Manual P/N 458 356 A – English – NORDSON ENGINEERING GMBH D LÜNEBURG D GERMANY

Transcript of Pressure Control for Bulk Melters Series BM 20 / BM...

Page 1: Pressure Control for Bulk Melters Series BM 20 / BM 200emanuals.nordson.com/adhesives/English_Manuals/458356.pdf · Terminal Assignment. Pressure Control for Bulk Melters Series BM

Pressure Control for Bulk MeltersSeries BM 20 / BM 200

Manual P/N 458 356 A– English –

NORDSON ENGINEERING GMBH � LÜNEBURG � GERMANY

Page 2: Pressure Control for Bulk Melters Series BM 20 / BM 200emanuals.nordson.com/adhesives/English_Manuals/458356.pdf · Terminal Assignment. Pressure Control for Bulk Melters Series BM

� 2000 Nordson CorporationAll rights reserved

PRC_BM 20 / BM 200Issued 06/00

COV_EN_458356A

NOTEThis manual is for products with the following P/N:

P/N 785 780

Order numberP/N = Order number for Nordson products

NoticeThis is a Nordson Corporation publication which is protected by copyright. Original copyright date 2000.

No part of this document may be photocopied, reproduced, or translated to another language without the priorwritten consent of Nordson Corporation. The information contained in this publication is subject to change without

notice.

TrademarksAccuJet, AquaGuard, Asymtek, Automove, Autotech, Blue Box, CF, Can Works, Century, Clean Coat, CleanSleeve, CleanSpray, Compumelt, Control Coat,Cross-Cut, Cyclo-Kinetic, Dispensejet, DispenseMate, Durafiber, Durasystem, Easy Coat, Easymove Plus, Econo-Coat, EPREG, ETI, Excel 2000, Flex-O-Coat,Flexi-Spray, Flow Sentry, Fluidmove, Fluidshooter, FoamMelt, FoamMix, Helix, Horizon, Hose Mole, Hot Shot, Hot Stitch, Isocoil, Isocore, Iso-Flo, KB30, Little Squirt,Magnastatic, MEG, Meltex, MicroSet, Millenium, Mini Squirt, Moist-Cure, MultiScan, Nordson, OmniScan, Opticoat, Package of Values, PluraFoam, Porous Coat,PowderGrid, Powderware, Pro-Flo, ProLink, PRX, RBX, Rhino, S. design stylized, SC5, SCF, Select Coat, Select Cure, Slautterback, Smart-Coat, Spray Squirt,Spraymelt, Super Squirt, Sure-Bond, Sure Coat, System Sentry, Tela-Therm, Trends, Tribomatic, UniScan, UpTime, Versa-Coat, Versa-Screen, Versa-Spray,Watermark, When you expect more are registered trademarks – � – of Nordson Corporation.

ATS, Auto-Flo, AutoScan, BetterBook, Chameleon, CanNeck, Check Mate, CPX, Control Weave, Controlled Fiberization, EasyClean, Ebraid, Eclipse, Equi=Bead,Fillmaster, FlexiCoat, Gluie, Ink-Dot, JR, Maxima, MicroFin, Minimeter, Mountaingate, Multifil, OptiMix, Pattern View, PluraMix, Primarc, Prism, Pro-Meter,Pro-Stream, Process Sentry, PurTech, Pulse Spray, Saturn, Seal Sentry, Select Charge, Select Series, Sensomatic, Shaftshield, Spectral, Spectrum, Sure Brand,Sure Coat, Swirl Coat, Vista, Walcom, 2 Rings (Design) are trademarks – � – of Nordson Corporation.

Designations and trademarks stated in this document may be brands that, when used by third parties for their own purposes, could lead to violation of the owners’ rights.

Page 3: Pressure Control for Bulk Melters Series BM 20 / BM 200emanuals.nordson.com/adhesives/English_Manuals/458356.pdf · Terminal Assignment. Pressure Control for Bulk Melters Series BM

Table of Contents I

� 2000 Nordson CorporationAll rights reserved

PRC_BM 20 / BM 200Issued 06/00

P/N 458356A

Table of Contents

1. Intended Use 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Unintended Use – Examples – 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2. Residual Risks 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3. Components of Pressure Control Feature 2. . . . . . . . . . . . . . . . . . . . . .

4. Description of Functions 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Frequency Converter for Pressure Control 2. . . . . . . . . . . . . . . . . . .

