Vertiv Liebert XD Series, System Design Manual

Page: 165 / 200

• Do not run cables through conduit. Cables should be treated the same as any other data cable.
Running CANbus cables through conduit will increase the total length required.
7.9 Network Layout Options
The Liebert XDP and Liebert XDC have two CANbus ports each (P2 and P4) on the CAN Isolator in the low
voltage side of the electrical box (see Figure 7.11 on page 170 andFigure 7.12 on page 171). This allows for
two chains of the network to be created to minimize the total network length.
7.9.1 Remote Temperature/Humidity Sensor Placement and Connection to the CANbus
The Liebert XDP and Liebert XDC are shipped with two remote temperature/humidity sensors. One
sensor should be placed closer to the Liebert XDP or Liebert XDC; the other should be placed in the
warmest part of the cold aisle or in the return air stream of a computer room air conditioning unit, such as
as the Liebert DS™ or Liebert CW™.
One shielded CANbus cable is provided with each sensor.
The remote sensors can be placed at the end of a chain or in the middle of a daisy chain as shown.
Refer to Figure 7.7 on the next page andFigure 7.8 on page 167 for examples of acceptable network
layouts.
Vertiv | Liebert® Xtreme Density™ System Design Manual | 165