Nortel DMS-100 Series Maintenance Manual page 139

Normal battery rotation mode
During normal battery rotation mode, battery string pairs are rotated from
the load bus to the charge bus. This action occurs for a given time each
week. Battery testing occurs each Sunday. Office parameters in table
OFCSTD control battery rotation and testing.
The following table lists and describes the office parameters of table
OFCSTD that are entered for battery rotation and testing. Refer to the
Translations Guide for additional information on office parameters.
Battery rotation and testing parameters entered in table OFCSTD
Parameter
OPM_CHARGE_START_TIME
OPM_CHARGE_DURATION
OPM_DISCHARGE_TIME
OPM_MIN_CHG_VOLT
OPM_VOLT_TST_OCC
Default
Range value
0 through 23
23
0 through 7
20
0 through –4
4
–400 –420
through
–500
0 through –504
–600
—continued—
DMS-100 Family OPAC Maintenance Manual XPM12 and up
OPAC maintenance overview 2-45
Description
This parameter controls the time of day
the system moves a battery string pair
from the load bus to the charge bus. The
default value of 23 corresponds to 11:00
P.M.
This parameter controls the amount of
time a battery string remains on the
charge bus.
This parameter controls the amount of
time a battery string remains connected to
the discharge bus during the weekly
discharge test. The default value is four,
which corresponds to 1 h.
This parameter controls the minimum
voltage a battery string must be at before
rotation to the charge bus. The default
value is –420, which corresponds to –42.0
V.
This parameter is the value of the voltage
of a battery string compared to the open
circuit test. The default for Yuasa and
Eagle–Picher batteries is –504. This
value corresponds to –50.4 V. If this
parameter is set to 0, the open circuit test
does not occur.