4 layers65 × 35 mm
FlexiBMS
SimosMCmuffin/FlexiBMS_hardware
Open Source BMS developed by Simo Sihvonen (Simos MCmuffin) with the Esk8 community, for the Esk8 community
209 parts14
2 layers55 × 40 mm
Pdu relay
willbicks/pdu-relay1A 120V AC relay module to safely power down rack mount equipment when not needed.
- Size
- 55 × 40 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 15
- Nets
- 8
- Pads
- 31
- Tracks, vias
- 36, 0
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 25 Feb 2024
- Updated
- 25 Feb 2024
Overview
Pdu relay is an open-source printed circuit board by willbicks, from the willbicks/pdu-relay repository on GitHub, published under the CERN-OHL-W-2.0 licence. It is a 2-layer board of 55 × 40 mm with 15 parts on 8 nets, routed with 36 tracks and 0 vias.
It is built around the IRM-01-5, 1N4448W and BSS84PW(TP). Its parts include 4 connectors, 2 resistors, 1 diode, 1 transistor and 1 switch. It belongs with the home automation and IoT boards of this library.
Main components
3
IRM-01-5
DIP,33.7x22.2mm1 1W 200mA 5V 70% DIP,33.7x22.2mm Power Module/Power Supply ROHSMWPower Module/Power Supply
1N4448W
SOD-1231 Independent 1.25V@150mA 2.5uA 2A 4ns 500mA 500mW 75V SOD-123 Switching Diodes ROHSGuangdong HottechSwitching Diodes
BSS84PW(TP)
SOT-323-55℃~+150℃ 1 P-Channel 1.6V 12pF 130mA 200mW 25pF 45pF 50V 6Ω@5V P-Channel Standalone ±20V SOT-323 MOSFETs ROHSTECH PUBLICMOSFETs
README
README.mdPDU Relay Module
This PDU relay is intended to be retrofit into a standard 19" rack mount PDU, and allows for any subsection of the outputs to be turned on or off based on an external isolated logic input. It provides a relay that energizes the live rail of the PDU only when the logic input is held low, and de-energizes them otherwise. This makes the logic input suitable for any dry contact or open collector output that can sink a few milliamps of current.
In my case, I am using this module in a JG JR PDU to switch on audio amplifiers when a Biamp Tesira DSP detects audio input, and then automatically switch them back off after a period of inactivity to conserve power.
Specifications
Electrical Specifications
This power supply and relay in this module are rated to support:
- 120 - 240 VAC input at 50-60Hz
- 16 A AC load switching (resistive)
The AC input / output terminals are 0.25" x 0.032" spade terminals.
The logic input is a 2.54mm pitch 2-pin screw terminal. Pin 1 is an AC isolated ground, while pin 2 is the active low logic input. To close the relay, pin 2 should be pulled low relative to the ground terminal. Total current draw from the logic input is less than 1 mA.
Mechanical Specifications
The assembled module is 55 mm x 40 mm x ~20mm. It has 4 holes for M3 screws that are 47 mm x 32 mm between centers as shown below.
Source Usage
This repository contains a KiCAD 8.0.0 project with the schematic and PCB layout for the PDU relay module. Gerber files, a BOM, and PDFs of the schematic and PCB layout are available in the releases section of the repository.
Electrical Safety
This unit is intended for reference and evaluation and has not been tested nor certified by any safety agency. It is the responsibility of the user to ensure that the final product meets all applicable safety standards and regulations.
In addition to ensuring that this design meets all applicable safety standards and regulations, the following basic precautions should be taken when installing and using this module:
- The module should be securely mounted in a suitable metallic, grounded enclosure.
- The module should be installed downstream of a suitable overcurrent protection device rated for no more than 16 A.
- The switched terminals should be connected to the live rail of the PDU, and the PDU should have an appropriately polarized plug.
- Connections to and from the module should be made with suitable wire and connectors rated for the intended current and voltage, and which are insulated from accidental electrical contact.
License
Copyright Will Bicks 2024.
This source describes Open Hardware and is licensed under the CERN-OHLW v2 You may redistribute and modify this documentation and make products using it under the terms of the CERN-OHL-W v2 (https:/cern.ch/cern-ohl).
This documentation is distributed WITHOUT ANY EXPRESS OR IMPLIED WARRANTY, INCLUDING OF MERCHANTABILITY, SATISFACTORY QUALITY AND FITNESS FOR A PARTICULAR PURPOSE. Please see the CERN-OHL-W v2 for applicable conditions.
Source location: https://www.github.com/willbicks/pdu-relay
Parts
15| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | M3 Mounting Hole | MountingHole:MountingHole_3.2mm_M3 | H1, H2, H3, H4 |
| 1 | 1N4448W | Diode_SMD:D_SOD-123F | D1 |
| 1 | 470 | Resistor_SMD:R_0805_2012Metric | R1 |
| 1 | 47k | Resistor_SMD:R_0805_2012Metric | R2 |
| 1 | BSS84PW | Package_TO_SOT_SMD:SOT-323_SC-70 | Q1 |
| 1 | EXT_ON | TerminalBlock_TE-Connectivity:TerminalBlock_TE_282834-2_1x02_P2.54mm_Horizontal | J4 |
| 1 | G2RL-1A-E DC5 | Relay_THT:Relay_SPST_Omron_G2RL-1A-E | K2 |
| 1 | IRM-01-5 | Converter_ACDC:Converter_ACDC_MeanWell_IRM-02-xx_THT | PS1 |
| 1 | LOGO | Bicks_Branding:logo_sma | G*** |
| 1 | L_IN | Connector_Spade:Keystone_4966 | J1 |
| 1 | L_OUT | Connector_Spade:Keystone_4966 | J3 |
| 1 | N | Connector_Spade:Keystone_4966 | J2 |
Questions
How big is the Pdu relay PCB?
It measures 55 × 40 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Pdu relay use?
15 parts, built around the IRM-01-5, 1N4448W and BSS84PW(TP). The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Pdu relay KiCad files?
From the willbicks/pdu-relay repository on GitHub, at the commit this page was made from: the board is pdu-relay.kicad_pcb and its schematic pdu-relay.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Pdu relay design in my own project?
Its repository publishes it under the CERN-OHL-W-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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