Safety Instructions - Endress+Hauser Commubox FXA 195 Mise En Service

XA 336F-A
Explosion-hazardous area Zone 1

Safety Instructions

1.) Install in accordance with the manufacturer's specifications and the applicable standards and regulations.
2.) The Commubox FXA 195 is associated electrical apparatus and thus may be installed outside of the explosion-hazardous
area only.
3.) The intrinsically safe output circuits of the Commubox FXA 195 may be routed into Zone 0 and Zone 20.
4.) The Commubox FXA 195 must be installed such that the terminals of the external intrinsically safe circuits are at
least 50 mm away from the terminals or bare wires of the non-intrinsically safe circuits.
5.) The Commubox FXA 195 must be installed such that the bare components of the intrinsically safe circuit are separated
from metallic housing components by an air gap of at least 3 mm, and from bare components of non-intrinsically safe
circuits by an air gap of 6 mm.
6.) The intrinsically safe circuit is safely, galvanically separated from all other circuits of the FXA 195 up to a peak voltage
of 375 V.
7.) If the intrinsically safe circuit that can be connected to the Commubox FXA 195 is routed into explosion-hazardous areas Zone
20 or 21, then it must be ensured that all devices connected to it fulfil the requirements of Category 1D or 2D, and are corre-
spondingly certified.
FXA 195-
Power supply circuit
Communication circuit
Ambient temperature
XA 336F-A/00/en/04.05
52027293
FM+SGML 6.0
Zone 21
4...20 mA
[EEx ia] IIC
[EEx ia] IIC
Sensor
Zone 0
Zone 20
max. voltage
HART resistor
Non-hazardous area
EX EX
+
USB
Commubox
for active device:
separate power supply
II (1) GD [EEx ia] IIC
USB interface
U < 30 V
i
–
230 1100 Ω
–
Ta = 20 °C...+50 °C
for passive device:
auxiliary energy / PLC
Commubox
52027293