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Phone: +86 16626708626Description
3. Key Technical Specifications
The Woodward 8280-423 (723PLUS family) delivers digital speed control and mechanical load sharing for dual-engine marine arrangements, offering torsional filtering to handle flexible couplings and custom fuel-limiting algorithms.
| Parameter | Value |
|---|---|
| Part Number | 8280-423 |
| Manufacturer | Woodward, Inc. |
| Control Series | 723PLUS Digital Control (Manual 02881) |
| Input Power | Low Voltage Model: 18–40 VDC (24 VDC / 32 VDC Nominal), 40 W nominal |
| Inrush Current | 7 A startup surge (0.1 ms) |
| Speed Inputs | 2 Magnetic Pickup Units (MPU) or Proximity Sensors (400 Hz to 15 kHz) |
| Discrete Inputs / Outputs | 8 Discrete Inputs |
| Communications | RS-232, RS-422, or RS-485 Modbus; Handheld Programmer port |
| Operating Temperature | -40°C to +70°C (-40°F to +158°F) |
| Dimensions & Weight | 41.28 cm W x 29.21 cm L x 6.04 cm H |
4. Product Introduction & Supply Chain Strategy
The Woodward 8280-423 723PLUS controller governs speed, fueling limits, and load division across dual marine propulsion engines linked through a mechanical gear drive or common shaft. It incorporates specialized algorithms designed to dampen torsional oscillations caused by marine flexible couplings, preventing gear chatter and reducing shaft fatigue.
Holding a factory-sealed Woodward 8280-423 in reserve as New Surplus is a vital supply chain strategy for vessel operators and fleet maintenance teams. Marine governors operate under continuous vibration and salt air exposure, where unexpected control failures can leave a ship dead in the water. Stocking a genuine unused unit guarantees pristine internal circuits, unoxidized connector terminals, and immediate drop-in replacement without expensive refitting or rewriting shipboard PLC integration software.
8280-423
8280-423
5. Installation & Configuration Guide
Marine Propulsion Engine Safety Warning
Uncontrolled engine acceleration or load imbalance can cause mechanical shaft destruction or engine overspeed. Always lock out engine starting air/battery supplies and confirm independent mechanical overspeed shutoff devices are functional before installing or configuring the controller.
1
Power Isolation & Engine Shutdown
Prerequisite
1.Power Isolation & Engine Shutdown:Prerequisite.
Shut down the propulsion engines, isolate 24 VDC control power feeds, and lock out fuel rack actuators.
2
Chassis Installation
Mechanical Mounting
2.Chassis Installation:Mechanical Mounting.
Mount the 8280-423 metal chassis securely inside a low-vibration marine control panel or bulkhead enclosure using appropriate anti-vibration isolation mounts.
3
Landing Power & Signal Lines
Wiring Setup
3.Landing Power & Signal Lines:Wiring Setup.
Land 18–40 VDC power, dual MPU speed pickup lines (using twisted-pair shielded wire), actuator outputs, and load-sharing cross-ties onto the screw terminal blocks. Connect shields to chassis ground at one end only.
4
Handheld Programmer Setup & Dry Run
Commissioning
4.Handheld Programmer Setup & Dry Run:Commissioning.
Connect a Woodward Handheld Programmer or Servlink software tool to the configuration port. Verify parameter setpoints (gain, reset, fuel limits, torsional filter parameters) before cranking the engine.
6. Firmware/Software Versions & Upgrade Notes
- Documentation Reference: Refer to Woodward Manual 02881 for specific wiring schematics, parameter configuration trees, and troubleshooting steps.
- Torsional Filtering: Configure internal digital filtering parameters to smooth out low-frequency oscillations inherent in marine engine-gearbox flexible couplings.
- Programming Interface: Parameters are set using a Woodward 9907-205 Handheld Programmer or a PC running Woodward Servlink software via the front RS-232 serial interface.
7. Frequently Asked Questions (FAQ)
Q: Is this Woodward 8280-423 unit genuinely new? A: Yes, this item is a Brand New Surplus unit. It has never been installed in a vessel panel or wired to active engines, and is preserved in static-shielding protective OEM packaging.
Q: What is the main application for the 8280-423 model? A: It is designed specifically for dual-engine marine applications running medium- to high-speed diesel engines (over 100 RPM) where precise load sharing and torsional dampening are required.
Q: What power input voltage does the 8280-423 require? A: This is a low-voltage 723PLUS model requiring 18 to 40 VDC (nominal 24 or 32 VDC) with a 40 W power draw and a 7 A startup surge capacity.
Q: What warranty accompanies this unit? A: Every Woodward 8280-423 control unit comes with a full 1-year replacement warranty and a certified quality inspection report prior to shipment.
