Emerson SiteLink-12E - Manual (Page 12)

Communication and Control Wiring
8
4.1.1 Wiring IGM Ports
1. Connect the IGM wiring to the SiteLink-E IGM ports, using the labels above the ports as a guide
(see Figure 7).
2. If using a four-wire connection, set the jumpers, located behind the terminals, as required for the
protocol to be implemented. A guide is at the lower right corner of the module’s housing.
Figure 7 IGM connections
Figure 8 Liebert precision cooling units networked with Liebert SiteLink-E modules
Ports 1-8 on
Liebert SiteLink -E
SSW-12E
Ne
t+
Ne
t-
Ports 1-2 on Liebert SiteLink -E SSW-2E
Ports 1-4 on Liebert SiteLink -E SSW-4E
Ports 9-12 on Liebert SiteLink -E SSW-12E
Tx + Tx - Rx + Rx -
Net + Net - n/c n/c
Tx Rx Gnd n/c
4 wire
2 wire
EIA-232
Ports 9-12
EIA-485
EIA-232
Two-Wire IGM Port
on Liebert SiteLink-E
Four-Wire IGM Port
on Liebert SiteLink-E
Connect
Communication Wiring
to Terminals
According to Labels
Above Ports
Terminals
Jumper
Setting
Guide
Jumpers
(on 4-Wire
Terminals
only)