Installation, Connecting Up, Commissioning; Important Notes On Using The Device; Notices On Use In Hazardous Areas - Siemens LOGO! CMR2040 Operating Instructions Manual

Installation, connecting up, commissioning

3.1

Important notes on using the device

Safety notices on the use of the device
The following safety notices must be adhered to when setting up and operating the device
and during all associated work such as installation, connecting up or replacing devices.
Overvoltage protection
NOTICE
Protection of the external power supply
If power is supplied to the module or station over longer power cables or networks, the
coupling in of strong electromagnetic pulses onto the power supply cables is possible. This
can be caused, for example by lightning strikes or switching of higher loads.
The connector of the external power supply is not protected from strong electromagnetic
pulses. To protect it, an external overvoltage protection module is necessary. The
requirements of EN61000-4-5, surge immunity tests on power supply lines, are met only
when a suitable protective element is used. A suitable device is, for example, the Dehn
Blitzductor BVT AVD 24, article number 918 422 or a comparable protective element.
Manufacturer:
DEHN+SOEHNE GmbH+Co.KG Hans Dehn Str.1 Postfach 1640 D-92306 Neumarkt,
Germany
3.1.1

Notices on use in hazardous areas

EXPLOSION HAZARD
The device must not be opened.
The device may only be operated in an environment with pollution degree 1 or 2 (see IEC
60664-1).
LOGO! CMR2020, LOGO! CMR2040
Operating Instructions, 10/2016, C79000-G8976-C356-03
WARNING
WARNING
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