“Extern OFF” connection: Remote deactivation

Remote deactivation of all pumps can be performed using a separate signal transmitter:

• Float switch
• Electrode
• Only Control EC-L1 ... and EC-L2 ...
• Hardware version 2 or higher
• Connection is protected against reverse polarity!

The input acts as a normally closed contact (NC):

• Float switch closed/electrode immersed: Pumps enabled
• Float switch open/electrode not immersed: all pumps deactivated – the display shows the “Extern OFF” symbol.
• If the alarm is activated in menu 5.39, in the “fill” operating mode, an audible alarm sounds in addition to the symbol appearing.

The terminals are fitted with a converter bridge at the factory.

NOTICE! Remote deactivation is prioritised. All pumps are deactivated independently of the level measurement. Manual mode and forced switch-on of the pumps is not possible!

Insert the connection cables laid by the customer through the threaded cable glands and secure. Remove the converter bridge and connect the wires to the terminal strip according to the connection diagram. Use the terminal number shown in the connection overview on the cover.