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Power HAT

HAT PS AC/DC

Isolated mains supply: 85-500 VAC in, 24 VDC out
Powers a Node UIO stack straight from the mains, with no separate DIN-rail power supply. The wide input range covers single-phase and line-to-line on 230/400 V three-phase, and two 24 V terminals feed field devices such as sensors and transmitters.
Available now. Online shop coming soon.
ModBee HAT PS AC/DC mains power supply board
Overview

What it does

It uses only the supply and ground pins of the HAT headers and passes everything else through, so any other HAT can sit on it.
An external slow-blow fuse rated for the supply voltage is required on the input. Installation must be done by a qualified person, in a suitable enclosure, to AS/NZS 3000. Not suitable for 480 V systems.

Features

  • 85-500 VAC 50/60 Hz or 100-700 VDC input
  • 24 VDC, 800 mA, 20 W, shared between the Node UIO and two output terminals
  • 3000 VAC isolation, class II
  • Short-circuit, overload and over-temperature protection, all self-resetting
  • 1 A resettable fuse on the 24 V output, and a diode that stops back-feed into the stack
Views

Renders

HAT PS AC/DC from the other side
HAT PS AC/DC from above
Specifications

Technical details

Figures from the schematic, the module datasheets and the documentation on GitHub.
Documentation
HAT PS AC/DC specifications
ModuleHIECUBE AP24N20-HV
Input85-500 VAC 50/60 Hz, or 100-700 VDC
Output24 VDC, 800 mA, 20 W
Isolation3000 VAC for 1 minute, class II
Efficiency86 % typical
ProtectionShort circuit, overload (above 150 %), over-temperature; resettable 1 A output fuse; back-feed diode
EMCEN 55032 Class B (module)
ConnectorsMains input (L1, L2/N), 2 x 24 VDC output
Module operating temperature-40 to +70 °C, derated below 100 VAC and outside -25 to +40 °C
Board size55 x 74 mm, stacks on the Node UIO
Software

What runs it

None needed. The Node UIO runs from the HAT's 24 V output as soon as the mains is on.
Downloads

Schematic and documents

Schematic

PDF, Rev v0.001, 85 KB
Download PDF

Documentation

Hardware notes and setup, on docs.modbee.org
Read the docs

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