NRI G-13.mft MDB/S1 User manual

Technical Documentation
National Rejectors, Inc. GmbH • Zum Fruchthof 6 • D-2 6 4 Buxtehude
Phone: [phone] • Fax: [phone] • E-mail: [email protected] • Internet: www.nri.de
CRANE
07.04 Hns/ds
Edition .0
BA.G 3MFTMDBS -GB
Electronic coin validator
G-13.mft MDB/S1 (from model /4 on)
perating instructions

G- 3.mft MDB/S TABLE OF CONTENTS
3
National Rejectors, Inc. GmbH, Buxtehude
Table of contents
1 General information 7
General information about these instructions 7
General information about the coin validator G- 3.mft
with MDB/S interface 8
Advantages 9
Models 9
2 Safety instructions 10
Proper use 0
Protecting yourself and equipment
3 Design 12
Switching blocks 4
Switch assignment with double block
data-management (B-0 and B- ) 4
Switch assignment with single block
data-management 5
Return lever and return button 5
Interfaces 6
Interface – vending machine 6
Interface – configuration (WinEMP/PalmEMP2) 7
Interface – external sorting device 7
Label 8

TABLE OF CONTENTS G- 3.mft MDB/S
4National Rejectors, Inc. GmbH, Buxtehude
4 Function 19
Coin acceptance and coin rejection 9
Coin channels 20
Single or double block data-management 2
Accepted coin sensors 2
Control for external sorting of accepted coins 22
Sorting principle 22
Sorting with NRI sorting device 23
Sorting time of an external sorting device 23
Do not accept coin types 24
Inhibit all/individual coin types via vending machine
control system 24
Inhibit individual coin types/coin type groups on the
coin validator 24
5 Starting up 25
Starting up in the vending machine 26
Device environment for configuration software (WinEMP)27
Connection to Palm handheld (PalmEMP2) 27
Installation of the NRI sorting device ... 28
... on the top entry model 28
... on the front entry model 30
6 peration 31
Inhibit coin channels ... 3
... with double block data-management (B-0 and B- ) 3
... with single block data-management 33
Teach mode 35
Switch assignment with double block
data-management (in teach mode) 35
Switch assignment with single block
data-management (in teach mode) 35
Teach coin channels 36
Select memory block
(only for double block data-management) 37
7 Cleaning 38

G- 3.mft MDB/S TABLE OF CONTENTS
5
National Rejectors, Inc. GmbH, Buxtehude
8 Which functions can be set using WinEMP/
PalmEMP2? 39
9 Technical data 40
CE certification 4
Pin assignment and connection diagrams 42
G- 3.mft – vending machine 42
G- 3.mft – external sorting device 44
Commands, status and error messages 45
Implemented MDB commands 45
MDB status and error codes (reply to poll) 45
Implemented S commands 46
S status and error codes (reply to poll) 46
S standard settings (following reset) 46
Mounting dimensions 47
Top entry model 47
View from front 47
View from rear 47
View from above 48
View from below 48
View from the side 49
Front entry model without front plate 50
View from front 50
View from rear 50
View from above 5
View from below 5
View from the side 52
Front entry model with MIDI front plate 53
View from front and rear 53
View from right 54
Front entry model with MINI front plate 55
View from front and rear 55
View from right 56
Accessories 57
Front plates 57
Sorting device ... 58
... for top entry model 58
... for front entry model 58
Configuration software 59
Index 60
Glossary 63

