Envipco U48DFF, Service Manual

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Chapter 3 Hardware Components
3-6
3.3.1. RGB LED Light
An
RGB LED
that is mounted to the front of the Sensor Tunnel gives the customer a visual cue of when
to insert containers: It turns green when the
RVM
is ready to accept containers, and it turns red when
the customer should stop inserting containers. See Figure 3-4 for the location of the light.
3.3.2. Scanners
The Sensor Tunnel has six scanners mounted to it: two on the left side, two on the top, and two on the
right side. The six scanners are wired to a multiplexer (
MUX
) board that coordinates the flow of data to
and from the
RVM
software, so they are all working together as if it was one larger scanner. This scheme
provides a wide scanning range to find a container’s bar code without having to take the time to rotate
the container. See Figure 3-4 to see the location of the scanners.
3.3.3. Motorized Conveyor and Rollers
The front conveyor pulls the container into the machine. As the container travels on the conveyor, the
scanners attempt to read the bar code. If the bar code is on the bottom, the scanners cannot see it. In
this case, the elevator drops the conveyor down to allow the rollers to turn the container. Once a scanner
finds the bar code, the conveyor elevates to its working position and can either go forward to push the
accepted container into the Sorting Cylinder or reverse to reject the container. See Figure 3-6 for an
illustration of the conveyor and rollers.
FIGURE 3-6.
Conveyors and Rollers