Operating instructions
VEK M2E-2
FEIG ELECTRONIC GmbH
03/06
9
3. Outputs and LED-display
3.1. Working principle of the relays
The detector has a potential-free relay contact at each output. The static current- or
operating current principle may be selected for each channel with the help of a slide switch.
Switch
Position
Working principle
1
2
right
Static current principle
(Relay coil falls off during signal output)
1
2
left
Operating current principle
(Relay coil attracts during signal output)
3.2. Contact conditions of the relays
(For device categories, please refer to chapter 8)
The following chart illustrates the relay’s condition depending on the selected relay working
principle and the detector condition.
Detector condition
Loop is free
Loop is occupied
Loop failure
Reset
Voltage off
3.3. Loop failure
In case of a loop failure, the relay of the disturbed channel changes into the „loop is
occupied“ condition. The green LED goes out. The red LED lights up.
After the fault has been eliminated, the detector channel keeps on working independently.
The green LED pulsates now, in order to hint to the fault which has occurred and already
been eliminated. This fault indicator is restored by pressing the reset key.
