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Control Devices for Metering and Batching Equipment

SD-02 Control System

SD-02 control system within a continuous weighing batcher  is aimed at providing volumemetric and gravimetric batching of bulk and fluid materials as per setup metrological parameters.

Operation Features

Basic Parameters for SD-02 Control System within Continuous Weighing Batcher

 Limits of permissible error for batchers as per maximum
performance provided that the batcher operates continuously for at least 6 minutes


 Supply voltage of monophase alternate current with frequency 50.0±0.5, V  

 from 187 to 242

 Power demand, W, not exceeding


 Ambient temperature, ºС

from -10 to +35

 Dust-proof-and-moisture-proof class of the cabinet (as requested)

IP54 (IP65)

SD-02 System Provides the Following Functions:

  • Manual charge of hopper batchers up to upper lever with batcher actuators stopped
  • Charging hopper batchers with preset capacity
  • Viewing archives for hour, shift, total run
  • Receipt and processing of signals from strain sensors and control of batching device actuators for bulk and fluid material batching through gravimetric and volumetric methods basing on processed data
  • Control of several batching devices simultaneously basing on Customer's requirements
  • Receipt and processing of digital signals on the motor of agitator and discharge units being ready
  • Generating digital signals for control of an agitator, dumping device, for SD-02 control system being ready for operation
  • Exchanging data with the upper level computer through interface CAN, RS-485 (Modbus RTU data exchange protocol)


SD-02 is a modular unit allowing to configure the system as per specific needs of certain equipment for PCS and to be installed into a cabinet. The class of dust and moisture protection of the cabinet is not lower than IP43.

Operation Features


Acceptable value




Features Provided within a Continuous Weigh Hopper

 Maximum performance depending on batcher design, t/h




 Minimum performance out of NPP, %




Climatic Variables 

 Air pressure, kPa




 Relative humidity, %




Parameters of Digital Inputs 

 Low-level voltage, V




         - logical one level, V




 Duration of input signal, ms




Parameters of Digital Outputs 

 Switching voltage, V




 Load current, A




Parameters of Analogue Strain Metering Channel

 Load resistance (from 1 to 4 sensors connected in parallel), Ohm




 Output voltage for sensor feeding, V




Batcher Operation Principle

where P - quantity of materials in the bin

Components of SD-02 Control System

SD-02 Schematic Block Diagram

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