Sterling SDF 250, SDF 400, SDF 500 Technical data, Basic Version, Optional Equipment, Performance

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SDF 250/400/500

9. Technical data

Basic Version

Central control unit for operating the dryer and the drying hoppers.

Drying temperature adjustment for all connected hoppers

•SPS-S7 PLC

•Touch-screen

•Timer clock

•Regeneration heater with safety temperature limiter

•Isolated alarm output

•Optical alarm

Optional Equipment

•Adjustable, dew point dependent regeneration switch with dew point display -Optimum efficiency due to continuos online dew point measurements -Maximum drying quality - minimal energy consumption

-Significant energy savings when processing materials with a low initial moisture content

•Controlled blowers

-Dry air volume optimally adapted to respective requirements -No loss of heat during part-load operation

-Significant energy savings

•Automatic air distribution through air distribution valves with fuzzy logic control -Prevents the material from being exposed to un nec es sary ther mal stress -Significant energy saving due to heater shut-off function

-Optimum operating safety due to special sensor technology

•Throughput control at the drying hopper for automatic dwell time monitoring (only available when used in conjunction with Sterling Central Conveyor System)

-Optimum protection for changing service conditions

-Alarm or removal stop if dwell time has not been reached -Optimum operating safety through dwell time monitoring

•Communication Interface

Performance

•Maximum air drying capacity of 250 m3/hr up to 500 m3/h (depending on version)

•Operates with 400 V +/-10 %, 3 AC, 50 Hz voltage

•Average dewpoint temperature of -50° C (- 60 °F)

•Compressed-air consumption valve stem: 3 l/h

Technical data 9-1

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Contents Sterling Material Processing SDF 250/400/500 SDF 250/400/500 Table of contents 10-1 General Information SDF 250/400/500 SDF 250/400/500 Legal basis Explanations and informationFields of applications Safety instructions General Assembly OperationMaintenance For the safety of the devices Start up Control Unit Touch ScreenSwitching on the Dryer Basic parameters Entering Dryer ValuesHeater Reg. Act Exit air ActDew point max Dew point ActEntering hopper values Hopper temp Target Hopper temp ActGranule Temp Drying time TargetSetting the timer Timer is only operating, when the dryer is switched on Observing processing status Actual hopper temperature displayed in C Status dryerActual operation status Setting date and time Changing language SDF 250/400/500 Continuous operation SDF 250/400/500 Start up Switching the dryer/hopper heater off Error and error correction LED Alarm Actual messages Error Bypass Flap Error Valve BlockTemperature Measurement Outgoing Air Defective Excess Temperature Return AirExcess Temperature Heater Hopper Insufficient Temperature Heater HopperTemperature Measurement Granules Defective Hopper Excess Temperature Granules HopperOverload Regeneration Heater STB has been activated Main switch hopper heater # Controller is offOverload Drying Heater STB has been activated Alarm protocol Maintenance SDF 250/400/500 Maintenance schedule Cleaning or Replacing the Air Filter Cleaning or Replacing the Return Air Filter SDF DryerCleaning or Replacing the Regeneration air filter Filter of the electrical cabinet Disposing of Drying Agents Cleaning the Drying Hopper Remove any granules remaining in the cleaning opening STTSTT 60 Changing the battery of the control system Notch on the battery connector must point to the leftSDF 250/400/500 Resetting the control values Functional description Dew point dependent regeneration switch optional General InformationDrying Hopper Optional Hopper heaters optionalConnection to a Pneumatic Conveying System Optional Return Air Cooler OptionalTransport, Assembly and Storage Tansport and Packing Transport with a fork lift truckTransport with a workshop crane Assembly StorageAssembly instructions Connection of Return Air Cooler Optional Electrical Connection Compressed Air Supply Technical data Basic VersionOptional Equipment PerformanceSDF 250/400/500 Accessories Accessories Spare parts list Drying Hoppers STT 25 STT STT 25 STT STT 25 STT STT 25 STT STT 25 STT STT 25 STT