REXROTH VT-TSPD-1-1XV00 R900208591

Core Technical Specifications

• Nominal Flow Rate: 40 L/min under ΔP=10bar
• Max Operating Pressure: P/A/B port 315 bar, T return port 210 bar
• Control Signal: ±10V analog command, built-in LVDT spool position feedback
• Response Time: ≤ 12ms (0–100% spool stroke step response)
• Electromagnet Rated Current: 1.6 A, low power consumption design
• Hydraulic Medium: Mineral oil, HFA/HFC water glycol, biodegradable hydraulic oil
• Medium Temperature Range: -20°C ~ +80°C
• Ambient Operating Temperature: -30°C ~ +70°C
• Installation Standard: ISO 4400 standard mounting surface, interchangeable with same-spec servo valves
• Electrical Protection Grade: IP65 (DB9 connector with dust cap installed)
• Seal Material Standard: Fluorine rubber FKM, resistant to high temperature and chemical hydraulic medium
• Weight: 3.2 kg

Functional Features

1. CFD optimized internal flow channel, 30% lower pressure loss compared with conventional proportional valves, reduce system heat generation
2. Built-in high-precision LVDT spool position sensor, full closed-loop spool position control, zero static flow drift
3. Modular pluggable electromagnet and feedback unit; replaceable without removing valve from manifold block, reduce maintenance downtime
4. Integrated coil over-temperature real-time monitoring sensor, automatic current limiting protection to prevent coil burnout
5. Unified DB9 integrated electrical interface, integrates power supply, command signal and feedback signal, simplify wiring layout
6. Full FKM fluorine rubber sealing ring set, compatible with multiple environmental protection hydraulic media
7. Internal anti-cavitation buffer structure, eliminate hydraulic impact noise during rapid spool reversing
8. Built-in short-circuit, reverse polarity, over-temperature multi-layer electrical protection circuit

Working Principle

1. External VT series amplifier outputs ±10V analog command signal via DB9 cable to valve integrated digital drive board.
2. Drive board converts analog command into target spool position value, compares with real-time LVDT spool feedback signal to generate deviation current.
3. Deviation current drives left/right proportional electromagnet to push valve spool for displacement; closed-loop feedback continuously corrects spool position to match target command.
4. Spool displacement changes the opening area of P-A/P-B flow channel, realizing stepless adjustment of output hydraulic flow rate and flow direction; built-in buffer groove suppresses pressure shock during reversing.
5. Internal temperature sensor collects coil temperature data; drive board automatically reduces output current once temperature exceeds threshold to avoid permanent magnet demagnetization and coil damage.

Structure & Material Composition

• Valve Main Body: High-strength cast alloy steel, precision grinding flow channel, anti-rust black oxide surface treatment
• Valve Spool: Quenched alloy steel, mirror grinding matching surface, low friction, anti-wear long service life
• Sealing Components: Full FKM fluorine rubber O-rings and back-up rings, high temperature and medium corrosion resistant
• Integrated Drive Housing: Die-cast aluminum alloy shell, surface electrophoretic anti-corrosion coating
• Electromagnet Core: Soft magnetic silicon steel sheet, high magnetic permeability, low hysteresis loss
• Electrical Connector: Metal shell DB9 aviation plug, internal silicone waterproof sealing ring

Installation Requirements

1. Install on ISO 4400 standard hydraulic manifold block, manifold flatness tolerance ≤ 0.003mm to avoid internal leakage
2. Hydraulic pipeline filter precision must reach NAS 8 cleanliness standard; install 3μm pressure-side filter before valve oil inlet
3. Valve mounting surface horizontal installation recommended; vertical installation allowed only with T port downward to prevent air accumulation
4. DB9 wiring cable length ≤ 30m, use shielded twisted cable, shield single-end grounded at amplifier cabinet side
5. Pre-fill hydraulic medium inside valve cavity before commissioning to eliminate air lock phenomenon
6. Tighten mounting bolt torque to 32–36 N·m evenly in diagonal sequence to prevent manifold deformation

Application Scenarios

Operation & Maintenance Precautions

1. Strictly control hydraulic oil cleanliness; oil pollution will cause spool clamping and position feedback failure
2. Do not disassemble integrated electromagnet drive unit under high pressure state, residual hydraulic pressure will eject internal components
3. Regularly check DB9 connector waterproof dust cap; water ingress into plug will lead to short-circuit drive board damage
4. If flow output hysteresis increases, disassemble and clean spool assembly with special hydraulic cleaning oil, replace aging FKM seals
5. Long-term shutdown storage requires filling valve cavity with anti-rust hydraulic oil, seal all oil ports with plastic plugs
6. Medium temperature cannot exceed 80°C continuously; high temperature operation accelerates FKM seal aging and leakage