Page 19CWT Compact S4 Touch Installation & Maintenance Manual for CWT 1.0-0Issue 3
Product description
Figure 4, Antipin inside view. CWTC S4 door
A slightly inclined trap door, operated by a solenoid plunger, is held in opened
(clock-wise) position by a permanent magnet inside the solenoid across which no
voltage is currently applied (the above figure shows the trap door in its closed
position).
The figure below illustrates the mechanism in idle mode before any metal object is
detected in the coin slot. The barrier plate is kept closed by a compression spring
and the trap door is in the open position.
CWT016 R3
Coin unit
Trap door
Coin slot
Metal-detector
coils
Barrier plate
Coin verifier
Scrap channel
Figure 5, Anti pin in idle mode. The barrier plate covers the coin slot opening and the
trap door rests in open position.
When a metal object is detected by the detector coils, a voltage is temporarily
applied across a separate coil in the solenoid which generates a magnetic field
that repulses the field of the permanent magnet. The trap door now rotates anti-
clockwise pulled by a tension spring mounted on the solenoid plunger. The trap
door also forces the barrier plate to the right to allow the metal object to be fully
inserted. See figure below.
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