Prm Circuit Faults - SKF Multilog On-Line System IMx-M User Manual

PRM Circuit Faults

If any bit representation of PRM circuit faults is not 0x0000, then the PRM circuit fault
relay will be triggered and the PRM circuit fault LED will be ON indicating a circuit fault.

For PRM master bit representations, refer to the table "Protection Module Circuit
Faults - PRM-Master", below to decode circuit fault condition(s).

For PRM slaves 0 to 7 bit representations, refer to the table "Protection Module
Circuit Faults - PRM-S0 to PRM-S7", below to decode circuit fault condition(s).
Table 2-8: Protection module circuit faults - PRM-M.
Protection Module Circuit Faults - PRM-Master
1
Bit representation Condition
CF_STATUS_OK
(0x0000)
(No bit set)
CF_CONFIG
0x0001
CF_RS485INT
0x0002
CF_CFG_MISMATCH
0x0004
CF_SELFTEST
0x0008
CF_DOWNLOAD
0x0010
CF_MODBUS
0x0020
CF_4-20MA
0x0040
CF_SPI
0x0080
CF_24VA
0x0100
CF_24VB
0x0200
CF_CALIB2
0x0400
SKF Multilog On-Line System IMx-M
User Manual
Comments
Normal. No errors.
User configuration dependent:
Check IMx-M configuration settings.
Check the PRM position.
Internal RS485 communication error - check that modules
are firmly positioned:
Master and slave may have different FW versions in use -
check the current FW version in use (intd0) on both master
and slave.
Also check the FW version of CMM.
Configuration mismatch detected:
See "Protection Configuration
Check for self test errors during startup.
Download mode.
Check RS485 L1–L2.
Check 4-20 mA outputs.
Check that CMM/PRM is firmly positioned
Check that CMM/PRM is firmly positioned
PSU 1 voltage failure:
User configuration dependent.
Check IMx-M configuration settings.
Check that PSU 1 is firmly positioned.
PSU 2 voltage failure:
User configuration dependent.
Check IMx-M configuration settings.
Check that PSU 2 is firmly positioned.
Calibration table error:
Protection
Protection Part Operation
Update" chapter.
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