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Operation Instructions
MBE35_50 OPERATION MANUAL 2005_10
22
8 OFF
Relay K4: In this position relay K4 has an error indication
function. It is active when following occurs:
1. The arm needed too long to go up or down.
2. The controller is waiting for a manual or signal
reset.
3. Input IN 4 was activated (contact open) for longer
than 3 minutes (In case the photo sensor is dirty
or damaged)
4. Input IN5 was activated (contact open) for longer
than 3 minutes (loop or loop detector failure).
5. Power failure 24VDC or 5VDC
8 ON
Relay K4: same function as K3 in combination with
DIPswitch 7 in on position. This is in case that a warning
sign and a traffic light are installed.