Nortel DMS-100 Series Maintenance Manual page 642

13-40 OPM routine maintenance procedures
Failure of post charge test
OPM
(continued)
Failure of post charge test in an OPM
At the MAP terminal
1
2
3
4
5
6
297-8361-550 Standard 04.01 September 2000
To access the PES MAP display level, type
>MAPCI;MTC;PM;PES
and press the Enter key.
To post the appropriate alarm, type
>POST alarm_state
and press the Enter key.
where
alarm_state
is RED or AMBER
To disable the automatic battery rotation and testing, type
>AUDIT DISABLE
and press the Enter key.
Use the PES117 log to determine which voltage of the battery string tested
below OPM_VOLT_TST_DIS. If strings 1 and 5 are marked failed, determine
if string 1, 5, or both cause the alarm.
Note: OPMs with MTU Default OPM_VOLT_TST_DIS = -495 or -49.5
Vdc for Eagle Picher and Yuasa batteries. OPMs with LTU default
OPM_VOLT_TST_CHG is offset by OPM_VOLT_TST_LTU
ADJUSTMENT (default=10) and truncated. -495+10 = -485 Trunc (-485) =
-480 or -48 Vdc for Eagle Picher and Yuasa batteries.
To place the failed battery string pair on the charge bus, type
>CHARGE n
and press the Enter key.
where
n
is the number of the string pair (0-3)
Note: Leave the string pair on the charge bus for 6 hours or more before
you proceed to step 6.
To open the circuit to the failed battery string pair, type
>OPENCKT n
and press the Enter key.
where
n
is the number of the string pair (0-3)
Note: Leave the string pair in the open-circuit state for 6 hours or more
before you proceed to step 7.