Emerson Liebert iCOM User Manual Page 97

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iCOM
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4.3.5 Install CANbus Cable Between 2T Sensors
No special considerations are required for cable up to 150 ft. (45m) long. A CANbus isolator is
required for cables between 150 ft. and 300 ft. (45m and 91m). Contact the factory if using CANbus
cables longer than 300ft (91m).
The CANbus cable network requires a ground wire. The grounds are connected at each 2T sensor and
must be terminated to a field-installed ground ring in the low-voltage electrical panel. Figure 74
shows the connected grounds on a 2T sensor.
Figure 74 Connect CANbus cable
Follow these guidelines when routing CANbus cable to ensure reliable communication.
Use approved hangers, such as telephone wire/RG-6 coaxial wired hangers; do not secure cables
with any method that might damage them.
Limit bends to less than four times the diameter of the cable.
Avoid deforming cables when securing in bundles and when hanging them.
Keep cables away from devices that may introduce interference, such as high-voltage wires,
machines, fluorescent lights, and electronics. High-voltage sources must be at least 12 inches
(305mm) from CAN wires.
Avoid stretching cables.
Ensure that cables have the correct pin-outs. Mismatching wire pins at the RJ12 connection will
damage the CAN device.
Cables may be purchased from your local Emerson distributor.
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