Dispenser Functional Description
Presenter
NCR 5635 Spray Currency Dispenser Service Manual
1-17
NCR - CONFIDENTIAL AND PROPRIETARY
Use pursuant to Company Instructions
The LVDT is situated in the 5635 presenter transport. It gives an
electrical output proportional to the displacement of a movable
roller assembly caused by bills passing between it and a fixed
reference roller. The movable roller is attached to a ferrite core
which projects through a sensing coil printed on a pcb. The output
from the coil is digitized, integrated, and is compared to the
expected value (held in memory) for the currency being dispensed.
In this way, torn, folded, or multiple bills are detected and diverted
into the purge bin. Threshold values are stored in memory for each
value of currency being dispensed.
Divert Gate
1
The function of the divert gate is to route double or damaged bills
into the purge bin. It is located just before the exit shafts of the
transport. The gate assembly is operated by a solenoid and a photo-
sensor is used to detect a flag on the solenoid link drive arm so that
the gate position is known. The operation of the divert gate is timed
from the leading edge of the bill as it leaves the LVDT.
Exit Sensor
1
The exit sensor is located at the last shaft of the transport. The
sensor verifies that bills have passed the divert gate and have left
the last pinch of the transport on their way to the customer access
tray.
master.bk Page 17 Wednesday, March 27, 2002 9:35 AM