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High Response Proportional Flow and Directional Control Valve
- High-frequency response equivalent to electric/hydraulic servo valve.
- High-output proportional solenoid directly drives spool.
- Minor feedback with LVDT(Linear Variable Differential Transformer) enables accurate spool positioning.
- All ports return to block position when amplifier is turned off or connection is disconnected. (Fail-safe function)
Features
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High Response Proportional Flow and Directional Control Valve
 External view of ESH-G01 |
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Performance
Main text
High Response Proportional Flow and Directional Control Valve
ESH-G01-H520A-10 (For rated flow = 20L/min)
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Input voltage - Characteristics of flow Valve pressure drop: 7MPa (71kgf/cm2) 
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Valve differential pressure - Characteristics of flow 
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ESH-G01-H540A-10 (For rated flow = 40L/min)
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Input voltage - Characteristics of flow Valve pressure drop: 7MPa (71kgf/cm2) 
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Valve differential pressure - Characteristics of flow 
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Application
Main text
High Response Proportional Flow and Directional Control Valve
- General industrial machinery including mainly machine tools and forging/forming equipment
- Carrier device requiring shockless function
- Test equipment requiring high-speed response
- Ideal for uses that perform actuator positioning and pressure control with feedback control function.
Specifications
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High Response Proportional Flow and Directional Control Valve
| Item / Model No. | ESH-G01- H510A-10 |
ESH-G01- H520A-10 |
ESH-G01- H540A-10 |
|
|---|---|---|---|---|
| Maximum operating pressure P,A,B MPa {kgf/cm2} |
32 | |||
| T port allowable back pressure MPa {kgf/cm2} | 2.5 {25.5} max | |||
| Rated flow rateL/min (Valve pressure drop 7MPa {71 kgf/cm2}) |
10 | 20 | 35 | |
| Maximum flow rate L/min | 22 | 35 | 50 | |
| Limit valve pressure drop MPa {kgf/cm2} | 32 | 21 | 14 | |
| Hysteresis % | 0.5 max. | |||
| Step response ms (0to100% Displacement) |
16 max. (*1) | |||
| Frequency response Hz (90°C phase delay +/- 10% displacement) |
At least 80 (*1) | |||
| Center drift |
Supply pressure | 0.5% max/FS (  p=25MPa
{255kgf/cm2}) |
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| Fluid temperature | 1.5% max/FS (t=40°C) |
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| Filtration | Class NAS9 max. | |||
| Operating fluid temperature range °C (Recommended fluid temperature range °C) |
0 to 60 (30 to 60) | |||
| Water and dust resistance | IP53 | |||
| Mass kg | 2.3 | |||
Notes : *1.Maximum flow depends on channel type Mand working pressure.
