Lucent Technologies -48V CPS4000/CPS4000 PLUS Cabinet Power System
Appendix C - 4 Glossary
Issue 13 December 2000
LVD
Low-voltage disconnect; preset voltage threshold at which the load is
disconnected from the battery voltage in CPS Plants to protect both the
batteries and the using equipment.
Major Fuse Alarm
(MJF)
This red PMJ LED lights to signify that an output distribution circuit
breaker or fuse has operated due to excessive current. A circuit breaker
in either the off or trip position results in an alarm condition.
MCU
Monitor and Control Units (ES646, ES646B, ES648A, ES648B,
ES648C, and ES648BZ); provide plant monitoring, display and control
features, and office alarm outputs
NAFTA
North American Free Trade Association
NEC
National Electric Code
Normal
This green LED lights while there are no alarms and the plant is
operating normally and is able to furnish power to the load.
Output Voltage
Adjust
A plant voltage control originating in the control unit that sets the
rectifier output voltage to the desired value within the rectifier operating
voltage range.
Power Major
Alarm (PMJ)
Conditions that impact service and require immediate attention are
classified as major alarms and designated as Power Major (PMJ) alarms.
(Red LEDs signify major alarms.)
Power Minor
Alarm (PMN)
Conditions requiring service, but having no immediate impact on the
plant output are classified as minor alarms and designated as Power
Minor (PMN) alarms. (Yellow LEDs signify minor alarms.)
Power On/Standby
Switch
This two-position switch determines the operational status of the
rectifier.
Rectifier Alarm
A signal to the control unit indicating low rectifier output voltage
resulting from a rectifier failure or excess load