Jumper (factory setting) 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Block Diagram 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5. Terminal Assignment 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1. Delivery 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2. Repair - Replacing Frequency Converter 5. . . . . . . . . . . . . . . . . . . . . . .

1. Operating Tips 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2. Setting Parameters Frequency Converter 6. . . . . . . . . . . . . . . . . . . . . .

PID Controller 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Parameters for the PID Controller 6. . . . . . . . . . . . . . . . . . . . . . . . .

Reset time 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3. Displays Frequency Converter 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4. Maintenance Pressure Control 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5. Indication Lamps and Indicator Light Control System CS 20 for BM 20 / BM 200 8. . . . . . . . . . . . . . . . . . . . .

6. Pressure Control Control System CS 20 for BM 20 / BM 200 9. . . . . . . . . . . . . . . . . . . . .

7. Displays Control System CS 20 for BM 20 / BM 200 10. . . . . . . . . . . . . . . . . . . .

Display Overview 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8. Settings Overview Control System CS 20 for BM 20 / BM 200 11. . . . . . . . . . . . . . . . . . . .

Motor Part 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Description

Installation

Operation

Page 4: Pressure Control for Bulk Melters Series BM 20 / BM 200emanuals.nordson.com/adhesives/English_Manuals/458356.pdf · Terminal Assignment. Pressure Control for Bulk Melters Series BM

Table of ContentsII

� 2000 Nordson CorporationAll rights reserved

PRC_BM 20 / BM 200Issued 06/00

P/N 458356A

9. Basic Settings Control System CS 20 for BM 20 / BM 200 12. . . . . . . . . . . . . . . . . . . .

Selecting Manual or Automatic Mode 12. . . . . . . . . . . . . . . . . . . . . . .

Selecting Pressure Display bar or psi 12. . . . . . . . . . . . . . . . . . . . . . .

10. Setting Pressure Control Parameters 13. . . . . . . . . . . . . . . . . . . . . . . . .

Parameter Overview Pressure Control 13. . . . . . . . . . . . . . . . . . . . . .

PSP = Pressure setpoint (manual mode) 13. . . . . . . . . . . . . . . . .

PSH = Pressure at pilot voltage Uhi 13. . . . . . . . . . . . . . . . . . . . . .

PSL = Pressure at 0 % pilot voltage 13. . . . . . . . . . . . . . . . . . . . . .

PSL, PSH and Uhi, graphic illustration 13. . . . . . . . . . . . . . . . . . . .

PAH = Pressure monitoring for overpressure with pressure control 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PAL = Pressure monitoring for underpressure with pressure control 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PrS = Variable pressure measuring range 15. . . . . . . . . . . . . . . .

1. Introduction 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2. Troubleshooting Table 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Service Display Error on Control System CS 20 for BM 20 / BM 200 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operation (contd.)

Troubleshooting

Page 5: Pressure Control for Bulk Melters Series BM 20 / BM 200emanuals.nordson.com/adhesives/English_Manuals/458356.pdf · Terminal Assignment. Pressure Control for Bulk Melters Series BM

Pressure Control for Bulk Melters Series BM 20 / BM 200 1

� 2000 Nordson CorporationAll rights reserved

PRC_BM 20 / BM 200Issued 06/00

P/N 458356A

Description

The pressure control for bulk melters in the series BM 20 / BM 200 –hereafter also referred to as pressure control – may be used only tocontrol the processing pressure for applications that process hot meltadhesives. The pressure control is based on frequency converters in theseries 8200 vector with function module application I/O and thecorresponding units for controlling drives with three-phase motors forwhich the speed can be varied. The pressure control may be used onlywith components and control systems approved by Nordson.

Any other use is considered to be unintended. Nordson will not be liablefor personal injury or property damage resulting from unintended use.

Intended use also includes the observance of Nordson safetyinstructions.

The pressure control feature may not be used under the followingconditions:

� After manipulation of electrical components

� At extremely high humidity (frequency converter is visibly wet)

� In defective condition.

WARNING: The surfaces of the frequency converter maybecome hot during operation.

