Endress+Hauser Liquiphant FTL31 Operating Instructions Manual page 30

Commissioning
Function Description
LED red (rd) Warning/maintenance required: error can be rectified, e.g. incorrect wiring; protective function if
Flashing test magnet is held against the sensor for longer than 30 s
LED red (rd)
Fault/device failure: error cannot be rectified, e.g. electronic error
Lit
On the metal housing cover (IP69), there is no external signaling via LEDs.
Description of M12 plug with LED display (optional)
• LED gn: is lit when the supply voltage is applied
• LED ye 1: is lit when the sensor is covered
• LED ye 2: is lit when the sensor is not covered
The connecting cable with an M12 plug and LED display can be optionally ordered as an
accessory. See the "Accessories" section
30
gn
ye 1
ye 2
40
³
(1.57)
Liquiphant FTL31
A0020871
Endress+Hauser