Technical data

Technical Manual EMP 8x0.00/04/13 v5 wh Münzprüfer Dietmar Trenner GmbH, Germany
Version 1.51
Page 24/42 subject to technical modification EMP8x0.00/04/13 v5
2.10 Safety Features
2.10.1 Coin on a String (Strimming)
The EMP 800 v5 is equipped with multiple safety functions to prevent almost every
coin-on-a-string manipulation.
As an additional security the coin selector can signal attempts of manipulation to
the machine controller. It is also possible to block coin acceptance for a
programmed time in order to make further attempts of manipulation more difficult.
Even if the coin selector is in standby mode, the light barriers are still live
(continuous operation only). If the light barrier detects a coin in the acceptance
channel which has not previously passed the measuring system in the correct way,
the coin selector will assume that this coin, for which a receipt has been
transmitted, is being pulled back on a thread. Via the parallel interface, the coin
selector can give a message for coin-on-a-thread-detection to the machine. The
customer can choose any of the coin output channels or a combination of
channels through which the coin-on-a-thread detection is to be signalled. This can
be programmed by the factory. The information is emitted by a minimum impulse
width of 200 ms. The machine is able to distinguish between coin-on-a-thread
detection and a normal receipt signal, as it can recognise the different width and
(or) identify a combination of simultaneously arranged coin output lines.
The message "coin-on-a-thread" is also transmitted via serial SCI, MDB and cctalk
interface (see chapter 3.2 and 3.3).
If a coin is still identified in the light barrier after 200 ms have passed, the
information will be repeated. During that time, no coin can be accepted.
2.10.2 Coin Jam
If the measuring system identifies a coin, but measuring is concluded via “timeout”
instead of the correct measuring procedure (coin leaves coin selector passing the
receipt light barrier or the return), this will be interpreted as “coin jamming”.
Via the parallel interface, the coin selector can give a signal for coin jamming to the
machine. The customer can choose any of the coin output channels or a
combination of channels through which coin jamming will be signalled. This can be
programmed by the factory. The information is emitted by a minimum impulse
width of 200 ms. The machine is able to distinguish between coin jamming and a
normal receipt signal, as it can recognise the different width and (or) identify a
combination of simultaneously arranged coin output lines.
The message "coin jam" is also transmitted via serial SCI, MDB and cctalk
interface (see chapter 3.2 and 3.3). The serial interface also allows the position of
the coin jam to be specified:
The following coin jam signals are possible:
- Coin jam 1 (in the measurement system)
- Coin jam 2 (between measurement system and reject light barrier), only option
/R
- Coin jam 3 (between measurement system and acceptance light barrier)
- Coin jam 4 (in the acceptance light barrier)
- Coin jam 5 (not possible with the EMP 800 v5)
- Coin jam 6 (in the reject light barrier) only option /R