Description
Woodward 5453-829 | MicroNet Plus 8-Slot Chassis
Product Overview
The Woodward 5453-829 is a MicroNet Plus 8-slot control chassis designed to accommodate the processing, power, and I/O modules used in Woodward MicroNet Plus control systems. Woodward’s current Industrial Turbine Products Catalog identifies part number 5453-829 specifically as the MicroNet Plus 8 Slot Chassis, while the company’s safety documentation gives the more complete description: “MicroNet Plus 8 Slot, Redund with Smart Fans.”
The Woodward 5453-829 is therefore not a CPU, power-supply module, or field I/O card. It is the physical and electrical platform that holds those modules and provides the internal interconnection required by the MicroNet Plus architecture. The MicroNet Plus family is based on a VME chassis architecture, with the CPU occupying an active chassis slot and I/O modules installed in the remaining positions. The chassis power architecture can support either simplex or redundant power supplies.
For turbine-control maintenance, that distinction matters. A failed chassis can create symptoms that resemble module failures because the chassis provides the mechanical mounting, backplane/interconnection, cooling, and power-distribution infrastructure for the installed control electronics. Woodward documentation identifies 5453-829 alongside the 14-slot 5453-759 and the MicroNet TMR 5453-279, so selecting a replacement requires checking the installed MicroNet architecture rather than matching only the brand and physical appearance.
The 5453-829 is also documented in Woodward safety-system material as part of MicroNet configurations reviewed for IEC 61508 applications. That does not mean the bare chassis independently provides a particular SIL capability; the safety function depends on the complete approved hardware, software, architecture, and application.
Product Introduction
When a MicroNet system develops intermittent module faults, the chassis deserves attention before replacing individual boards. The 5453-829 combines an 8-slot VME architecture with redundant smart-fan cooling and a power arrangement capable of supporting redundant supplies.
For legacy turbine-control systems, this is a chassis-level replacement item rather than a logic-module substitute. The correct comparison is therefore 8-slot MicroNet Plus versus the installed chassis architecture, not simply whether another Woodward VME chassis physically fits.
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Product Model | 5453-829 |
| Manufacturer / Brand | Woodward |
| Product Type | MicroNet Plus Control Chassis |
| Series | MicroNet Plus |
| Chassis Type | 8-slot VME chassis |
| Slot Capacity | 8 slots |
| Cooling | Redundant smart fans |
| Power Supply Arrangement | Simplex or redundant power-supply configuration |
| CPU Architecture | MicroNet Plus CPU installed in chassis |
| I/O Architecture | MicroNet Plus VME I/O modules |
| Application | Industrial turbine and engine control |
| Installation | Panel/bulkhead mounting depending on system configuration |
| Working Voltage | Determined by the installed MicroNet Plus power-supply module; not a fixed chassis input rating |
| Communication Protocol | Determined by installed CPU and communication modules |
| Operating Temperature | Available third-party documentation lists 0 to 55°C; verify against the applicable Woodward manual and chassis revision |
| Protection Rating | Not independently established for the bare chassis |
| Operating Accuracy | Not applicable; chassis/backplane assembly |
| Safety-System Use | Listed by Woodward among MicroNet Plus hardware used in IEC 61508-reviewed safety-system configurations |
Woodward’s official catalog identifies 5453-829 as the MicroNet Plus 8-slot chassis and lists the related 5453-759 as the 14-slot version. The chassis itself does not have a standalone working-voltage specification equivalent to an electronic module; the installed power-supply module determines the system input arrangement.
5453-829
Major Features / Advantages
1. Eight-Slot MicroNet Plus Platform
The primary function of the 5453-829 is to provide eight available chassis positions for the applicable MicroNet Plus hardware. Woodward’s MicroNet documentation describes the platform as a VME-based control system in which the CPU occupies the first active slot and I/O modules use the remaining chassis positions.
That makes the chassis a system-level component. It is not simply a metal enclosure.
2. Redundant Smart-Fan Configuration
Woodward specifically identifies the 5453-829 as an 8-slot chassis with redundant smart fans.
The smart-fan arrangement matters for installed systems because cooling is part of the chassis design. Fan condition, airflow, connectors, and fan-monitoring behavior should be checked when evaluating used or surplus inventory.
A replacement chassis with damaged or mismatched fan hardware should not be treated as equivalent simply because the backplane and slot count appear correct.
3. Simplex or Redundant Power Architecture
MicroNet Plus chassis architecture supports simplex or redundant power supplies. Woodward’s documentation lists separate MicroNet Plus power modules for 24 VDC, 110 VAC/125 VDC, and 220 VAC input applications.
This means the chassis catalog number alone does not tell you what incoming power the complete control system uses. That information comes from the installed power-supply module and system configuration.
