Electrical connection
Liquipoint FTW33
16
Hauser
L–
L+
C/Q1
2
1
3
4
SIO
IO-Link
R1
Q2
A0037916
Pin 1 Supply v
Pin 2 2nd switch output
Pin 3 Supply voltage -
Pin 4 IO-Link communication or 1st switch output (SIO mode)
6.3.1
SIO mode (without IO-Link communication)
Minimum safety
Terminal assignment
MIN output
LED yellow (ye) 1
–
+
2
1
3
4
ye1
+
4
4
+
Maximum safety
Terminal assignment
MAX output
LED yellow (ye) 2
–
+
2
1
3
4
ye2
2
+
+
2
Function monitoring
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 cable
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
MAX output
LED yel-
low (ye)
2
MIN output
LED yel-
low (ye)
1
LED red
(rd)
–
+
2
1
3
4
ye2
ye1
2
+
+
4
