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Amended: Jan 2014
CF1100/1200 CPD PSU
The CPD PSU is now fitted to CF11/12 and CF2000 panels. This PSU is required by the CPR
regulations to monitor the state of the Battery by carrying out a minor discharge every 3 hours to
ensure it will still last for the required standby period, followed by the 30 min alarm period.
Terminals
Normal State
Fault state
NC
Not connected
0v
26v Raw
Any 0v
– 26v Raw Unregulated supply 27.54
0v
26v
Any 0v
– 26v Regulated supply 27.38
0v
Battery Fault
Any 0v and Battery Fault 0.5v
Rises to 5v in Battery fault
Charger Fault
Any 0v and Charger fault 5 v
Falls to 0v in Charger fault
30v
Any 0v and 30v is 5v
Remains at 5v when in fault
Mains Fault
Any 0v and Mains fault 5v
Falls to 0v with mains fail
Battery charge
Across Batt +ve and
–ve approx. 27.4v
