Safety instructions for use in hazardous locations according to UL/FM HazLoc
If you use the device under UL or FM HazLoc conditions, you must also adhere to the
following safety instructions in addition to the general safety instructions for protection
against explosion:
WARNING
EXPLOSION HAZARD
You may only connect or disconnect cables carrying electricity when the power supply is
switched o or when the device is in an area without inammable gas concentrations.
Safety notices when using according to FM
If you use the device under FM conditions you must also keep to the following safety notices
in addition to the general safety notices for protection against explosion:
WARNING
EXPLOSION HAZARD
Do not disconnect while circuit is live unless area is known to be non-hazardous.
WARNING
Explosion hazard
Do not disconnect equipment when a ammable or combustible atmosphere is present.
Safety instructions when using in accordance with UL 61010-1 / CSA-C22.2 No. 61010-1
If you use the device under UL 61010-1 / CSA-C22.2 No. 61010-1 conditions, you must also
keep to the following safety instructions in addition to the general safety instructions for
protection against explosion:
WARNING
Connecting cables for DC power supply
To connect the power supply in the scope of validity of UL 61010-1 / CSA-C22.2 No. 61010-1,
only use copper cables.
WARNING
Circuit breaker for DC power supply
An external switch or miniature circuit breaker must be provided and marked as circuit breaker
for the device. The circuit breaker must be located close to the device and easily accessible for
actuation.
For operation with AC power supply, the IEC plug is provided for disconnecting the device.
Connecting up
6.1Safety when connecting up
SCALANCE XR-500
64 Operating Instructions, 07/2023, C79000-G8976-C692-01
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