G- 3.mft MDB/S INTRODUCTION
7
National Rejectors, Inc. GmbH, Buxtehude
1 General information
This chapter should provide a general overview of the advantages and
options regarding the coin validator G- 3.mft with serial MDB or S interface.
The first section, however, is designed to help you navigate easily within
these operating instructions.
General information about these instructions
These operating instructions describe the design and operation of the
electronic coin validator G- 3.mft with serial MDB or S interface. Chapters
5 und 6 explain the necessary steps for starting up and operating the coin
validator. The index and glossary shorten the search for specific explanations.
To make it easier for you to navigate within these instructions and to operate
the device, the following accentuations were made in the text:
•Safety instructions, which have to be taken note of in order to
protect operators and equipment, have been written in bold and given
the pictogram .
• Special notes, which are to facilitate the use of the coin validator, have
been written in italics and also been given a pictogram .
•Requests to perform an action are numbered in another typeface.
• At the beginning of a chapter you will find a short "guide", which
summarizes the content of the chapter.
To configure and test the coin validator reference is made to the separate
operating instructions of the NRI PC software "WinEMP", of the NRI Palm
handheld software "PalmEMP2" and of the NRI tester (refer also to Chap. 8
"Which functions can be set using WinEMP/PalmEMP2?"):
• WinEMP – The configuration and diagnostics program for NRI coin
validators, operating instructions for the G- 3.mft
• PalmEMP2 – Operating instructions for configuration of the coin
validator G- 3.mft
• Tester G- 9.064
If these instructions are not available to you, they can be
downloaded at any time from the NRI homepage (www.nri.de) in a
compressed PD format.

INTRODUCTION G- 3.mft MDB/S
8National Rejectors, Inc. GmbH, Buxtehude
General information about the coin validator G-13.mft
with MDB/S1 interface
The electronic coin validator G- 3.mft (multi-frequency technology) in
standardized 3 /2" format is based on the tried and tested features of the
G- 3.6000. Due to its modular and compact design, the G- 3.mft is ideally
suited for amusement, vending and service machines.
The multi-frequency technology is new in the G- 3.mft. It provides more
flexibility for the measuring sensors, multiple scanning of the coins inserted
for optimum material recognition and evaluation of 24 measuring parameters
for reliable acceptance of genuine coins and separating out of false coins.
Thanks to the coin validator’s flash technology software downloads to
adapt the measuring technology, coin data and control software can be
executed quickly and simply. The G- 3.mft has 32 coin channels that can
be data-managed, starting from device model /4 and higher, either in a single
memory block or, when divided in 2 x 6 coin channels, in two memory
blocks with different coin configurations.
To be able to react as quickly as possible to new false coins and to enable
you to make your individual adjustments, the coin validator can be connected
to a PC programming station which is made up of the configuration and
diagnostics software "WinEMP" including card reader and the tester
G- 9.064 . With the aid of the Palm handheld software "PalmEMP2" you
can configure the coin validator directly at the machine independently of the
PC.
Coins that have not been taken into consideration at the manufacturer’s
company can be programmed in the optional teach mode directly at the coin
validator by inserting coins.

G- 3.mft MDB/S INTRODUCTION
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National Rejectors, Inc. GmbH, Buxtehude
Advantages
• Acceptance speed of 2 coins per second
• Coin channels that can be inhibited individually or in groups
• Teach mode for 8 coin channels
• Operating and manipulation safety provided by optical accepted coin
sensors in the coin outlet area
• Interface for connection to a programming station or Palm handheld
which makes immediate reaction to the use of false coins possible
• Multi-frequency technology for reliable coin recognition
• Flash technology for uncomplicated and time-saving firmware
updates
• Optional sensor for increased protection against manipulation in the
cash-box chute
Models
The G- 3.mft is available as an MDB model and as an S model. The S
protocol is an MDB protocol specified for NRI coin validators and differs from
the standard MDB protocol with respect to commands and restrictions for
mains supply and sorting.
Both models of the G- 3.mft are available with top or front entry. The
G- 3.mft with front entry usually has a MIDI front plate or a MINI front plate
fitted to the left-hand side of the device (see Chap. 3 "Design"). The device
is, however, also available as a front entry model without front plate.

SAFETY INSTRUCTIONS G- 3.mft MDB/S
0 National Rejectors, Inc. GmbH, Buxtehude
2 Safety instructions
Before operating the device for the first time, please read through these
instructions carefully at least once, and most importantly the safety
instructions. This is to ensure you have understood the contents of these
instructions as well as how to operate the coin validator.
Proper use
Series G- 3.mft coin validators with MDB or S interface are intended to be
used in amusement, vending and service machines with an MDB or S
interface and are supposed to check the coins inserted in the machines for
specific coin properties.
These coin validators have been constructed in compliance with the state
of the art and recognized safety regulations. Nevertheless this equipment
can be a source of danger. Therefore please observe the following safety
regulations.

