Endress+Hauser Liquiphant FTL31 Operating Instructions Manual page 28

Electrical connection Liquiphant FTL31
 Does the supply voltage match the specifications on the nameplate?
 Do the cables used comply with the requirements?
 Do the mounted cables have adequate strain relief?
 Are the cable glands mounted and firmly tightened?
 Is the wiring correct?
 3-wire DC-PNP: If required, is the functional earth connected?
 2-wire AC/DC: Has the protective ground connection been established?
If supply voltage is present, is the green LED lit?
28 Endress+Hauser