Post-Connection Check - Endress+Hauser Liquiphant FTL31 IO-Link Operating Instructions Manual

Electrical connection
Maximum safety
Terminal assignment
2 1
3 4
K1
L–
Function monitoring with M12 plug
When both outputs are connected, the MIN and MAX outputs assume opposite states (XOR)
when the device is operating fault-free. In the event of an alarm condition or a line break,
both outputs are de-energized. This means that function monitoring is possible in addition to
level monitoring. The behavior of the switch outputs can be configured via IO-Link.
Connection for function monitoring using XOR operation
Terminal assignment
2 1
3 4
0.5A
K1 K2
L– L+
6.4

Post-connection check

Are the device and cable undamaged (visual inspection)?
Does the supply voltage match the specifications on the nameplate?
If supply voltage is present, is the green LED lit?
With IO-Link communication: is the green LED flashing?
20
0.5A
L+
MAX output
ye2
+ 2
+ 2
+ 2
MAX output
+
+
LED yellow
MIN output
(ye) 2
A0037918
Liquiphant FTL31 IO-Link
LED yellow (ye) 2
ye2
2
2
LED
yellow
(ye) 1
ye1
A0037919
+ 4
+ 4
+ 4
Endress+Hauser
A0037918
LED red
(rd)