P&B MPC2000+ Manuel utilisateur

MPC2000+ Technical Manual

ISSUE 7 28/9/99

MPC2000+

Motor Protection Controller

P&B Engineering

Belle Vue Works

Boundary Street

Manchester

M12 5NG

Tel: 0161 230 6363

Fax:0161 230 6464

E-mail m[email protected]

MPC2000+ Technical Manual

ISSUE 7 28/9/99

Contents

CONTENTS................................................................................................................................................................... 2

1. INTRODUCTION..................................................................................................................................................... 1

2. SUMMARY OF MPC2000+ FEATURES .............................................................................................................. 2

2.1. CONTROL FUNCTIONS ............................................................................................................................................... 2

2.2. PROTECTIVE FUNCTIONS ........................................................................................................................................... 2

2.3. DISPLAYED DATA...................................................................................................................................................... 2

2.4. FEATURES ................................................................................................................................................................. 3

3. TECHNICAL SPECIFICATION ............................................................................................................................ 3

3.1. AUXILIARY POWER SUPPLY....................................................................................................................................... 3

3.2 PHASE CURRENT INPUTS ............................................................................................................................................ 3

3.3. EARTH FAULT CURRENT INPUTS ............................................................................................................................... 4

3.4. LINE VOLTAGE INPUTS.............................................................................................................................................. 4

3.5. THERMISTOR/RTD INPUTS........................................................................................................................................ 4

3.6. OVERLOAD ALARM AND TRIP CURVES ..................................................................................................................... 4

3.7. CURRENT UNBALANCE ALARM AND TRIP ................................................................................................................. 4

3.8. FAULT TIME DELAYS ................................................................................................................................................ 5

3.9. RELAY CONTACTS..................................................................................................................................................... 5

3.10. DIELECTRIC STRENGTH ........................................................................................................................................... 5

3.11. AUTO RESTART CIRCUITRY..................................................................................................................................... 5

4. MPC2000+ SCHEMATIC DIAGRAMS................................................................................................................. 5

5. MPC2000+ MEASURED INPUTS.......................................................................................................................... 7

5.1. POWER SUPPLY (LIVE-4, NEUTRAL-5, EARTH-7) ...................................................................................................... 7

5.2. VT INPUTS (L1-16, L2-18, L3-20, N-17,19,21-IF USED) ........................................................................................... 7

5.3. CURRENT SENSOR INPUTS (10,11,12,13,14,15) ........................................................................................................ 7

5.4. EARTH FAULT CT INPUTS (8,9)................................................................................................................................. 7

5.5. TEMPERATURE INPUTS (23,24,25;26,27,28;29,30,31) .............................................................................................. 7

5.6. POWER. ..................................................................................................................................................................... 7

6. MPC2000+ CONTROL INPUTS/OUTPUTS......................................................................................................... 8

6.1. OUTPUT RELAYS ....................................................................................................................................................... 8

6.2. CONTROL INPUTS ...................................................................................................................................................... 8

6.2.1. Key Switch......................................................................................................................................................... 8

6.2.2. Emergency Stop................................................................................................................................................. 8

6.2.3. ESD 3 Relay ...................................................................................................................................................... 8

6.2.4. Start A and Start B Input Terminals (78,76) ..................................................................................................... 8

6.2.5. Aux. Live (55,58,61,65,68,71,74,77) ................................................................................................................. 8

6.2.6. Stop Input (79) .................................................................................................................................................. 8

6.2.7. Plant Interlock (75)........................................................................................................................................... 9

6.2.8. Local/Remote (73)............................................................................................................................................. 9

6.2.9. PLC/Serial Port (72) ......................................................................................................................................... 9

6.2.10. Authorise Key (70) .......................................................................................................................................... 9

6.2.11. PLC Reset (69) ................................................................................................................................................ 9

6.2.12. PLC Control A (67)......................................................................................................................................... 9

6.2.13. PLC Control B (66)......................................................................................................................................... 9

6.2.14. Serial Port (+ve = 3, -ve = 1, Shield = 2) ...................................................................................................... 9

6.2.15. Speed Switch (64)............................................................................................................................................ 9

6.2.16. Contactor A and B Status (62,63,59,60) ......................................................................................................... 9

6.2.17. Isolator (56,57) ............................................................................................................................................. 10

6.2.18. External Fault 2 (52)..................................................................................................................................... 10

6.2.19. External Test Position (53)............................................................................................................................ 10

6.2.20. External Fault 3 (53)..................................................................................................................................... 10

MPC2000+ Technical Manual

ISSUE 7 28/9/99

6.2.21. Emergency Stop (54) .....................................................................................................................................10

7. MPC2000+ FACEPLATE FUNCTIONS ..............................................................................................................11

