Figure 14 Connecting The Remote Temperature/Humidity Sensors - Emerson Liebert XDP User Manual

Figure 14 Connecting the remote temperature/humidity sensors

CAN
Cable
See
Note 4
P64 P66
See Note 4
Unit Display
(Rear View)
Red Crossover
Ethernet Cable
Crossover Coupler
See Note 6
Ribbon
Cables
P1
P2
P65
P3
Liebert IntelliSlot
Power Supply
1. See unit electrical schematic, installation and user manuals.
2. Cables "A" and "B" provided with each unit. Only one is used as follows:
Liebert IntelliSlot-based communications - Cable "A" is preconnected to P65
on microprocessor and input/output board and P65 on Liebert IntelliSlot
power supply non-Liebert IntelliSlot-based communications - Vable "B" is
pre-connected to Terminals 77 and 78 but must be exchanged with Cable "A"
at P65 on the microprocessor and input/output 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 Sensor "B."
See Note 8
CAN Ground
Coupler
Termination
Plug
P67
See Note 3
Not
Used
See
Note 2
77 78
302211
Rev. 2
P66
P67
Liebert XD
Cooling Module
P2 P4
CAN Iso
Adapter
P1 P3
See Note 8
See Note 5
P66 P67
Remote T/H Sensor A
See
Note 9
T6 Isolation
Transformer
T1 Unit Control
Transformer
P13
P11 P7
P12
P43
1
2
OF F ON
P78
3
P67
SW
2
P66
P64
2 4 6
1 3 5
P68
P61
P65 P4
Liebert iCOM Microprocessor
and I/O Board
See Table for
Plug Assignments
P40
P8
P34 P35
P32 P33 P36
6. A crossover coupler is provided for unit-to-unit (U2U) networking. Unplug
the red cable from P64 on the microprocessor and input/output board
and connect to one side of the crossover coupler. The first customer
connection point is to P64 on the microprocessor and input/output board.
The second customer connection point is to the other side of the crossover
coupler. This connects the microprocessor and input/output 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
14
P66
Liebert XD
Cooling Module
CAN Ground
Coupler
See Note 5
P66 P67
Remote T/H Sensor B
See Note 7
24VAC Nominal
P41
P24
Control
Fuse
Board
P45
P4
Installation
P67