Vertiv Liebert XD Series, System Design Manual

Page: 61 / 200

Figure 3.31 CANbus cable wiring
Length ft (m) Part #
3 (0.9) 300157G10
6 (1.8) 300157G1
10 (3.0) 300157G2
15 (4.6) 300157G11
20 (6.1) 300157G3
30 (9.1) 300157G4
60 (18.3) 300157G5
90 (27.4) 300157G8
120 (36.6) 300157G7
150 (45.7) 300157G8
Table 3.21 CANbus cable part numbers
Plan wiring runs for U2U communication when designing the layout of the conditioned space. In addition
to following general good wiring practices, take these precautions:
• Keep control and communication cables away from power cables to prevent electromagnetic
interference.
• Do not bend cables to less than four times the diameter of the cable.
• Do not deform cables when securing them in bundles or when hanging them.
• Keep cables away from devices that can introduce noise into them, such as machines,
fluorescent lights and electronics.
• Avoid stretching cables; tension when pulling cables should not exceed 25 pounds (11kg) of
pulling tension.
• Do not secure cables with any method that might damage them. Use approved hangers, such
as those for telephone wire or RG-6 coaxial cable, available at most hardware stores.
3.27.2 CANbus Cable Length in a Network
The maximum total length of cable that can be used in a CANbus network differs by the type of Liebert
XD cooling module as shown in Table 3.22 on the next page.
Vertiv | Liebert® Xtreme Density™ System Design Manual | 61