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P&B Goldstart MPC2000 Manual

Motor protection controller
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15/05/96
MPC2000
MOTOR PROTECTION CONTROLLER
P&B Engineering
Belle Vue Works
Boundary Street
Manchester
M12 5NG
Tel:
+44 (0) 161 230 6363
Fax:
+44 (0) 161 230 6464
E-mail mail@pbeng.co.uk
0
MPC2000 01/96B

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  • Page 1 MPC2000 MOTOR PROTECTION CONTROLLER P&B Engineering Belle Vue Works Boundary Street Manchester M12 5NG Tel: +44 (0) 161 230 6363 Fax: +44 (0) 161 230 6464 E-mail mail@pbeng.co.uk 15/05/96 MPC2000 01/96B...

  • Page 2: Table Of Contents

    Contents CONTENTS ......................................1 1. INTRODUCTION...................................3 2. SUMMARY OF MPC2000 FEATURES............................4 2.1 C ..................................4 ONTROL UNCTIONS 2.2 P ................................4 ROTECTIVE UNCTIONS 2.3 D ..................................4 ISPLAYED 2.4 F .......................................5 EATURES 3. TECHNICAL SPECIFICATION ..............................5 3.1 T ..................................5 ECHNICAL 3.1.1 A ..............................5 UXILIARY OWER UPPLY 3.1.2 P...
  • Page 3 9.9. MPC2000 D ............................31 AGES UMMARY 10. MPC2000 COMMUNICATIONS ............................32 11. MPC2000 PC SOFTWARE..............................32 11.1 MPCSET S ................................32 OFTWARE 11.2. MPC2000 E PC S ..........................32 NGINEERING OFTWARE 12. MPC2000 FLASH/CONSTANT MESSAGES ........................32 13. MPC2000 INTERNAL TEST ROUTINES..........................33 14.

  • Page 4: Introduction

    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.

  • Page 5: Summary Of Mpc2000 Features

    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 2.2 Protective Functions Voltage Based: 3 Phase Undervoltage Protection 3 Phase Overvoltage...

  • Page 6: Features

    Calculated Data Motor Load - Percentage FLC Thermal Capacity Used Time to Trip Time to Start Unbalance Current Logic Inputs Status Motor Available Indication Individual Status of all Input Contacts Statistical Data Motor Hours Run Number of Motor Starts No of Motor Trips Last Start Time Last Peak Starting Current Fault Data...

  • Page 7: Phase Current Inputs

    3.1.2 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 Amp s 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 3.1.3.

  • Page 8: Current Unbalance Alarm And Trip

    Fault Time Accuracy: +/- 1 second up to 10 seconds +/- 1 second +/- 2% above 10 seconds Threshold Current Level: Overload Setting +/- 1.5% 3.1.7. Current Unbalance Alarm and Trip Method: Unbalance = 100 x (Imax - Imin) / Ir % Where Imax = max.

  • Page 9: Auto Restart Circuitry

    * Current Inputs * Voltage Inputs * Auxiliary Power Supply, with 1000pF Suppression Capacitors removed * Control Terminals, with 1000pF Suppression Capacitors removed. 3.1.11. Auto Restart Circuitry Accuracy: +/- 20% 3.2. MPC2000 IMMUNITY AND EMISSIONS TESTS The MPC2000 was successfully tested at the ERA Technology Centre in Leatherhead on the 7th April 1992 to comply with the European Standards on Emissions (EN50081-1) and Immunity (EN50082-2).
  • Page 10 MPC2000 WIRING DIAGRAM ALTERNATIVE RESIDUAL FAULT CONNECTION STOP B STOP B DIP SWITCH 1 ON = TEST FACILITY AVAILABLE MAIN CONTACTOR STOP A STOP A OFF = EXTERNAL FAULT 3 C 1A C 1A C 1A 84 85 87 88 90 91 CONTROL VOLTAGE...
  • Page 11 MPC2000 PROTECTION ONLY WIRING DIAGRAM ALTERNATIVE RESIDUAL EARTH FAULT CONNECTION FOR INDICATION PURPOSES C 1A C 1A 5A 1A 5A C 1A 110/240V AC 84 85 87 88 90 91 THERMISTOR PT100 OVERLOAD TRIP E/F TRIP [80-265V DC Optional] (0.1K-30K) (100-240 OHMS) 44 45 47 48...

  • Page 12: Mpc2000 Measured Inputs

    5. MPC2000 Measured Inputs 5.1. Power Supply (Live -61, Neutral-62, Earth-63) The MPC2000 requires 240 or 110v A.C. to supply the unit and provides the selected A.C. voltage to all external inputs. The voltage used is set via a switch situated on the rear cover of the unit. The MPC2000 monitors the power supply assumed to be derived from the primary side of the contactor within the starter cubicle or from the MCC busbars to provide an Undervoltage Dip Restart facility.

