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Open equipment
The devices are "open equipment" acc. to the standard IEC 61010-2-201 or UL 61010-2-201
/ CSA C22.2 No. 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.
Installation
NOTICE
Install and remove the device only when the power is off
Turn off the power supply to the station before you install or remove the module. Installing
and removing modules with the power supply on can lead to damage to the modules and to
loss of data.
NOTICE
Installation location - Dependency of the temperature range
Note the dependency of the permitted temperature range on the installation location:
• Horizontal installation of the rack (DIN rail) means a vertical position of the modules.
• Vertical installation of the rack (DIN rail) means a horizontal position of the modules.
You will find the permitted temperature ranges in the section Technical specifications of the
CM (6GK7542-1AX00-0XE0) (Page 53).
Minimum clearances
Install the module in such a way that its upper and lower ventilation slits are not covered,
allowing adequate ventilation as protection from overheating.
Keep to the following minimum clearances for the circulation of air when the rack is
installed horizontally:
• Above the module: At least 33 mm
• Below the module: At least 25 mm
SIMATIC CM 1542-1
Operating Instructions, 04/2023, C79000-G8976-C355-05
WARNING
Installation, connecting up, commissioning, operation
3.3 Installation
29
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