Logic Mode Anti-Jam Operation - Suzohapp CUBE HOPPER MKII Instruction And Service Manual

Intelligent Cube Hopper MKII

4.7. Logic mode anti-jam operation

If the hopper for some reason blocks (jams) the motor current will rise fast. When the current exceeds
a certain trip level (around 1.6 Amp), the motor will be reversed for T_clear ms. This is done to
withdraw any coins from the coin exit port that may have caused the block.
After the first reverse period the hopper is started again. If the hopper still blocks the motor will be
reversed for T_jamrev ms, and started again. This procedure is repeated until the hopper starts
ejecting coins again. If the jam is not cleared, the motor will stop due to its thermal fuse protection.
Any coin-sensor level changes during the anti-jamming procedure are discarded.
See timing figure below.
Clear coin exit port
Forward
Motor Stopped
Reverse
Coin-Sensor (NC)
Coin Exit (pin 6)
Jam occurs here
Figure 5: Anti-Jam timing in logic mode
Try to payout again
T_clear
coin enters exit port
Hopper still jammed
Page 12
Anti-Jam
T_jamrev
coin withdrawn fromexit
Discard false pulse
Rev 2.0
port