4. Supports CPU and I/O Module Integration
The chassis provides the physical and electrical environment for MicroNet Plus CPU and I/O modules. Woodward’s MicroNet manual describes the CPU as being installed in the first active VME position, with I/O modules occupying the remaining slots.
In practical troubleshooting, a chassis fault can therefore affect multiple modules at once. Backplane contacts, power buses, grounding, cooling, and mechanical alignment should be checked before declaring several independent module failures.
5. Used in Turbine Control Systems
The MicroNet platform is designed for industrial control applications, including turbine control. Woodward’s current catalog places the 5453-829 within its MicroNet system modules, cables, and accessories section.
The chassis is also documented in Woodward application and safety-system material for specific MicroNet control configurations.
Related Products
- 5453-759 — MicroNet Plus 14-slot chassis with redundant smart fans; provides greater slot capacity than the 5453-829.
- 5453-279 — MicroNet TMR chassis; belongs to the MicroNet TMR architecture rather than the 8-slot MicroNet Plus configuration.
- 5453-277 — MicroNet TMR power-supply chassis used with the applicable TMR main chassis. Woodward specifies a ribbon cable and redundant power-supply interconnect for this arrangement.
- 5466-1000 — MicroNet Plus power supply with 24 VDC input.
- 5466-1001 — MicroNet Plus power supply for 110 VAC/125 VDC input.
- 5466-1002 — MicroNet Plus power supply for 220 VAC input.
- 5466-1035 — MicroNet Plus CPU5200 processor module used in applicable MicroNet Plus systems.
- 3799-301 — Blank module used to maintain appropriate cooling airflow in applicable chassis configurations.
- 5416-977 — Ribbon cable associated with the MicroNet TMR power-supply chassis connection rather than a direct 5453-829 replacement component.
FAQ
What is the Woodward 5453-829?
It is a MicroNet Plus 8-slot control chassis. Woodward’s documentation specifically identifies it as the 8-slot version with redundant smart fans.
Is the 5453-829 a CPU or I/O module?
No. It is the chassis that houses the CPU, power-supply, and I/O modules. The actual processing and field-signal functions are performed by the modules installed in the chassis.
How many modules can the 5453-829 accommodate?
It provides 8 VME slots. The number of usable positions for a particular function depends on the CPU, power-supply arrangement, blanking requirements, and installed MicroNet Plus hardware.
Can I replace a 5453-829 with the 5453-759?
Not automatically. The 5453-759 is also a MicroNet Plus chassis, but it is the 14-slot version.
If the existing application depends on the 8-slot mechanical arrangement, cabinet dimensions, wiring, or slot allocation, changing chassis size requires an engineering review.
Can I hot-swap the 5453-829?
Do not assume the chassis itself is hot-swappable. Woodward documentation for the MicroNet Plus power modules describes a cold-swap procedure for removing and inserting power modules, with the power off to the module being changed.
A chassis replacement is a much larger intervention and should follow the applicable Woodward shutdown and maintenance procedure.
Does the 5453-829 contain the control program?
No. The chassis is the hardware platform. The control application resides in the applicable MicroNet CPU/control architecture and associated memory/configuration.
When replacing a chassis, preserve the existing CPU and application configuration where the maintenance procedure permits, and verify the complete system before returning the turbine controller to service.
Does the 5453-829 support redundant operation?
Yes, the part is specifically documented as a MicroNet Plus 8-slot chassis with redundant smart fans, and MicroNet Plus chassis architecture supports redundant power arrangements. Redundant CPU operation is a separate system configuration and should not be inferred merely from the chassis catalog number.
How should I verify a New Surplus 5453-829?
Check the complete 5453-829 marking, chassis revision, backplane condition, slot connectors, fan assemblies, power-supply interfaces, mounting hardware, and any available functional inspection records.
Pay particular attention to the fans. A chassis can look clean while having aged bearings, degraded fan electronics, or damaged connectors. For a turbine-control application, those are not cosmetic issues.
New Surplus describes the inventory condition; it does not by itself establish authenticity, compatibility, or operational fitness. Confirm supplier warranty terms and test documentation before procurement.
Procurement Note
The Woodward 5453-829 is a chassis-level MicroNet Plus component, not an electronic control module. Woodward’s own catalog confirms the 8-slot designation, while its safety documentation specifies the redundant-smart-fan configuration.
For replacement purchasing, verify the slot count, chassis revision, fan configuration, installed power-supply type, CPU family, I/O population, and cabinet mounting arrangement. Do not substitute the 14-slot 5453-759 or the MicroNet TMR 5453-279 simply because they belong to the same broader Woodward MicroNet family.
