American Dryer Corp MLS-460 manual LS-460 Idling LS-460 Running

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G. PLC (Programmable Logic Controller) ERROR MESSAGES

The MLS-460 diagnostics messages have been provides to aid troubleshooters in diagnosing and repairing dryer problems. The messages are intended to direct one to a particular fault area for further testing; not to diagnose the machine for you.

NOTE: Not ALL MLS-460 dryer symptoms have faults messages.

The following information describes the action the MLS-460 will take while displaying a particular message.

ERROR M ESSAGES	M LS-460 IDLING	M LS-460 RUNNING

CTRL VOLT OFF	Cannot operate machine	Stops dryer

INTAKE	Cannot operate machine	Stops dryer

EXHAUST DSFL	Cannot operate machine	Stops dryer

DOOR OPEN	Cannot operate machine	Stops dryer

SCREEN FAULT	Cannot operate machine	Stops dryer

MOTOR FAULT	Cannot operate machine	Stops dryer

GAS FAULT	Not Applicable	Burner Controller stops heat

AIR FAULT	Not Applicable	Burner Controller stops heat

HEATER FAULT	Not Applicable	Burner Controller stops heat

HI-TEMP FAULT	Not Applicable	Burner Controller stops heat

DRUM FAULT	Not Applicable	Burner Controller stops heat

LEVEL FAULT	Cannot operate machine	Stops dryer

LINE FAULTS*	Cannot operate machine	Cannot operate machine

*This message is generated by the operator terminal itself; it indicates that communication between the operator terminal and PLC (Programmable Logic Controller) have discontinued.

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Contents MLS-460 Installation/Operator’s Manual Retain This Manual In a Safe Place For Future Reference For Your Safety Page Table of Contents Power Malfunctions ServiceMotors Important Information SectionExplosion could Result Safety PrecautionsPage Specifications SPECIFICATIONS/DIMENSIONSDimensions Reassembly of Dryer Installation ProceduresReattach The Control Pendant Arm Reassembly Instructions For Dryers Shipped In Three 3 Pieces Page Location Requirements Air Front Tilt Piston and Sprinkler Lines Internal AIR, ELECTRICAL, and Water ConnectionsPage Electric Tumbler Basket Motors Temperature Probe, Base, and Tumbler Basket DisconnectsPage Pendant Left Drum Motor Tumbler Basket Junction Box DisconnectExternal Supply Connections Condensate return line must be 1-1/4 pipe Exhaust Ducting Page Electrical Requirements Electrical RequirementsLatest Edition MLS-460 Steam Electrical Service SpecificationsPage Fresh AIR Supply Requirements Steam Requirements Steam InformationShut Down Instructions Preparation for Operation PRE START-UPClean any lint accumulation from inside the heat console Routine MaintenanceCleaning Suggested Cleaning ScheduleMonthly Tumbler Basket Support and Drive System Component System DescriptionsPage Page Main AIR Blower and Heat Reclaimer System Heat Reclaimer Adjustment Remove Electricity from the Unit Compressed AIR System Page Safety Devices Door Open Service SERVICE/PARTS InformationParts Returning Warranty Parts Warranty InformationReturning Warranty Cards WarrantyPage Troubleshooting Table of Contents Number TroubleshootingVerify red Sprinkler Power on main panel to be illuminated Power MalfunctionsMain Disconnect Will Not Turn On If NO, refer to paragraph #1 above Sprinkler circuit may be defective Machine Main Power Shuts Down Blue Indicator OffSprinkler Circuit Components 3CR CRB Not UsedSprinkler Circuit Description Page Malfunctioning PLC Programmable Logic Controller Emergency Stop E-Stop Buttons 1, 2,Page General Description PLC Message HI-TEMP FaultPage Page Introduction Tumbler Basket Section Electrical MalfunctionsDrum Rotation Sensor PRS1 Rear Panel Control Problems Emergency Stop E-Stop Function If YES, refer to a If NO, refer to b PLC OUT PIN 1 = Drum Reverse PLC OUT PIN 2 = Drum Forward PLC OUT PIN 7 = Unload Door Open PLC OUT PIN 10 = Front UP DS1-B=LOAD Door Switch DS2-B=UNLOAD Door Switch Wiring Back the PLC Programmable Logic ControllerProbable Solutions Base Section Electrical Malfunctions Wiring Back to the PLC Programmable Logic Controller Lint Drawer Proximity SwitchesPage Probable Causes Tumbler Reverse Pendant --- PB2 Pendant Control MalfunctionsLoad Level Unload Tumbler Reverse Tumbler Forward SEL a = Load SEL B = UnloadTumbler Forward Pendant --- PB1 Wiring Diagram Fuse 4 on Main Electrical Panel Faulty SwitchesWiring Back to PLC Programmable Logic Controller MLS-460 Pendant Assembly DiagramDisconnect Plug Faulty Switch Wiring Back to TB1 Temperature SensingAnother Emergency Stop E-Stop Button Exhaust RTD Resistive Temperature Device Sens1 Temperature Sensing Component DescriptionsWith the control voltage OFF Motors Circuit Wiring to the Analog Input ModuleVerify current setting Check circuit Check motor Retest LS-460 Idling LS-460 Running ADC113073 1- 01/14/00-15