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Issue 2 22/4/98

MPC2000D

Motor Protection Controller

P&B Engineering
Belle Vue Works
Boundary Street
Manchester
M12 5NG

Tel: 0161 230 6363
Fax: 0161 230 6464

E-mail [email protected]

Summary of Contents for MPC2000D

Page 1: ...Issue 2 22 4 98 MPC2000D Motor Protection Controller P B Engineering Belle Vue Works Boundary Street Manchester M12 5NG Tel 0161 230 6363 Fax 0161 230 6464 E mail mail pbeng co uk...

Page 2: ...6 4 MPC2000D SCHEMATIC DIAGRAMS 6 5 MPC2000D MEASURED INPUTS 9 5 1 POWER SUPPLY LIVE 1 NEUTRAL 2 EARTH CASE 9 5 2 VT INPUTS L1 13 L2 14 L3 15 N 16 IF USED 9 5 3 CT PHASE INPUTS 21 22 23 24 25 26 9 5...

Page 3: ...0D INTERNAL TEST ROUTINES 32 14 MPC2000D FAULT FINDING 33 15 MPC2000D THERMAL OVERLOAD PROTECTION 34 16 MPC2000D INSTALLATION 38 16 1 CASING 38 16 2 MPC2000D TERMINATIONS 39 17 FAST SCAN ANALOGUE DATA...

Page 4: ...he 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 MPC2000D During operational condit...

Page 5: ...ent 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 P...

Page 6: ...rents 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 Functional Keypad enables settings to be made i...

Page 7: ...mary 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 3 1 3 Earth Fault Current Inputs Method True RMS...

Page 8: ...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...

Page 9: ...rotection Only device The following points should be noted Although not shown on the diagrams it is recommended that the 3 phase input voltage should be fused after the take off point from the system...

Page 10: ...OP NC ALTERNATIVE RESIDUAL FAULT CONNECTION EXTERNAL FAULT 3 EXTERNAL FAULT 2 OR SYSTEM TEST SET BY DIP SWITCH 1 DIP SWITCH 1 ON TEST FACILITY AVAILABLE OFF EXTERNAL FAULT 3 CONTACTOR B CONTACTOR A ST...

Page 11: ...STOP NC AUX 2 RELAY TRIP AUX 1 RELAY ALARM CONTACT SHOWN IN DE ENERGISED STATE THERMISTOR PT100 OVERLOAD TRIP E F TRIP GND LOGIC SUPPLY ALT AUX POWER SUPPLY AUX SUPPLY INTERNAL POWER SUPPLY ON ALTERNA...

Page 12: ...the Phase Sequence and Phase Loss protective functions must be disabled 5 3 CT Phase Inputs 21 22 23 24 25 26 The MPC2000D can be supplied for use with either 5A or 1A CT secondaries To be specified...

Page 13: ...inputs is commoned to enable simplified wiring to the unit however it should be noted that the common terminals are always live when power is connected to the MPC2000D and the should always be isolate...

Page 14: ...ovided Remote mode is selected via the Local Remote input and PLC mode is selected via the PLC Serial Port input The motor will continue running provided the input remains closed Opening of the input...

Page 15: ...aving the factory The default setting is for this input is External Fault 3 If this option is selected a facility is provided to carry out function and protection testing on the motor starter provided...

Page 16: ...A B inputs indicate a open state and also when a Stop or Fault signal is present STARTING This amber LED is illuminated when a Start command is received and remains illuminated providing either Contac...

Page 17: ...unction of each key Liquid Crystal Display The MPC2000D has been equipped with a 2 line 16 character per line liquid crystal display The display is used for the following functions Viewing and Changin...

Page 18: ...every time the key is pressed unless the key is held down for half a second in which case the rate of change will increase If the Authorise input is open and the key is pressed the flash message Unaut...

Page 19: ...pressed and the Authorised input is closed a flash message RESET THERMAL CAPACITY is displayed and if the RESET button is pressed again whilst the message is displayed the level of Thermal Capacity w...

Page 20: ...s above 660V where the voltage reference to the MPC2000D must be via a voltage transformer and the VT secondary voltage is set with this function Motor Full Load Current Range 1 2500 Amps in steps of...

Page 21: ...o Delta at a percentage of FLC For further details see section 18 Max Time In Star This setting with a range 1 to 60 Sec in steps of 1 determines the maximum time that the relay can be in Star when st...

Page 22: ...ip relay The External Fault 2 3 inputs can still be used as before 9 3 Voltage Settings Undervoltage Setting This setting range 50 95 in steps of 1 with default setting of 80 of line voltage determine...

