Description
Unboxing & Physical Snapshot
- Brand & Model: Woodward 5501-365, MicroNet High Density Combo I/O Submodule
- Physical Dimensions: 8.5 in W × 4.2 in H × 1.3 in D
- Estimated Shipping Weight: 1.1 lb (packaged with anti-static foam and carton)
- What’s in the Box: I/O submodule, gold-plated edge connector assembly, factory serial inspection tag; terminal hardware and backplane sold separately.
Product Introduction (Structure B: Architecture hook)
This submodule seats into the 5466 series HD Combo chassis and forms the analog signal processing core for Woodward MicroNet TMR turbine control racks. It handles low-level 4–20mA process measurements and proportional actuator drive signals, feeding processed data to the rack’s voting logic for gas and steam turbine governor protection.
Each channel includes dedicated isolation barriers that stop field-side fault currents from propagating into the TMR backplane. (This channel isolation limits fault propagation to a single I/O point during wiring shorts.) The small integrated anodized heatsink dissipates continuous power draw during long-duration base-load operation inside crowded control cabinets.
Core Technical Specifications
| Parameter | Value |
|---|---|
| Platform Compatibility | Woodward MicroNet TMR HD Combo I/O Chassis 5466-253 |
| Nominal Supply Voltage | 24 VDC, operating range 18–32 VDC |
| Analog Input Support | 4–20 mA process measurement signals |
| Actuator Output Type | Proportional drive for hydraulic turbine actuators |
| Communication Interface | Backplane parallel bus to TMR voting processor |
| Operating Ambient Temp | -40 °C to +70 °C |
| Storage Temperature | -40 °C to +85 °C |
| Relative Humidity (operating) | 5% to 95%, non-condensing |
| Construction | FR4 PCB, gold-plated edge connectors, passive heatsink |
Global Compliance & Industry Certifications
- CE Mark
- UL/cUL Listed
- ATEX Class I Div 2 compliant for qualified production lots
- DNV GL marine certification available for offshore power generation packages
The UL/cUL listing verifies PCB trace spacing and material flammability characteristics, preventing arc propagation if a component failure occurs within the submodule. Verify specific lot certifications with OEM.
Long-Term Storage & Asset Preservation Guide
Keep the submodule sealed inside its original ESD shielding bag and rigid shipping carton during shelf storage. Minor electrostatic discharge can degrade the analog front-end and create drifting 4–20mA readings after rack installation.
Inspect electrolytic capacitors every 24 months for assets held longer than three years. Apply controlled voltage reforming if the spare remains in storage past four years; dried electrolyte will reduce actuator output stability under load transients.
Do not stack heavy rack hardware directly on the PCB assembly. Compressive force can bend edge connector pins and fracture fine copper traces hidden under the conformal coating.
Physical Installation Prerequisites
Leave a minimum of 30 mm vertical clearance around the populated HD Combo chassis for convection cooling. Reduced airflow raises junction temperatures and accelerates aging of analog reference components on this submodule.
Push the card fully home until the retaining latch clicks and locks the edge connector into the backplane. Confirm the cabinet instrument ground bus connects to the main chassis lug; floating ground references introduce offset error on analog actuator outputs.
Buyer’s FAQ
Q: What HS tariff code applies to Woodward 5501-365 for cross-border shipments? A: Primary HS classification falls under 853710 for printed circuit control assemblies for power generation equipment. Confirm classification with your customs broker before export filings, as local rulings vary by documentation.
Q: What country of origin is marked on Woodward 5501-365? A: Country of Origin is United States. This marking appears on the module nameplate and must be listed on commercial invoices for cross-border compliance audits.
Q: Does 5501-365 ship preloaded with factory calibration? A: Yes. Factory channel calibration is stored on-board. Site-specific scaling for field transmitters must be configured in the MicroNet control software after rack integration.
Q: Should I purchase all-risk shipping insurance for this spare submodule? A: Yes. Edge pin damage or PCB microcracks from transit shock may only surface after power-up. All-risk insurance covers full replacement value for hidden handling defects.
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