7.1. LED STATUS PANEL ................................................................................................................................................11

8. MPC FUNCTIONAL KEYPAD & DISPLAY......................................................................................................12

LIQUID CRYSTAL DISPLAY..............................................................................................................................................12

9. MPC2000+ SETTING PAGES...............................................................................................................................15

9.1. MPC2000+ COMMUNICATION SETTINGS.................................................................................................................15

9.2. SYSTEM SETTINGS ...................................................................................................................................................15

9.3. VOLTAGE SETTINGS.................................................................................................................................................18

9.4. CURRENT SETTINGS.................................................................................................................................................18

9.5. TEMPERATURE SETTINGS ........................................................................................................................................22

9.6. TRIPPING/ALARM OPTIONS ......................................................................................................................................22

9.7. MPC2000+ DATA DISPLAY PAGES..........................................................................................................................25

9.8. MPC2000+ SETTING PAGES SUMMARY ..................................................................................................................26

9.9. MPC2000+ DATA PAGES SUMMARY.......................................................................................................................28

10. MPC2000+ COMMUNICATIONS......................................................................................................................29

11. MPC2000+ FLASH/CONSTANT MESSAGES.................................................................................................29

12. MPC2000+ INTERNAL TEST ROUTINES .......................................................................................................30

13. MPC2000+ FAULT FINDING .............................................................................................................................31

14. MPC2000+ THERMAL OVERLOAD PROTECTION.....................................................................................32

15. MPC2000+ INSTALLATION ..............................................................................................................................36

15.1. CASING ..................................................................................................................................................................36

15.2 MPC2000+ TERMINATIONS....................................................................................................................................37

16. STARTING METHODS. ......................................................................................................................................41

16.1 DIRECT ON LINE.....................................................................................................................................................41

16.2 STAR/DELTA...........................................................................................................................................................41

16.3 REVERSING.............................................................................................................................................................41

16.4. TWO SPEED. ..........................................................................................................................................................41

16.5. CIRCUIT BREAKER. ................................................................................................................................................41

17. FAST SCAN ANALOGUE DATA .......................................................................................................................42

18. CHANGES TO THE MANUAL...........................................................................................................................42

MPC2000+ Technical Manual

P&B Engineering ISSUE 7 28/9/99 Page 1

1. Introduction

The MPC2000+ Goldstart Motor Protection Controller is a highly sophisticated microprocessor based motor

protection and control unit, specifically designed to be used on motors with full load currents upto 2000 Amps, at any

voltage and as an integral part of any type or manufacture of Motor Control Centre. All of the latest features are

included in the MPC2000+ to allow total control, protection and monitoring of motor starters either by direct hard

wire inputs or via the RS485 serial port.

The MPC2000+ can be used to control Direct on Line, Star-Delta, Reversing and Two Speed motor starters and by

the use of RMS current sampling, enables the MPC2000+ to be used in conjunction with A.C. Variable speed drives

or Soft Starters, without any affect on the protection performance . The control of circuit breakers can also be

accomplished using the MPC2000+.

The MPC2000+ monitors current, voltage and temperature inputs to provide the most comprehensive motor

protection package ever produced by P & B Engineering. This combined with all the necessary control and

monitoring functions and a high speed communications facility all within a small easily installed package at a cost

which is less than previously charged for a sophisticated microprocessor motor protection relay, make the

MPC2000+ the most attractive Motor Protection and Control device available today.

All hard wired control inputs are connected to, the MPC2000+ via optically isolated inputs to enable all starting,

stopping and tripping commands to be carried out by the MPC2000+. Status of all individual hard wired contacts is

also provided both locally via the liquid crystal display and remotely via the RS485 communications port.

All MPC2000+ setting parameters are programmed independently for each unit via the integral keypad and liquid

crystal display on the front plate or via the RS485 communications port and the IBM PC based MPCSET software

package available with the MPC2000+.

During operational conditions the LCD also gives access to accurate running, statistical and fault data such as; Phase

Volts, Phase Amps, thermal capacity, Time to Trip, Phase unbalance, Motor hours run, number of starts and many

more.

Light Emitting Diodes mounted on the front plate give visual indication of the motor status such as Motor Running,

Motor Stopped, Alarm or Trip conditions etc.

Flexible high speed control via PLC or DCS systems is obtained through the MPC2000+'s RS485 communications

port, allowing computer access to full control and monitoring of motor data, including : running data, motor statistical

data and control input status.

All MPC2000+ protective functions can be individually configured to enable or disable tripping and alarm functions,

enabling protection to be simplified for the very lowest motor ratings. In addition each protective function can be set

to allow self or manual reset after alarm or trip and manual reset can be set to allow resets after an alarm or trip to be

made locally, remotely or by authorised personnel only.

