Eaton XV-440 Series Pressure Valve Commissioning
Model: XV-440-12TSB-1-10 (12 GPM, 10Vdc Input, T-Slot Body)
System Compatibility: Hydraulic circuits ≤210 bar (3000 PSI)
Pre-Debugging Requirements
-
Safety Lockout
- Depressurize system: Engage hydraulic lockout/tagout (LOTO# HV-03)
- Verify accumulator bleed-down (pressure gauge ≤1 bar)
-
Setup Verification
plaintextCopy Code• Fluid: ISO VG 46 hydraulic oil (Δvisc ≤20% from baseline)
• Filtration: Beta₅≥200 (NAS Class 7)
• Ambient Temp: 5-50°C (derate 0.7%/°C beyond range)
• Mounting torque: 35 Nm ±3 Nm (SAE J1926-1 flange)
Debugging Sequence
STEP 1: Electrical Validation
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[Wiring Check]
Terminal 1: +10Vdc ref (Shield: Drain to chassis)
Terminal 2: Command signal (0-10Vdc = 0-210 bar)
Terminal 3: Sensor feedback (4-20mA output)
Terminal 4: 0Vdc
[Test Parameters]
• Insulation resistance: >20MΩ @ 500Vdc (IEC 60204-1)
• Signal noise: <50mVpp with 10Hz low-pass filter
STEP 2: Mechanical Zero Calibration
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1. Disconnect electrical connector
2. Rotate manual override screw CCW until stop (hear 3 clicks)
3. Apply test pressure @ 10 bar → confirm drain port leakage <30 ml/min

STEP 3: Dynamic Response Test
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Command Signal Expected Response Tolerance
────────────── ───────────────────── ──────────
Ramp 0-10V/10s Linear pressure rise Hysteresis ≤2% FS
10V step Settling time ≤450ms Overshoot ≤8%
1Hz sine @ 5V Phase lag ≤15° Gain error ±3dB
Diagnostic Parameters
Feedback Signal | System State | Corrective Action |
---|---|---|
4.0mA ±0.1mA | Under-range fault | Check sensor coupling |
22.5mA | Over-pressure trip | Verify relief valve setting |
3.2mA steady | Spool sticking | Flush with Eaton CLEAN-SEAL kit |
Software Configuration (Via Eaton Pro-FX)
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; XV-440 Configuration File
[PRESSURE_PROFILE]
Ramp_Rate=12 bar/sec ; Max allowable slew rate
Deadband_Comp=0.8% ; Hysteresis compensation
Pressure_Limit=195 bar ; Soft cutout threshold
[DIAGNOSTICS]
Fault_Delay=1.5 sec ; Spike suppression window
Auto_Zero=ENABLED ; Zero-point recalibration
Critical Warnings
HAZARDOUS CONDITIONS
- NEVER bypass mechanical stop during calibration → risk of sudden pressure release
- Maintain fluid velocity ≤6 m/sec in drain line
- Disable auto-zero if fluid contamination >ISO 17/14
-
FAULT RECOVERY PROTOCOL
plaintextCopy Code1. Power cycle valve
2. Force manual override CW→CCW ×3
3. Execute factory reset: Hold test button 10s until LED flashes red
Performance Validation
Test 1: Static Pressure Holding
plaintextCopy Code• Setpoint: 150 bar
• 5-min drift: ≤3 bar (ISO 10767-1 Class C)
Test 2: Step Load Response
plaintextCopy CodeApply 25% → 75% load step:
Recovery time: ≤800ms
Peak deviation: ≤12%
XV-440-12TSB-1-10 EATON PDF
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