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call- [EVC20] Electronic Expansion Valve Controller for Bipolar Step Motor
- - New Generation of Electronic Expansion Valve Controller
- High Performance and Stability
- Precise PID and Superheat Control
- Intelligent Temperature and Pressure Control(Hot Gas Bypass and Liquid Injection)
- Compatible with Various Refrigerants
- RS485 Communication
- Manual Valve Open Ratio Configuration
- Smart-Rail Mount
- Perfect Tech Support
With the state-of-the-art technologies, EVC20 has many smart functions and features which can be applied to various fields.
High Performance and Stability
A top-level performance and stability can be achieved with high speed CPU, biopolar step motor driver, 2 RS485 communication ports, and extra remote displays
Precise PID and Superheat Control
Based on the advanced PID algorithm, precise superheat control is possible.
Intelligent Temperature and Pressure Control(Hot Gas Bypass and Liquid Injection)
Temperature and pressure are controlled intelligently by hot gas bypass and liquid injection.
Compatible with Various Refrigerants
R22, R134a, R404a, R407c, R410a, R717, and R23 are compatible and more refrigerants will be available soon.
RS485 Communication
EVC20 can monitor and control up to 128 units(PC, heat pumpt controller, DDC, and etc.) via RS485 communication. 2 extra displays(cable length: 5m) can be connected as well.
Manual Valve Open Ratio Configuration
Operators can configure the valve open ratio manually for the special purpose temporarily.
Smart-Rail Mount
Perfect Tech Support
EVC20 was developed 100% by Dotech's unique design and advanced technologies and tech support is provided perfectly.
■ Technical Specifications
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EVC20-00
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EVC20-R4
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Dimensions
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70(W) X 103(H) X 58(D)mm
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Power
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AC24V +10%/-15%, 50/60Hz, 1A
(including power consumption of expansion valve) |
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Connection
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Screw Terminal
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Compatible Expansion Valve
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Bipolar Step Motor Type, Max. 700mA
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2-Phase Full Step Drive
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1/1000 open ratio control accuracy (0.0 ~ 100.0%)
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RS485 Communication
(MODBUS RTU/ASCII) |
-
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OK
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Remote Display(Optional)
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-
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OK
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Sensor
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Pressure
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DP512-G7(0.5 ~ 4.5V, -1 ~ 15bar)(Optional)
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Temperature
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DPR-PT1K-P3D50L*3m(PT 1000Ω, -100 ~ 100℃)(Optional)
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Operation
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Temperature -10~50℃ / Humidity under 90% RH
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Storage
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Temperature -20~60℃ / Humidity under 90% RH
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| MAKER | DANFOSS | ALCO | SPORLAN | CAREL |
| MODEL | ETS 12.5 ETS 25B ETS 50B ETS 100B ETS 250 ETS 400 |
EX4 EX5 EX6 EX7 EX8 |
SEI 0.5~11 SEI 1.5~20 SEI 30 SEI 100 SEI 175 |
E2V E2VP |
(Danfoss, Alco, Sporlan, Carel, and etc.)
■ Accessories
| Category | Model | Specifications |
| Power Trans | 24069001 | AC220V to AC24V, 1A |
| 24069002 | AC110V to AC24V, 1A | |
| Pressure Sensor | DP512-G7 | -1 to 15 bar, 0.5 to 4.5 VDC output. 1% accuracy 7/16-20 UNF, Packard connetor type |
| Temperature sensor | DPR-PT1K-P3D50L*3m | PT1000 ohm Diameter : 3 pi Probe length : 50 mm Cable length : 3m |
| Remote Display Module | FX-JView-EVC20 | |
| CPAD-EVC20 |
