Tunnel Master® wbc Installation Guide
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Electrical Installation
The Tunnel Master® wbc is the control center for “firing” the various outputs or services in the wash
tunnel: soap foamer, reclaim motor, and more. The Tunnel Master® wbc provides for automatic,
computer controlled, or manual firing of the outputs. The system can control up to 192 outputs and
64 inputs (48 of which are user-programmable).
Locating Boards and Terminal Blocks
This section provides details on boards, component locations, and terminal block identification:
Main CPU board
Input board
Up to four directly connected Relay boards
24 V DC power supply
12 V AC transformer used for supplying the following:
• Isolated 5 V DC RS485
• 5 V DC for 16 main CPU board inputs
• 48 auxiliary inputs on the input board
• All start/stop inputs
