Product Overview
The Woodward 5466-258M is a high-density simplex discrete input/output module engineered for Woodward’s MicroNet Digital Control series, including MicroNet Plus and Vertex-Pro turbine control platforms. As a 6U VME-compliant card, the Woodward 5466-258M consolidates 48 optically isolated discrete inputs and 24 relay outputs into a single module slot, making it an exceptionally efficient interface for turbine interlocks, sequence-of-events recording, and auxiliary device control in power generation and industrial automation environments. The module is designed for simplex (non-redundant) architectures, providing reliable discrete signal processing where triple modular redundancy is not required.
In the MicroNet control architecture, the Woodward 5466-258M operates at the field interface layer, plugging into standard 8-slot or 14-slot VME backplanes alongside the main CPU and communication modules. It communicates over the VME bus to exchange discrete status and command data with the rack controller, receiving on/off commands, interlock trip signals, and configuration data from the CPU while interfacing with field devices such as limit switches, pressure switches, emergency stop buttons, solenoid valves, and motor starters. Optical isolation on the input channels and relay isolation on the output channels provide electrical separation between the control rack and field wiring, preventing ground loops and protecting the system from voltage spikes.
The Woodward 5466-258M represents a mature, field-proven solution for discrete signal management within the Woodward ecosystem. Although this model has reached end-of-life status, it remains widely deployed in existing turbine and compressor control systems, and new surplus inventory continues to serve as critical spare parts for facilities seeking to extend the operational life of their control infrastructure without undertaking full system migrations.
Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | Woodward 5466-258M |
| Manufacturer | Woodward |
| Product Type | Simplex Discrete I/O Module |
| System Platform | MicroNet Plus, MicroNet TMR, Vertex-Pro |
| Form Factor | 6U VME bus compliant |
| Digital Inputs | 48 channels, optically isolated |
| Digital Outputs | 24 channels, relay type |
| Input Voltage | 18–32 VDC nominal (24 VDC typical) |
| Output Rating | 24 VDC @ 0.5A per channel |
| Power Consumption | 6.5 W @ 24 VDC |
| Isolation | Channel-to-backplane optical (inputs); relay (outputs) |
| Operating Temperature | 0°C to +55°C |
| Storage Temperature | -40°C to +105°F |
| Dimensions | 16 cm × 16 cm × 12 cm |
| Weight | 0.8 kg |
| Mounting | MicroNet/Vertex-Pro chassis |
| Hot-Swap | Supported |
| Certifications | UL, ATEX Class I Div 2, DNV, ABS, LRS |
