Emerson Liebert iCOM, Manual

Page: 87 / 172

Teamwork
79 Liebert
®
iCOM
®
for Liebert DSE
™
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.
Figure 57 Connect CANbus cable
4.3.5 Replace CANbus Cable Between Liebert iCOM Display and Liebert iCOM Main Board with
Grounded CANbus Cable
The incoming CANbus cable from the first 2T sensor in the daisy chain is landed on the rear of the
Liebert iCOM display. The factory installed CANbus cable from the rear of the display to the main
board in the electrical panel does not included a ground feature and must be replaced with a 6' (1.8m)
grounded CANbus cable. This installation will require four tie wraps to replace those cut during the
removal of the factory-installed CANbus cable from the display to the main board. Ensure there is
enough slack in the wire to allow the door to open and close freely, but not too much slack to bind or
pinch when the door is shut.