Glossary term
PSU
cablageBasics
Also known as
Power Supply UnitAlimentation
Definition
Power supply dedicated to the KNX TP1 bus, delivers 30 V DC SELV with integrated choke. Standard capacities: 160 mA, 320 mA, 640 mA. NEVER use to power anything other than the bus.
Questions using this term
- A typical 3-5 year KNX maintenance contract usually includes: an annual preventive visit (PSU check, bus load, vendor firmware updates), curative intervention within 4-24 h depending on SLA, an automatic monthly backup of the ETS project, and an annual parameter review with the client.13. Project best practices · Wartungsverträge
- DALI bus power supplies are typically available at 100, 120, 150 or 250 mA depending on the vendor (ABB BCO/S, Tridonic DALI-PS, Lunatone PS5), and should be sized for the cumulative current of control gear plus input devices, with a 30 percent margin.7. Best practices · Bus-Netzteil
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