Page 23: ...t 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...

Page 24: ...range of 50 and 99 in steps of 1 of capacity with a default setting of 80 t6x Time This setting specifies the time the MPC2000D will take to trip at 6 times FLC and determine the basic thermal charact...

Page 25: ...y 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...

Page 26: ...ermistors are selected and range 100 240 ohms if RTD is selected determines the resistance level at which an trip will occur Channel 2 Trip This setting range 100 30 000 Ohms if Thermistors are select...

Page 27: ...ines whether operation of the protective function causes a trip to the motor or not This can be applied to an alarm such that an alarm can be made to give a trip Alarm The option Enable or Disable det...

Page 28: ...D D D E E Thermal Pre Alarm D E D E E Thermal Trip E E D E E Unbalance Alarm D E D E E Unbalance Trip E E D E E Undervoltage Trip D E D E E Overvoltage Pre Alarm D E D E E Overvoltage Trip E E D E E...

Page 29: ...otal VA Power Channel Resistance 3 0 Power Factor Calculated Data Motor Load as a of FLC 1 0 Thermal Capacity as a of FLC 1 5 Time to Trip in Minutes and Seconds 2 0 Time to Start in Minutes and Secon...

Page 30: ...ult and Last Alarm Fault currents I1 I2 I3 Amps 1 0 Earth Fault Current 1 5 Fault voltages V1 V2 V3 Volts 1 0 9 8 MPC2000D Setting Pages Summary The following pages show a summary all of the MPC2000D...

Page 31: ...lay 0 120 Sec 0 Designate Aux 2 Trip Trip Fail Safe Contactor A Trip Contactor B Aux 2 Delay 0 120 Sec 0 Protection Only Yes No No VOLTAGE SETTINGS Undervoltage Setting 50 95 80 Undervoltage Delay 0 2...

Page 32: ...rent E E D E E High Set Overcurrent D D D E E Thermal Pre Alarm D E D E E Thermal Trip E E D E E Unbalance Alarm D E D E E Unbalance Trip E E D E E Undervoltage Trip D E D E E Overvoltage Pre Alarm D...

Page 33: ...locked out closed run enable Isolator Start A Input Open Closed Start B Input Stop Input Local Remote Input Closed remote open local PLC Serial Port Input Open PLC closed S Port PLC Control A Open sto...

Page 34: ...ontroller is based on the P CIM Process Monitoring Control software package For further information on the MPC2000D Engineering PC Software phone us for our booklet at Manchester 0161 230 6363 12 MPC2...

Page 35: ...ies which Fault has operated and is displayed when the Fault LED is illuminated 13 MPC2000D Internal Test Routines In addition to conventional hardware and software watchdog routines the MPC2000D has...

Page 36: ...r is closed 4 Check Stop Button is in correct position 5 Check that Protection Only Mode is correctly selected 6 If in Remote check correct selection of data transfer i e PLC or Serial Port If the uni...

Page 37: ...owed and is the level at which an overload trip will occur When the motor is stopped for a long period of time the thermal capacity used is zero this is known as the cold condition and the motor has 1...

Page 38: ...and 15 times the heating factor The higher the value of this setting the longer it will take for the thermal capacity to reduce to the 50 level required to enable a restart The MPC2000D calculates the...

Page 39: ...tion 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 calcula...

Page 40: ...oad setting in per unit value e g 105 a is setting of t6x in seconds tc is the operating time in seconds Running Pre load Condition tc 32 a loge p2 1 H C IL 2 p2 s2 Where IL is the steady state load p...

Page 41: ...he motor starter or circuit breaker cubicles Clearance 25 min 166 25 40 155 5 PUSH BUTTON PROJECTION 10mm 208 178 5 96 45 10 102 NOT SHOWN TO SCALE 45 178 Required to open case 96 M4 STUDS 23 PANEL CU...

Page 42: ...4mm screws Blade Each connection facilitates 2 pre insulated push on blades 4 8mm wide 0 8mm thick complying with BS5057 Combinations Each terminal will accept either 2 ring type connectors or 2 push...

Page 43: ...e Status 41 Pre trip I0 11 Trips 42 Pre trip VP1 12 Alarms 43 Pre trip VP2 13 Time to trip 44 Pre trip VP3 14 Time to start 45 Last start period 15 Average RMS current 46 Last start peak current 16 Mo...

Page 44: ...ays Contactor A and B To start the motor in the forward direction press the Start A button To start the motor in the reverse direction press the Start B button The Stop button stops the motor in whate...

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