1. Intended Use

Unintended Use – Examples –

2. Residual Risks

Page 6: Pressure Control for Bulk Melters Series BM 20 / BM 200emanuals.nordson.com/adhesives/English_Manuals/458356.pdf · Terminal Assignment. Pressure Control for Bulk Melters Series BM

Pressure Control for Bulk Melters Series BM 20 / BM 2002

� 2000 Nordson CorporationAll rights reserved

PRC_BM 20 / BM 200Issued 06/00

P/N 458356A

The pressure control feature consists of the following components:

Component Type Remark P/NFrequency converter E82EV751 Parameterized for pressure control –

with application I/O and keypad785 780

Motor Asynchronous gear motor WS 370 87 Hz, 230 VControl system CS 20Pressure sensor 0 V � Pmin

10 V � Pmax

linearInterface frequency converter/control system

Pressure setpoint (0 V � Pmin to 10 V � Pmax)

Actual pressure (0 V....10 V � Pcurrent)

Switching Pressure/speed mode

Control release

Motor overtemperature contact

The built-in frequency converter is factory-set (parameterized) so that theNordson A.C. motor with 230 VAC nominal voltage can be operatedwithout any further adjustment.

The frequency converter with the function module application I/O is usedto control pressure. The keypad is used to set parameters for the PIDcontroller. Refer to manual Frequency Converter Series 8200 vector.

3. Components of PressureControl Feature

4. Description of Functions

Frequency Converter forPressure Control

Page 7: Pressure Control for Bulk Melters Series BM 20 / BM 200emanuals.nordson.com/adhesives/English_Manuals/458356.pdf · Terminal Assignment. Pressure Control for Bulk Melters Series BM

Pressure Control for Bulk Melters Series BM 20 / BM 200 3

� 2000 Nordson CorporationAll rights reserved

PRC_BM 20 / BM 200Issued 06/00

P/N 458356A

002418

1

2

4

3

7

5

6

8

Fig. 1

1. Power supply connection and DC power supply

2. Plug-in socket relay outlet3. Keypad4. Function module application I/O

5. Terminal (digital)6. Terminal (analog)7. Jumper*8. Plug-in socket motor connection

*Jumper (factory setting):

A B C D

7 - 9 8 - 10 1 - 3 2 - 4

Page 8: Pressure Control for Bulk Melters Series BM 20 / BM 200emanuals.nordson.com/adhesives/English_Manuals/458356.pdf · Terminal Assignment. Pressure Control for Bulk Melters Series BM

Pressure Control for Bulk Melters Series BM 20 / BM 2004

� 2000 Nordson CorporationAll rights reserved

PRC_BM 20 / BM 200Issued 06/00

P/N 458356A

The block diagram shows the principle layout of the pressure controlfeature. The actual pressure measured by the pressure sensor iscompared to the pressure setpoint. The PID controller integrated into thefrequency converter generates a control output signal for the motorspeed according to the deviation.

NOTE: The pressure control feature is active only when the input E2 ison High (Also refer to parameter PSP � OFF). The keypad then displaysPS2.

002419

CAN bus

Pump

CS20 analog module

CS20 motor module

CS20 control panel

Pressure sensor

Actual pressure 0...10VDC

0-100 min-1

Sta

rt/S

top

Pre

ssur

e/sp

eed

mod

e

Pre

ssur

e/sp

eed

setp

oint

Act

ual s

peed

CS20 central module

X4

Pin

3/4

X3

Pin

3/4

0...1

0 V

DC

0...1

00 H

z

Fig. 2

Refer to manual Frequency Converter Series 8200 vector, sectionFrequency Converter for Pressure Control.

Block Diagram

5. Terminal Assignment

Page 9: Pressure Control for Bulk Melters Series BM 20 / BM 200emanuals.nordson.com/adhesives/English_Manuals/458356.pdf · Terminal Assignment. Pressure Control for Bulk Melters Series BM

Pressure Control for Bulk Melters Series BM 20 / BM 200 5

� 2000 Nordson CorporationAll rights reserved

PRC_BM 20 / BM 200Issued 06/00

P/N 458356A

InstallationWARNING: Allow only qualified personnel to perform thefollowing tasks. Observe and follow the safety instructions inthis document and all other related documentation.

The pressure control feature is parameterized before delivery.

WARNING: Risk of electric shock. Failure to observe can resultin personal injury, death and/or equipment damage.

WARNING: Disconnect unit from line voltage.

WARNING: The frequency converter is still energized afterswitching off. Wait at least 3 minutes before beginning anywork!

NOTE: Use only original Nordson frequency converters. They areparameterized and guarantee the required function. Refer to manualFrequency Converter Series 8200 vector, section Repair - ReplacingFrequency Converter.

