2. CENTUM and Explosion Protection Instrumentation
2-3
TI 33Q01J30-01E
2.3
Overview of Connecting CENTUM to the
Devices Installed in a Hazardous Area
This section describes the overview of connecting CENTUM to the devices installed in a
hazardous area by giving some examples.
Overview of Connecting Ex “ec”/Type “n” compliant FIO Module with
Devices
Ex “ec”/Type “n” compliant module can be connected to the intrinsic safety equipment installed in
Zone 0, Zone 1 and Zone 2 using a barrier and explosion-proof wiring as shown in the following
figures.
They can be connected to Intrinsic safety equipment installed in Zone 0, 1 and 2 using Explosion-
proof wiring that is defined in EN60079-14 and the rules/standards of each country or region.
They can be connected to Ex “ec”/Type “n” equipment installed in Zone 2 using explosion-proof
wiring that is defined in EN 60079-14 and the rules/standards of each country or region.
And they can be connected to flameproof equipment using explosion-proof wiring that is defined
in EN 60079-14 and the rules/standards of each country or region.
Ex “ec”/Type “n” compliant module and FCS or node unit (24 V DC feeding type) can be installed
in Zone 2 by mounting in a keyed metal cabinet with protection rating of IP54 or higher.
Zone1
Zone2
Non-Hazardous Area
Zone0
Node unit
F020303.ai
Safety
Barrier
Safety
Barrier
Safety
Barrier
Flameproof
device
Intrinsic safety
device
Type “n”
Ex "ec" device
Intrinsic safety
device
Intrinsic safety
device
*1
*1
*1
*1
*1
*1:
Explosion-proof wiring that is defined in EN 60079-14 and the rules/standards of each country or region.
Figure Connection of Ex “ec”/Type “n” Compliant Module (1)
Dec .3, 2021-00
