20
8018429/1DWP/V3-0/2022-06| SICK
A D D E N D U M T O O P E R A T I N G I N S T R U C T I O N S | GMS840
Subject to change without notice
3
INSTALLATION
3.7
Intrinsically safe signal connections (option)
3.7.1
Technical design
When the GMS841 (ATEX/ IECEx) is used in Ex zones, the analog outputs, digital inputs and
outputs have to be realized as intrinsically safe signal connections when the signals are
used in an Ex zone.
Additional modules are fitted for this purpose (safety barriers). All intrinsically safe
connections are configured according to customer requirements.
●
Terminal assignment
→
Individual information delivered with the device
●
Technical information on intrinsically safe signal connections and switching, see
delivered Operating Instructions of the safety barriers.
Fig. 6: Safety barriers
Location of safety barriers
Intrinsically safe values,
see “Technical data for intrinsically safe signal connections”,