Lucent Technologies 60V Small Broadband Power System J85500Q-1
Issue 4 October 1998
Alarms, Controls, and Displays 6 - 4
•
BPS current limit
Power Alarms
One or more of the alarm conditions listed below results in a
power major alarm transmitted via the office alarm connector
and causes a red LED labeled PMJ on the ACU to light. The
following table lists the reason for the power major alarm
transmitted as well as the device where the red LED is displayed.
Office Alarm
Contacts
A set of Form-C contacts is brought out on TB1 for each of the
following plant alarms:
•
Power Major (PMJ)
•
AC Fail (ACF)
Each set of isolated contacts consists of a combination of
normally open (NO) and normally closed (NC) contacts with
one side of each common (C). When an alarm condition exists,
a closure exists between the NC and C poles and an open exists
between the NO and C poles. Table 6-B gives the office alarm
pin assignments on TB1.
Table 6-A: Plant Alarm Conditions and Indications
Alarm Condition
Office Alarm
(Contact
Closure)
Rectifier
ES664 (LED)
ACU/EBM1
(LED)
BPS
ES635
BPS Alarm
PMJ
PMJ
Alarm
Rectifier Standby
PMJ
Stby
PMJ
Rectifier Alarm
PMJ
Alarm
PMJ
AC Fail
PMJ/ACF
PMJ/ACF
Excess Battery Temp.
Temp Comp
High Battery Temp.
PMJ
PMJ/High
Battery Temp
Battery String
Connection
PMJ
PMJ
Battery
Connect
Battery on Discharge
PMJ
PMJ/BD
Probe Fail/Open
PMJ
PMJ/Probe Fail
Major Fuse Alarm
(MJF)
PMJ
PMJ/MJF
Current Limit
PMJ
PMJ
Current Limit
