G-18.mft with vending machine control system
D
ESIGN
21
National Rejectors, Inc. GmbH, Buxtehude
The additional control PCB
Interfaces (additional control PCB)
On the additional control PCB, there are, in addition to the two interfaces
1a
and
1b
to the coin validator, all the interfaces
4
to
8
to the vending machine
components that are relevant for the control system (see Fig. 1c).
For details regarding pin assignment, see section "Pin assignment
and connection diagrams" in Chap. 10 "Technical data".
Button and switches (additional control PCB)
Button
3
is used to perform an automatic run of the vending machine
functions such as escrow, selection buttons, pilot lights, product ejectors
and motorized return mechanism before starting up the device (see Chap. 6
"Starting up") and to reset the error messages stored in the coin validator
that inhibit the further acceptance of coins or disable the selection buttons
(see Chap. 11 "Troubleshooting").
The lower of the two DIL switches
2
is used for the manual testing of all
contacts of the vending functions such as escrow, selection buttons,
product ejectors and motorized return mechanism (see Chap. 11
"Troubleshooting").
The upper DIL switch can be used to set up to five prices for up to five
different products (see section "Set the prices" in Chap. 6 "Starting up").
The button and switches can be disabled for normal operation (see
section "Disabling price and test switches/button in Chap. 7
"Operation").
Fig. 1c:
Design – additional control PCB
12
1a
1b
2
3
4
5
6
7
8a
8b8c
8d
8e
7
Interface – selection buttons and pilot
lights in vending machine door
8a
Interface – product ejector 1
8b
Interface – product ejector 2
8c
Interface – product ejector 3
8d
Interface – product ejector 4
8e
Interface – product ejector 5
1a
Interface (14-pole) – G-18.mft
1b
Interface (6-pole) – G-18.mft
2
DIL switch 1 (lower) and
2 (upper)
3
Button
4
Interface – escrow
5
Interface – return mechanism
6
Interface – battery