  • Page 13: Mpc2000 Control Inputs/Outputs

    As an optional extra for the MPC2000 a 5 RTD/Thermistor version is available, with this version 3 channels have common alarm and trip settings and 2 channels have indi vidual alarm and trip settings.. The 2 Channels are always RTD’s but the 3 channels are RTD’s (standard) or Thermistors (Optional) 6.
  • Page 14 PLC/Serial Port (28,5) This contact allows the user when in Remote mode to accept either the direct wired PLC control A and B inputs (30,7 and 31,8) or commands from the RS485 Serial Port for control of the MPC2000. Authorise Key (34,11) When this input is open it prevents unauthorised access to alter the parameter settings of the MPC2000.

  • Page 15: Key Switch

    External Fault 2 (19,42) This inputs allows for tripping or alarming of external protective devices or interlocks. When closed the fault is healthy and when opened a trip and/or alarm occurs depending on the Tripping/Alarm settings. Auto-Reset when enabled, occurs when the input contact closes. External Fault 3 (20,43) This inputs allows for tripping or alarming of external protective devices or interlocks.
  • Page 16 This eliminates the need for additional indication devices on the front of the motor starter panel such as Lamps, Ammeter, Voltmeter, Hours Run Indicator, Operations Counter, etc. which helps reduce the cost of the motor starter panel and gives improved reliability by reduction of separate components. The following section details the function of the Frontplate devices.

  • Page 17: Mpc Functional Keypad & Display

    INTERNAL FAULT This red LED illuminates when an internal fault has been detected by the MPC2000 watchdog feature and remains lit until the fault condition is no longer present and if required by the Alarm/Tripping settings, a reset has been performed. 8.
  • Page 18 Data Page Key This key when pressed enables the operator to select a page of the MPC2000 Displayable Data. For convenience the data are grouped into logical pages. Each time the key titles as follows: Measured Data Calculated Data Logical Inputs - Contacts Status Statistical Data Fault Data Pressing the DATA PAGE key again after the Fault Data title has been displayed will result in the display returning to...

  • Page 19: Mpc2000 Setting And Data

    If the value of a parameter is changed but not stored and the display is scrolled to another page the parameter value will be returned to the value stored in the EEPROM memory. Note: It is possible to adjust and store setting parameters at any time , even whilst the motor is running. Changing the value of a displayed parameter has no effect on the operation of the units until the STORE key is pressed.

  • Page 20: System Settings

    9.2. System Settings Line Voltage This setting range 0-660V in steps of 5v, or 1-22kv in steps of 100v, with default setting of 415v, enables the MPC2000 to display the measured voltages in exact volts. When only a single phase voltage reference is available this setting must be set to root 3 times the system voltage in order for the under and over voltage protective functions to operate correctly.
  • Page 21 Start/Stop Signal This setting, range 'Momentary' or 'Maintained' with a default setting of 'Momentary', determines if the Local Start A and Start B inputs use Momentary or Maintained contacts. In the Maintained mode Hardwired Start, Hardwired Stop and Auto-Restart are disabled. Starting Method Selectable between Direct on Line, Star/Delta, Reversing, Two Speed and Valve Control.

  • Page 22: Voltage Settings

    9.3. Voltage Settings Undervoltage Setting This setting range 50-95% in steps of 1% with default setting of 80% of line voltage determines the pick up level of the Undervoltage protection. When the measured voltages reaches this level for the period equal to the Undervoltage Delay period a trip will be performed, unless the Undervoltage Restart feature is selected.
  • Page 23 Start Inhibit Time This details the time that must elapse before the motor can be restarted after previously exceeding the number of starts set within the start period. This is adjustable between the range of 1 and 60 minutes in steps of 1 minute, with a default setting of 15 minutes.
  • Page 24 Overload Setting Pre-settable overload setting range 60 to 130% in steps of 1% of FLC, with a default and P&B Engineering's recommended setting of 105% of FLC. For further information refer to section 'MPC2000 Thermal Overload Protection' Thermal Capacity Alarm User settable to specify a thermal capacity alarm value between the range of 50 and 99% in steps of 1% of capacity, with a default setting of 80%.
  • Page 25 Current Unbalance Maximum Time This setting specifies the maximum time that the current may be unbalanced before a trip is initiated. The setting is adjustable via the keypad within the range 20 - 120 seconds in steps of 1 second, the default value being 30 seconds. This time delay corresponds to the lowest possible unbalance current setting i.e.

  • Page 26: Temperature Settings

    9.5. Temperature Settings RTD/Thermistor This setting range: 'RTD' or 'Thermistor', with a default setting of 'RTD', determines whether Resistance Temperature Detectors or Thermistors are being used for temperature monitoring. In addition to this setting a change in the setting of an internal group of dip switches is required, refer to notes given in the MPC Measured Inputs section. Thermistor Type This setting, range PTC or NTC is only applicable if Thermistor is set above.
  • Page 27 The option 'Enable' or 'Disable' allows reset of a latched fault by pressing the reset button on the MPC2000 functional keypad, irrespective of the state of the Authorise input. If this feature and the Auto Reset functions are disabled the only way to reset the fault locally is by use of the Reset button when the Authorise input is closed.

