Notes on Figure 3.16 on the previous page
1. See unit electrical schematic, installation and user manuals.
2. Cables A and B provided with each unit. Only one is used as follows:
a. Liebert IntelliSlot-Based Communications—Cable A is pre-connected to P65 on the
microprocessor and I/O board and P65 on Liebert IntelliSlot power supply.
b. Non-Liebert IntelliSlot-Based Communications—Cable B is pre-connected to Terminals
77 & 78 but must be exchanged with Cable A at P65 on the microprocessor and I/O
board.
3. Install applicable Liebert IntelliSlot cards.
4. Both cables (P64 and P66) are required.
5. It is not necessary to connect ground coupling on end of cable connected to Sensor A or B.
6. A crossover coupler is provided for unit-to-unit (U2U) networking. Unplug the red cable from
P64 on the microprocessor and I/O board and connect to one side of the crossover coupler.
The first customer connection point is to P64 on the microprocessor and I/O board. The
second customer connection point is to the other side of the crossover coupler. This connects
the microprocessor and I/O board and display to the private U2U network.
7. The remote sensors are interchangeable as to which connects to the Liebert XD cooling
module and which connects to P2 on CAN ISO.
8. Field-install cables with factory-installed ferrite beads (when provided, typical two places).
Each cable must make three passes through the ferrite bead. Locate the ferrite bead on top of
the electric box. See instruction sheet provided with the cable assembly.
9. Factory-installed ferrite bead (when provided). Cable passes through ferrite bead three times.
Vertiv | Liebert® XDC™ User Manual | 30