F
UNCTION
G-13.mft standard/Casino/SGI/BDTA/AMU
18
National Rejectors, Inc. GmbH, Buxtehude
4
Function
This chapter describes how the coin validator works:
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Coin acceptance and coin channels
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Single or double block data-management
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Accepted coin sensors
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Coin impulses and coin signal lines
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Control for external sorting device
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Coin inhibition
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Teach mode
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Battery/low-power applications (optional)
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High-voltage up to 42 V (optional)
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Inverted common inhibit signal line (optional)
Coin acceptance and 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 money 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, if the normal coin channel is
inhibited (see section "Inhibiting coins/activating narrow coin channel" in
Chap. 6 "Operation"). 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 signal line and coin impulse number,
inhibit information, sort information for an external sorting device.
Summary of Contents for NRI G-13.mft Standard
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