Description
Product Overview
Part Number: 5466-258
Manufacturer: Woodward
Product Series: MicroNet TMR Turbine Control System
Type: TMR High Density Discrete I/O Module
5466-258 is Woodward MicroNet TMR high-density discrete I/O module, designed for triple modular redundant gas/steam turbine and compressor safety interlock control. It provides 48 channels of 24VDC discrete digital input and 24 channels of discrete digital output, handling trip signals, limit switches, relay contact status, solenoid valve and auxiliary relay drive control. It plugs into the MicroNet VME TMR chassis and operates under 2-out-of-3 hardware voting logic for safety-critical turbine protection and interlock loops. Widely used in power generation, oil & gas turbomachinery control as spare parts for plant overhaul, maintenance and retrofit projects.
Technical Specifications
| Item | Parameter |
|---|---|
| Part Number | 5466-258 |
| Module Type | TMR High Density Discrete I/O (HDDIO) |
| Applicable System | Woodward MicroNet TMR Turbine Control |
| Discrete Input | 48 × 24VDC digital input |
| Discrete Output | 24 × discrete digital output |
| Field Voltage | 18 ~ 32 VDC (24VDC nominal) |
| Per Channel Output Rating | 500mA continuous |
| Architecture | TMR triple modular redundant rack design |
| Isolation | Channel-to-channel and channel-to-backplane isolation |
| PCB Coating | Conformal coated for dust, humidity and mild corrosive gas protection |
| Operating Temperature | 0 ~ +55°C |
| Storage Temperature | -40°C ~ +85°C |
| Certification | CE, CSA, Class1 Div2 |
| Weight | Approx 0.86kg |
Engineer Notes
- 5466-258 is TMR high density discrete I/O card for turbine trip and interlock signals. Simplex equivalent module cannot substitute this TMR version.
- 48DI collects field contact status such as emergency stop, vibration trip, valve limit feedback; 24DO drives trip relays, solenoids and alarm indication.
- High speed digital sampling supports fast turbine protection interlock logic, critical for safety shutdown functions.
- Field discrete wiring uses 24VDC, shielded cable recommended for long-distance field wiring to reduce EMI noise.
- Not hot-swappable; full rack power shutdown required before removing or inserting this module.
- Conformal coated PCB improves long-term reliability inside power plant control cabinets.
- Legacy EOL module; replacement part is 5466-1156 Smart-Plus HDDIO module, form-fit compatible upgrade.
- Front panel LED indicators for module run, fault and group channel diagnostics for on-site troubleshooting.
Pre-Shipment Test Protocol
- Visual inspection of PCB, front panel, edge connector, components and part number marking
- All 48 discrete input channel functional test with 24VDC signal simulation
- All 24 discrete output channel switching test and load check
- 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 5466-258 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 5466-258 and 5466-257? A: 5466-258: high density discrete digital I/O (48DI/24DO), for trip/interlock. 5466-257: analog I/O module for 4-20mA /0-10V process measurement and control output.
Q: What is the replacement module for 5466-258? A: The upgraded Smart-Plus version is 5466-1156, form-fit-function compatible for MicroNet TMR rack.
Q: Can 5466-258 be hot swapped while turbine controller running? A: No, non hot-swappable. Must cut off rack power before module replacement.
Start Chat
Send an Email
