Model Interpretation (D661-367A)

• D661: Series code (ISO 4401-05, integrated 24VDC electronics)

• 3: Flow rating code (medium flow)

• 67: Spool/pressure/configuration combination code

• A: Electrical interface/signal type (6+PE connector, standard command/feedback)

Technical Specifications

• Power Supply: 24VDC (18–32VDC), 200mA static, 350mA dynamic

• Command Signal: ±10V / 4–20mA (optional)

• Feedback Signal: 4–20mA (LVDT spool position)

• Connector: 6+PE (EN 175201-804)

• Protection Class: IP65 (locked)

• Ambient: −20°C ~ +60°C

• Fluid: −20°C ~ +80°C

  Weight: Approx. 5.7kg

  Seals: Standard NBR; optional FPM (V)

Interface & Communication

Key Features

• ServoJet Pilot: Contamination-resistant, low leakage (<15ml/min), long service life

• Integrated Closed-Loop Electronics: On-board PID for high accuracy and repeatability

• High Dynamic Response: ≤10ms step response for high-speed precision applications

• Low Zero Leakage: Energy-efficient, suitable for long-term pressure-holding/standby systems

• Fail-Safe Design: Spool centers on power loss/fault; custom safe positions available

Applications

• Industrial Automation: High-precision machine tools, CNC centers, robotics hydraulic systems

• Test Equipment: Material testing machines, fatigue test benches, hydraulic simulation platforms

• Metallurgy: Roll gap control, tension control systems

• Aerospace: Ground simulation equipment, flight test rigs

Compatibility

• Series Compatibility: Interchangeable with D661 (G/C/A types), D662/D663 (ISO 4401-05)

• Upgrade Replacement: Direct replacement for older D633/D634 servo valves for improved dynamics

• System Requirements: 24VDC power, analog controller, ISO 4401-05 standard manifold