G- 3.mft MDB/S SAFETY INSTRUCTIONS
National Rejectors, Inc. GmbH, Buxtehude
Protecting yourself and equipment
The coin validator may only be connected by a qualified
electrician.
nly use the coin validator according to proper use. Under no
circumstances can the manufacturer be held liable for any
damage or loss resulting from improper use of the device.
The coin validator PCB is fitted with components which may
be damaged beyond repair by electrostatic discharge. Please
observe the handling instructions for components exposed to
the risk of electrostatic discharge.
Pull out the vending machine’s mains plug before you install,
clean or remove the coin validator.
Select the correct voltage for the coin validator (see label).
Ensure the correct potential equalization in the vending
machine.
Never pull the connecting cable of the coin validator from the
vending machine when a voltage is applied.
Contact NRI if you wish to alter the construction of the device
to a greater extent than that described in these instructions.
Keep water and other liquids away from the coin validator.
If the device is no longer required, please dispose of it
correctly.
We reserve the right to make technical modifications to the
device which are not covered by these instructions.

DESIGN G- 3.mft MDB/S
2 National Rejectors, Inc. GmbH, Buxtehude
3 Design
2
1
3
4
5
7Interface – vending machine, cctalk
(not assigned)
8Interface – vending machine
9Interface – external sorting
10 Interface –
PC programming station (WinEMP)/
Palm handheld (PalmEMP2)
1Return lever
2Coin insert funnel
3Mounting studs
4Coin outlet – return area
5Coin outlet – cash-box
6Switching blocks
Fig. 1a: Design – G- 3.mft, top entry model
3
3
2
1
8
10 9
3
3
3
7
6

G- 3.mft MDB/S DESIGN
3
National Rejectors, Inc. GmbH, Buxtehude
Fig. 1b: Design – G- 3.mft, front entry model with front plate
7Interface – vending machine, cctalk
(not assigned)
8Interface – vending machine
9Interface – external sorting
10 Interface –
PC programming station (WinEMP)/
Palm handheld (PalmEMP2)
1Return button
2Coin insert funnel
3Mounting studs
4Coin outlet – cash-box
5Coin outlet – return area
6Switching blocks
3
2
5
5
5
1
1
4
MIDI
MINI
8
10 9
3
3
3
7
6

DESIGN G- 3.mft MDB/S
4 National Rejectors, Inc. GmbH, Buxtehude
Coins inserted into the coin validator pass through the coin insert funnel 2
into the measurement and validation area of the device, in which their coin
properties are compared with the values of the stored acceptance bands.
Coins rejected by the coin validator pass into the return area 4, Fig. a/5,
Fig. b, and coins accepted for sale leave the device through the coin
outlet 5, Fig. a/4, Fig. b, and are fed into the cash-box or an external
sorting device. (See Fig. a and b)
Switching blocks
On the rear, the coin validator is equipped with
two switching blocks with 0 DIL switches
S . - 0 and S2. - 0 each.
Depending whether your device was programmed for coin data-management
according to a factory-made setting for one or two memory blocks (B-0 and
B- , see label), the DIL switches will have different functions (see also
section "Single or double block data-management" in Chap. 4 "Function").
On the rear of the device you will find a brief description of the
individual switch functions.
Switch assignment with double block data-management (B-0 and B-1)
Coin channels or the coin types assigned to the coin channels can be
individually inhibited using the first eight DIL switches of the upper switching
block S and the lower switching block S2 (see section "Inhibit coin
channels" in Chap. 6 "Operation").
The ninth DIL switch of the upper switching block S does not have any
function.
The tenth DIL switch of the upper switching block S is used to select the
memory block (see section "Select memory block" in Chap. 6 "Operation").
The lower switching block S2 is used to teach coin types or tokens in the
teach mode (see section "Teach mode" in Chap. 6 "Operation").
S
S2

