Technical data – Sterling SDF 250 User Manual
Page 64
SDF 250/400/500
Technical data 9-1
9. Technical data
Basic Version
Central control unit for operating the dryer and the drying hoppers.
Drying temperature adjustment for all connected hoppers
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SPS-S7 PLC
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Touch-screen
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Timer clock
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Regeneration heater with safety temperature limiter
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Isolated alarm output
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Optical alarm
Optional Equipment
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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
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Controlled blowers
-Dry air volume optimally adapted to respective requirements
-No loss of heat during part-load operation
-Significant energy savings
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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
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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
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Communication Interface
Performance
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Maximum air drying capacity of 250 m3/hr up to 500 m3/h (depending on version)
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Operates with 400 V +/-10 %, 3 AC, 50 Hz voltage
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Average dewpoint temperature of -50° C (- 60 °F)
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Compressed-air consumption valve stem: 3 l/h