  • Page 28: Mpc2000 Data Display

    Pages 9.7. MPC2000 Data Display The following menus can be displayed by the Data Page Key: Measured Data Calculated Data Logical Inputs/Contact Status Statis tical Data Fault Data Each data page provides the following displayed information: Measured Data Option Phase and Line Voltages (+/- 1.0%) Phase Currents (+/- 1.5%)

  • Page 29: Mpc2000 Setting Pages Summary

    Statistical Data Total Run Time [in steps of 1 Hours] Total Number of Starts Total Number of Trips Last Start Time Last Starting Current Fault Data Last Fault and Last Alarm Fault currents, I1, I2, I3 Amps (+/- 1.0%) Earth Fault Current (+/- 1.5%) Fault voltages, V1, V2, V3 Volts (+/- 1.0%)
  • Page 30 COMMUNICATION SETTINGS Drive Number 1 - 320 Baud Rate 110,300,1200,2400,4800,9600 9600 Serial Link No. 1 - 33 Common Address 1 Not Used Not Used Common address 2 Not Used Not used Common address 3 Not used Not used SYSTEM PARAMETER SETTINGS Line Voltage 100v-22kv 415v...
  • Page 31 TEMPERATURE SETTINGS RTD/Thermistor RTD/Thermistor Thermistor Type PTC,NTC Channel 1 Alarm 100-240 or 100-30,000 ohm 100 ohm Channel 2 Alarm 100-240 or 100-30,000 ohm 100 ohm Channel 3 Alarm 100-240 or 100-30,000 ohm 100 ohm Channel 1 Trip 100-240 or 100-30,000 ohm 100 ohm Channel 2 Trip 100-240 or 100-30,000 ohm...

  • Page 32: Mpc2000 Data Pages Summary

    9.9. MPC2000 Data Pages Summary MEASURED DATA (Standard) (Optional) VP1, VP2, VP3 Volts As standard with addition of VL1, VL2, VL3 Volts I1, I2, I3 Amps Total Real Power Watts E/F Current Amps Total VA Power R1, R2, R3 Ohms Power Factor CALCULATED DATA Motor Load...

  • Page 33: Mpc2000 Communications

    10. MPC2000 Communications The MPC2000 in addition to its very comprehensive protection has been equiped with a very powerful data communications system. The relay provides high speed data acquisition to supervisory computers to form a complete motor management system. Each MPC2000 can be connected to an isolated data highway using RS485 communications.

  • Page 34: Mpc2000 Internal Test Routines

    UNABLE TO START CHECK SYSTEM This Flash message is displayed if a Start signal is given to the MPC2000 whilst either the Logic inputs are not in the correct state to accept the particular signal or any signal or when the unit has tripped on a fault which has not been reset. SELF TEST PASSED This Flash message is displayed if the 'Run Self Test' function of the Test/Maintenance Options is successfully performed.

  • Page 35: Mpc2000 Fault Finding

    -ve. 6).Check that the unit passes the 'Self Test Program'. (See instruction manual to operate). •When using the Goldstart MPC2000 with a single phase input; special care needs to be given to the System Parameter Settings to obtain correct results.

  • Page 36: Mpc2000 Thermal Overload Protection

    15. MPC2000 Thermal Overload Protection MPC2000 Thermal Operating Curves The curves shown are the time/current operating characteristics for the MPC2000 Thermal Overload protection. Curve 1 :Cold Curve Overload Setting =105% Curve 2 :Hot Curve Overload Setting =105% Running From 100% FLC Hot/Cold Ratio = 80% Curve 3 : Hot Curve Overload Setting:=105%...
  • Page 37 Providing the motor running current does not exceed the overload setting ( 105% FLC default) the thermal capacity used will never reach 100% and therefore will never trip on overload When the running current exceeds the overload setting the thermal capacity will eventually reach 100% and trip the motor.
  • Page 38 The t6x setting must now be calculated. This is set as the time taken to trip at 6 x FLC for the Cold Starting condition and is set in conjunction with the Hot/Cold Ratio setting. For the above typical motor the Hot Withstand time is 11 seconds, the Cold Withstand is 22 seconds, therefore the Hot/Cold ratio is calculated as 11/22 x 100 = 50%.
  • Page 39 (Running/Pre-load Condition) ( p 2 - (1-H/C)(I L ) 2 ) t c = 32.a.log e -------------------- p 2 - s 2 Where 'I L' is the steady state load prior to overload condition divided by motor FLC, e.g. if motor is running at FLC, I L =1.

  • Page 40: Mpc2000 Installation

    16. MPC2000 Installation 16.1 Casing The MPC2000 is supplied in a totally metal enclosed case suitable for flush mounting on the front of the motor starter cubicle. The following dimensional drawing for the MPC2000 shows the standard Horizontally mounted unit. As an optional extra the MPC2000 is available in a vertically mounted case which has dimensions and cut out exactly the same as for the horizontally mounted version except rotated 90 degrees.

  • Page 41: Mpc2000 Terminations

    16.2. MPC2000 Terminations All terminations to the MPC2000 are situated on the rear plate of the unit. All Power, CT and VT connections are made using M5 screw type terminals suitable for accepting ring type crimps. All control connections are made using Pheonix clamp type terminals grouped in plug in sections to allow pre-wiring to be carried out prior to fitting into the motor starter cubicle.

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