Operation
61180043L2-5D 9
Battery Charge/Discharge
CAUTION
To prevent battery discharge prior to system operation, do not con-
nect the battery to the PS/BC until the AC power is connected or
imminent.
Each battery has a hardwired 6-foot battery charge/discharge wire that originates at the
battery housing and terminates at a modular connector. The PS/BC has two mating
connector ports each labeled –48V 3A INPUT. It does not matter which battery connects to
which port.
To prevent heat buildup the battery charge current is limited to 1 amp per battery. This elimi-
nates the need for temperature compensation.
Alarm Wiring
The alarm relay output originates at a modular connector with a 6-foot wire stub. Wiring
termination of the output is customer designated. The alarm outputs: AC Fail, Battery Low
Voltage, are assigned the following wire color-codes:
• ACF = orange, orange/white
• BV = blue, blue/white
OPERATION
The PS/BC starts operation when AC or battery power is applied. During operation ambient
temperature can increase up to 50°C without affecting output. If ambient temperature
increases beyond 50°C, output must be derated. At 70°C ambient, output load is limited to 5
amps.
CAUTION
External PS/BC surfaces can become hot during operation above
50°C ambient temperature.
MAINTENANCE
The Total Access PS/BC does not require routine maintenance for normal operation.
ADTRAN does not recommend that repairs be attempted in the field. Repair services may be
obtained by returning the defective unit to ADTRAN. Refer to “Appendix A, Warranty” for
further information.
Fuse
If the fuse fails, replace with a fuse of identical type and rating.