Woodward 5453-277 | MicroNet TMR Power Supply Chassis

Description

• Model: 5453-277
• Brand: Woodward
• Series: MicroNet TMR
• Part Type: TMR Power Supply Chassis with redundant-fan provision
• Primary Function: Mechanical and electrical chassis for the MicroNet TMR power-supply section
• Approx. Dimensions: 15.00 × 13.25 × 6.50 in (secondary inventory reference; confirm against the physical unit before freight booking)
• Approx. Shipping Weight: 9.11 lb / 4.13 kg reported by secondary inventory sources; actual packed weight should control the freight quote
• Power-Supply Modules: Compatible MicroNet TMR supplies include 5501-370, 5501-380, and 5501-381
• Chassis Connection: 5416-977 ribbon cable to the main chassis plus redundant 5417-293 power-supply interconnect cable
• Fans: Redundant fan arrangement
• What’s in the Box: Chassis assembly only unless the PO explicitly includes installed power supplies, cables, fans, mounting hardware, or documentation
• Important Receiving Check: Do not classify the chassis itself as a complete power-supply module; Woodward lists the chassis and power-supply modules as separate items.

Product Introduction

Structure B — Architecture Hook

The Woodward 5453-277 sits in the MicroNet TMR architecture as the dedicated power-supply chassis, separate from the main MicroNet TMR chassis. Woodward’s current industrial products catalog specifies that it connects to the main chassis using 5416-977 and the redundant 5417-293 power-supply interconnect cable. The catalog also separately lists the compatible MicroNet TMR power-supply modules, including 5501-370 for 24 VDC input, 5501-380 for 120 VAC/VDC input, and 5501-381 for 220 VAC input.

That distinction matters during warehouse receiving. A 5453-277 replacement preserves the chassis architecture, but it does not establish which input-voltage power supplies are fitted. The chassis therefore should be purchased, received, and documented independently from the installed power modules (a critical point for asset traceability). Woodward’s current catalog continues to identify 5453-277 within the MicroNet TMR hardware family, while the MicroNet safety documentation also includes 5453-277 in its list of hardware reviewed for IEC 61508 compliance under specified system conditions.

Core Technical Specifications

Woodward explicitly separates the 5453-277 chassis from the individual power supplies in its current catalog.The listed dimensions and weight are secondary inventory figures and should not replace a physical measurement for export packing, especially when foam, double-wall cartons, or a shock frame is added.

Woodward 5453-277

🚨 Global Compliance & Industry Certifications

The compliance position for 5453-277 needs to be stated carefully because the chassis is part of a larger MicroNet TMR safety/control architecture.

• IEC 61508: Woodward’s MicroNet safety manual lists 5453-277 among the MicroNet Plus and TMR hardware reviewed by a third party for compliance with IEC 61508 Parts 1–7. The manual also states that the listed hardware is subject to specified redundancy conditions.
• CE Mark: May apply to the complete MicroNet equipment configuration and applicable market version. Do not make a standalone CE claim from the part number alone.
• UL/cUL: Certification may depend on the complete assembly and installed power-supply configuration. Verify the physical nameplate and applicable certification documents.
• ATEX/IECEx: Do not assume hazardous-area approval for the chassis. Hazardous-location status depends on the complete certified control-system configuration and installation conditions.
• Marine approvals: No specific DNV approval for 5453-277 was established from the accessible Woodward documentation.
• Safety significance: IEC 61508 evidence matters because it establishes a functional-safety framework for safety-related control hardware; however, certification does not automatically transfer across arbitrary module combinations or installation practices.
• Audit package: Keep the part number, serial number, nameplate photograph, applicable certificate, configuration record, and supplier COO documentation together.

Verify specific lot certifications with OEM.

🚨 Long-Term Storage & Asset Preservation Guide

Protect the chassis and fan assemblies from dust first. The 5453-277 is not just a passive sheet-metal enclosure; its cooling arrangement is part of the MicroNet TMR power architecture. Store it in a clean, dry cabinet or sealed crate where airborne dust cannot accumulate in fan openings.

