
Protection
Protection Part Operation
2 - 38
SKF Multilog O
n-Line System IMx-M
User Manual
RLM Circuit Faults
If any bit representation of RLM 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 RELM (relay master) bit representations, refer to the table Relay Module Circuit
Faults - RELM (Relay Master), below to detect circuit fault condition(s).
•
For RELS0 to RELS7 (relay slaves 0 to 7) bit representations, refer to the table
Relay Module Circuit Faults - RELS0 to RELS7 (Relay Slaves 0 to 7), below to
detect circuit fault condition(s).
Table 2-13: Relay module circuit faults – RELM.
Relay Module Circuit Faults - RELM (Relay Master)
Bit representation* Condition
Comments
(0x0000)
(No bit set)
CF_STATUS_OK
Normal. No errors.
0x0001
CF_CONFIG
User configuration dependent:
Check IMx-M configuration settings.
Check the PRM position.
0x0002
CF_RS485INT
Internal RS485 communication error:
Check modules are firmly positioned.
Master and slave may have different firmware
version in use - check the current firmware version
in use (intd0) on both master and slave.
0x0004
CF_CFG_MISMATCH
Configuration mismatch detected:
See "Protection Configuration Update" chapter.
0x0008
CF_SELFTEST
Check for self test errors during startup.
0x0010
CF_DOWNLOAD
Download mode.
0x0020
CF_24VA
PSU 1 voltage failure:
User configuration dependent.
Check IMx-M configuration settings.
Check PSU 1 is firmly positioned.
0x0040
CF_24VB
PSU 2 voltage failure:
User configuration dependent.
Check IMx-M configuration settings.
Check PSU 2 is firmly positioned
0x0080
CF_5V1
Internal 5 V error:
Contact SKF support
0x0100
CF_5V2
Internal 5 V error:
Contact SKF support
0x0200
CF_TEMP
Internal temperature high/alert.