Description
🔧 Product Overview
The Woodward 5453-277 TMR Power Supply Chassis is designed for Woodward MicroNet TMR control systems. It provides the mechanical housing and electrical interface for the redundant main power supplies used by the MicroNet TMR control system.
According to Woodward documentation, the 5453-277 is specifically identified as the MicroNet TMR Power Supply Chassis and connects to the main chassis using a 5416-977 ribbon cable and a redundant 5417-293 power supply interconnect cable.
The chassis uses a redundant power-supply architecture. With compatible TMR power supplies installed, the system provides multiple separately regulated 24 VDC outputs to the control system. Current-sharing circuitry balances the load between operating supplies and supports replacement of an individual supply without interrupting control operation.
⚙️ Key Features
🔹 Designed for Woodward MicroNet TMR control systems
🔹 Dedicated TMR power supply chassis
🔹 Supports redundant power supply modules
🔹 Provides the interface between the power supplies and main control chassis
🔹 Supports redundant 24 VDC power distribution
🔹 Current-sharing architecture for installed redundant supplies
🔹 Suitable for critical turbine and industrial control applications
🔹 Designed for high-availability control-system configurations
🔹 Compatible with Woodward MicroNet TMR system architecture
📋 Product Datasheet
| Parameter | Specification |
|---|---|
| Brand | Woodward |
| Model | 5453-277 |
| Product Name | TMR Power Supply Chassis |
| Product Type | MicroNet TMR Power Supply Chassis |
| System | Woodward MicroNet TMR |
| Architecture | Triple Modular Redundant (TMR) |
| Power Configuration | Redundant Power Supplies |
| Main Function | Power Supply Mounting & Distribution |
| Main Chassis Connection | 5416-977 Ribbon Cable |
| Power Supply Interconnect | 5417-293 |
| Output Architecture | Six separately regulated 24 VDC outputs |
| Output Rating | 24 VDC, 6 A per output |
| Current Sharing | Supported |
| Power Supply Replacement | Hot replacement supported with compatible configuration |
| Application | Industrial / Turbine Control |
| Manufacturer | Woodward |
| Condition | New Surplus |
Important: The 5453-277 is the chassis, not the individual power supply module. Woodward lists separate MicroNet TMR power supply modules including 5501-370, 5501-380 and 5501-381. The applicable input voltage therefore depends on the power supply module installed in the chassis.
🔌 Compatible Power Supply Modules
Woodward documentation identifies the following MicroNet TMR power supply modules:
- 5501-370 — MicroNet TMR Power Supply, 24 VDC Input
- 5501-380 — MicroNet TMR Power Supply, 120 VAC/VDC Input
- 5501-381 — MicroNet TMR Power Supply, 220 VAC Input
- 5466-1049 — MicroNet TMR Kernel Power Supply, used with CPU5200
The correct module should be selected according to the system’s incoming power requirements and existing MicroNet configuration.
🏭 Application Areas
The 5453-277 is used in control systems where redundant power architecture is required for continuous operation.
Typical applications include:
- Steam turbine control
- Gas turbine control
- Generator control
- Compressor control
- Industrial power generation
- Oil and gas equipment
- Critical process control
- Turbomachinery control
- Industrial automation systems
- High-availability control systems
Woodward MicroNet TMR systems are used in turbine control applications where redundant architectures can improve system availability and allow online maintenance of selected components.
🛠️ Installation & Replacement Notes
Before replacing a 5453-277, verify the complete MicroNet TMR configuration rather than checking only the chassis part number.
Recommended checks include:
- Verify the chassis part number.
- Record the part numbers of all installed power supply modules.
- Confirm the incoming system voltage.
- Inspect the chassis connectors and power interfaces.
- Check the condition of the ribbon-cable connection.
- Verify the redundant power-supply interconnect.
- Confirm proper cabinet grounding.
- Check the power-supply status LEDs after installation.
- Verify all 24 VDC outputs before returning the system to normal operation.
- Review system diagnostics after startup.
Woodward documentation describes the main TMR power supplies as redundant units with load-sharing circuitry and dedicated health indicators for operating status, input fault, overtemperature, and power-supply fault.
❓ FAQ
Q: What is the Woodward 5453-277?
A: It is a MicroNet TMR Power Supply Chassis designed to house and interface with redundant power supply modules.
Q: Is 5453-277 a standalone power supply?
A: No. It is the power-supply chassis. The actual power conversion is performed by the compatible power supply modules installed in the chassis.
Q: What power supplies can be used with the 5453-277?
A: Woodward lists MicroNet TMR power supply modules such as 5501-370, 5501-380 and 5501-381 for the TMR system.
Q: What is the purpose of the redundant power supplies?
A: The redundant configuration allows the control system to continue receiving power if one supply requires replacement or develops a fault.
Q: Does the system support load sharing?
A: Yes. The MicroNet TMR power-supply architecture uses current-sharing circuitry to balance the load between operating supplies.
Q: Can a power supply be replaced while the system is operating?
A: Woodward documentation states that the current-sharing design supports hot replacement of a power supply without disrupting control operation, when the system is configured with the appropriate redundant supplies.
Q: What cable connects the power chassis to the main chassis?
A: Woodward specifies the 5416-977 ribbon cable for the main chassis connection and 5417-293 for the redundant power-supply interconnect.
Q: What should I check before ordering a replacement?
A: Check the chassis part number, installed power supply part numbers, system input voltage, cable configuration, and the existing MicroNet TMR system configuration.
🔄 Recommended Woodward Models
- 5453-277 – MicroNet TMR Power Supply Chassis
- 5453-279 – MicroNet TMR Chassis
- 5453-759 – MicroNet Plus 14-Slot Chassis
- 5453-829 – MicroNet Plus 8-Slot Chassis
- 5501-370 – MicroNet TMR Power Supply, 24 VDC Input
- 5501-380 – MicroNet TMR Power Supply, 120 VAC/VDC Input
- 5501-381 – MicroNet TMR Power Supply, 220 VAC Input
- 5466-1049 – MicroNet TMR Kernel Power Supply
- 5466-1247 – MicroNet TMR CPU5200 Shared RTN Module
- 5466-1051 – MicroNet TMR 48/24 HDDIO Smart-Plus Module
📦 Inspection Before Shipment
For industrial spare-parts applications, the 5453-277 should be inspected for:
- Correct part number
- Nameplate and identification labels
- Chassis mechanical condition
- Connector condition
- Power-supply mounting interfaces
- Signs of corrosion or contamination
- Damaged or bent connector pins
- Condition of the rear interface
- Compatibility with the customer’s MicroNet TMR configuration
For replacement projects, matching the complete power-supply configuration is recommended because the 5453-277 chassis itself does not determine the system’s input-voltage specification.
