Sterling SDAA 25-100 specifications Process Air Temperature Controller

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Process Air Temperature Controller

Our dryers use a microprocessor-based PID temperature controller for maintaining process air temperature. The controller is a modular, self-contained unit you can remove from the mounting housing. All parameters except for the process air set point are factory set and adjusted; normally, no field adjustment to the internal controls is necessary.

Figure 5: Typical Process Air Temperature Controller

PV

SV

Identifying Process Air Temperature Controller LED Indicators

 

Indicator

Name

Description

 

 

 

 

 

 

 

PV

Process Value

During normal operation, the process value (PV)

 

 

 

 

Numeric LED

numeric LED indicator displays the process

 

8.8.8.8

 

 

 

 

temperature at the To Process thermocouple. It

 

 

 

 

 

 

 

 

 

 

also lists parameters during setup and error

 

 

 

 

 

messages if any errors occur.

 

 

 

 

 

SV

Set Value

During normal operation, the set value (SV)

 

 

 

 

Numeric LED

numeric LED indicator displays the process set

 

8.8.8.8

 

 

 

 

 

 

point temperature selected for the dryer. The dryer

 

 

 

 

 

 

 

 

 

 

then maintains this set point temperature. This

 

 

 

 

 

LED indicator also displays parameter and pre-set

 

 

 

 

 

function values during configuration setup.

 

 

 

 

 

OUT1

Out 1 LED

Lit when Control Output 1 is on. The Out1

 

 

 

 

 

indicator lights when the controller signals the

 

 

 

 

 

process heaters to be energized.

 

 

 

 

 

OUT2

Out 2 LED

Lit when Control Output 2 is on. Not used in

 

 

 

 

 

this application.

 

 

 

 

 

AT

AT LED

Flashes during auto-tuning in process value (PV)

 

 

 

 

 

screen.

 

 

 

 

 

 

Dehumidifying Dryers

Chapter 4: Operation

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Page 26 Page 28
Contents Sdaa 25-100 15-60 cfm Dehumidifying Dryers Shipping Information Table of Contents Maintenance Service Department Sales Department Contract Department Safety How to Use This ManualSafety Symbols Used in this Manual Wear Safety Glasses and Work Gloves General Responsibility ResponsibilityRemember Operator ResponsibilityReporting a Safety Defect Maintenance ResponsibilityDehumidifying Dryers Safety Functional Description Models Covered in This ManualGeneral Description Electrical Features Standard FeaturesWhat is desiccant? Mechanical FeaturesSafety Devices and Interlocks Controller FeaturesOptions Safety Circuit Standards Safety Device Lock-OutsFail Safe Operation Installation Uncrating the EquipmentRigging and Placing the Dryer Machine-Mount Dryer Dimensions Floor-Mount Dryer Dimensions Recommended Dryer Lifting Hardware Suggested Lift Rigging for Cart Mounted DryersSuggested Lift Rigging for Machine Mounted Dryers Electrical ConnectionsMaking Dryer/Drying Hopper Process Air Connections Setup ProceduresThree-Phase Models Checking for Proper Blower RotationInstalling Water Lines Hose and Hose Clamp Drying Hopper Air Trap ConsiderationsOptional Aftercooler Starting Up the Dryer Auto-Tuning the DryerInitial Start-up Pre-Startup ChecksShutting Down the Dryer Start-up OperationSwitches Indicator LightsController Description and Operation Process Air Temperature Controller Lit when Control Output 1 is on. The Out1Lit when Control Output 2 is on. Not used Setting the Process Air Temperature Indicator Name DescriptionLights in the Operation Indicator Section when Identifying Temperature Controller KeysE5CN Operating Parameters Tuned prior to dryer startup Adjustment Level Indicator Name DescriptionON, OFF Entering Operating Parameters to Select ModesSetting the High Dew Point Alarm Process Air Dew Point DisplayOptional Redundant Safety Controller Display Setting the Redundant Safety ControllerWatlow Operating Parameters Mode Parameter Setting range Default Manf. setting Dryer Operation Procedures Model Heating Cooling 15 cfm 30 cfm 60 cfm Page Controller Operation With Optional Alarm Horn & Reset Button Page Alarm Display Messages Shutting Down the Dryer Auto-Tuning the DryerMaintenance Preventative Maintenance SchedulePhotocopy this page for your maintenance records Vacuuming Preventative MaintenanceRecommendations for Cleaning and Replacing Filters Servicing Process Air FiltersServicing the Dew Point Monitor Cleaning with Compressed AirSymptoms of Worn Desiccant Corrective MaintenanceReplacing Worn Desiccant First AIDConsult local disposal regulations for more information Replacing the Process Heater ProceduresTroubleshooting Problem Possible cause Corrective actionIntroduction Problem Possible cause Corrective action Check resin manufacturer’s data Determining Temperature Controller Errors or Sensor Errors Using a ThermocoupleUsing a Platinum Resistance Thermometer Appendix WarrantyWarranty Specifications Warranty RestrictionsWarranty Liabilities Optional ComponentsCustomer Responsibilities Annex B Information Technical SpecificationsAftercooler Design Specifications Drawings and Diagrams Spare Parts ListLevel 2 & 3 Spare Parts List Electrical & Mechanical Returned Material Policy Safety Tag InformationWarranty Returns Dryer Safety TagsLocated on back of Dryer Dryer Identification Serial Number TagSales Department Service DepartmentTechnical Assistance Parts Department
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