Siemens SICLOCK TC 400 Operating Instructions Manual page 28

Operation Planning
Use in residential areas and operation in the public network
If you operate the SICLOCK TC 400 in residential areas or in the public network,
you must ensure that it complies with the limit class B according to EN 55022 with
regard to the emission of radio interference.
Note
This is a a class A device. The device may cause RF interference in residential
areas or in the public network. In this case, the operator company may be held
liable for taking appropriate measures.
The following measures are recommended to ensure the interference complies
with limit class B:
• Installation of the SICLOCK TC 400 in grounded control cabinets / control
boxes
• Use of filters in electrical supply lines
Use with additional measures
Applications where the use of the SICLOCK TC 400 or similar device requires
additional measures:
• Locations with a high percentage of ionizing radiation
• Locations with extreme operating conditions, such as
− dust accumulation
− corrosive vapors or gases
− strong electric or magnetic fields
− damp and wet rooms
− strong oscillations, shocks, vibrations
− strong radiant heat
• In systems, which require special monitoring, such as
− elevators
− electrical plants in potentially hazardous areas
An additional measure, for example, would be to install the SICLOCK TC 400 in
a cabinet or housing.
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SICLOCK
®
TC 400