Actuator disconnection with an intrinsically safe shutdown signal (safety barrier)
You can use an intrinsically safe shutdown signal to shut down one or more digital output
modules.
You do this by connecting the voltage of the safety barrier to terminals 4/8 (+) and 12/16 (-) of
the digital output module.
You can also shut down several digital output modules switched in parallel, depending on the
maximum output current at the safety barrier (see the following gure). Remember that current
I
max
= 8 mA for each digital output module.
Shut down "H" output modules:
If no intrinsically safe shutdown signal is applied, the digital output module operates with its
normal functionality.
Shut down "L" output modules:
If no intrinsically safe shutdown signal is used, you must enable the "Disable shutdown signal"
parameter for the shut down "L" output modules.
4BGFUZCBSSJFS
%0
%0
%0
76
0
7
Figure 13-7 Actuator disconnection via intrinsically safe shutdown signal for shut down "H" output
modules and for shut down "L" output modules
Note
You can only use the "Disable shutdown signal" parameter in HW Cong for objects from the
hardware catalog with an "*" after the article number 6ES7...
Actuator shutdown with 11 Vsupply from the WATCHDOG module
Digital electronic modules
13.2 Digital electronics module 4 DO
ET 200iSP
Operating Instructions, 11/2022, A5E00247483-AK 327
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