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54 lines
2.3 KiB
Markdown
54 lines
2.3 KiB
Markdown
---
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title: "PoE"
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aliases:
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- tutorials/all/PoE.html
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- tutorials/all/PoE.md
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- chapter/tutorials/all/PoE
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---
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The PyEthernet module offers an optional onboard Power over Ethernet (PoE) power supply circuit. This means that you can power your hardware with only an ethernet cable coming from a power injector or PoE enabled Ethernet switch. However, since the PoE is non-isolated, you must adhere to the following warning!
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{{% hint style="danger" %}}
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WARNING: Before you use the PoE adapter for the first time, please make sure you read and follow the below instructions as failure to do so might damanage your devices!
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{{% /hint %}}
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The PoE power supply integrated in the PyEthernet module with UPC code 604565285911 has no galvanic isolation. This means that in accordance with
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IEEE 802.3-2005 standard, you must <b>NOT</b> connect any other devices / cables / chargers if the GND connection is connected to mains earth!
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This is typically the case with PCs, Oscilloscopes, Logic Analysers, current consumption measurement devices etc.
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Incorrect usages of Power over Ethernet can lead to unrecoverable damage of not only the PyEthernet module but all hardware connected to it.
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A battery can be connected to the PyGate without issues. The battery can be charged either via USB-C or PoE power.
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## Setup Options
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In the following diagram, we clarify what is, and what is not allowed:
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### Power over Ethernet
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| Connection type | OK?|
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|--- |--- |
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|USB-C cable connected to a PC with mains ground protection|NOT OK|
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|USB-C cable connected to a Notebook without mains ground protection|OK|
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|USB-C charger with mains ground protection|NOT OK|
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|USB-C charger without mains ground protection|OK|
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|Oscilloscope / Logic Analyser / Other equipment with mains ground protection|NOT OK|
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|Battery|OK|
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### Power over USB-C / External
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| Connection type | OK?|
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|--- |--- |
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|USB-C cable connected to a PC with mains ground protection| OK|
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|USB-C cable connected to a Notebook without mains ground protection|OK|
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|USB-C charger with mains ground protection| OK|
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|USB-C charger without mains ground protection|OK|
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|Oscilloscope / Logic Analyser / Other equipment with mains ground protection| OK|
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|Battery|OK| |