User manual

MANUALS
Technical changes reserved
0141 0316-112 05.2014
Level controller for conducting liquids
WLS-GEH230V
3.1.3 Operating voltage
!
230V AC model: The connection with mains power supply should be
done by only trained and authorised persons. The electrical connec-
tion is done through the 9-pin plug connector as per pin congurati-
on. The device can be operated only with 230V AC supply. The mains
supply connection is protected against over-voltage through a 390V
varistor. The safety of the device against too high load current should
be ensured through an external protection arrangement.
The terminal PE is not connected to the device and is only used to x
or clamp the PE wire. Its wiring is not necessary.
The container with the medium should be grounded by suitable me-
ans to protect against high voltages in case of malfunction.
3.1.4 Load circuit
Pin Function Discription
1 L LIVE (only 230 V model)
2 N NEUTRAL (only 230 V model)
3 PE PE (only 230 V model)
4 REL1 COM Relay 1 common terminal
5 REL1 NO Relay 1 NO contact
6 REL1 NC Relay 1 NC contact
7 REL2 COM Relay 2 common terminal
8 REL2 NO Relay 2 NO contact
9 REL2 NC Relay 2 NC contact
The safety of load circuit, if required, should be taken care of through some external protection arrangement. (max. 5A NO contact, 2A
NC contact). To switch higher currents, corresponding switching elements should be used.
The NO/NC contacts of both the relays are potential free and are terminated at the connection socket. The connection of load is done as
per connector conguration. The NO contact of the relay is provided with a 390V varistor for surge suppression.
B+B Thermo-Technik GmbH | Heinrich-Hertz-Straße 4 | D-78166 Donaueschingen
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