Safety 2
enCore FC1
Operating Instructions
Page 13 of 78
2 Safety
2.1 General
Safety
Instructions
WARNING
Risk of explosion
A risk of explosion exists if the FC1 is improperly installed
and connected!
The FC1 must be installed outside of ex-zones 0, 1 and 2.
The FC1 can be equipped with hardware modules that are
approved as
associated electrical apparatus
of category
ib
with intrinsically safe electrical circuits according to
EN 60079-11 (i.e. input boards with the designation ExMFE5).
The FC1 is therefore suitable for being connected to
transmitters, pulse and signal generators that are located in
hazardous areas (e.g. zone 1). A mixed connection of
intrinsically safe and non-intrinsically safe circuits to these
hardware modules is not permitted.
Only intrinsically safe protection class [EEx ib] II C
temperature and pressure transmitters must be connected to
the respective ExMFE5 connection terminals.
Only pulse transmitters of protection class [EEx ib] II C must
be connected to the respective ExMFE5 connection terminals.
All signals from the potentially explosive area (zone 0, zone 1,
zone 2) that are connected to hardware modules other than
ExMFE5 must be blocked off by means of appropriate ex-
isolators.
The regulations in the relevant standards, especially
EN 60079-0, EN 60079-11, EN 60079-17 and EN 60079-25,
must be obeyed unconditionally.
