Unitec Sentine Installation Manual - Manual (Page 17)

S E N T I N E L
Document Number: SENT1001 13
3.6 Wash Control Wiring
3.6.1 Overview
In applications where the Sentinel 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. 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.
3.6.2 Wiring the Wash Relay Interface
To wire the wash relays, connect the wires that come from the PLC to the appropriate pin numbers in the
phoenix connector using the following procedures:
Note:
The wiring for the Sentinel Wash I/O board is the same as the wiring for the Wash
Select II wash interface.
3 . 6 . 2 . 1 P r e p a r a t i o n
• You will need a thin tipped, flat head screwdriver to open and tighten the relay connections of
the Phoenix connector.
• Review the wash manufacturer’s documentation to determine the color codes for the wiring of
the wash pin-outs for your wash equipment before beginning this installation.
• Phoenix connectors are shipped already inserted in the appropriate sockets on the Wash I/O
board.
1. Remove the Carrier Board/Wash I/O Board Cover Plate using a 5/16” socket wrench.
2. Locate the Wash I/O board on the inside lower right-hand wall of the Sentinel case.
3. On the Wash I/O Board, locate the 10-pin Phoenix connector labeled J17 on the lower
right-hand corner of the Wash I/O board.
Document Name: Sentinel Installation Manual