When ordering a replacement frequency converter always include thecorresponding Nordson part number (P/N): Refer to Components ofPressure Control Feature.

� Defective fuses may be replaced only when there is no voltagesupplied to the unit. Use only fuses from Nordson original spare partsdeliveries. There are no fuses inside of the frequency converter.

� The plug-in terminals may only be plugged in and unplugged whenthere is no voltage being supplied to the unit.

1. Disconnect all plug connections and cables.

2. Loosen the screws on the mounting device and remove the frequencyconverter from the electrical cabinet.

3. Mount the new frequency converter.

4. Connect all cables and plug connections.

1. Delivery

2. Repair - ReplacingFrequency Converter

Page 10: Pressure Control for Bulk Melters Series BM 20 / BM 200emanuals.nordson.com/adhesives/English_Manuals/458356.pdf · Terminal Assignment. Pressure Control for Bulk Melters Series BM

Pressure Control for Bulk Melters Series BM 20 / BM 2006

� 2000 Nordson CorporationAll rights reserved

PRC_BM 20 / BM 200Issued 06/00

P/N 458356A

OperationWARNING: Allow only qualified personnel to perform thefollowing tasks. Observe and follow the safety instructions inthis document and all other related documentation.

� Avoid frequent switching of the mains in order to prevent an overloadof the internal switching current limiter. Switching may not occur moreoften than every three minutes.

� When condensation has formed on the frequency converter, it mustfirst evaporate before the unit can be started up.

The pre-adjusted PID parameters for the frequency converter can bemodified via the keypad.

NOTE: The parameters for the frequency converters are factory set.Modifications should be made only in exceptional cases (only to adaptthe PID controller for pressure control) and only by trained personnel.Refer to Frequency Converter Series 8200 vector, section Operation,Parameterization.

The PID control parameters may need to be modified for specialapplications.

Parameters for the PID Controller

Parameter Type Setting range Step Important Factorysetting

Cust.entry

Cust.entry

C0070 Amplification process controller(P)

0.00 to 300.00 0.01 0.00 =P portion inactive

3.64

C0071 Reset time process controller(I)

10 to 9999 1 9999 = I portion inactive

171

C0072 Differential portionprocess controller(D)

0.0 to 5.0 0.1 0.0 = D portion inactive

0.0

1. Operating Tips

2. Setting ParametersFrequency Converter

PID Controller

Page 11: Pressure Control for Bulk Melters Series BM 20 / BM 200emanuals.nordson.com/adhesives/English_Manuals/458356.pdf · Terminal Assignment. Pressure Control for Bulk Melters Series BM

Pressure Control for Bulk Melters Series BM 20 / BM 200 7

� 2000 Nordson CorporationAll rights reserved

PRC_BM 20 / BM 200Issued 06/00

P/N 458356A

Reset time

Parameter Set value Resulting reset time T N

C0071 10 ... 5000

5000 ... 6000

6000 ... 7000

7000 ... 8000

8000 ... 9998

10 ms ... 5 s

5 s ... 10 s

10 s ... 100 s

100 s ... 1000 s

1000 s ... 9998 s

Set the parameters such that when the setpoint or actual value ischanged, the target size is reached quickly and controlled overswing iskept to a minimum.

Page 12: Pressure Control for Bulk Melters Series BM 20 / BM 200emanuals.nordson.com/adhesives/English_Manuals/458356.pdf · Terminal Assignment. Pressure Control for Bulk Melters Series BM

Pressure Control for Bulk Melters Series BM 20 / BM 2008

� 2000 Nordson CorporationAll rights reserved

PRC_BM 20 / BM 200Issued 06/00

P/N 458356A

Refer to manual Frequency Converter Series 8200 vector.

The frequency converter is maintenance-free. For information regardingmaintenance of the pressure sensor, refer to the pressure sensormanual.

The indication lamps and the indicator light (if present) show theoperating modes Collective fault, Switched on and Ready.

The pressure control feature generates messages according to thefollowing chart. Refer to manual Control System CS 20 for Bulk MeltersBM 20 / BM 200, section Control Panel, Indication Lamps and IndicatorLight.

