Installation Instruction VARIODYN
®
D1 System
FB 798663.GB0 / 05.19 79
Back-up power supply PSU 24V-2 (Part No. 581722)
and PSU 24V-2 net (Part No. 581724)
The emergency power supply conforms to EN 54-4 and is used in accordance with VDE 0833-4 and EN 50849,
TRVB 158 S for the independent supply of power to the VARIODYN
®
D1 System. In the event of a mains power
failure (230 V AC), the connected batteries will supply the system with power without any interruption.
Fig. 73: Front view Back-up power supply (Part No. 581722 / -24)
Display The main control parameters
Mains fault
Off Normal operation
ON yellow Device switched off or no operating voltage
Battery fault
Off Normal operation
ON yellow Error in one or more batteries
Output
Off Normal operation
ON green Charging
Flashing Fast charge
Fault
Flashing Fault at one of the inputs
ON yellow Common fault
USB port
for service purposes
For detailed information on the emergency power supply, see the manufacturer documentation.
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