Vertiv Liebert XD Series, System Design Manual

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7.9.2 CANbus Maximum Length
The CANbus network (the sum of the two CANbus chains) has a maximum length limitation.
• If the Liebert XDP or Liebert XDC with iCOM does not have a CAN Isolator, the maximum
distance is 150 ft. (46m) total network without measuring the final device voltage. The 150 ft.
(46m) total must also include the remote temperature and humidity sensor cable lengths.
• If the Liebert XDP or Liebert XDC contains a CAN Isolator, the maximum distance is 300 ft.
(91m). To exceed this length, the final device voltage must be measured.
7.10 CANbus Cables
The Liebert XDP may be connected to the Smart Modules with a CANbus cable. The shielded cable
consists of three pairs of twisted wires with a 6-pin RJ12 connector.
NOTICE
Risk of improper wiring. Can cause equipment damage.
Mismatching wire pins at the RJ12 connection will damage the CAN device. Extreme caution should be
taken when making cables.
Figure 7.9 CANbus cable
Liebert Part # Dimension A ft. (m)
300157G1 6 (1.8)
300157G2 10 (3)
300157G3 20 (6)
300157G4 30 (9.1)
300157G5 60 (18.3)
300157G6 90 (27.4)
300157G7 120 (36.6)
300157G8 150 (45.7)
300157G9 6.25 (1.9)
300157G10 3 (0.9)
Table 7.3 CANbus cable lengths and part numbers
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