AC and DC-PNP versions with valve plug
Fault
Reason
Green light
No voltage supply
does not light up
Red light flashes
Overload or short-circuit in the load-current
circuit
Internal sensor error or sensor corroded
AS-i and DC-PNP versions with M12x1 plug
Fault
Reason
Red light lights up
Address 0 set or communication error
(AS-i)
Red light lights up
Overload or short-circuit in the load-current
(DC-PNP)
circuit
Green light
No voltage supply
does not light up
Red light flashes
Internal sensor error or sensor corroded
(2 Hz)
Endress+Hauser
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
en - Trouble-shooting
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