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Chapter
4
Technical Information
RFU63x RFID Write/Read Device (UHF)
46
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SICK AG · Germany · All rights reserved · Subject to change without notice
8014335/YUO7/2016-04-04
Electrical installation
The CDB650-204 and CDM420-0006 connection modules have each one fuse (2 A slow
blow) in the electrical circuit downstream of the S1 switch.
Wiring without SICK connection module
The connecting cable no. 6042772 (17-pin D-Sub HD female connector and open cable
end) can be used for wiring without the CDB650-204 or CDM420-0006 connection module.
The RFU63x must then be protected using a separate, slow-blow fuse (max. 2 A) at DC 18
V ... 30 V in the supplying circuit at the start of the supply cable.
Note on reverse polarity protected supply voltage for the RFU630
NOTICE
Risk of damage to the RFU630 due to possible short-circuit!
The supply voltage input for the RFU630 is designed with internal circuit protection to pro-
vide reverse polarity protection. The internal function ground of the RFU630 has a direct gal-
vanic connection to the metal housing of the RFU630 due to reasons relating to high
frequency.
If the supply voltage has the incorrect polarity, this will not cause any damage provided that
the RFU630 is not connected
by either other cables
or its housing
to other peripheral devices that use the same grounding point.
CDM420-0006
Supply voltage
Chapter 4.9.2 Wiring the supply voltage in the CDM420-
0006 connection module, Page 65
Connection module
interface
Chapter