Electro Servo Unit
Capacity Controlled By Input Signal

Electro Servo Unit is capable of combining with all kinds of pumps.

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Features & Cautions

  • Auto-control by the input signal. (Diversity)
    Dong-il Servo unit is able to control discharge volum of metering pump automatically by the input signal of flow, pH, turbidity etc. (DC 4~20mA/~1-+5V)
  • The whole type Servo unit
    Dong-il Servo unit is sealed off by the whole type protective cap with automatic controlling circuit and servo motor on the pump. Accordingly, it’s showing maximized function at indoor and outdoor.
  • Various controlling mode (Fixed Quantity)
    Dong-il Servo unit is possible to control widely with invertor. Therefore it’s not only transfer of fixed quantity but also most suitable at violent site of variation of operating condition.
  • Protective function for servo motor(Durability)
    Dong-il Servo unit has been equipped clutch lever separately. So it gives protection of damages from the servo motor when have continuous operation of Auto/Manual.
  • Handiness of system (Simplicity)
    Dong-il Servo unit is possible to do simpley instrumentation work because feedback and the other wiring are not necessary.
  • Above specifications are that should be changeable due to improvement etc without any notice.

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Specification

• For all models
Input Signal 4~20mA, 1~5V DC (Impedance : 250 Ω)
Voltage 1Ø 110V, 220V AC 50/60Hz
Protection Equivalent to IP54
Installation Indoor or Outdoor (Except hazardous area)

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Servo Unit Control System

servo_control_system

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Servo motor output and stroke length as per pump series

UNIT Type Adaptable PUMP series STROKE LENGTH (mm) Motor (w)
DA 1 DWS, DWM, DWA20, DWA21 4 6
DWA31 6
DA 2 DWB40, DWB41 8
DA 3 DWB51, DWC51L 10
DA 4 DWB60, DWB61, DWC61L 12
DA 5 DWC71L 14 15
DA 6 DWC81L 16
DA 7 DKA 6 6