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Sterling STT 800 manual STT 3.1. Control system, Key assignment, Start-up

Models: STT 800

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STT 800

STT 800

3.1. Control system

The control system is switched on at the main switch. The control system is operated via a ”selection window” and the keyboard of the operator panel.

The facility’s control system is factory-programmed. Nevertheless, you have to set specific values (basic parameters) which are dependent on the processed material, for instance.

The values entered are stored in the control system and remain so, even after the unit is switched off or in the event of a power cut. All messages are displayed in plain text.

In describing this start-up, we have assumed that the various sub-menus are selected from the ”table of contents”.

This structure of the description has been selected since, in most cases, you will only work on one item in the ”submenu”.

If you want to work on several ”submenu” items in succession, you can select the individual items directly by means of the arrow keys.

3.1.1. Key assignment

F1-key:	Leads to the table of contents.
ENTER-key:	Confirms the entries.
ESC-key:	Goes back one step in the menu.
ACK-key:	Activates an alarm message; to unblock the control system.
Arrow keys:	Move the cursor bar;
	switch the appliances on or off in combination with the SHIFT key;
	for scrolling forward or backward in a menu.
SHIFT-key:	Switches on the secondary functions of the keys,
	when the SHIFT-key has been pushed, the LED “SHIFT” is on.
HELP-key:	Viewing additional texts,
	when additional texts can be viewed the LED “HELP” is on.
LED “ALARM”:	flashes in case of an error;
	is on if the error has been acknowledged but not yet
	eliminated; is off if there are no errors

&

SM2-625

LED = light emitting diode

An additional alarm device (horn or lamp) can be connected (optional).

Start-up 3-2

Image 17

Sterling STT 800 manual STT 3.1. Control system, Key assignment, Start-up

Contents

with Siemens S7 control unit Operating Instructions Dehumidified Air Dryer STTSterling Material Processing SM2-625Sales and Contracting Department Parts and Service DepartmentOrder confirmation number STT Sterling Material ProcessingEdition 06/02 Page TABLE OF CONTENTS Page Page General Information 1. General InformationDehumidified Air Dryer General Information Dehumidified Air Dryer 1.1. Warnings and symbols1.3. Legal basis 1.2. Explanations and information1.4. Fields of applications 1.5. Notes on UsageDehumidified Air Dryer 2. Safety instructionsSafety instructions General Dehumidified Air Dryer 2.1. For your safetySafety instructions Assembly Safety instructionsDehumidified Air Dryer OperationDehumidified Air Dryer Safety instructionsMaintenance Dehumidified Air Dryer 2.2. For the safety of the devicesSafety instructions Start-up 3. Start-upStart-up STT 3.1. Control system3.1.1. Key assignment Indicator lamp messages STT 3.1.2. Flow chartStart-up SM2-625Start-up STT 3.2. Switching on the dryer3.2.1. Operation statuses Start-up 3.4. PasswordsSTT 3.3. Viewing the software-version Start-up LoginLogout Edit3.5.1. Turning the devices on/off STT 3.5. Basic parametersTimer on/off Start-upHopper X on/off X = number of the drying hopper Start-upStart-up STT 3.5.2. Entering dryer valuesRegeneration Heater Act Used air ActPre air cooler Act Start-upPre air cooler Target Start-up STT 3.5.3. Entering hopper valuesHopper entry X Target Hopper entry X ActGranules act. CF Start-upGranules target % = C F Start-up STT 3.5.4. Observing processing statuse.g. valve block moved in/moved out/error Start-up STT 3.5.5. Setting date and timeDate TimeStart-up STT 3.5.6. Viewing/changing language and contrastContrast LanguageStart-up STT 3.5.7. Changing parametersSelect ”Parameters” Run on time drying blower --300 secXX ON 00 00 OFF 00 00 XX = day Mo-Su STT 3.5.8. Setting the timerStart-up Select ”Main menu” STT 3.6. Starting continuous operationStart-up Start-up STT 3.7. Viewing system runtimeSelect ”System runtime” System runtimeSwitch off the dryer at the main switch STT 3.8. Switching the dryer offDisconnect the power supply Start-upDehumidified Air Dryer 4. Error and error correctionError and error correction Dehumidified Air Dryer Error and error correctionFailures must be repaired immediately LED “ALARM” View Error and error correctionDehumidified Air Dryer Dehumidified Air Dryer Error and error correctionNumber Total messagesDehumidified Air Dryer Error and error correctionOverflow Overflow warning On/OffPLC = SPS Battery is Empty Error and error correctionMain Switch is Off A Safety Temperature Limiter has been ActivatedExcess Temperature Regeneration Heater Error and error correctionInsufficient Temperature Regeneration Heater Error Bypass FlapTemperature Measurement Drying Heater Defective Error and error correctionExcess Temperature Drying Heater Insufficient Temperature Drying HeaterTemperature Measurement Granules Defective Hopper Error and error correctionExcess Temperature Granules Hopper Valve Error HopperMaintenance 5. MaintenancePlease observe the maintenance schedule MaintenanceMaintenance STT 5.1. Maintenance intervalsMaintenance STT 5.2. Cleaning/renewing the air filtersReturn air filter MaintenanceRegeneration air filter MaintenanceRe-installthe cleaned/new filter mat MaintenanceFilter of the electrical cabinet Remove the lid of the filterMaintenance STT 5.3. Tensioning the V-beltsRemove the protective grid of the blower position MaintenanceMaintenance 5.5. Servicing the accessories5.4. Disposing of the drying agent Maintenance 5.6. Changing the battery of the control systemStore backup batteries in a dry and cool place MaintenanceOrder number battery SM2-625Maintenance STT 5.6.1. Resetting the control valuesFunctional description 6. Functional descriptionFunctional description STT 6.1. DryerDew point dependent regeneration switch optional Functional description STT 6.2. Drying hopper optionalFunctional description STT 6.3. Return air cooler optional6.4. Pre air cooler optional Functional description STT 6.5. Hopper heaters optional6.6. Automatic motor flaps optional Dehumidified Air Dryer 7. Transport, Assembly and StorageTransport, Assembly and Storage with a fork lift truck Dehumidified Air Dryer 7.1. Transport and PackingTransport, Assembly and Storage Dehumidified Air Dryer Transport, Assembly and Storagewith a workshop crane Transport with a workshop crane SM2-625Transport, Assembly and Storage Dehumidified Air Dryer 7.2. Assembly7.3. Storage Dehumidified Air Dryer 8. Assembly instructionsAssembly instructions Dehumidified Air Dryer 8.2. Connection of the air coolers optionalAssembly instructions Assembly instructions Dehumidified Air Dryer 8.3. Electrical connectionTechnical Data 9. Technical DataBasic Equipment Optional EquipmentDimension sheet Technical Data139O mm 350mmSpare parts list 10. Spare parts listSpare parts list Pos. ID-numberDescription Spare parts listSpare parts list 10.1. Switching Cabinet and Operating UnitAccessories Return air cooler optionalDehumidified Air Dryer 11. Electrical manualElectrical manual Accessories 12.AccessoriesDehumidified Air Dryer SM2-62502/01GB Accessories Entering values on the OPSterling Material Processing Procedure 3.3Entering ValuesGeneral Operation StepException 3.3.1Entering Numerical ValuesGeneral Operation Procedure 3.3.2Entering Alphanumeric ValuesGeneral Operation StepStep ProcedureGeneral Operation Procedure 3.3.3Entering Symbolic ValuesGeneral Operation Step10/00GB Accessories Flap control with Fuzzy-LogicSterling Material Processing 10/00GB Flap control with Fuzzy-LogicControl unit “flap”