Lucent Technologies -48V CPS4000/CPS4000 PLUS Cabinet Power System
2 - 6 Product Description
Issue 13 December 2000
Control Units
Overview
Included in single-shelf plants or in the initial shelf of two-shelf plants
is either:
These units provide plant monitoring and control features as well as
office alarm outputs from rectifiers.
ES647 Alarm
Control Unit
Alarms only are provided for converters or ringers in combination plants
or for converters in converter plants. The ES647 Alarm Control Unit
(ACU) offers a reduced feature set, providing an economical alternative
to the Monitor and Control Units.
Alarm Control Unit features are listed below:
•
Capability for a customer-provided Plant Battery Test (PBT), which
sets the rectifier output voltage to approximately -48V for battery
testing, allowing the batteries to be discharged without affecting
plant load
•
Green, yellow, and red LEDs that display plant status
•
Form-C office alarms corresponding to the alarm indicators
•
Customer-accessible encoder or potentiometer to adjust the plant
voltage
•
Alarm monitor circuit that determines the status of the installed
rectifiers, converters, or ringers and incorporates this information
into the plant power minor or power major alarms
•
Capability of remote On/Standby control that is “passed-on” to
installed power modules
a Monitor and
Control Unit
(ES646, ES646B,
ES648A, ES648B,
ES648C, or
ES648BZ)
or
an Alarm
Control Unit
(ES647)
Voltage
Current
Normal
V
AC
Fail
PMN
MJF
PMJ
V Adj
BD
LED
Test
+
-
MCU
Normal
V
PMN
PMJ
V Adj
+
-
ACU
