Siemens SIMATIC RF600 Series System Manual page 16

Safety Information
2.1 General safety instructions
Operating temperature
Increased temperatures on the lower casing
Note that the lower casing of the readers is made of metal. This means that temperatures
can occur on the lower casing that are higher than the maximum permitted operating
temperature.
Do not expose the readers to direct sunlight
Note that the readers must not be exposed to direct sunlight. Direct sunlight can lead to the
maximum permitted operating temperature being exceeded.
Overvoltage protection
NOTICE
Protection of the external 24 VDC voltage supply
If the module is supplied via extensive 24 V supply lines or networks, interference by strong
electromagnetic pulses on the supply lines is possible, e.g. from lightning or the switching
of large loads.
The connector for the 24 VDC external power supply is not protected against strong
electromagnetic pulses. Make sure that any cables liable to lightning strikes are fitted with
suitable overvoltage protection.
Repairs
Repairs only by authorized qualified personnel
Repairs may only be carried out by authorized qualified personnel. Unauthorized opening of
and improper repairs to the device may result in substantial damage to equipment or risk of
personal injury to the user.
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CAUTION
CAUTION
WARNING
System Manual, 11/2018, J31069-D0171-U001-A21-7618
SIMATIC RF600