B&R X20cSC2212 Manual page 11

7.1.1 GND feedback to connection element, no external GND
If the module is used in the following wiring mode, then a loss of GND will not cause any problems because current
is not able to flow via I
OUT
24 V
SELV
GND
Danger!
Other wiring methods
If another wiring method is used, the user must ensure that a safety-critical state cannot occur if there
are 2 external faults (open circuit, etc.). In addition, the current specifications for I
taken into consideration in the event that the GND connection is lost.
Data sheet V1.141 X20(c)SC2212 Translation of the original documentation
or I .
GND
1
Figure 3: GND feedback to connection element
Type B output
Logic
IOUT
Protection
IGND
X20(c)SC2212
Actuator
SOx
GND
and I must be
OUT GND
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