G- 3.mft MDB/S DESIGN
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National Rejectors, Inc. GmbH, Buxtehude
Switch assignment with single block data-management
Coin channels or the coin types assigned to the coin channels can be
inhibited using the first eight DIL switches of the upper switching block S .
To do this the DIL switches are assigned a coin channel randomly. A group
of selected coin channels can be assigned to a switch to inhibit a number
of coin channels (see section "Inhibit coin channels" in Chap. 6 "Operation").
The ninth and tenth DIL switches of the upper switching block S do not have
any function.
The lower switching block S2 is used to teach coin types or tokens in the
teach mode (see section "Teach mode" in Chap. 6 "Operation") and to inhibit
these taught coins in the normal operating mode.
Return lever and return button
The return lever (1, Fig. a) on the top of the device is operated using the
return button on the vending machine if the coins which have already been
inserted are to be returned or a jam caused, e.g., by coins which have
become stuck needs to be removed. Operating the return lever opens the
measurement and validation area of the coin validator so that all objects in
the coin validator are transported into the return area.
Devices with front entry through a front plate do not have a return lever. Here
the measurement and validation area is opened by pressing the return
button (1, Fig. b) on the front plate.

DESIGN G- 3.mft MDB/S
6 National Rejectors, Inc. GmbH, Buxtehude
Interfaces
At the bottom right-hand side on the rear of the coin validator there is a
0-pole connecting plug to the vending machine, and on the left-hand side
at the centre there is a 3-pole JST plug for connecting an external sorting
device. On the left-hand side, there is the interface to the PC programming
station and the Palm handheld. (See Fig. a and b)
Interface – vending machine
The coin validator is connected to the machine via the serial MDB interface 8
(see Fig. a and b) and a 0-pole cable via which it can receive information
from the vending machine or send information to the vending machine. The
machine operates as a master and the G- 3.mft as a slave. The master can
communicate with several slaves (e.g. coin and bill validator). To ensure
unambiguous communication each device has its own MDB address. The
address of the G- 3.mft as an MDB model is "0 ", and " 5" as an S model.
The G-13.mft as an MDB model does not fulfil the MDB specification
on two counts, i.e. the specified voltage range and the electrical
isolation of the communication lines.
If a supply voltage of 42 V max. and electrical isolation are
desirable, an MDB converter G-55.0360 can be ordered from NRI
(ordering code 23627).
You can obtain further information about the MDB and S interface:
• in the "NAMA document MDB/ICP 2.0" (www.vending.org) and
• in the NRI S specification for the G-40 S , which will be placed at
your disposal upon your request.
You will find a list of the commands implemented in the G-13.mft in
Chap. 9 "Technical data".
Please refer to the section "Pin assignment and connection
diagrams" also included in Chap. 9 "Technical data" for more details
on the assignment of individual plugs (pins).

G- 3.mft MDB/S DESIGN
7
National Rejectors, Inc. GmbH, Buxtehude
Interface – configuration (WinEMP/PalmEMP2)
To configure the coin validator the device is connected to a PC or a mobile
Palm handheld. For this purpose the G- 3.mft has on the right-hand side a
0-pole PCB direct plug 10 (see Fig. a und b), which can be used to
connect the coin validator to the PC via a tester and card reader or to a Palm
handheld (see Chap. 5 "Starting up"). The device is set by means of the
configuration and diagnostics software WinEMP or PalmEMP2 (see separate
software instructions).
Interface – external sorting device
On the rear of the device, there is a 3-pole JST plug 9 (see Fig. a and b).
This plug can be used to control sorting gates for sorting inserted coins (see
sections "Control for external sorting of accepted coins" in Chap. 4 "Function"
and "Pin assignment and connection diagrams" in Chap. 9 "Technical
data").
The 3-pole sorting plug is made by the JST company and has the
type designation "ZH connector", 1.5 mm. You can obtain further
information about the plug at the Internet address www.JST.com.

