Burkert SideControl BASIC Quick Start Manual page 30

10.3.2 3 conductor or 4 conductor connection
type
Configuration with communication software
4 conductor connection type (factory setting)
The setpoint input is designed as a differential input, i.e. the
GND lines of the setpoint input and the supply voltage are not
identical.
Note: if the GND signals of the setpoint input and the supply
voltage are connected, the 3 conductor connection type must
be set in the software.
+
"11+"
Pin 1
0/4...20 mA
"12-"
I
Pin 2
GND
"GND"
Pin 3
+24 V DC
+
"+24 V"
U
Pin 4
Tab. 15: 4 conductor connection type with terminal designation or PIN of
M12 8-pin circular plug-in connector
30
3 conductor connection type
The setpoint input is linked to the GND line of the supply
voltage, i.e. setpoint input and supply voltage share a GND
line.
U
Tab. 16: 3 conductor connection type with terminal designation or PIN
of M12 8-pin circular plug-in connector
english
Type 8791 REV.2
Electrical connection
+
"11+"
Pin 1
0/4...20 mA
I
GND
"GND"
Pin 3
+24 V DC
+
"+24 V"
Pin 4