Installation Instruction VARIODYN
®
D1 System
76 FB 798663.GB0 / 05.19
Back-up power supply (Part No. 581721)
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. 70: Front view Back-up power supply (Part No. 581721)
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
ON green Normal operation
Off Back-up power supply output is faulty
For detailed information on the emergency power supply, see the manufacturer documentation.
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