To connect the cables:
1. Connect CANbus cable and a ground wire between each sensor for the cooling unit, Figure 9.12
below, taking the following precautions:
NOTE: Remember that the last sensor on the chain must be terminated as described in Terminating the
last sensor on the CANbus link on page94.
• Use only approved hangers, and do not secure cables in a way that could damage them.
• Limit bends to less-than 4-times the diameter of the cable.
• When securing and hanging, avoid deforming the cable.
• Keep cables away from devices that may cause interference such as high-voltage wires,
machinery, fluorescent lights and electronics.
NOTE: High-voltage sources much be at-least 12 in. (305mm) from CAN wires.
• Avoid stretching cables.
• Avoid using excess cable between sensors.
• Make sure that cables have the correct pin-out. Mismatched pins at the RJ2 connection
will damage the CAN device.
2. Connect the ground connection between each sensor, Figure 9.12 below.
Figure 9.12 CANbus and ground connection on 2T sensor
Vertiv | Liebert CRV Installer/User Guide | 104
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