A unique 'Protection Only' mode enables the MPC2000+ to be installed for protection only purposes, this requires

only conventional current transformer and trip output wiring, enabling simple installation into existing equipment with

minimum wiring modifications. This allows users to take full advantage of the enhanced protective capability and the

RS485 communication facilities provided by the MPC2000+.

MPC2000+ Technical Manual

Page 2 ISSUE 7 28/9/99

2. Summary of MPC2000+ Features

2.1. Control Functions

Full Control of:

Direct on Line Motor Starters

Direct on line Reversing Motor Starters

Direct on Line 2 Speed Motor Starters

Star/Delta Motor Starters

Undervoltage Dip Restart Facility

Motor Starts Limitation

Integral Start & Stayput Stop Buttons

Circuit Breakers.

2.2. Protective Functions

Voltage Based:

3 Phase Undervoltage Protection

3 Phase Overvoltage

Phase Sequence Protection

Phase Loss Protection

Current Based:

Thermal Overload Protection

Load increase Alarm

Thermal Capacity Pre-Alarm

Locked Rotor/Stall Protection

2 Stage Undercurrent Protection

High Set Overcurrent Protection

Low Set Overcurrent Protection

2 Stage Current Unbalance Protection

Excess Starting Time Protection

2 Stage Earth Fault Protection

Excess No of Starts Protection

RTD/Thermistor Based:

3 Channel RTD/Thermistor Temperature Protection

2.3. Displayed Data

Measured Data

Both Phase Volts and Line Volts

Phase Amps

Earth Fault Current

RTD/Thermistor Channel resistance

Power VA

Power KW

Power Factor

Calculated Data

Motor Load - Percentage FLC

Thermal Capacity Used

Time to Trip

Time to Start

Unbalance Current

MPC2000+ Technical Manual

P&B Engineering ISSUE 7 28/9/99 Page 3

Logic Inputs Status

Motor Available Indication

Individual Status of all Input Contacts

Statistical Data

Motor Hours Run

Number of Motor Starts

Last Start Time

Last Peak Starting Current

No of Motor Trips

Fault Data

Last Fault

Last Alarm

Phase Currents at Time of Trip

Earth Fault Current at Time to Trip

Phase Volts at Time of Trip

2.4. Features

LCD Display for Setting Parameters and Displayed Data.

Compact Dedicated Current Sensor

Integral Start & Stop facilities

Functional Keypad enables settings to be made independent of communications.

IBM PC based software enables Setting Parameters to be configured via RS485 Port.

All functions operate fully independently of communications.

Non Volatile Memory for all setting parameters calculated, statistical and fault data.

Full self diagnostics and internal watchdog facility.

RS485 port enables full control and monitoring by remote DCS/PLC systems.

3. Technical Specification

3.1. Auxiliary Power Supply

AC Nominal: 110V AC, Range: 80 - 135V AC

240V AC, Range: 160 - 270V AC

Frequency: 45 - 65 Hz

Maximum Power Consumption: 20VA

3.2 Phase Current Inputs

Method: True RMS, Sample time 0.5mS

Range: 0.05 to 12 x Phase CT Primary Amps

Full Scale 12 x Phase CT Primary Amps setting

Accuracy: +/- 1.5% for 0.9 to 1.5 x CT Primary

+/- 5% above 1.5 x CT Primary

+/- 3% + 0.02 below 0.9 x CT Primary

MPC2000+ Technical Manual

Page 4 ISSUE 7 28/9/99

3.3. Earth Fault Current Inputs

Method: True RMS, sample time 0.5mS

Range: 0.05 to 1.0 x E/F CT Primary

Full Scale: 1.0 x E/F CT Primary Amps Setting

Accuracy: +/- 1.5% of Full Scale

3.4. Line Voltage Inputs

Method: True RMS, sample time 0.5mS

Without VT Transformer

Range: 90 - 660V AC

Accuracy: +/- 1.0% of Full Scale

With VT Transformer

Range: 90 - 660V x (VT Primary/VT Secondary)

Limited to 25kV

Accuracy: +/- 1.0% of Full Scale

3.5. Thermistor/RTD Inputs

Time Delay: 0.5 +/- 0.2 seconds

Thermistors Range: 0.1 - 30 Kilo-Ohms

Accuracy: +/- 0.1 Kilo-Ohm up to 5 Kilo-Ohm

+/- 3% above 5 Kilo-Ohm

RTD's Range: 100 to 240 Ohms

Accuracy: +/- 3%

Max. Wire Resistance: 25 Ohms

3.6. Overload Alarm and Trip Curves

Fault Time Accuracy: +/- 1 second up to 10 seconds

+/- 1 second +/- 2% above 10 seconds

Threshold Current Level: Overload Setting +/- 1.5%

3.7. Current Unbalance Alarm and Trip

Method: Unbalance = 100 x (Imax - Imin) / Ir %

Where Imax = max. of 3 phase currents

Imin = min. of 3 phase currents

Ir = Larger of Imax or Motor FLC

Alarm

Threshold Unbalance Level: 50% of Unbalance current +/- 2%

Fixed Time Delay Accuracy: 1.0 +/- 0.5 seconds

Trip Curves

Threshold Unbalance Level: Unbalance Current Setting +/- 2%

Trip Time Accuracy: +/- 1 second up to 10 seconds

+/- 1 second +/- 2% above 10 sec.

