Connecting up
4.1 Safety when connecting up
SCALANCE M826
40
Operating Instructions, 08/2018, C79000-G8976-C362-05
Safety notices on use in hazardous areas
General safety notices relating to protection against explosion
WARNING
EXPLOSION HAZARD
Do not connect or disconnect cables to or from the device when a flammable or
combustible atmosphere is present.
Safety notices for use according to ATEX and IECEx
If you use the device under ATEX or IECEx conditions you must also keep to the following
safety notices in addition to the general safety notices for protection against explosion:
WARNING
Take measures to prevent transient voltage surges of more than 40% of the rated voltage.
This is the case if you only operate devices with SELV (safety extra-low voltage).
Safety notices when using the device according to Hazardous Locations (HazLoc)
If you use the device under HazLoc conditions you must also keep to the following safety
notices in addition to the general safety notices for protection against explosion:
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.
WARNING
EXPLOSION HAZARD
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.
Summary of Contents for SIMATIC NET SCALANCE M826
Page 7: ...Preface SCALANCE M826 Operating Instructions 08 2018 C79000 G8976 C362 05 7 ...
Page 8: ......
Page 16: ...Security recommendations SCALANCE M826 16 Operating Instructions 08 2018 C79000 G8976 C362 05 ...
Page 28: ......
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Page 74: ...Index SCALANCE M826 74 Operating Instructions 08 2018 C79000 G8976 C362 05 ...