4. Electrical connection
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– WTS-300-E - V4.1 - 20.01.2022
4.
Electrical connection
4.1 Safety during installation
Before connecting ensure that the mains voltage is the same as indi-
cated on the device's type plate.
Incorrect electrical connection can cause damage to the regulator and
to the equipment.
The temperature controller should be disconnected from the mains
voltage while connecting plant components or the sensor.
No appliances with current levels in excess of the maximum values in-
dicated in the technical data should be connected to the relay contacts.
No other consumers may be connected to the controller's mains termi-
nals.
4.2 Procedure
In order to avoid injury to persons or damage to connected compo-
nents, connections must in all cases be undertaken in the following or-
der!
Pull out all the controller's plug-in terminals.
Put the controller in position in the housing or switchboard.
Connect all components and sensors in accordance with section 4.4 (Circuit dia-
gram) to the plug-in terminals.
(Do not yet plug the terminals into the controller!)
Connect the mains cable to plug-in terminal A1 / A2.
Plug terminal A1/ A2 into the controller.
Close the switchbox and turn on the mains voltage.
Switch on the controller and set the parameters
(possibly using the optional WELBA-KONSOFT configuration software).
Plug the pre-cabled plug-in terminals of the components into the controller.
Close the switchbox.
WARNING
WARNING