Description
Product Datasheet & Technical Parameters
- Brand: WOODWARD
- Model: 8440-1026
- Series: SPM-D21 / SPM-D2 Series (Digital Synchronizer & Load Control)
- Product Name: Synchronizer and Load Control Module
- Manufacturing Origin: United States
- Physical Condition: Brand New / Factory Sealed
- Dimensions: Standard APRANORM DIN 43 700 housing (144 \times 72 \times 122 mm)
- Weight: Approx. 0.8 kg (1.8 lbs)
- Country of Origin: USA
- Power / Input Rating: Multi-voltage auxiliary power support, three-phase AC measuring inputs, analog output for speed/load and voltage/power factor, PWM output for speed/load
Product Overview & Introduction
The WOODWARD 8440-1026 SPM-D21/PSVX is an advanced microprocessor-based digital synchronizer and load control module designed for multi-phase AC generator systems. Engineered to support complex power architectures, it provides automatic frequency, phase, and voltage matching alongside comprehensive load sharing and generator management functions. Featuring specialized analog outputs for speed/load and voltage/power factor, as well as a PWM (Pulse Width Modulation) output for speed/load control, this unit ensures precise regulation, smooth soft-loading, and safe breaker closure in critical industrial environments.
Operational Specifications & Guidelines
Prior to installation, ensure that all electrical power sources, busbars, and control circuits are completely de-energized and locked out to prevent electrical shock or arc flash hazards. Mount the SPM-D21/PSVX module securely into a standard front-panel cutout using an APRANORM DIN housing layout, ensuring appropriate environmental sealing and ventilation clearances. Connect the AC voltage sensing lines, current transformers, auxiliary control power, discrete inputs, analog output lines (speed/load and voltage/power factor), and PWM speed/load output lines strictly in accordance with the manufacturer’s wiring schematics. Verify all terminal torques and system grounding integrity prior to restoring power. System parameters can be configured directly through the front-panel HMI keypad and display or via Woodward’s standard software toolkit.
Startup & Shutdown Sequencing
To prevent breaker tripping, out-of-phase synchronization, or system instability, operators must strictly follow the defined startup and shutdown procedures.
- Startup Sequence:
- Verify all external wiring, potential transformer (PT) inputs, current transformer (CT) connections, control power, and safety interlocks are securely fastened.
- Energize the control power supply to the WOODWARD 8440-1026 module and observe the integrated liquid crystal display (LCD) during the internal diagnostic self-test.
- Start the prime mover and allow it to reach rated nominal speed and thermal stability under governor control.
- Enable the synchronizer module to monitor generator, busbar, and mains voltages, frequencies, and phase angle relationships.
- Engage the automatic synchronizing and load-control mode, allowing the device to execute precise analog and PWM speed/load adjustments, issuing the close command to the circuit breaker precisely at the synchronous point.
- Shutdown Sequence:
- Gradually transfer active electrical load away from the generator set back to the main utility grid or companion units until minimum baseline load is reached.
- Open the generator circuit breaker manually or via system command to isolate the unit electrically from the busbar.
- Initiate the prime mover cool-down cycle at idle speed for the required manufacturer-specified duration.
- Issue the stop command to shut down the engine or turbine completely.
- De-energize the auxiliary control power to the module only after the prime mover has come to a complete standstill.
Frequently Asked Questions (Q&A)
- Q1: What specialized output features are included with the WOODWARD 8440-1026 SPM-D21/PSVX?
- A1: This model includes dedicated analog outputs for speed/load and voltage/power factor control, as well as a Pulse Width Modulation (PWM) output for speed/load regulation.
- Q2: Can this module handle both synchronization and load control simultaneously?
- A2: Yes, the SPM-D21 series combines fully automatic synchronizer capabilities with comprehensive real power (kW) load control and sharing functions in a single hardware unit.
- Q3: How are operational parameters configured on this device?
- A3: Parameters can be adjusted directly via the front-panel Liquid Crystal Display (LCD) and keypad interface or configured remotely using Woodward’s software toolkit.
