Rockwell Automation Allen-Bradley 6181, User Manual, Page: 27 / 91

Installation 2–13
Publication 6181-6.0
A standard three position terminal block is provided for connecting
power. Use 12 or 14 AWG stranded wire to connect these terminals to a
stable source of 24V DC power with 10A minimum rating available.
Observe proper polarity and keep the wiring as short as possible
(recommend less than 3 meters). Ensure that the wires are connected
correctly using standard wiring practices. Twist the wires 1-3 twists per
inch.
ATTENTION: The ground connection must be made to
an adequate earth ground using as short a wire as possible
to eliminate the possibility of radio frequency noise and
interference.
The 6181 Computer accommodates CAT5 twisted pair Ethernet cabling
with RJ45 connectors to support 100 Mbps network data transfer.
Important:
Performance degradation of your Ethernet communications
is likely to result if the unit or cables are subjected to
extreme radiated or conducted high-frequency noise. It is
the user’s responsibility to properly route cables and
condition input power in order to improve communication
reliability.
Proper cable routing and power conditioning is required to
ensure reliable Ethernet communications in industrial
environments. Rockwell Automation recommends that all
Ethernet cabling be routed through dedicated metal
conduits. Installing ferrite bead filters at cable ends may
also improve reliability.
DC Power Connections
Network Connections