Dispenser Functional Description
Dispense Operation
NCR 5635 Spray Currency Dispenser Service Manual
1-23
NCR - CONFIDENTIAL AND PROPRIETARY
Use pursuant to Company Instructions
4
The selected pick module picks a bill which is fed through the
module pick sensor to the transport section. The bill is detected
by the pick sensor as it enters the pick module transport. It
travels up to the spray presenter where it causes a deflection of
the movable roller of the LVDT. The sudden rise in the
monitored voltage waveform from the LVDT shows that a bill
has arrived at the rollers and starts a “picked bill” reading. This
reading is integrated and a stored reading, taken earlier, from
the rollers without a bill present, is subtracted from it. The
difference between the two readings represents the cross-
sectional area (CSA) of the bill. This CSA reading is compared
to a table representing single, double, and triple bills for the
specific currency.
5
The picked bill is transported from the LVDT to the divert gate
where:
a
If the bill is good, the divert solenoid is energized allowing
the gate to pass the bill through the exit sensor to the
customer access tray. The solenoid remains energized as
long as good bills are sensed.
b
If the bill is bad, the solenoid de-energizes causing the gate
to divert the bill into the purge bin.
As the picked bill travels through the dispenser, its passage is
monitored by the pick sensor, LVDT, and exit sensor. These sensors
control the following jam timers:
●
Time under pick sensor
●
Time from pick sensor to LVDT
●
Time under LVDT
●
Time from LVDT to exit sensor
●
Time under exit sensor.
If any predetermined bill passage time is exceeded, a jam is deemed
to have occurred and the operation is terminated with an error
indication.
The process of picking bills is repeated until the bill count of good
bills at the LVDT equals the dispense command bill count. A status
message is transmitted to the PC core.
master.bk Page 23 Wednesday, March 27, 2002 9:35 AM
