D634-397C
D634-397C is a pilotless direct drive servo valve of MOOG D634 series complying with ISO4401-05 (NG10) standard. It adopts 24VDC integrated electronics and built-in LVDT spool position feedback. Featuring larger flow capacity and faster dynamic response, it is designed for heavy-duty closed-loop hydraulic systems with high pressure and high flow demands.
Description
1. Product Brief
D634-397C is a pilotless direct drive servo valve of MOOG D634 series complying with ISO4401-05 (NG10) standard. It adopts 24VDC integrated electronics and built-in LVDT spool position feedback. Featuring larger flow capacity and faster dynamic response, it is designed for heavy-duty closed-loop hydraulic systems with high pressure and high flow demands.
2. Basic Information
Brand: MOOGModel: D634-397CCategory: Electro-hydraulic direct drive servo valveMounting Standard: ISO4401-05 (NG10)Drive Mode: Permanent magnet linear force motor, pilotless designPower Supply: 24VDC integrated drivePosition Feedback: LVDT closed-loop detectionReset Mode: Spring centering, neutral return on power lossProtection Class: IP65Weight: Approx. 10.5kg
3. Function & Positioning
Core Function: Precisely regulate hydraulic flow and direction via analog control signals, fulfill closed-loop control of position, velocity, pressure and thrust.Product Positioning: Flagship high-flow high-response model of D634 series. It replaces multi-stage combined valve assemblies and fits heavy-duty working conditions with 350bar high pressure, large flow and frequent dynamic actions.
4. Core Performance Parameters
Hydraulic Parameters
Max working pressure: 350barMax T-port pressure: ≤50bar (without Y port), ≤350bar (with Y port)Rated flow @35bar pressure drop: 430-450L/minPeak flow: Approx. 580L/minNull internal leakage: ≤8.5L/minApplicable fluid: ISO11158 mineral oilFluid temperature range: -20℃ ~ 80℃Fluid cleanliness: ISO4406 17/14/11
Dynamic Parameters
Full stroke step response: ≤11ms-3dB frequency bandwidth: 90-100HzHysteresis: ＜0.17% full scaleControl resolution: ＜0.07% full scaleTemperature drift: ＜0.9% full scale
Electrical Parameters
Rated voltage: 24VDC, operating range 18-32VDCMax operating current: 5.8AStandard control signal: ±10VDCOptional signal: ±10mA, 4-20mASpool feedback signal: 0-10VDCConnector: M18 6-pin with PE terminalAmbient temperature: -20℃ ~ 60℃Certification: CE compliant
5. Matching Accessories
Shielded twisted pair cable, M18 waterproof connectorISO4401-05 valve mounting manifoldHigh precision hydraulic filter24VDC low ripple stabilized power supplyServo closed-loop controller, displacement and pressure sensors
6. Application Fields
Heavy forging, extrusion and high-pressure hydraulic equipmentAerospace and automotive structural test benchesHigh-load vibration test and motion simulation facilitiesMarine and offshore engineering hydraulic systemsHigh-end hydraulic control systems for wind power and large construction machinery
Get a Quote