CVR, 24V Standard (42706001)

CVR, 24V Standard (42706001)

Control Voltage Relay

CVR modules provide automatic, independent monitoring of battery/DC low or high voltage, with two relay outputs for activation of alarm or protection systems.
The CVR monitors its own battery/DC supply, with only minimal internal power drain.
The Low Voltage relay is energised during healthy battery conditions. If the measured battery/DC voltage falls below the low voltage level, and remains there for the preset delay time, the low volts relay de-energises. The delay time prevents relay de-energisation during normal, temporary battery loading, e.g. during standby engine cranking. If the voltage returns above the low voltage level, the delay timer resets and the relay stays/becomes energised.
The High Voltage relay is de-energised during healthy battery/DC conditions. If the measured voltage rises above the preset high voltage level, the high volts relay immediately energises. The relay immediately de-energizes again if the battery/DC voltage returns below the high volts level.

Factory set low/high voltages and delays are:
Low Volts: (V DC) 22.0 , (secs)  120
High Volts: (V DC) 29.0

Literature:

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