Power Supply; Grounding Connection - Siemens SIMATIC RF600 System Manual

Readers
5.1 RF660R reader
5.1.1.7

Power supply

Pin assignment of the power connections
Power connector
5.1.1.8

Grounding connection

A low-impedance earth connection ensures that interference signals generated, for example,
by external power supply cables or signal cables are safely discharged to earth.
Earthing connection
88
Pin Pin assignment
1 Ground (0 V)
2 +24 V
3 +24 V
4 Ground (0 V)
The ground terminal (M4 threads) on the
device (large surface, large-area contact) has
to be connected with the ground conductor of
the plant or the cabinet in which the reader is
to be installed.
The minimum conductor cross-section may
not be less than 2.5 mm
System Manual, 10/2009, J31069-D0171-U001-A8-7618
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SIMATIC RF600