Indication lamp Message(s) NotesRed (17) Underpressure alarm Display 30: Plo appears*

Collective fault Overpressure alarm Display 30: Phi appears*

* Refer to manual Control System CS 20 for Bulk Melters BM 20 / BM 200, section Control Panel

3. Displays FrequencyConverter

4. Maintenance PressureControl

5. Indication Lamps andIndicator Light Control System CS 20 forBM 20 / BM 200

Page 13: Pressure Control for Bulk Melters Series BM 20 / BM 200emanuals.nordson.com/adhesives/English_Manuals/458356.pdf · Terminal Assignment. Pressure Control for Bulk Melters Series BM

Pressure Control for Bulk Melters Series BM 20 / BM 200 9

� 2000 Nordson CorporationAll rights reserved

PRC_BM 20 / BM 200Issued 06/00

P/N 458356A

This section explains operation of the motor part of the control systemCS 20 for bulk melters BM 20 / BM 200 for pressure control.

Refer to Control System CS 20 for Bulk Melters BM 20 / BM 200, sectionOperating the Motor Part for detailed information regarding operation.

The pressure control feature is activated via the parameter PSP � OFF.In place of the speed, Pcr is displayed as an indication for the pressurecontrol. Instead of a speed, a pressure setpoint must be determined. Itcan be entered as a value (manual mode) or set via pilot voltage(automatic mode). The speed required to reach the pressure is calculatedinternally by the control system.

When pressure is controlled, the parameters PSL, PSH, PSP, PAH, PALand the display Pcr are present. For a description of the parameters,refer to Display Overview, Settings Overview Control System CS20 forBM 20 / BM 200.

NOTE: All input is in bar, even when the pressure display is switched topsi.

The measuring range of the pressure sensor can be modified with theparameter PRS or with the selector switch on the analog module. If aftermodification the values are no longer within the permitted (measuring)range, the parameters are returned to the factory settings.

6. Pressure Control Control System CS 20 forBM 20 / BM 200

Page 14: Pressure Control for Bulk Melters Series BM 20 / BM 200emanuals.nordson.com/adhesives/English_Manuals/458356.pdf · Terminal Assignment. Pressure Control for Bulk Melters Series BM

Pressure Control for Bulk Melters Series BM 20 / BM 20010

� 2000 Nordson CorporationAll rights reserved

PRC_BM 20 / BM 200Issued 06/00

P/N 458356A

This section explains the displays of the control system CS 20 for bulkmelters BM 20 / BM 200 for pressure control. Refer to Control SystemCS 20 for Bulk Melters BM 20 / BM 200 for detailed information regardingoperation.

The following displays appear additionally when the pressure controlfeature is used. Also refer to Control System CS 20 for Bulk MeltersBM 20 / BM 200, section Operating the Motor Part.

Pressure at 0 % pilot voltage(Automatic mode)

Pressure at pilot voltage Uhi(Automatic mode)

Parameters and valueswith pressure control

Pressure setpoint (manual mode)

Overpressure value (correspondsto Phi with speed control)

Underpressure value(corresponds to Plo with speedcontrol)

Pressure control active

(Instead of speed display)

Overpressure alarm (special function)

Underpressure alarm (special function)

002420

Normal display

Speed min-1 (rpm) PressureNOTE: For pressure displays in psi,multiply the value by 10.

Switching pressure display bar / psi

Variable pressure measuring range1 to 680 bar (14.5 to 9860 psi)(special function)

See also Parameter Overview.

See also Parameter Overview.

Automatic fault displays

Service display

Fig. 3

7. Displays Control SystemCS 20 for BM 20 / BM 200

Display Overview

Page 15: Pressure Control for Bulk Melters Series BM 20 / BM 200emanuals.nordson.com/adhesives/English_Manuals/458356.pdf · Terminal Assignment. Pressure Control for Bulk Melters Series BM

Pressure Control for Bulk Melters Series BM 20 / BM 200 11

� 2000 Nordson CorporationAll rights reserved

PRC_BM 20 / BM 200Issued 06/00

P/N 458356A

This section describes the setting parameters of the control systemCS 20 for bulk melters BM 20 / BM 200 for pressure control. Refer toControl System CS 20 for Bulk Melters BM 20 / BM 200 for basicinformation on operation and other parameters.

NOTE: OFF means that this function is switched off. Do this by setting to0 (zero).

