D634-1054
The D634-1054 is a single-stage direct drive servo valve of MOOG D634 series. It adopts permanent magnet linear force motor for direct spool driving without pilot oil supply. Integrated 24VDC electronic unit and LVDT closed-loop spool position feedback ensure high precision and stable dynamic performance irrelevant to working pressure. Spring centering structure enables automatic neutral reset when power fails. This model suits medium flow and general dynamic control scenarios.
Description
1. General Description
The D634-1054 is a single-stage direct drive servo valve of MOOG D634 series. It adopts permanent magnet linear force motor for direct spool driving without pilot oil supply. Integrated 24VDC electronic unit and LVDT closed-loop spool position feedback ensure high precision and stable dynamic performance irrelevant to working pressure. Spring centering structure enables automatic neutral reset when power fails. This model suits medium flow and general dynamic control scenarios.
2. Hydraulic Specifications
Max working pressure of port P, A and B: 350 barT port pressure: 50 bar without Y port, 350 bar with Y portRated flow under 35 bar pressure drop: 60 L/minMaximum flow: approximately 180 L/minInternal leakage: ≤0.55 L/minApplicable fluid: mineral oil complying with ISO 11158 and DIN 51524Fluid temperature range: -20 °C to 80 °CRequired fluid cleanliness: ISO 4406 17/14/11 or higherOverall weight: about 6.3 kg
3. Performance Characteristics
Full stroke step response: ≤20 ms-3dB frequency bandwidth: 70-80 HzHysteresis: less than 0.4% full scaleResolution: less than 0.1% full scaleNull drift under 60K temperature variation: less than 1.0% full scale
4. Electrical Specifications
Rated supply voltage: 24 VDC, adjustable range 18-32 VDCMaximum working current: 3.5 ASwitchable control signals: ±10 V, ±10 mA, 4-20 mASpool position feedback signal: 0-10 VDCConnector specification: M18, 6 pins with PE terminal, IP65 protection gradeAmbient working temperature: -20 °C to 60 °CElectromagnetic compatibility: CE certified
5. Key Features
Pilot oil free design for easy installation and maintenanceHigh accuracy closed-loop position controlSteady dynamic response under variable load conditionsLow leakage design reduces energy consumptionFail-safe spring reset protects whole hydraulic system
6. Application Fields
High precision hydraulic press equipmentDynamic material detection benchesFatigue endurance testing devicesClosed-loop position, speed and pressure control systems
7. Wiring Definition
Pin 1: +24 VDCPin 2: Power groundPin 3: Command signal positive terminalPin 4: Command signal negative terminalPin 5: Position feedback outputPin 6: Feedback groundPE: Protective earth terminalShielded twisted pair cable is recommended for signal wiring
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