Description
Product Overview
The Woodward 8440-1706 is a synchronizer module from the SPM-D11 family. It belongs to the easYgen-3500 Series for paralleling genset control. This unit combines circuit breaker sync, power factor control, and load factor management. You also get isochronous load sharing and generator protection. Choose between phase matching or slip frequency synchronization during voltage matching. The unit supports dead bus operation and isolated operation control.
Key Benefits
– True RMS power calculation reduces harmonic errors – Soft unload feature protects your generator – Peer-to-peer paralleling for up to 32 gensets – LogicsManager™ programmable logic removes need for extra PLC – Works for emergency standby, microgrids, and cogeneration
Technical Specifications (MECE Organized)
Brand & Model
Brand: Woodward
Model: 8440-1706
Series: easYgen-3500 Series & SPM-D11 synchronizer family
Physical Dimensions & Weight
Width: 144 mm
Height: 72 mm
Depth: 122 mm
Weight: 800 grams (1.76 lbs)
Display & Interface
Integrated LCD with two-line display
Shows system diagnostics and alarms
Electrical & Sensing
True RMS voltage and current sensing for generator, bus, and mains
Real power control included
Adjustable power factor setpoint
Control Features
Phase matching or slip frequency synchronization
Dead bus operation
Isolated operation control
Base loading and import/export control
Asymmetrical loading via external base load input
Load Sharing
Proportional load sharing for up to 32 gensets
Works with isochronous or droop mode
Supports different genset sizes in one system
Protection Functions
Fully programmable engine protection
Generator protection functions built-in
Communication
CAN network with SAE-J1939 protocol
Supports proprietary engine OEM protocols
Modbus RTU slave for SCADA
Connects to RP-3500 Remote Panel via CANopen (up to 250m)
Installation Guide
– Mount the unit in a standard 144×72 mm panel cutout – Connect voltage sensing wires to generator, bus, and mains – Set CAN termination if using J1939 network – Configure breaker control: GCB only, GCB+MCB, or external – Use Woodward ToolKit software on a PC for setup
Debugging & Maintenance Convenience
– Two-line LCD shows real-time alarm messages – LogicsManager™ lets you test logic without external tools – RP-3500 remote panel provides full control up to 250 meters away – Soft unload feature prevents mechanical stress during decoupling
Compatibility Notes
– Works with most engine ECUs using SAE-J1939 – Integrates with Modicon Quantum (Modicon Quantum PLCs) via Modbus RTU – Compatible with SCADA or PLC control systems – Use with RP-3500 for remote annunciation
Certifications & Compliance
– CE, UL/cUL, CSA – BDEW (Germany) – ABS and Lloyd’s Register for marine use – Marine package available for extra approvals
Package Contents
– Woodward 8440-1706 synchronizer unit – Panel mounting hardware – Quick start guide on CD or USB – No communication cables included
Warranty & Shipping
Warranty: 12 months from invoice date. Covers factory defects. Excludes damage from wrong wiring or environmental stress.
Shipping carriers: FedEx, UPS, DHL. Express delivery worldwide.
Typical Applications
– Data centers and hospitals (emergency standby) – Oil and gas exploration (islanded prime power) – Remote villages and marine vessels – Military microgrids and government sites – Wastewater treatment with cogeneration (CHP) – Switchgear upgrades to add load sharing
Diagnostic Capabilities
– Two-line LCD shows active alarms and system status – Automatic mains failure (AMF) detection with dead bus close – Soft unload monitoring prevents overload trips – CAN network diagnostics from engine ECU – LogicsManager™ displays internal logic states in real time
Frequently Asked Questions (FAQ)
Q1: What is the main use of 8440-1706?
A: It synchronizes and shares load between multiple generator sets.
Q2: How many gensets can it parallel?
A: Up to 32 gensets in one system, regardless of individual sizes.
Q3: Does it support automatic start on mains failure?
A: Yes. The AMF function detects mains loss and starts the genset automatically.
Q4: Can I use it without a remote panel?
A: Yes. The built-in LCD shows enough data for basic operation.
Q5: What is LogicsManager™?
A: A programmable logic tool inside the unit. It replaces small PLCs for many tasks.
Q6: Experience-based tip: What causes most sync failures?
A: Wrong PT or CT polarity. Always verify voltage and current phase rotation before first close.
Q7: Experience-based tip: How to avoid CAN communication loss?
A: Use dedicated CAN cable. Do not run it next to high-power AC wires. Terminate both ends with 120 ohms.
Q8: Purchasing guide – New surplus or reconditioned?
A: Buy new surplus for critical facilities like hospitals. Reconditioned works for testing or rental fleets.
Q9: Purchasing guide – Which accessories do I need?
A: For remote monitoring, add the RP-3500 panel. For marine use, order the marine package. For SCADA, use Modbus RTU.
Ordering & Selection Guide
– Need load sharing for 2 to 32 gensets? This model fits. – Need remote panel up to 250 meters? Add RP-3500. – Need marine certification? Request the marine package. – Need soft unload and dead bus close? This unit includes both. – Upgrading an old switchgear? This model retrofits easily.
Selection tip: For microgrids with renewable sources, choose this unit because it handles asymmetrical loading. For simple single genset standby, a smaller easYgen model may cost less.
Contact & Support
For inquiries: +86 158 8020 0923 (WhatsApp). We help with technical questions and purchase advice.
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