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](images/p_srv_ctrl_sys.png)
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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 |