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Tunnel Master® Jr. User Manual
Chapter 2: Hardware Installation
Roller Locator Wiring
IMPORTANT: You can add a roller locator to the Tunnel Master® Jr. to keep your rollers
from jamming your conveyor. In order to do this, a roller locator switch must be installed
on your conveyor to signal the presence of a roller.
When a roller locator is used, the Tunnel Master® Jr. will wait to fire a roller until the trailing edge of
the signal is detected from a roller locator. There are various devices available to detect the roller and
because the Tunnel Master® Jr. reads the trailing edge of the signal either a normally open or normally
closed switch can be used.
To set this up two things need to be done:
A roller locator switch needs to be wired into Input 9, and installed on the conveyor. This
switch should be positioned so that as soon as a roller passes the switch it will be in a
position where it is safe for the roller forks to come up.
Turn the roller locator function on in Wash Settings.
The following diagram shows how to wire the roller locator into the Relay Box.
Panic Stop Circuit Wiring
Roller Locator Device
Conveyor Surface
Roller forks in the UP position
Conveyor direction
Roller
Roller forks in the DOWN position
Conveyor roller locator cross section diagram
Figure 2-10. Roller Locator Cross Section Diagram
24 VAC SUPPLY
(BY OTHERS)
COMMON
NORMALLY
OPEN
ROLLER LOCATOR
DEVICE CONTACTS
ROLLER LOCATOR CIRCUIT
L
N
TMJ RELAY BOX TERMINAL STRIP (TOP)
Input 9 -
Input 9 +
Alternate symbol for N.O. Switch
Figure 2-11. Roller Locator Wiring
Summary of Contents for Tunnel Master Jr
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