e Trouble-shooting
34
AC and DC-PNP versions with valve plug
Fault
Reason
Green light does
No voltage supply
not light up
Red light flashes
Overload or short-circuit
in the load-current circuit
Internal sensor error or
sensor corroded
AS-interface and DC-PNP versions with M12 x 1 plug
Fault
Reason
Red light lights up
Address 0 set or
(AS-interface)
communication error
Red light lights up
Overload or short-circuit in
(DC-PNP)
the load-current circuit
Green light does
No voltage supply
not light up
Red light flashes (2 Hz)
Internal sensor error or
sensor corroded
Remedy
Check plug, cable and
voltage supply
Rectify short-circuit
Reduce maximum load current to
under 250 mA
Replace device
Remedy
Carry out addressing
Configure slave
If necessary, reduce cable length
(< 100 m total length)
Rectify short-circuit
Reduce maximum load current to
under 250 mA
Check plug, cable and
voltage supply
Replace device