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Woodward 5464-414 – MicroNet Digital Speed Sensor Module
Product Overview
The Woodward 5464-414 is a four-channel digital speed sensor module used in Woodward MicroNet control systems. It is designed to acquire speed signals from magnetic pickup units (MPUs) or proximity probes and provide high-resolution speed information to the turbine, compressor, or generator control system. Woodward’s MicroNet documentation identifies 5464-414 specifically as a 4-channel MPU/Proximity module, with the input type factory-selected by part number. It supports MPU frequencies from 50 Hz to 25 kHz and proximity-probe frequencies from 0.04 Hz to 2 kHz. The module provides 16-bit resolution and speed accuracy up to 0.01% over its specified temperature range, making it suitable for critical speed monitoring, governing, synchronization, and protection functions.
Technical Specifications
| Parameter | Value |
|---|---|
| Product Model | 5464-414 |
| Manufacturer | Woodward |
| Product Type | MicroNet 4-Channel Digital Speed Sensor Module |
| Number of Channels | 4 |
| Input Type | MPU / Proximity Probe |
| MPU Frequency Range | 50 Hz to 25 kHz |
| Proximity Input Frequency | 0.04 Hz to 2 kHz |
| MPU Input Amplitude | 1 Vrms min., 25 Vrms max. above 20 Hz |
| Proximity Input | 10 mA |
| Input Impedance | 2000 Ω |
| MPU Isolation | 500 Vrms |
| Resolution | 16 bit |
| Speed Accuracy | 0.01% maximum |
| Temperature Drift | 1 ppm/°C |
| Speed Filter | 5-10,000 ms |
| Derivative Filter | 5-10,000 ms |
| Operating Temperature | -15°C to +55°C |
| Communication / Protocol | MicroNet internal module architecture |
| Mounting | Woodward MicroNet chassis |
| Dimensions (HxWxD) | Verify from the applicable chassis drawing |
| Weight | Verify by hardware revision |
| Typical Interfaces | Four speed-sensor input channels and MicroNet backplane |
| Required Revision | Revision H or later for CPU5200 cyber-security configurations |
Woodward’s official MicroNet documentation confirms the four-channel architecture, signal ranges, 16-bit resolution, filtering, operating temperature, and the Revision H minimum requirement for use with CPU5200 cyber-security hardware.
Woodward 5464-414
Key Features and Benefits
- Four independent speed-sensing channels for turbine and rotating-equipment applications.
- Supports both magnetic pickup and proximity-probe inputs.
- High-resolution 16-bit speed measurement.
- 0.01% maximum speed-accuracy specification supports demanding control applications.
- Configurable speed and derivative filtering helps manage noisy or unstable speed signals.
- Suitable for redundant or critical turbine-control architectures.
- Designed for direct integration with Woodward MicroNet control platforms.
- Appropriate for speed governing, synchronization, load sharing, and overspeed-protection functions.
Personally, I would verify the sensor type before ordering. An MPU and proximity-probe installation may use different electrical characteristics, even though the same module family supports both.
Related Models
5464-015 — Four-channel digital speed-center module within the MicroNet family.
5463-787 — Four-channel digital speed-sensor module from the broader MicroNet I/O family.
5464-658 — Related four-channel MPU/proximity module used in MicroNet configurations.
5464-659 — Another four-channel speed-sensing module with configuration-specific hardware and revision requirements.
Installation and Maintenance
Before replacement, record the installed sensor type, signal amplitude, frequency range, channel assignment, filter settings, and MicroNet chassis position. Verify that the replacement revision meets the controller’s hardware requirements; Woodward specifies Revision H or later for 5464-414 used with CPU5200 cyber-security configurations.
Inspect MPU or proximity-probe wiring for insulation damage, loose terminals, shielding problems, and excessive electromagnetic interference. Verify sensor gap where applicable and confirm the expected frequency signal before commissioning.
After installation, check all four channels independently. Compare measured speed with the plant’s reference instrumentation and confirm that the control system receives stable speed feedback before enabling governing or protection functions.
Product Warranty
Warranty coverage depends on supplier, stock condition, and purchase agreement. Confirm whether the module is new old stock, refurbished, tested used, or surplus, and request the exact hardware revision and functional-test status before procurement.
The Woodward 5464-414 is a critical MicroNet speed-feedback spare, so sensor compatibility, module revision, and channel configuration should be verified before installation.
