Lucent Technologies 60V Small Broadband Power System J85500Q-1
Issue 4 October 1998
Alarms, Controls, and Displays 6 - 7
Output Voltage
Adjust
A battery plant voltage control originating in the ACU which
sets the rectifier output voltage to the desired value within the
rectifier operating voltage range.
Overcurrent
Alarm
This red LED lights when a BPS has shutdown due to an
overcurrent condition.
Plant Battery Test
A plant battery test feature is available which allows the user to
test battery health and capacity safely without jeopardizing the
load; i.e., a user-supplied contact closure across TB1-8 and
TB1-9 will reduce the rectifier output voltage set point to
approximately 72 volts which creates a battery on discharge
condition.
If the batteries are present and healthy, the plant voltage will
remain above 72 volts. If the batteries are not present or are not
able to support the load, the plant voltage will immediately drop
to the rectifier set point without any consequence to the load.
If the batteries are present and working, the user may then safely
place the rectifiers in standby by placing a short across TB1-7
and TB1-9 in order to continue the discharge and further
determine the reserve capacity of the batteries.
Power On/
Standby Switch
This two-position switch determines the operational status of the
rectifier.
Probe Fail
This alarm and LED indicate that one of the thermal probes has
shorted or is open.
Rectifier/BPS
Alarms
Whenever the ACU receives a rectifier or BPS alarm, it issues a
Power Major (PMJ) alarm. A red LED lights on the BPS face
plate.
Rectifier Alarm
A signal to the ACU indicating low rectifier output voltage
resulting from a rectifier failure or excess load.
Standby
This yellow LED lights while rectifier is in the Standby mode. In
this mode, the power unit control and alarm circuits are powered;
