DUPLOMATIC VICKERS rexroth eaton hydraulic valve
2 month ago
Product details
1. Model Breakdown and Classification
TheDS5-TA23/14N-D24K1is aproportional directional control valvemanufactured byItaly’s DUPLOMATIC (Diploma), categorized underelectro-hydraulic proportional valves. The model code is decoded as follows:
• DS5: Series identifier (DS series denotes proportional directional valves; "5" indicates valve body size).
• TA23:
• T: Neutral position function (specific function, e.g., "O-type" or "Y-type," requires reference to spool design).
• A23: Spool model (A23 represents a specific flow-pressure characteristic curve).
• 14N:
• 14: Maximum rated flow140 L/min(@10 bar pressure drop).
• N: Mounting interface type (N denotes ISO 4401 standard interface).
• D24K1:
• D24: Electrical interface withDC 24V proportional solenoid drive.
• K1: Control signal type (K1 indicates closed-loop control with position feedback).
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2. Key Performance Parameters
【表格】
Parameter Value Explanation
Rated Flow 140 L/min (@10 bar pressure drop) Actual flow varies with pressure drop; refer to flow-pressure curves.
Max. Operating Pressure 350 bar Short-term peak pressure up to 420 bar (<10% duty cycle).
Proportional Control Range 0–100% Solenoid current and spool displacement exhibit linearity for precise control.
Hysteresis ≤1.5% Repeatability error in output flow during input signal changes.
Response Time ≤25 ms (step input) Delay from signal receipt to spool reaching target position.
Leakage ≤150 mL/min (@350 bar) Internal leakage affecting system efficiency.
Operating Temperature -25°C ~ +80°C Hydraulic oil temperature must remain within this range to avoid seal degradation or sticking.
Electrical Interface DC 24V (D24), with feedback port Requires matching proportional amplifier (e.g., DUPLOMATIC DPA series).
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3. Core Functions and Technical Features
• Proportional Directional Control:
• Continuously regulates spool opening via solenoid current adjustment, enabling precise flow and direction control.
• Neutral position function (e.g., O-type) locks actuator position to prevent drift.
• Closed-Loop Feedback Control (K1):
• Built-in displacement sensor monitors spool position and feeds back to the controller for closed-loop operation.
• Significantly reduces hysteresis and linearity errors, enhancing control accuracy (ideal for high-dynamic applications).
• High Contamination Resistance:
• Optimized spool-valve body clearance design tolerates NAS 6-grade hydraulic oil contamination (requires regular filtration).
• Modular Design:
• Supports stacked installation (e.g., with pressure valves or check valves) for simplified system integration.
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4. Typical Applications
• Injection Molding Machines: Controls clamping, injection, and ejection actions with precision for molded parts.
• Die-Casting Machines: Regulates injection speed and pressure to minimize porosity and flash defects.
• Construction Machinery:
• Controls boom/arm movements in excavators.
• Synchronizes luffing/slewing systems in cranes.
• Metalworking Machines: Manages hydraulic fixture clamping force and speed to prevent workpiece deformation.
• Automated Production Lines: Drives hydraulic actuators in robotic gripping/assembly stations.
5. Common Faults and Troubleshooting
【表格】
Fault Symptom Possible Causes Solutions
No Action/Slow Response Solenoid断路 (open circuit), insufficient power voltage Check electrical connections; measure voltage (≥22V).
Unstable Flow Feedback signal interference, oil contamination Shield control lines; replace hydraulic oil and clean valve body.
Excessive Leakage Seal aging, valve body scoring Replace seals; lap valve body mating surfaces.
High Noise Spool sticking, cavitation Clean spool; verify oil cleanliness (NAS≤6).
Overheating Excessive pressure drop, prolonged full-load operation Optimize piping design; add cooling; avoid continuous full-load use.
6. Selection and Matching Guidelines
• Flow Matching:
• Select valve rated flow based on system peak demand (e.g., for 120 L/min systems, choose DS5-TA23/14N).
• Avoid prolonged operation above 90% of rated flow to prevent overheating.
• Pressure Matching:
• Ensure system maximum pressure ≤ valve rated pressure (with 10–20% margin).
• Control Signal Matching:
• Requires proportional amplifier (e.g., DPA-01) for 0–10V or 4–20mA control signals.
• Feedback interface must align with controller compatibility (e.g., PLC or dedicated motion controller).
• Mounting Interface:
• Verify valve interface (ISO 4401) matches piping connections (subplate or manifold-mounted).
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Ningbo Hengnuo Hydraulic Drive Co.,Ltd
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