w
h Münzprüfer Dietmar Trenner GmbH, Germany
Technical Manual EMP 500.xx v4
Version 1.51
EMP8x0.00/04/13 v4
subject to technical modification
page 15/27
2.4.
Coin Blocking
Coin blocking may be accomplished in various ways. One possibility is the general
blocking input line, which will block the coin selector from accepting all coins.
Secondly, it is possible is to block coins or groups of coins individually through 16
DIP blocking switches on the coin selector. The DIP blocking switches are
accessible through a recess in the coin selector cover.
2.4.1.
General Blocking (Option /M)
The EMP 500 v4 has a potential-free infrared optocoupler at its disposal for the
general blocking. The inhibit voltage depends on the coin selector hardware and
lies between 12 and 230 V AC/DC. It is standard that the coin selector is blocked
when the infrared optocoupler is powered up. This is known as “general blocking
via low” for the coin selector programming with wheasy2.
The signal polarity of the blocking line is programmable. The programming can be
carried out using
w
heasy 2 under the menu selection “Configuration“. Select “B-
Values”, select the register tab “Mode.“ This tab, among other things, has a check
box for “Main blocking with 0” and “Main blocking with an open input.” The
following table shows the possible combinations of the above two options.
selected check box
Infrared optocoupler input
general blocking
with “0“
general blocking with
an open input
powered
not powered
X
X
X
Table 1
The function of general blocking in relationship to the programmed
mode of the coin selector
As the EMP 500 v4 has an infrared optocoupler only the two recommended
settings are shown in Table 1.
Note:
Please inform us when ordering if the inhibit voltage is to be at 115 V
or 230 V otherwise it must be ensured that on the coin-operated
machine the current is limited from 1 mA to 10 mA.
2.4.2.
Individual Coin Blocking via DIP switches
The coin selector has 16 DIP switches for individual coin blocking. Blocking is not
active, that is, the coin will be accepted when the switch is in the “OFF” position. A
coin will be rejected when the switch is “ON”.
The 16 switches can be freely assigned to the 32 coin channels. Each coin
channel can be associated with two switches. This configuration makes it possible
to block individual coins or, if multiple currencies are programmed, it is possible to
block a whole currency with one switch. For example 12 individual coins can be
assigned to the first 12 switches. Then switch 13 to 16 can be used to block whole
currencies. This optimal use of the switches allows the easy selection of one
currency or even multiple currencies at the same time.
The following figure illustrates the assignment of blocking switches and also the
numeric identity of each switch.
