Product Overview
The Woodward 5466-258M is a simplex, high-density discrete input/output module belonging to the Woodward 5466 MicroNet Digital Control series. The trailing letter in the part number denotes revision level M; the module label reads “MODULE — SIMPLEX DISCRETE I/O,” confirming that the Woodward 5466-258M is a 48-input / 24-output discrete combo module rather than a CPU or control processor. It is manufactured by Woodward in Fort Collins, Colorado, and is intended for use in MicroNet Digital Control and MicroNet Plus hardware environments as well as Vertex-Pro chassis.
The primary role of the Woodward 5466-258M is to provide the on/off signal interface between a MicroNet controller and field switching devices. Its 48 discrete inputs accept dry-contact and voltage-level signals from limit switches, valve-position contacts, pressure switches, emergency-stop buttons, and alarm relays. The 24 discrete outputs drive contactors, solenoid valves, annunciator lamps, and other industrial loads. All inputs are optically isolated, which blocks ground-loop currents and field-side voltage transients from reaching the controller backplane. Power is drawn from the 18–32 VDC control supply, with a requirement of 6.5 W at 24 VDC.
In a MicroNet system, the Woodward 5466-258M occupies a single chassis slot and communicates with the controller across the chassis backplane; it is not a standalone programmable controller. The module can be deployed in either simplex or redundant architectures and fits both 8-slot and 14-slot chassis. Field wiring is terminated at discrete Field Terminal Modules (FTMs), which connect to the module through high-density discrete/analog cables. A single red FAULT LED on the front faceplate provides immediate visual indication of a module-level problem.
Because the 5466-258 base model has been discontinued by the original equipment manufacturer, the Woodward 5466-258M is now supplied through new-surplus, refurbished, and repair channels. Its value lies in keeping existing MicroNet and Vertex-Pro installations operational: the module is form-, fit-, and function-compatible with the installed base and does not require application software changes, recompilation, or recalibration.
Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | 5466-258M |
| Base Model | 5466-258 (Revision M) |
| Manufacturer | Woodward |
| Product Type | Simplex Discrete Input/Output (48/24) Module |
| Product Series | 5466 MicroNet Digital Control / MicroNet Plus |
| Compatible Chassis | Vertex-Pro chassis; MicroNet Digital Control / MicroNet Plus 8-slot and 14-slot racks |
| Discrete Inputs | 48 channels, optically isolated |
| Discrete Outputs | 24 channels |
| Input Signal Types | Dry-contact and voltage-level discrete (24 VDC field logic) |
| Output Type | Discrete output (24 VDC load-side switching) |
| External Supply Voltage | 18–32 VDC |
| Nominal Supply Voltage | 24 VDC |
| Power Required | 6.5 W at 24 VDC |
| Response / Update Behavior | Discrete update cycle in the 5 ms range |
| Input Isolation | Optical isolation between field side and control common |
| Fault Indication | 1 × red FAULT LED on front faceplate |
| Addressing | Node address set by two rotary switches (ones and tens) |
| Field Wiring Interface | 2 × 24/12 discrete FTMs connected via 2 high-density discrete/analog cables |
| Chassis Insertion | Card guides; top and bottom mounting screws; two handles for backplane engagement and withdrawal |
| Module Connectors | 2 connectors on module |
| Configuration Support | Simplex and redundant system architectures |
| Operating Temperature | 0 °C to +55 °C |
| Storage Temperature | -40 °C to +105 °F |
| Humidity | 5 % to 95 % RH, non-condensing |
| Air Quality / Pollution Degree | Pollution Degree 2 |
| Installation Overvoltage Category | Category II |
| Hazardous Location Suitability | Non-hazardous locations, or Class I, Division 2, Groups A/B/C/D |
| Certifications / Approvals | UL, ATEX, CE (EMC), DNV, ABS, LRS, IL (intrinsically safe, configuration-dependent) |
| Dimensions | 265 × 120 × 45 mm |
| Weight | 0.86–0.95 kg |
| Lifecycle Status | Discontinued base model; available as new surplus / refurbished / repaired |
