Unitec C-Start Installation Manual - Manual (Page 13)

C - S T A R T
Document Number: CST1001 9
3.3 Wash Control Wiring
3.3.1 Overview
In applications where the C-Start will communicate with the Wash Controller, the
wash control wires will need to be connected to the Wash I/O Board. This board is
located on the right wall of the enclosure and is shown in the picture below. The
board is supplied with screw terminal plugs (not shown) installed in the green
connectors to accommodate field wiring. You will need a thin tipped, flat head
screwdriver to open and tighten the screw terminals.
Figure 6. Wash I/O Board Connector Pinouts
Most wash manufacturers use a five-wire system to provide the arming signals for the
selected wash packages. One common line and four arming input wires are fed from
the wash’s PLC to the Wash I/O board. In addition to these five wires, a Wash-In-
Use (WIU) Hot and WIU Neutral are required to reset the wash electronics. Typically,
these are also provided by the PLC.
Each wash manufacturer has its own specific color code system and wash relay pin-
outs; therefore, it is important to review the appropriate wash documentation prior to
beginning this portion of the installation.
Document Name: C-Start Installation Manual