4. Electrical connection
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– MRF-M2 -E - V0.7 - 23.04.2021
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4.
Electrical connection
4.1 Safety during installation
Before connecting ensure that the mains voltage is the same as
indicated on the device's type plate.
Incorrect electrical connection can cause damage to the regulator and
to the equipment.
The regulator 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
indicated in the technical data should be connected to the relay
contacts.
No other consumers may be connected to the controller's mains
terminals.
4.2 Procedure
In order to avoid injury to persons or damage to connected
components, connections must in all cases be undertaken in the
following order!
Pull out all the
regulator’s plug-in terminals.
Put the controller in position in the housing or switchboard. See section 3.3
De-energize the system.
Connect all components and sensors in accordance with section 4.3 (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 regulator.
Close the switchbox and turn on the mains voltage.
Switch on the regulator and set the parameters
(possibly using the optional WELBA-KONSOFT configuration software).
Plug the pre-cabled plug-in terminals of the components into the regulator.
Close the switchbox.
WARNING
WARNING
