4.6 Phase Loss Terminals (Optional)
The optional terminals for Phase Loss are available on TB5. This is a dry contact output that is
normally closed whenever all three phases are active. Should any one or more phase drop out, the
contact will open and thus provide a signal for activation of an emergency source. Usually, this contact
is prewired by Lehigh to additional relay circuits that are specific for the particular project.
Figure 15: Phase Loss Terminals
4.7 Ethernet Connections
TB12 & TB13 provide hard-wired connections to access the SCM via Ethernet. The connections are
based on the standard EIA T-568B wiring whereby the orange & green pairs are signals, and the blue &
brown pairs are terminated. This connection can be wired to an Ethernet patch block for access
remotely, or can be connected directly to a computer with either a cross-over cable or a patch cable for
use with the DxDirector DX3 program. Multiple racks may be linked together with an Ethernet switch,
and then networked via the DxDirector DX3 program for control from one software interface.
Each SCM maintains its own IP address, and, by default, is 2.0.0.10, on Subnet 255.0.0.0. The IP
address can be changed to anything you want, so that the system can live on an already established
network. Directions for changing this IP address are found in Section 7 of this manual. Directions to
connect to DxDirector DX3 are found in the DxDirector DX3 manual.
Figure 16: Ethernet Wiring
DX3 Manual
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