C120S Technical Manual TSP093.doc Issue 1.2 – January 2005
Money Controls 2005. All rights reserved.
Page 4 of 15
2. Introduction
2.1. Scope
This document specifies a coin validator, C120S, for use in payphone applications. The
power to operate the payphone is typically derived from the telephone line, requiring the
C120S to consume the minimum power possible.
The C120S is capable of accepting up to 16 different coin types of any denomination. The
coin set data can be remotely downloaded via the payphone controller interface.
The C120S operates over the environmental conditions specified in Section
2.2. General
A coin reject mechanism is provided, which will open the C120S to allow coin jams or foreign
debris to be cleared and fall into the reject chute.
The C120S operates to specification when fitted in an appropriate channel within 3 degrees
to the vertical in any plane.
While the C120S is inactive, it enters a low power mode. A coin entered into the system or a
message sent over the serial interface causes the C120S to power up, validate the coin or
process the message, then return to the low power mode.
If no power is applied to the C120S, any coins inserted are returned to the user via a reject
chute.
Accepted coins are directed to a coin store or cashbox using a solenoid driven gate and
rejected coins to a reject chute.
