Woodward
Manual MRM3-2 GB
4
TD_MRM3-2_09.08_GB_Rev.New
5.5.7
Start-up recognition time or Motor Running time ......................................................... 28
5.5.8
Stopping time ............................................................................................................... 28
5.6
Interface Parameters ....................................................................................................... 28
5.6.1
Adjustment of the Slave-Address (RS) ........................................................................ 28
5.6.2
Adjustment of the Baud-Rate (only for Modbus Protocol) ........................................... 28
5.6.3
Adjustment of the Parity (only for Modbus-Protocol) ................................................... 28
5.7
Recorder (FR).................................................................................................................. 29
5.7.1
Fault Recorder or Disturbance Recorder ..................................................................... 29
5.7.2
Number of Fault Recordings ........................................................................................ 30
5.7.3
Adjustment of the Trigger Event .................................................................................. 30
5.7.4
Pre-Trigger Time (T
vor
) ................................................................................................. 30
5.8
Setting of the Clock ......................................................................................................... 31
5.9
Additional Functions ........................................................................................................ 32
5.9.1
Blocking of the Protective Functions............................................................................ 32
5.9.2
Allocation of the Reset Functions ................................................................................ 33
5.9.3
Allocation of the Output Relays ................................................................................... 34
5.10
Measuring Value and Fault Indications ........................................................................... 36
5.10.1
Measuring Value Indications ................................................................................... 36
5.10.2
Units of the Displayed Measuring Values ................................................................ 36
5.10.3
Indication of the Fault Data ...................................................................................... 36
5.10.4
Fault Memory ........................................................................................................... 37
5.11
Reset ............................................................................................................................... 38
5.11.1
Erasure of the Fault Memory ................................................................................... 38
5.11.2
Reset of the Thermal Memory ................................................................................. 38
5.12
Digital Inputs .................................................................................................................... 39
5.12.1
Parameter Set Changeover Switch ......................................................................... 39
5.12.2
External Trigger of the Fault Recorder .................................................................... 39
5.12.3
Recognition of “Motor Running” Condition ............................................................... 39
5.12.4
Undelayed External Trip .......................................................................................... 39
5.12.5
Delayed External Trip .............................................................................................. 39
6.
Notes on Relay Tests and Commissioning .............................................. 40
6.1
Connection of the auxiliary voltage .................................................................................. 40
6.2
Testing of Output Relays and LEDs ................................................................................ 40
6.3
Test circuit for MRM3-2 ................................................................................................... 41
6.3.1
Checking of Input Circuits and of the Measuring Values ............................................. 41
6.3.2
Testing the START-STOP-RUNNING Recognition ..................................................... 41
6.3.3
Testing the Pick-Up and Disengaging Values ............................................................. 42
6.3.4
Testing the maximum starting time .............................................................................. 42
6.3.5
Testing the thermal image ........................................................................................... 42
6.3.6
Testing the Control Inputs ........................................................................................... 42
6.3.7
Testing the CB Failure Protection ................................................................................ 42
6.4
Primary Test .................................................................................................................... 43
6.5
Maintenance .................................................................................................................... 43
7.
Technical Data ............................................................................................ 44
7.1
Measuring input ............................................................................................................... 44
7.2
Common data .................................................................................................................. 44
7.3
Setting ranges and steps ................................................................................................. 45
7.3.1
System parameter ....................................................................................................... 45
7.3.2
Time over current protection ........................................................................................ 46
7.3.3
Load Unbalance Protection ......................................................................................... 48
7.3.4
Earth fault protection ................................................................................................... 49
7.3.5
Circuit breaker failure protection .................................................................................. 50
7.3.6
External trip delay ........................................................................................................ 50
7.3.7
Trip blocking beginning with the adjusted rated current .............................................. 50
7.3.8
Start parameter ............................................................................................................ 51
7.3.9
Interface parameter ..................................................................................................... 52
7.3.10
Fault recorder parameter ......................................................................................... 52
7.4
Tripping characteristics .................................................................................................... 53
7.4.1
Tripping characteristic for max. starting time ............................................................... 53
7.4.2
Thermal image ............................................................................................................. 54
