Multi-Module Communication; Communication Board In System - Emerson Liebert NXL Installation Manual

2.4.2

Multi-Module Communication

Paralleling cables that connect the module to the system are connected to terminals P3101 and P3103
on the Inter-Module Communication (IMC) board (refer to 4.0 - Installation Drawings).
Table 5 Parallel from UPS module Inter-Module Communication Board to other Inter-Module

Communication Board in system

Terminal Designation
From
Primary Connections
P3101-1
P3101-2
P3101-3
P3101-4
P3101-5
P3101-6
P3101-7
P3101-14 P3101-14
P3101-8
P3101-9
P3101-10 P3101-10
P3101-11 P3101-11
Redundant Connections
P3103-1
P3103-2
P3103-3
P3103-4
P3103-5
P3103-6
P3103-7
P3103-14 P3103-14
P3103-8
P3103-9
P3103-10 P3103-10
P3103-11 P3103-11
1. Belden 810x or Belden 89901 cables are the only approved cables.
2. Belden 89901 cable can be used for underground installations.
3. If using multiple parallel cables for each run, all cables must be run in the same conduit.
4. Each cable group should be run in a separate grounded conduit to ensure redundancy.
5. The maximum lengths must include all the parallel cables from the first module to the last module. The primary and redundant
cable lengths can be counted separately.
6. The ground pins on the Inter-Module Communication Board (Pins 7 and 14) are connected together on the board. If using
cable with only one (1) drain wire, then connect to the ground to Pin 7.
7. Care must be taken so drain wire does not touch any other component in module.
8. Attach control wires to side of control door where Inter-Module Board (IMC) is attached. Do not run wires across IMC board.
To Signal Name
P3101-1 Share CAN +24V
P3101-2 Share CAN common
P3101-3 System CAN +24V
P3101-4 System CAN common
P3101-5 SER synch CAN+24V
P3101-6 SER synch CAN common
P3101-7 Ground - Drain Wire
Ground
P3101-8 PWM synch CAN +24V
P3101-9 PWM synch CAN common
MMS synch CAN +24V
MMS synch CAN common
P3103-1 Redundant share CAN +24V
P3103-2 Redundant share CAN common
P3103-3 Redundant system CAN +24V
P3103-4 Redundant system CAN common
P3103-5 Redundant SER synch CAN +24V
P3103-6 Redundant SER synch CAN common
P3103-7 Ground - Drain Wire
Ground
P3103-8 Redundant PWM synch CAN +24V
P3103-9 Redundant PWM synch CAN common
Redundant MMS synch CAN +24V
Redundant MMS synch CAN common
Max Length
1000ft.
(300m)
1000ft.
(300m)
12
UPS Electrical Installation