User's Manual

Troubleshooting Nexus FT RMR
4-2 044-05207 Rev A
2 RMR restart CU None Power on start, or user ordered reboot. Logged to indicate a
normal power up, or a restart ordered by the operator
Warning Software error restart, 1st – 7th time. Restart 1st to 7th time during
a 14 day period. The counter is reset every 14th day, counted
from power up
Error Software error restart 8th – 10th time. Restart 8th to 10th time
during the 14 day period. At the 11th time, the SW bank will be
blocked and not used anymore until a user ordered reset is
performed, or power is switched off/on
3Mains
breakdown
External Critical The mains power is gone. Used with an external relay indicating
mains breakdown. The external relay should be connected to
External Alarm 1 and the RMR configured to indicate this alarm. If
no relay is used, a mains breakdown will be reported as a PSM
fault
Ceasing The mains power is back. Sent if there is a corresponding critical
mains breakdown alarm logged in the Events Log. The RMR will
restart when the power is back
4 Alarm reset CU None Alarm reset by the user. All alarms are reset. The cause of the
alarm will be re-evaluated and reported, if still active
5 Local bus
error
WBA #,
MCPA#
Error Error when communicating on the bus. The CU has no contact
with the WBA, or MCPA PCBA, which is taken out of service
6 Main bkd w
backup
External Error Used to indicate that the mains is no longer available. RMR is
powered by external battery backup unit. Suggested remedy:
Check the mains power
Ceasing The cause of the alarm has ceased
7Err in AD-
converter
Warning The analog-to-digital converter on the CU PCBA does not give
reliable values
8 New unit
detected
None Compared to the last power on, the CU has recognized at least
one additional hardware unit
9 Inst. unit lost Error Compared to the last power on, the CU lacks at least one
hardware unit
10 EEPROM
error
CU Error EEP read or write fail. Data cannot be written or read from the
EEPROM on the CU PCBA. User parameters are stored in the
EEPROM
11 Log memory
fault
Error Log memory fault. Indicates that the log memory on the CU PCBA
is faulty. The RMR will not work. Not available in all CU software
versions
12 High temp CU Warning The CU PCBA temperature is higher than 90°C
Ceasing The CU PCBA temperature has fallen below 90°C
13 REFO error Error Significant REFO drift or error detected by CU
14 Ext REFO
error
Warning Suggested remedy: Check the reference source and the cables
Table 4-2 Alarm Troubleshooting (Continued)
ID Alarm Text Alarm Unit Alarm Description