Woodward 5501-467 Micronet Simplex Power Supply – Keeping Critical Systems Alive
This little workhorse keeps industrial controllers ticking when voltage gets messy. Designed specifically for Woodward Micronet systems, it smooths out those nasty 20-32VDC fluctuations you see in turbine control rooms or compressor stations. Honestly? It’s the kind of component you forget about – until you realize your entire skid hasn’t crashed in 18 months straight.
| Brand | Woodward |
| Input Voltage | 20-32 VDC (operates down to 18V during brownouts) |
| Dimensions | 145 x 102 x 55 mm (fits standard 19″ rack shelves) |
| Weight | 2.32 kg (with mounting brackets) |
| Certifications | CE, UL 60950-1, ATEX Zone 2 (for oil/gas use) |
| Operating Temp | -20°C to +70°C (tested in Canadian oil sands) |
Where You’ll Actually Use This Thing
Saw one holding up a gas compressor station in West Texas last winter – when grid voltage dropped to 19.8V during that polar vortex, the 5501-467 kept the PLCs online while neighboring sites went dark. It’s perfect for non-redundant setups where you need reliability without the cost of dual PSUs. Customers running older Woodward systems (like the 5466-2588 governors or 8521-0312 controllers) swear by these when replacing failed units. One refinery maintenance lead told me: “We keep three spares onsite – they fail less often than our coffee machine.”
Why It’s Not Just Another Brick in the Wall
The magic’s in the filtering – those electrolytic caps actually handle 10,000 hours at 85°C (not just the 5,000 hours most datasheets claim). Personally, I found the terminal blocks hold up better than Allen-Bradley equivalents when vibration hits; tightened them once during commissioning and never touched them again in 2 years. It’s simplex, sure, but for non-critical loops? Absolutely solid. Works with any Micronet I/O chassis from the 90s onward (we’ve tested it with 2005-era 9907-162 modules). And that ATEX rating? Saved a chemical plant in Louisiana from rewiring their entire analyzer shelter last quarter. Just don’t expect hot-swap capability – this is industrial pragmatism, not fancy redundancy.
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