Siemens SIMATIC NET SCALANCE XR124WG Manual page 11

WARNING
Notes on use in the
hazardous area according to
UL-HazLoc/FM
This equipment is suitable for use in
Class I, Division 2, Groups A, B, C and
D or non-hazardous locations only.
This equipment is suitable for use in
Class I, Zone 2, Group IIC or non-
hazardous locations only.
EXPLOSION HAZARD
Do not disconnect equipment when a
flammable or combustible atmosphere
is present.
Notes on use in the
hazardous area according to
FM
To fulfill the requirements of the FM
approval rack mounting is only
possible in a vent free, tool-secured
enclosure.
The equipment is intended to be
installed within an enclosure/control
cabinet. The inner service temperature
of the enclosure/control cabinet
corresponds to the ambient
temperature of the module. Use
installation wiring connections with
admitted maximum operating
temperature of at least 30 °C higher
than maximum ambient temperature.
Substitution of components may impair
suitability for Division 2.
Do not remove or replace while circuit
is live when a flammable or
combustible atmosphere is present.
You may only connect or disconnect
cables carrying electricity when the
power supply is switched off or when
the device is in an area without
inflammable gas concentrations.
WARNING
Notes on use in the
hazardous area according to
FM
EXPLOSION HAZARD
Do not disconnect equipment when a
flammable or combustible atmosphere
is present.
Notes on use in the
hazardous area according to
UL 61010-2-201
The devices are "open equipment" acc.
to the standard UL 61010‑2‑201. To
fulfill requirements for safe operation
with regard to mechanical stability,
flame retardation, stability, and
protection against contact, the following
alternative types of installation are
specified:
• Installation in a suitable cabinet.
• Installation in a suitable enclosure.
• Installation in a suitably equipped,
enclosed control room.
If the cable or housing socket exceeds
70 °C or the branching point of the
cables exceeds 60 °C, special
precautions must be taken. If the
equipment is operated in an air ambient
in excess of 40 °C, only use cables with
admitted maximum operating
temperature of at least 80 °C.

Continued
A5E39701956-AB, 09/2017
English