C120S Technical Manual TSP093.doc Issue 1.2 – January 2005
Money Controls 2005. All rights reserved.
Page 8 of 15
4. Mechanical
Specification
4.1. External
Dimensions / Mechanical Interfaces
The space envelope, coin entry and exit positions, together with the mounting details are
detailed in
4.2. Orientation:-
The C120S may be orientated at ±3
o
in any plane from nominal without affecting coin accept
rates.
4.3. Acceptance
Rates
The C120S is capable of accepting coins at a rate of two coins per second on “normal” round
coins. Coins entered at faster rates may be rejected due to 2
nd
close coin errors, which may
jeopardise the 88% coin acceptance rate. Coin acceptance is inhibited following a successful
validation until the Host controller has acknowledged the previous acceptance message, or a
timeout condition has occurred. The timeout is nominally 50ms. A timer will be available to
slow the accept rate further if the system [payphone] demands it. Coins inserted quickly
should be able to be cleared quickly, without a coin jam arising.
In addition to the standard security windows, other window types may be generated which
provide higher security over both standard and extended temperature ranges.
The actual acceptance rates shall be determined on development of each coin set and shall
be defined in the individual coin set specification. The C120S accepts up to 16 different coin
types and the parameters for these are stored within the mech. in a non-volatile memory. It is
possible to download new or amended data from the Host controller or alternative
programming equipment, via the serial link.
4.4. Accept
gate
The coin accept gate is operated by a low powered solenoid to minimise energy use. The
default coin path with the solenoid de-energised is to reject the coin.