MPC2000+ Technical Manual

P&B Engineering ISSUE 7 28/9/99 Page 5

3.8. Fault Time Delays

Accuracy: +/- 0.5 seconds or +/- 2% of time

Exceptions

High Set Over-current: -0.1 to +0.2 sec. up to 1 second

Earth Fault Trip: -0.1 to +0.2 sec. for less than

1 second delay Total Run Time

Accuracy: +/- 2%

3.9. Relay Contacts

Rated Load: 2.5A @ 250V AC/8A @ 30V DC (Resistive)

Maximum Operating Voltage: 280V AC

Maximum Operating Current: 2.5 Amps

3.10. Dielectric Strength

2000V AC for 1 minute, between ground and:

* Current Inputs

* Voltage Inputs

* Auxiliary Power Supply, with 1000pF Suppression Capacitors removed

* Control Terminals, with 1000pF Suppression Capacitors removed.

3.11. Auto Restart Circuitry

Accuracy: +/- 20%

4. MPC2000+ Schematic Diagrams

The following diagram shows the connection diagrams of the MPC2000+ unit when used for Protection and Control.

The following points should be noted:

It is recommended that the 3 phase input voltage should be fully used as the Power & Power Factor functions will not

work with a single phase reference.

We recommend that the reference voltage is fuse protected.

For core balance Earth Fault protection a signal converter is available which converts the 1 amp CT output into the

format required by the unit.

The internally mounted Stayput Stop Push-button output contacts are wired to terminals such that these can be directly

wired to interrupt the contactor circuit or can be connected back into the stop input of the MPC2000+ to provide

indication.

For Star/Delta starters with a 3 contactor configuration the Alarm relay can be designated to control the Run

contactor.

MPC2000+ Technical Manual

Page 6 ISSUE 7 28/9/99 P&B Engineering

33 34 32 36 35

17,19,21

(-)

(+)

MPC2000+ WIRING DIAGRAM

MPC2000+

27 25

28 23

26 24

27 25

457

55 52 5355

STOP [NC]

START CONTACTOR A [NO]

START CONTACTOR B [NO]

PLANT INTERLOCK [OPEN=LOCKED OUT]

LOCAL/REMOTE [OPEN=LOCAL]

PLC/SERIAL PORT [OPEN=PLC]

AUTHORISED KEY [CLOSED=AUTHORISED]

PLC RESET [NO]

PLC CONTROL A [OPEN=STOP]

PLC CONTROL B [OPEN=STOP]

SPEED SWITCH [OPEN=HIGH]

CONTACTOR A STATUS

CONTACTOR B STATUS

ISOLATOR

EXTERNAL EMERGENCY STOP [NC]

EXTERNAL FAULT 3

EXTERNAL FAULT 2

OR SYSTEM TEST

[SET BY DIP SWITCH 1]

110/240V AC

INTERNAL

POWER

SUPPLY ON

LOGIC SUPPLY

ALT. AUX POWER SUPPLY

3 THERMISTOR OR PT100 INPUTS

RS485 SERIAL PORT

SHIELD

MEASURMENT

VOLTAGES

AUX 2 RELAY [TRIP]

AUX 1 RELAY [ALARM]

GND

THERMISTOR

[0.1K-30K]

PT100

[100-240 OHMS]

CONTACT SHOWN IN

DE-ENERGISED STATE

12 11 9

10 8

CURRENT SENSOR

NOTE: CONTACTS SHOWN IN DE-ENERGISED STATE

FOR OUTPUT RELAYS

NOTE: TERMINAL 2 MUST BE CONNECTED

TO THE EARTH STUD TERMINAL 7

NOTE: INTERNAL STAYPUT STOP SHOWN CONNECTED

INTO MPC2000+ STOP INPUT

INTERNAL 2 POSITION SWITCH SHOWN CONNECTED

TO LOCAL REMOTE INPUT

INTERNAL STAYPUT STOP

INTERNAL 2 POSTION SWITCH

CONTACTOR A CONTACTOR B

30 31 29 30 31

ESD RELAY

ESD RELAY COIL

[OPTIONAL]

AUXILIARY INPUT L,N,E

SPECIAL

2 RTDs 29

25 30

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