Parameter Function / possible setting Setting range Factory setting Notes

PSL Pressure at 0 % pilot voltage 0.1 bar to 70 % of end valueof pressure measuringrange

1 % of end valueof pressuremeasuring range

PSH Pressure at pilot voltage Uhi 0.1 bar to 70 % of end valueof pressure measuringrange

10 % of end valueof pressuremeasuring range

Refer to manual ControlSystem CS 20 for Bulk MeltersBM 20 / BM 200 for Uhi

PSP Pressure setpoint for manual mode OFF or 0.1 bar to 70 % ofend value of pressuremeasuring range

0.1 bar Also refer to page 14

PAH Pressure monitoring for overpressurewith pressure control

OFF or 2.0 to 30 % of endvalue of pressure measuringrange

OFF

PAL Pressure monitoring for underpressurewith pressure control

OFF or 2.0 to 30 % of endvalue of pressure measuringrange

OFF

PSI Select pressure display in bar or psi no (bar) / yes (psi) (no) bar Option

PrS Variable pressure measuring range 1 to 680 bar 100 bar

8. Settings Overview Control System CS 20 forBM 20 / BM 200

Motor Part

Page 16: Pressure Control for Bulk Melters Series BM 20 / BM 200emanuals.nordson.com/adhesives/English_Manuals/458356.pdf · Terminal Assignment. Pressure Control for Bulk Melters Series BM

Pressure Control for Bulk Melters Series BM 20 / BM 20012

� 2000 Nordson CorporationAll rights reserved

PRC_BM 20 / BM 200Issued 06/00

P/N 458356A

Refer to Control System CS 20 for Bulk Melters BM 20 / BM 200, sectionOperating the Motor Part.

Manual mode: The pressure setpoint is equal to the value entered viaparameter PSP and remains constant.

Automatic mode: The pressure setpoint is changed via pilot voltage.The parameters PSL, PSH and Uhi can be adjusted. PSP must be set� OFF!

NOTE: Automatic mode is only possible if pilot voltage is available.

1. Press key 27 for approx. 2 seconds (until –P– blinks in display 30).

2. Press key 21 until the desired operating mode appears. In manualmode, symbol 26 lights.

Pressure can be displayed in bar or psi. For display in psi, the rightdecimal point in display 31 lights.

NOTE: For display in psi, multiply the value by 10.

1. Press and hold keys 22 and 23 and press key 27 for approx. 2 seconds. Displays 30 and 31 blink.

2. Press key 22 or 23 until display 31 shows PSi.

3. Press and hold key 27 for approx. 2 seconds, then use key 22 or 23to set YES (psi) or no (bar).

4. End Selecting bar or psi: Press and hold keys 22 and 23 and presskey 27 for approx. 2 seconds.

bar Factory setting: ���

PSI Setting range: ��� � � � � � ���

9. Basic Settings Control System CS 20 forBM 20 / BM 200

Selecting Manual or AutomaticMode

Selecting Pressure Display baror psi

Page 17: Pressure Control for Bulk Melters Series BM 20 / BM 200emanuals.nordson.com/adhesives/English_Manuals/458356.pdf · Terminal Assignment. Pressure Control for Bulk Melters Series BM

Pressure Control for Bulk Melters Series BM 20 / BM 200 13

� 2000 Nordson CorporationAll rights reserved

PRC_BM 20 / BM 200Issued 06/00

P/N 458356A

Refer to Control System CS 20 for BM 20 / BM 200, section SettingParameters, Operating the Motor Part.

PSP = Pressure setpoint (manual mode)

The function pressure control can be deactivated with this parameter (OFF). Then all other pressure parameters are no longer displayed. WhenPSP = OFF, speed control is active.

PSP Factory setting: 0.1 bar Note: Corresponds to the speed setpoint in manual mode with speedcontrolSetting range: OFF or 0.1 bar to 70 % of end value of

pressure measuring range

control.

Setting increments: Up to 100 bar: 0.1

Over 100 bar: 1.0

PSH = Pressure at pilot voltage Uhi

Refer to PSL, PSH and Uhi, graphic illustration

PSH Factory setting: 10 % of end value of pressuremeasuring range

Note: Corresponds to rhi with speed control.

If the operator attempts to set the value PSH lower than PSL, theSetting range: 0.1 bar to 70 % of end value of

pressure measuring range

If the o erator attem ts to set the value PSH lower than PSL, thevalue PSL is automatically reduced.

Setting increments: Up to 100 bar: 0.1

Over 100 bar: 1.0

PSL = Pressure at 0 % pilot voltage

Refer to PSL, PSH and Uhi, graphic illustration

PSL Factory setting: 1 % of end value of pressuremeasuring range

Note: Corresponds to rLo with speed control.

