5464-428 - 4-Channel MPU/Proximity Speed Module

SPECIFICATIONS:

Part Number: 5464-428
Manufacturer: Woodward
Series: MicroNet / NetCon 5000
Product Type: Speed Sensor Input Module
Channels: 4 Independent Channels
Sensor Compatibility: Magnetic Pickup (MPU) or Proximity Probe
Frequency Range: 1.0 Hz to 25,000 Hz
Isolation: 500 Vdc Channel-to-Backplane
Update Rate: 5 ms (Deterministic)
Operating Temperature: -40 °C to +70 °C
Mounting: Chassis / Rack Mounted
Availability: In Stock

FUNCTIONAL DESCRIPTION:

The 5464-428 is a precision 4-channel Speed Sensor Module designed for the Woodward MicroNet and NetCon 5000 control architectures. Its primary role is to provide the Master CPU with high-accuracy rotational speed data, which is essential for governing gas turbines, steam turbines, and large reciprocating engines. By translating analog frequency pulses from the field into digital data, the 5464-428 enables the control system to maintain stable engine speeds, manage load-sharing, and execute critical synchronization sequences.

PRECISION AND SIGNAL FIDELITY:

Designed for high-reliability prime mover control, the Proximity Speed Module handles an extensive frequency range from 1.0 Hz up to 25,000 Hz. This versatility allows the module to monitor equipment from the very first movement of the shaft through to maximum operational RPM. Each of the four channels features dedicated hardware filtering to suppress electromagnetic interference (EMI) and signal noise, ensuring that the speed data remains stable even in the harsh electrical environments found in power plants and industrial facilities.

INDUSTRIAL PROTECTION AND DIAGNOSTICS:

The Proximity Speed Module provides 500 Vdc galvanic isolation between the field-side sensors and the system backplane. The module is equipped with advanced onboard diagnostics that continuously monitor for signal integrity. It can detect common field faults such as:

• Open Circuits: Identifying broken wiring to the MPU.
• Signal Loss: Detecting a lack of frequency when the machine is expected to be rotating.
• Out-of-Range Signals: Identifying erratic pulses that could indicate a loose sensor.

These diagnostics are updated at a 5 ms rate, allowing the Master CPU to immediately trigger alarms or switch to a redundant speed channel if a primary sensor fails.

AVAILABILITY AND SUPPORT:

World of Controls maintains a stock of the 5464-428 Speed Module in both unused and fully refurbished conditions to support emergency replacements and long-term system life extension. Every unit undergoes rigorous frequency-response testing across all channels to ensure it meets original manufacturer specifications. Our global technical support team is available 24/7 to assist with wiring verification, sensor compatibility, and GAP configuration. Contact us today for a quote or to learn more about our exchange program for Woodward hardware.

FREQUENTLY ASKED QUESTIONS:

What is the Woodward 5464-428?

It is a 4-channel speed sensing module for MicroNet and NetCon 5000 systems. It monitors machine RPM using Magnetic Pickups (MPU) or Proximity Probes to facilitate precise governing and overspeed protection.

Can I use different types of sensors on the same module?

Yes. The 5464-428 is designed to be flexible, allowing individual channels to be configured for either passive Magnetic Pickups or active Proximity sensors, depending on the hardware requirements of the turbine or engine.

Does this module support Sequence of Events (SOE) logging?

While its primary role is speed governing, its high-speed deterministic update rate allows the control system to accurately log speed-related events for post-trip analysis.