Unitec Portal Installation Manual - Manual (Page 26)

P O R T A L T I
Portal Installation Manual Rev C 22
Figure 18. Telephone Line Connection (for Data Modem)
3.7 Wash Control Wiring
3.7.1 Overview
In applications where the Portal will communicate with the Wash Controller, the wash
control wires will need to be connected to the Wash I/O Board.
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. Each of the four arming input wires signal the
equipment to give only the designated wash options. When a customer purchases a
wash package, the Portal TI sends a signal down the appropriate arming input wire
through 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.
Document #: PTL1001