9. Other information
– General
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– WTS-300-E - V4.1 - 20.01.2022
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9.7 Power pack or operation via external power supply
The optional battery pack is essential for full function of the tank mon-
itor of the WTS-300.
Thus, the tank monitor function is guaranteed in the event of a power failure. During
the power failure, the fault code [F30] flashes in the display.
The use of the battery pack must be specified in parameter [A75] = 1. The charge
status of the batteries is monitored (fault F39).
Installation:
Only the suitable original WELBA-power pack may be connected..
Connect the power pack to terminals 21 + 22 (observe polarity)
activate power pack in parameter [A75]
IMPORTANT NOTE
The life of the rechargeable batteries is limited. Those fitted must be replaced by
new ones every two years at the latest.
Only (!) rechargeable batteries of the following specification may be used:
1,2 V NiMh - size AA (min. 2.000 mAh)
The new batteries must always be charged!
DO NOT USE ORDINARY BATTERIES !!!
EXPLOSIVE !!!!!!
Operation via external power supply
In the event of extreme voltage fluctuations in the power supply (or if no 230V power
supply is available), the WTS-300 can also be operated via an external 12 V power
supply. The connection must be made via terminals 21 + 22.
The use of the external power supply must be specified in parameter [A75 = 2].
External
12V power supply
WELBA
Power pack
NOTICE
NOTICE
DANGER!