9907-1200 9907-1198 woodward Electro-hydraulic converters

FAULT MITIGATION‌

‌Symptom‌ ‌Corrective Action‌
Oscillation >±2% FS Increase Td by 0.01s increments
Stiction/stall Verify fluid cleanliness (βₓ(c)≥200)
LVDT error E17 Check shield grounding continuity
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Description

Woodward 9907-1200 and 9907-1198 Hydraulic Actuators

Woodward 9907 Series Actuator Installation‌

‌Models:‌ 9907-1200 (Linear) / 9907-1198 (Rotary)
‌Application:‌ Turbine/Compressor Fuel Control | ‌Ref:‌ Woodward Manual 82715 Rev. G

‌Pre-Installation Verification‌

  1. ‌Environmental Requirements‌

    • Ambient Temperature: -40°C to +85°C (derate above 65°C)
    • Vibration Limit: ≤7.5 mm/s RMS (ISO 10816-3 Group 2)
    • Fluid Compatibility:
      • Hydraulic Oil: ISO VG 32-46 (MIL-PRF-5606H)
      • Prohibited: Phosphate esters

  2. ‌Component Inspection‌

    • Check for shipping damage (seal integrity sticker: WDW-82715-SEA)
    • Verify calibration tag matches P.O. (e.g., CAL:2024-06-18/SN)

‌Mechanical Installation‌

‌Step 1: Mounting‌

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9907-1200 (Linear):
• Mounting flange: ASME B16.5 RF 300#
• Alignment tolerance: ≤0.05mm/m parallelism
• Fastening torque: 120 Nm ±5% (ASTM A193 B7 bolts)

9907-1198 (Rotary):
• Spline shaft: SAE 12T 10/12 involute
• Radial load limit: ≤200 N (at 100 mm from flange)
• Anti-rotation pin: DIN 6325 Grade 10.9

‌Step 2: Hydraulic Connections‌

‌Port‌ ‌Function‌ ‌Fitting Standard‌ ‌Torque‌
P Supply (35-80 bar) SAE J1926-4 ORFS 55 Nm ±3 Nm
T Return ISO 8434-1 37° flare 42 Nm ±2 Nm
A/B Control ports JIC 37° -04 (DN6) 35 Nm ±2 Nm

‌Sealant:‌ Loctite 545 (apply 360° on male threads, cure 1 hr before pressure test)

‌Electrical Integration‌

‌Wiring Specifications:‌

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[LVDT/RVDT Feedback]
- Excitation: 3.0 Vrms ±0.1V @ 2.5 kHz (Shielded pair: Belden 8761)
- Signal leads: Twisted pair ≥1.0 mm² (Min. bend radius: 8×OD)

[Solenoid Valves]
- Coil resistance: 19.5Ω ±0.5Ω @20°C (9907-1200)
- Max inrush: 4.2A DC (Use Woodward 8271-013 suppressor)

[EMC Requirements]
• Conduit entry: PG 13.5 with EMI gland (e.g., Roxtec BDS-HG)
• Grounding: ≤0.1Ω to chassis (AWG 6 cable min.)

Commissioning Protocol‌

‌Hydraulic System Prep:‌

  1. Flush lines with βₓ(c)≥200 filters until NAS 1638 Class 6
  2. Pre-lube pump: 15 min @ 10 bar

‌Actuator Calibration (Using ProAct® Software):‌

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; Configuration Template
[ACTUATOR_TYPE]
Model=9907-1200
Stroke=120mm ; Verify with dial indicator
Null_Offset=3.2% ; Adjust per LVDT feedback
Deadband_Comp=0.8%

[TUNING]
Gain_Kp=1.25
Damping_Td=0.05s
Slew_Limit=15mm/s

‌Functional Tests:‌

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Test 1: Step Response (10-90% stroke)
- Acceptable: ≤450ms (9907-1200), ≤300ms (9907-1198)
Test 2: Hysteresis Check
- Max allowable: ≤0.5% FS
Test 3: Pressure Decay Test
- Hold 70 bar @ P-port → Drop ≤1 bar/min

9907-1200 9907-1198 woodward PDF

9907-1200 9907-1198 woodward

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Shipping:
1. Your item will be shipped to all countries via EMS, unless one country cannot be shipped via EMS. We will choose DHL, UPS, or FedEx. Please leave us your phone number.
2. We will ship the product to you on the same day or within 1-2 working days after receiving your payment. The shipping time depends on the country/region where you reside, the customs and habits of your country/region, and especially during peak hours.
3. Assuming (assuming) that the item requires payment of tariffs from your country, the buyer is obligated. We are not responsible for any taxes or customs fees in your country/region.

 

Return Policy:
1. Please contact us before returning the item.
2. The buyer should inform the seller of all returned items within 7 days after receiving the package. We reserve the right to reject any request to inform the seller for more than 7 days.
3. Returned products must have all original packaging and be in good condition.

 

Response policy:
If you are satisfied with the purchase, please leave us an active response.
2. If you have any questions about the outcome of the transaction or product, please contact us first and we will do our best to satisfy you!
3. Please do not reply with negative feedback before contacting us!

 

 

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