If the operator attempts to set the value PSL higher than PSH, theSetting range: 0.1 bar to 70 % of end value of

pressure measuring range

If the o erator attem ts to set the value PSL higher than PSH, thevalue PSH is automatically increased.

Setting increments: Up to 100 bar: 0.1

Over 100 bar: 1.0

PSL, PSH and Uhi, graphic illustration

20 40 60 80 1000

20

40

60

80

100

0

PSL = 1 bar / PSH = 70 bar / Uhi = 100 %

20 40 60 80 1000

20

40

60

80

100

0

Pre

ssur

e in

bar

PSL = 25 bar / PSH = 70 bar / Uhi = 100 %

20 40 60 80 1000

20

40

60

80

100

0

PSL = 20 bar / PSH = 30 bar / Uhi = 100 %

20 40 60 80 1000

20

40

60

80

100

0

PSL = 1 bar / PSH = 70 bar / Uhi = 60 %

Pre

ssur

e in

bar

Pre

ssur

e in

bar

Pre

ssur

e in

bar

002421Pilot voltage in % Pilot voltage in % Pilot voltage in % Pilot voltage in %

Fig. 4 Pressure to pilot voltage – Examples for 100 bar pressure sensor –

10. Setting Pressure ControlParameters

Parameter Overview PressureControl

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Pressure Control for Bulk Melters Series BM 20 / BM 20014

� 2000 Nordson CorporationAll rights reserved

PRC_BM 20 / BM 200Issued 06/00

P/N 458356A

PAH = Pressure monitoring for overpressure with pressurecontrol

PAL = Pressure monitoring for underpressure with pressurecontrol

Overpressure and underpressure values are differential values.

The purpose of pressure monitoring is to indicate underpressure or overpressure and to stop the motor if appropriate when overpressure occurs.

PAL = Underpressure: When the pressure falls below the alarm limit (setpoint minus underpressure value) for longer than 10 seconds, PALappears in display 30 (Fig. 1) and the red indication lamp collective fault lights up (error number 242). If the alarm limit is below 0 bar (e.g..setpoint = 2 bar, PAL = 3 bar), no underpressure alarm can be triggered (Refer to example).

PAH = Overpressure: When the pressure exceeds the alarm limit (setpoint plus overpressure value) for longer than 20 seconds, PAH appears indisplay 30 (Fig. 1) and the red indication lamp collective fault lights up (error number 241). If the alarm limit is exceeded for longer than 60seconds, the motor is stopped and the the green indication lamp ready goes off (error number 240).

Underpressure and overpressure monitoring can be deactivated by setting the parameter to less than 2 % (display OFF).

The error indications PAL and PAH are reset by switching the motor off and on.

PAL

PAH

Factory setting: OFF Note: Special function

Note: PAH corresponds to Phi and PAL corresponds to Plo with speedcontrol.

Example: p [bar]Setting range: OFF or 2.0 % to 30 % of end

value of pressure measuringrange

p

100 %

[ ]

PAH

PAL 3 bar

Setting increments: Up to 100 bar: 0.1

Over 100 bar: 1.0100 System pressure [%]0

2

Note: The parameters indicate the maximum permitted deviation from the setpoint.

Page 19: Pressure Control for Bulk Melters Series BM 20 / BM 200emanuals.nordson.com/adhesives/English_Manuals/458356.pdf · Terminal Assignment. Pressure Control for Bulk Melters Series BM

Pressure Control for Bulk Melters Series BM 20 / BM 200 15

� 2000 Nordson CorporationAll rights reserved

PRC_BM 20 / BM 200Issued 06/00

P/N 458356A

Refer also to Setting Parameters.

PrS = Variable pressure measuring range

The variable pressure measuring range serves to adjust special pressure sensors to the control system.

PrS Factory setting: 100 bar (1450 psi) Note: Special function; the parameter is only available if the selectorswitch S 1 of the analog module is in position 5 (see Analog Module)Setting range: 1 to 680 bar (14 to 9860 psi) switch S 1 of the analog module is in position 5 (see Analog Module)

Setting increments: Up to 100 bar: 0.1

Over 100 bar: 1.0

Parameter Overview (contd.)

