Japan, Nachi
Nachi High Response Proportional Flow and Directional Control Valve
Made in: Japan
Manufacturer: NACHI
Model: High Response Proportional Flow and Directional Control Valve
Features
- 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)
Perfomance
ESH-G01-H520A-10 (For rated flow = 20L/min)
Input voltage – Characteristics of flow Valve pressure drop: 7MPa (71kgf/cm2) |
Valve differential pressure – Characteristics of flow |
ESH-G01-H540A-10 (For rated flow = 40L/min)
Input voltage – Characteristics of flow Valve pressure drop: 7MPa (71kgf/cm2) |
Valve differential pressure – Characteristics of flow |
Application
- 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
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}) |
||
Fluid temperature | 1.5% max/FS (t=40°C) | |||
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.
Operational theory
Measurement
Gasket surface complies with ISO4401-03-02-0-94.