REMKO WLT EC Series Operating And Installation Instructions page 40

REMKO WLT EC series
Alarm contact for general alarm signal
The unit is equipped with a general alarm signal
contact that can be used to signal a malfunction to
an external location. If a unit malfunction is present
on the unit, the potential-free contact is closed.
This contact can be connected with 230 V.
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Group control/MODBUS control
If, for example, multiple units are to be controlled
via a single cabled remote control, connect the
WLT EC units with each other. For this purpose,
connect contacts A and B of the individual units
with each other. It is also possible to implement
control via a Modbus interface with these contacts.
The corresponding data protocol is available as a
separate document.
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MODBUS