Description
The Woodward 5501-371 (Revision C) is a Field Termination Module (FTM) specifically designed for the MicroNet Simplex control platform. This module serves as the critical interface between field instrumentation—such as Magnetic Pickup Units (MPUs) for speed sensing and various Analog Input/Output (AIO) devices—and the MicroNet digital controller.
As an FTM, it provides robust terminal blocks and signal conditioning circuitry to safely route, protect, and isolate signals before they reach the high-speed processing cards within the MicroNet rack.
Key Technical Specifications
| Parameter | Value/Description |
| Part Number | 5501-371 (Rev C) |
| System Compatibility | Woodward MicroNet Simplex Platform |
| Function | MPU (Speed Signal) & AIO (Analog I/O) Termination |
| Connectivity | High-density terminal block interface |
| Input Support | Magnetic Pickup (Speed), 4–20mA, 0–5V, RTD/TC |
| Safety Features | Overvoltage/Surge protection, Signal isolation |
| Mounting | DIN-rail or chassis mounting within the control cabinet |
| Environment | Hazardous location rated / Industrial Marine-grade |
Recommended Related Models
These components are frequently used in MicroNet Simplex cabinets alongside the 5501-371 FTM to maintain the integrity of the turbine control loop:
- 5466-258: MicroNet CPU-5200 Module (The main processor)
- 5466-1035: Analog I/O Module (The card that cables into the 5501-371)
- 5466-1036: Speed/MPU Interface Module (The speed-sensing partner)
- 5466-231: Power Supply Module
- 5466-662: Digital I/O Module
- 5501-372: Alternative FTM for high-density I/O configurations
- 1712-XXXX: Various Woodward Actuators (Driven by the AIO channels)
- 8923-XXXX: MPU Sensor series (The field device connected to the MPU inputs)
Important Technical Note: The 5501-371 acts as a “gateway” for sensitive signals. If you are experiencing “Speed Signal Erratic” errors or “Analog Input Drifting,” inspect the terminal block connections for oxidation or looseness. Because the MPU inputs handle high-frequency AC signals, the shielding termination on this FTM is vital. Ensure that all cable shields are properly grounded to the FTM chassis ground stud to prevent electromagnetic interference (EMI) from inducing false speed spikes into your turbine control logic.