Page 20: Pressure Control for Bulk Melters Series BM 20 / BM 200emanuals.nordson.com/adhesives/English_Manuals/458356.pdf · Terminal Assignment. Pressure Control for Bulk Melters Series BM

Pressure Control for Bulk Melters Series BM 20 / BM 20016

� 2000 Nordson CorporationAll rights reserved

PRC_BM 20 / BM 200Issued 06/00

P/N 458356A

TroubleshootingWARNING: Allow only qualified personnel to perform thefollowing tasks. Observe and follow the safety instructions inthis document and all other related documentation.

Refer to Frequency Converter Series 8200 vector, sectionTroubleshooting and Control System CS 20 for Bulk Melters BM 20 / BM 200. The troubleshooting tables do not include all possible faults,only those which may typically occur.

The following faults are not covered by the troubleshooting tables:

� Installation errors

� Operation errors

� Loose plug and screw connections (defective contacts).

NOTE: If the fault can not be remedied by switching the frequencyconverter off and on, the unit must be repaired or replaced by customerservice.

Problem Possible cause

Fault or defect frequency converter Refer to Frequency Converter Series 8200 vector, sectionTroubleshooting and the section Service Display Error on ControlSystem CS 20 for BM 20 / BM 200 following this table.

Fault or defect Control System CS 20 forBulk Melters BM 20 / BM 200

Refer to Control System CS 20 for Bulk Melters BM 20 / BM 200

Defect pressure sensor Refer to manual Pressure Sensor, replace if necessary

1. Introduction

2. Troubleshooting Table

Page 21: Pressure Control for Bulk Melters Series BM 20 / BM 200emanuals.nordson.com/adhesives/English_Manuals/458356.pdf · Terminal Assignment. Pressure Control for Bulk Melters Series BM

min–1 barpsiM1

30 31

Pressure Control for Bulk Melters Series BM 20 / BM 200 17

� 2000 Nordson CorporationAll rights reserved

PRC_BM 20 / BM 200Issued 06/00

P/N 458356A

The error displays can be shown in the service display of the motor part.Errors which do not appear in display 30 (e.g. r_d) are displayed as errornumbers in display 31 of motor panel 1. Refer to manual CS 20 forBM 20 / BM 200 section Service Display Error.

NOTE: When errors are caused by situations not described here,Nordson’s customer service can help.

Error Cause / Troubleshooting

Err

or n

umbe

r

240 Overpressure alarm from pressure monitoring.

Value of parameter PAH was exceeded forlonger than 60 seconds (Refer to Operating theMotor Part, Parameter Overview).

The error indication Phi appears in display 30.

Motor is stopped.

Reset overpressure alarm (switch motor on/off), then check the following:

- Is the safety valve polluted and thus blocked?

- Is the safety valve set incorrectly?

- Is the safety valve defective?

- Is the filter polluted?

- Is the adhesive temperature too low?

- Is the value of parameter Phi below or too close to the safety valve setting?

- With pressure control via pilot voltage: Was pilot voltage changed too quickly(EMERGENCY OFF parent machine)?

241 Overpressure alarm from pressure monitoring.

Value of parameter PAH was exceeded forlonger than 20 seconds (Refer to Operating theMotor Part, Parameter Overview).

The error indication Phi appears in display 30.

Reset overpressure alarm (switch motor on/off), then check the following:

- Is the safety valve polluted and thus blocked?

- Is the safety valve set incorrectly?

- Is the safety valve defective?

- Is the filter polluted?

- Is the adhesive temperature too low?

- Is the value of parameter Phi below or too close to the safety valve setting?

- With pressure control via pilot voltage: Was pilot voltage changed too quickly(EMERGENCY OFF parent machine)?

242 Underpressure alarm from pressure monitoring.

Value of parameter PAL was exceeded forlonger than 20 seconds (Refer to Operating theMotor Part, Parameter Overview).

The error indication Plo appears in display 30.

Reset underpressure alarm (switch motor on/off), then check the following:

- Is the safety valve polluted and thus blocked?

- Is the safety valve set incorrectly?

- Is the safety valve defective?

- Is the drum empty?

- Is the pump block of the gear pump or gerotor pump worn?

- Is the pump defective?

Service Display Error onControl System CS 20 forBM 20 / BM 200

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Pressure Control for Bulk Melters Series BM 20 / BM 20018

� 2000 Nordson CorporationAll rights reserved

PRC_BM 20 / BM 200Issued 06/00

P/N 458356A