Retain all original identification labels. Do not remove Woodward labels, revision markings, or serial-number plates during cleaning. For long-lived spares, those markings become the evidence needed to establish exact hardware identity years after the original purchase.

Keep mating cables and installed accessories controlled. If the chassis is stored together with the 5416-977 and 5417-293 cables, bag and label them separately so connector damage does not occur during handling. Use ESD-safe packaging for any electronic power-supply modules stored with the chassis (the chassis itself is primarily mechanical/interconnection hardware).

Avoid repeated fan operation simply for inventory checks. Periodic visual inspection, connector inspection, corrosion screening, and packaging checks are preferable to unnecessary energized testing. For shelf stock exceeding several years, inspect fan bearings and connectors before putting the assembly into service.

Physical Installation Prerequisites

• System Location: Install the 5453-277 as the designated MicroNet TMR power-supply chassis associated with the main chassis; it is not a replacement for the 5453-279 MicroNet TMR main chassis.
• Main-Chassis Connection: Confirm the 5416-977 ribbon cable is correct, fully seated, and free from damaged contacts.
• Redundant Interconnect: Verify the two-way/redundant 5417-293 power-supply interconnect arrangement before commissioning.
• Power-Supply Match: Confirm the installed supply module—5501-370, 5501-380, or 5501-381—matches the plant input voltage.
• Cooling: Keep fan inlets and exhaust paths unobstructed. Do not route cable bundles directly across fan openings.
• Service Access: Leave sufficient room to remove an individual power-supply module and reach the rear cable connections without disturbing adjacent wiring.
• Grounding: Bond the chassis and cabinet according to the MicroNet installation drawing and plant protective-earth requirements.
• Mechanical Security: Use the specified chassis mounting hardware and verify that the assembly cannot shift under fan vibration or cable strain.
• Environmental Control: Avoid conductive dust, oil mist, condensation, and corrosive atmospheres inside the control cabinet.

Woodward’s current documentation confirms the 5453-277 is the power-supply chassis and separately identifies the main MicroNet TMR chassis as 5453-279.

Buyer’s FAQ

Q1. What HS tariff code should be used for Woodward 5453-277?

Do not assign an HS code from the word “power supply” alone. 5453-277 is a chassis, while the 5501-series items are the actual power-supply modules. A provisional classification may fall under the heading for electrical control-panel or power-distribution apparatus, but the final tariff classification depends on the shipped configuration and customs jurisdiction.

For the commercial invoice, use a precise description such as “Woodward MicroNet TMR Power Supply Chassis, Part No. 5453-277” and have the importer or customs broker confirm the final HS classification.

Q2. What Country of Origin should appear on the COO?

Use the actual manufacturing origin of the physical chassis being shipped. Do not infer COO solely from the Woodward corporate location or from a previous shipment. Secondary inventory records identify U.S. manufacture for this part, but the receiving file should still be supported by the actual nameplate and supplier-origin documentation.

Q3. Should I insure a 5453-277 shipment?

For a legacy MicroNet TMR chassis, shipment insurance is prudent, especially where replacement stock is limited. The fan assemblies, connector interfaces, and chassis mounting structure should be photographed before packing; protect the mounting ears and connector areas against impact, then use rigid internal bracing rather than allowing the unit to move inside the carton.

Q4. Does 5453-277 include the latest firmware or software?

No. The 5453-277 is a power-supply chassis, not a CPU or software-bearing control module. Firmware and application software reside in the associated MicroNet controller modules. Woodward’s current catalog lists the chassis separately from CPU and communication modules.

Q5. Is the 5453-277 supplied with power modules?

Not automatically. Woodward’s catalog lists 5453-277 as the chassis and separately lists 5501-370, 5501-380, and 5501-381 as MicroNet TMR power supplies. Therefore, the PO should explicitly state whether the shipment is chassis-only or includes installed power-supply modules.