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3. Key Technical Specifications
| Parameter | Value |
|---|---|
| Power Supply | 12/24 VDC (9.5–32 VDC) |
| Intrinsic Consumption | Max. 8–10 W |
| Ambient Operating Temperature | –20 °C to +70 °C |
| Ambient Humidity | 95 % RH, non-condensing |
| Measuring Frequency | 40–70 Hz |
| Voltage Measuring Inputs | Versions for ~63/110 V or 230/400 V rated |
| Voltage Accuracy | Class 1, true RMS |
| Current Measuring | Typically …/5 A (model-dependent) |
| Bias Outputs | Analog or discrete (speed + voltage) |
| Load Share | Two analog lines (active + reactive) |
| Display | Two-line LCD + LED synchroscope |
| Configuration | Front HMI or USB + ToolKit |
| Housing | DIN 43700 panel mount, approx. 144 × 72 × 122 mm |
4. Product Introduction
The Woodward 8440-2165 is the SPM-D2-11 microprocessor-based synchronizer for single- or three-phase AC generators. It performs automatic frequency, phase, and voltage matching to close one circuit breaker, using either analog or discrete bias signals to the speed control and AVR.
It also handles active power and power factor control, isochronous load sharing via two analog lines, and basic generator protection. True RMS sensing reduces harmonic susceptibility. The unit is a drop-in replacement for older SPM-D11 models, offers a front LED synchroscope and two-line LCD, and is configured via HMI or USB with Woodward ToolKit. Password protection is standard.
8440-2165
8440-2165
5. Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to this Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| No display / unit dead | Power supply out of range or reversed | ✅ High | Measure 9.5–32 VDC at supply terminals | Verify polarity and supply before replacing |
| Will not issue close command | Phase or voltage outside window | ✅ High | Watch LED synchroscope and measured values on LCD | Adjust slip/window parameters or correct sensing |
| Speed/voltage bias not working | Output type mismatch (analog vs discrete) | ✅ High | Confirm configured bias type matches governor/AVR | Reconfigure via HMI or ToolKit |
| Load share imbalance | Share lines open or polarity wrong | ✅ High | Check continuity and polarity of both analog share lines | Verify wiring and termination |
| Continuous “not in auto” | Discrete input mode selection wrong | ✅ Medium | Check operating-mode discrete inputs | Set correct mode (Run/Check/Permissive) |
| Communication or config locked | Password or USB issue | ❌ Low | Try front-panel access or known password | Use ToolKit with proper USB cable if needed |
If the unit still fails after these checks, record measured voltages/frequencies, LED status, parameter list, and contact technical support with photos.
6. Frequently Asked Questions (FAQ)
Q: Is the 8440-2165 a direct drop-in for the older SPM-D11?
A: Yes. It is designed as a drop-in replacement with the same look, feel, and mounting. Confirm the exact voltage and CT secondary rating of your existing unit before ordering.
Q: Does it support both phase-match and slip-frequency synchronization?
A: Yes. You can select phase-match or slip-frequency synchronization with voltage matching. Dead-bus closing is also available on demand.
Q: What bias output types are available?
A: The unit can be configured for analog bias (voltage, current, or PWM) or discrete raise/lower contacts for both speed and voltage. Match the output type to your governor and AVR.
Q: Can I configure it without a PC?
A: Yes. Full configuration is possible from the front HMI. For larger parameter sets or multiple units, USB + Woodward ToolKit is faster and supports password protection.
Q: What is the difference between the 100 V and 400 V versions?
A: Part number 8440-2165 is typically the lower-voltage measuring-input version (approx. 63/110 V rated). A higher-voltage counterpart (often 8440-2169) exists for 230/400 V systems. Always verify the data plate and application voltage.
Q: Does it include generator protection?
A: Yes. It includes basic generator protection functions (voltage, frequency, overload, etc.) in addition to synchronization and load-control features. For more advanced protection, pair it with a dedicated protective relay.
Q: Is this unit New Original / New Surplus?
A: Units offered as New Original or New Surplus are genuine Woodward parts that have never been placed in service. They receive full functional testing and carry our standard warranty. Packaging may vary from current production stock.
