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Owner's of the ADC Clothes Dryer AD-410 gave it a score of 0 out of 5. Here's how the scores stacked up:
87
b) The expansion PLC (Programmable Logic Controller) module has eight (8) inputs which are
labeled #10 through #17 and an six (6) output relays labeled #210 through #215.
(1) Input Relays
A fan on or off signal (input #10) determines if the dryer is operating. If the dryer is operating,
the door function and tilt function shut down. Input #11 "HEATER FAULT RESET" monitors
the "HEATER FAULT" reset push-button. Input #12 monitors the heat "ON" status. Input
#13 monitors the "Gas Valve" status. Input #11, input #12, and input #13 are used to monitor
the "HEATER FAULT" circuit. On dryer models with front and back doors rear door open/
closed, or various other functions may be used (refer to blueprints for specific information/
details).
Input #14 indicates that the drying cycle is done (air jet signal). Once the output relay of the
Phase 5 microprocessor controller (computer) turns on contact relay #4, input #14 is turned
on. This in turn signals the PLC to illuminate the "END OF CYCLE" (E.O.C.) L.E.D. (light
emitting diode) until the dryer is attended to.
Front door closed (input #15) is a safety circuit used to lock out the Phase 5 microprocessor
controller (computer) from a drying cycle unless the doors are closed.
The front down/rear down (dryer level) is another safety device used so that a drying cycle
cannot be initiated unless the dryer is in the level position.
(2) Output Relays
Output relay #210 controls the air supply to the top of the pneumatic piston to tilt the front of
the dryer down.
Output relay #211 controls the air supply to the bottom of the pneumatic pistons to tilt the
front of the dryer up, provided that the rear of the dryer is in the level position.
Output relay #212 controls the fan for the "HEATER FAULT" cool down routine and is
controlled by microprocessor (computer) Pin #5.
Output relay #213 controls the air supply to the top of the pneumatic pistons to tilt the rear of
the dryer down.
Output relay #214 controls the air supply to the bottom of the pneumatic pistons to tilt the
rear of the dryer. Rear up (output relay #214) applies power to the S6 rear up solenoid
through the front down level switch (LS1B).
The dryer "CLEAR/STOP" output (relay #215) is used to lock out the Phase 5 microprocessor
(computer) from running a drying cycle. If the PLC (Programmable Logic Controller) has in-
put #4 (front door open) and input #10 (blower [squirrel cage fan] on, or input #16 (lint door
closed), input #15 (front door closed), or input #17 (dryer level) are off, then the PLC will close
output relay #215 (dryer "CLEAR/STOP") so that a drying cycle cannot be initiated.
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