Description
Product Overview
Woodward 5501‑372 REV‑B triplex high‑density analog I/O module is designed for Woodward MicroNet TMR fault‑tolerant control system. It performs analog signal acquisition and control output for turbine units. Adopts 2‑out‑of‑3 voting triplex architecture, system keeps running under single‑point fault. It collects pressure, temperature and speed sensor signals, outputs 4‑20mA /0‑10V signals to drive servo actuators, with on‑board self‑diagnosis and galvanic isolation. Widely used as replacement spare parts for high‑reliability turbine control in power plant and offshore oil‑gas site。

Technical Specifications
| Item | Specification |
|---|---|
| Model | 5501‑372 REV‑B |
| Brand | WOODWARD |
| Compatible System | MicroNet / MicroNet‑Plus TMR Triplex Redundant Governor System |
| Module Type | Triplex High‑Density Analog I/O Module |
| Power Supply | 24V DC, 18‑32VDC wide range |
| Analog Input | 0‑5V /0‑10V /4‑20mA configurable,16‑bit resolution |
| Analog Output | 4‑20mA /0‑10V for hydraulic servo actuator drive |
| Redundancy Mode | TMR triplex, 2‑of‑3 voting logic |
| Communication | RS485 Modbus RTU, CANbus |
| Operating Temperature | -40℃ ~ +70℃ |
| Hardware Revision | REV‑B |
| Mounting | Rack‑mount for control cabinet |
| On‑board Function | Open‑circuit detection, channel fault diagnosis, LED status indicator |
| Accuracy | ±0.1%FS |

Key Features
- TMR triplex 2‑of‑3 voting architecture, system continuous operation with single‑point fault for critical unit safety
- High‑density multi‑channel analog I/O for gas turbine & compressor governor control
- Galvanic channel isolation, wide temperature & anti‑vibration for power station and offshore oil‑gas harsh environment
- Modbus RTU & CAN bus interface for remote SCADA configuration and fault diagnostics
- REV‑B hardware revision, direct drop‑in replacement, compatible with simplex and TMR MicroNet‑Plus cabinet
Application
Gas turbine, steam turbine, reciprocating compressor, generator set, offshore oil‑gas platform, pipeline skid equipment, spare parts for TMR turbine control system.









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