UNIPOWER Telecom’s PCM500 Series Control and Monitoring System (PCMS) is a one mounting position high (1.75 inches) basic control and monitoring system for DC power plants. It controls up to 16 rectifiers in up to 4 shelves, precisely setting the float voltage and equalize voltage (optional) on all rectifiers simultaneously. It monitors the battery voltage and current by means of front panel test points or optionally by a front panel digital voltmeter and ammeter.

A front panel yellow LED indicates that the controller is in the optional equalize voltage mode. Front panel red LEDs give the following alarms: rectifier fail alarm-minor, indicating a single rectifier failure; rectifier fail alarm-major, indicating two or more rectifier failures; AC input failure on any rectifier; failure on any fuse or circuit breaker; failure on one or both low voltage disconnects; battery overvoltage; and battery undervoltage. These alarms all have isolated Form C relay contact outputs.

Parameter Name	Parameter Value
Product applications	power plant