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Tunnel Master® Jr. User Manual
Chapter 2: Hardware Installation
Anti-Collision Wiring
IMPORTANT: The anti-collision on the Tunnel Master® Jr. is a function to help prevent cars from
running into each other at the exit end of the tunnel. In order for this to work you need an anti-
collision device mounted in the tunnel at the spot where you could have a potential collision.
The process consists of two variables in order for the Tunnel Master® Jr. to go into an anti-collision
panic. The first variable is for the Tunnel Master® Jr. to validate a car through some sort of sensing
device. The second variable is the anti-collision start time in the wash settings on the Tunnel Master®
Jr. When a car is in the sensing device and a second car reaches the Anti-collision Start Time, the
system will go into a panic until the sensing device is cleared. The system must also have a panic
circuit wired for this function to be able to restart the conveyor.
The magnetic loop and the photo eye are two examples of anti-collision devices that operate the
open contacts that interact with the Tunnel Master® Jr. wash controller.
The following diagram shows how to wire an anti-collision system into the Tunnel Master® Jr.
24 VAC SUPPLY
(BY OTHERS)
COMMON
NORMALLY
OPEN
ANTI- COLLISION
DEVICE CONTACTS
ANTI - COLLISION DETECTION CIRCUIT
L
N
TMJ RELAY BOX TERMINAL STRIP (TOP)
Input 11 -
Input 11 +
Alternate symbol for N.O. Switch
Figure 2-13. Anti-Collision Wiring
Summary of Contents for Tunnel Master Jr
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