3 Other operating modes of the G-18.mft - NRI

G-18.mft with vending machine control system DESIGN
The additional control PCB
7
8a 8b8c 8d 8e
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).
National Rejectors, Inc. GmbH, Buxtehude
Fig. 1c: Design – additional control PCB
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
For details regarding pin assignment, see section "Pin assignment
and connection diagrams" in Chap. 10 "Technical data".
Button and switches (additional control PCB)
1a 1b
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").
6
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
The button and switches can be disabled for normal operation (see
section "Disabling price and test switches/button in Chap. 7
"Operation").
5
4
12
2
3
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