Description
Product Overview
Part Number: 5466-257
Manufacturer: Woodward
Product Series: MicroNet TMR Turbine Control System
Type: TMR High Density Analog I/O Module
5466-257 is Woodward MicroNet TMR high-density analog I/O module, designed for triple modular redundant gas/steam turbine and large compressor control systems. This board handles analog process signal acquisition and control output. It can be configured as 16 single-ended analog inputs or 8 differential analog inputs; analog outputs support 8 single-ended or 4 differential channels, plus 8 built-in discrete digital input channels for auxiliary status monitoring. It accepts 4-20mA / 0-10V analog signals from transmitters and outputs 4-20mA control signals to field valves and actuators. Installed in MicroNet TMR VME rack and works under TMR triple voting logic. Widely used in power generation, oil & gas plants for turbine control spare parts, system overhaul and retrofit.
Technical Specifications
| Item | Parameter |
|---|---|
| Part Number | 5466-257 |
| Module Type | TMR High Density Analog I/O |
| Applicable System | Woodward MicroNet TMR |
| Analog Input | 16 single-ended / 8 differential |
| Analog Output | 8 single-ended / 4 differential |
| Discrete Input | 8 digital auxiliary input channels |
| Signal Type | 4–20mA, 0–10VDC |
| ADC/DAC Resolution | 16-bit high precision |
| Architecture | TMR triple modular redundant rack design |
| PCB Coating | Conformal coated, anti-humidity and dust protection |
| Operating Temperature | 0 ~ +55°C |
| Storage Temperature | -40°C ~ +85°C |
| Certification | CE, CSA |
| Weight | Approx 0.75kg |
Engineer Notes
- 5466-257 is TMR high density analog I/O module, used in triple redundant MicroNet rack. Not interchangeable with simplex analog modules.
- Differential input mode is recommended for noisy field sites to suppress common-mode interference from long instrument cables.
- The 8 onboard discrete inputs are for auxiliary contact status monitoring only, not high-speed interlock signals.
- Field analog wiring must adopt shielded twisted pair cable; single-point grounding of cable shield following Woodward EMC requirements.
- Not hot-swappable; full rack power shutdown required before removing or inserting the module.
- Conformal coated PCB improves reliability in power plant cabinets with dust, humidity and mild corrosive gas.
- End of original production, only available as spare inventory for legacy MicroNet TMR turbine control maintenance.
- Front panel LED indicators for module run, fault and channel diagnostics for quick field troubleshooting.
Pre-Shipment Test Protocol
- Visual inspection of PCB, front panel, edge connector, components and part number marking
- Analog input accuracy test for all AI channels (4-20mA / 0-10V)
- Analog output calibration test for all AO channels
- 8 discrete input channel functional test
- Front panel LED indicator verification
- Backplane edge connector continuity and insulation resistance test
- Hardware revision and label verification
- Anti-static & shockproof packaging inspection
Buyer FAQ
Q: Is Woodward 5466-257 new original? A: We supply brand new original Woodward units, 12-month warranty, factory test certificate available on request.
Q: What is the difference between 5466-257 and 5466-253? A: 5466-257: high density analog only module (AI/AO + DI). 5466-253: HD Combo I/O with MPU speed input and proportional actuator valve drive, for turbine governing.
Q: What signal types does 5466-257 support? A: 4-20mA and 0-10V analog signals, plus 8 auxiliary discrete digital inputs.
Q: Can 5466-257 be hot swapped online? A: No, it is non hot-swappable. Rack power must be cut before replacement.
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