Mounting, connecting up and commissioning
3.4 External power supply
SIMATIC RF120C
Operating Instructions, 02/2021, C79000-G8976-C328-03
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3.4 External power supply
Power supply
The 3-pin socket for the external 24 VDC power supply is located on the top of the module.
The reader is supplied with voltage via this power supply. The matching plug with screw
terminals ships with the product. If there is overload, the RF120C turns off the power supply
to the reader and signals this to the CPU.
Mounted terminal block for the 24 VDC power supply of the reader
Figure 3-4 Terminal block for the 24 VDC power supply
The RF120C is supplied with power via the backplane bus and can also be addressed and
commissioned without an external power supply from the SIMATIC S7-1200.
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