Installation
3.1 Securing the housing
SCALANCE M874, M876
32 Operating Instructions, 08/2018, C79000-G8976-C331-08
General notes on use according to ATEX and IECEx
To comply with EC Directive 2014/34 EU (ATEX114) or the conditions of IECEx, this
enclosure or cabinet must meet the requirements of at least IP54 in compliance with
EN 60529.
Securing the housing
Types of installation
For the device, you have the following options:
● Wall mounting (no ceiling mounting)
● Installation on a DIN rail
● Installing on the S7-300 standard rail
● Installing on the S7-1500 standard rail
● Mounting on a pedestal
Strain relief for the cables
Regardless of the type of installation, make sure that there is suitable strain relief for the
connecting cable.
If cables are installed permanently, it is advisable to remove the insulation of the shielded
cable and to establish contact on the shield/PE conductor bar.
Permitted installation direction
● Vertical installation (ventilation openings at the top and bottom)
Keep to the minimum clearances to other components or to walls of a housing so that the
convection ventilation of the device is not blocked.
● Below at least 10 cm
● Above at least 10 cm
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