Direct Acting High-Speed
Servo Valve
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DA03S Servo Valve
Direct Acting High-Speed Servo Valve
The Direct Acting High Speed Servo Valve (DASV) model from Santest, is the fastest acting servo valve presently available on the market. This unique high-speed valve is designed to serve both hydraulic and pneumatic applications with high precision and extremely low power consumption. The result is high-speed response (1.5 msec from 0 to 100%) and surpassing anti-contamination characteristics (NAS1368 Class 10).
Specifications
| Rated Flow (△P=7MPa) | 10 L/min | 20 L/min | 40 L/min | 60 L/min | 80 L/min |
| Max. Operating Pressure | 35MPa | ||||
| Internal Leakage (Ps=21MPa, hydraulic oil=ISO VG46) | ＜1.7L/min | ||||
| Step Response(0 100%, Typical)(*1) | 1.2msec | 1.2msec | 1.2msec | 1.5msec | 1.6msec |
| Frequency Response (*2) | 750Hz | 640Hz | 520Hz | 620Hz | 570Hz |
| (±25% Amplitude) | 540Hz | 510Hz | 450Hz | 490Hz | 480Hz |
| Spool type | Zero Lap | ||||
| Hysteresis | ≦2% | ||||
| Threshold | ≦0.5% | ||||
| Ambient Temperature | −20～50℃ (All-in-one) / −40～85℃ (Separated amplifier type) | ||||
| Vibration | 10G (All-in-one) / 20G (Separated amplifier type) | ||||
| Protection Level | IP65 | ||||
| Contamination | NAS1638 Class 10 | ||||
| Mass | 6kg or less |
*1 Dry type, Supply pressure:7MPa, Supply voltage:48VDC, Port A and B direct connection.
*2 Forced oil cooling type, Supply pressure:7MPa, Supply voltage:48VDC, Port A and B direct connection.
*3 In case of using the forced oil cooling type without drain port, the Max. pressure at return port is 7MPa or less.
*4 Back pressure at the drain port (Y) should be 0.05MPa or less and not be a negative pressure.