
165 of 222 pages
Operating and service manual
910
Main power failure
Log
Description
Main Power Fault
Cause
Indication of insufficient supply voltage
Trouble
shooting
Possible causes:
•
Unstable or insufficient power supply.
Accompanied alarms:
•
N/A.
Trouble shooting:
1) Supply unit with power according to specification.
Criteria
Supply voltage below warning limit
Controller
action
Controller tries safe close-down. If power reappears, system restarts and triggers this
alarm.
Log
X
Alarm
X
Alarm light
Off
Consequence
Elimination
Log data
Parm 1
Parm 2
Parm 3
Parm 4
Parm 5
Active/Inactive
911
Battery voltage LO
Warning
Description
Low Battery Voltage
Cause
Indication of defective battery
Trouble
shooting
Possible causes:
•
Battery too old, defective or used.
•
Battery cables defective.
Accompanied alarms:
•
AL 801 will be activated during FT- or PTI test.
Trouble shooting:
1) Check that connectors/cables for the battery are not damaged. If so replace
the battery.
Criteria
Battery voltage below warning limit for low battery voltage 7 V
Controller
action
None
Log
X
Alarm
X
Alarm light
Off
Consequence
If main power is removed, data logging may not be possible
Elimination
Alarm will be marked as inactive in alarm list when battery voltage reoccurs. Alarm may
then be deleted.
Log data
Parm 1
Parm 2
Parm 3
Parm 4
Parm 5
Active/Inactive Low limit High limit
Actual