DESIGN G- 3.mft MDB/S
8 National Rejectors, Inc. GmbH, Buxtehude
8Nominal voltage
9Bar code
10 Date of manufacture
11 Consecutive device number per order
number
12 Ordering code
13 Order number
14 Device model
15 Data block number and revision
number
16 Device type
9B = Front entry model without front plate
8B = Front entry model with MINI front plate
7B = Front entry model with MIDI front plate
6B = Top entry model
Fig. 2: Label
2 3 4
902
3
4
6
8
5 6 7
5
Label
The label of the coin validator contains all the data defining the device such
as device series, device type and device operation as well as customer-
specific default values such as coin type and currency:
1Coin information – memory block 0
(if DIL switch S . 0 on OFF)
2Currency and coin type – memory
block 0
3Channel number, normal coin
channel – memory block 0
4Channel number, narrow coin channel
– memory block 0
5Channel number, very narrow coin
channel – memory block 0
6not assigned
7Coin information – memory block
(if DIL switch S . 0 on ON)

G- 3.mft MDB/S FUNCTION
9
National Rejectors, Inc. GmbH, Buxtehude
4 Function
This chapter describes how the coin validator works, using the route which
an inserted coin takes in the coin validator:
• Coin acceptance and coin rejection
• Coin channels
• Single or double block data-management
• Accepted coin sensors
• Optional string recognition
• Control for external sorting device
• Inhibit coin acceptance
Coin acceptance and coin rejection
Coins inserted into the coin validator pass inductive and optical sensors
which check the coins and there they generate individual measurement
values. Due to the special design and arrangement of these sensors, each
coin is checked for its material properties and dimensions. An upper limit
and a lower limit are stored for each coin type, a so-called acceptance band
so that the coin validator knows whether to accept a coin or not. If the
measured values or the coin are within the acceptance band, the coin is
accepted for sale when it has passed the acceptance gate and accepted
coin sensors, but if they are outside the band, it is rejected and directed into
the return area.
The limit values of the acceptance bands are programmed by the
manufacturer according to the customers’ specifications, but can be
adjusted with the WinEMP PC configuration software or PalmEMP2.
ollowing a reset operation, the coin acceptance function is disabled
and must be enabled again by the vending machine.
As a standard feature, the G-13.mft refuses each further
acceptance of a coin if the G-13.mft has not been activated by the
vending machine within the last 2 seconds or if the last accepted
coin has not yet been scanned by the vending machine.

FUNCTION G- 3.mft MDB/S
20 National Rejectors, Inc. GmbH, Buxtehude
Coin channels
The coin validator has 32 "memory slots" for coin acceptance which can be
assigned up to 32 different coin types or tokens. These "memory slots" are
termed coin channels. The acceptance band of a coin type/token is allocated
to a coin channel and the coin type/token is accepted in that channel.
In order to reject false coins reliably, frequently for one coin type, in addition to
the normal coin channel, channels with a narrow or even very narrow
acceptance band are set up (see section "Label" in Chap. 3 "Design"). The
limit values of these coin channels are closer to one another so that false coins
with similar measured values are rejected. Narrow and very narrow coin
channels, however, also possess a lower acceptance rate.
In addition, it is possible to allocate coins with different measured values but
identical coin values to different coin channels. This is how the coin validator
can, for example, accept old and new coins of the same type.
However, a coin channel is not only assigned the acceptance band of a coin
type but also other coin information which defines further processing of the
coin after its acceptance: e.g. coin value or sorting information for an
external sorting device.
Since in most cases the manufacturer’s customer-specific programming
does not take up all the coin channels, channels which are still vacant can
be assigned coin types and further information desired at any time using the
WinEMP PC configuration software or PalmEMP2. Existing configurations
can be changed.
The last eight coin channels 25 to 32 (or 9 to 6 with double block data-
management, see section "Single or double block data-management" in
this chapter) are intended to be used for the teach mode. In these coin
channels new coin types can also be taught without configuration software,
directly via the lower switching block on the coin validator; i.e. a coin channel
is re-assigned a coin type or also a token (see section "Teach mode" in
Chap. 6 "Operation").