Woodward SPM‑D11 8440‑1666/E Load‑Share Controller

The Woodward SPM‑D11 (8440‑1666/E) is a microprocessor‑based synchronizing and load‑sharing controller for single‑phase and three‑phase generator sets. It automatically matches frequency, phase angle and voltage between generator and busbar, and outputs bias signals to speed governors and voltage regulators for smooth paralleling operation.

This panel‑mount unit integrates active/reactive load sharing, power‑factor control and generator protective functions, equipped with LCD local display and multi‑level password protection. It serves as key aftermarket spare for maintenance, overhaul and retrofitting of industrial standby power plants, marine power systems and cogeneration units.

Main Specifications

• Brand: Woodward; Model:SPM‑D11 8440‑1666/E; Type: Generator Synchronizer & Load‑Share Controller
• Power Supply: 9.5‑32 VDC; Measuring Voltage: configurable AC input; Frequency range:40‑70 Hz
• Interface: Analog I/O, relay outputs, CT current sensing input, front‑panel LCD display
• Function: Auto synchronization, circuit‑breaker closing control, active/reactive load sharing, power‑factor regulation, generator protection
• Feature: True‑RMS power calculation, soft unloading, multi‑mode operation, password‑protected parameter setting
• Installation: Panel flush‑mount installation for generator control cabinet
• Operating Environment:‑20℃ ~ +70℃, 5%‑95% RH non‑condensing
• Certifications: CE compliant for industrial power‑generation control applications

Core Functions

• Detect generator and bus‑bar voltage, frequency and phase, complete automatic synchronization before breaker closure.
• Output bias adjustment signals to governor and AVR to realize active and reactive power sharing among parallel gensets.
• Support soft unloading, power‑factor control and power‑limit protection for multi‑generator parallel running conditions.
• Implement generator over/under‑voltage, over/under‑frequency and reverse‑power protective logic with relay alarm output.
• Local parameter configuration, status monitoring and fault alarm indication via front‑panel LCD and keys.
• Support dead‑bus closing, island‑mode frequency‑voltage control for backup and emergency power‑supply scenarios.

Application Scenarios

• Parallel‑operation control for industrial diesel/gas generator sets, standby power‑plants and marine power systems.
• Synchronization and load‑management unit for Woodward governor‑based generator automation platforms.
• Retrofit and spare replacement of legacy SPM‑D series synchronizer control hardware systems.
• Generator control cabinet overhaul, parallel‑loop debugging and faulty synchronizer‑controller replacement projects.
• Spare‑parts inventory for power‑generation integrators and electrical engineering contractors.

• Global aftermarket spare supply for technical teams maintaining Woodward genset parallel‑control hardware.