The battery test procedure uses a special algorithm to prevent deep discharge and increase battery
endurance. A dynamic battery test is performed every ten minutes when mains power is present, and a battery
condition alarm will be generated if the battery is either disconnected or shows poor capacity. Battery fault
conditions will activate the battery trouble input associated with the address assigned to the power supply.
In addition to the dynamic battery test procedure, the power supply performs a battery presence test every 60
seconds, which determines whether the presence of a backup battery is detected. Similarly, if no backup
battery is detected a battery condition alarm will be generated and the battery trouble input associated with
the address assigned to the power supply will also be activated.
To comply with EN 50131-1 only one battery can be connected and monitored per system. If more capacity is
required a single larger battery must be used.
Backup Battery Thresholds
The battery disconnection threshold is 8V. Upon reconnection of mains power the power supply automatically
detects the backup battery and begins controlled charging at 500mA (typical).
PRT-PSU-DIN-4A | Protege DIN Rail 4A Intelligent Power Supply | Installation Manual
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