Argon user guide/Earthing
From Granite Devices Knowledge Wiki
Connecting a protective earth to Argon drive is the most crucial single connection to be made. Argon has two earthing methods:
- Connect protective earth to J4 PE terminal (always required)
- Connect earthing wire directly to the metal case (highly recommended and may be required by regulations in some countries)
 | Supplying power to the drive without proper earthing will allow leakage current to raise voltage potential of the device case to hazardous levels. Also ELV circuits (the other ports than J4) may become hazardous without earthing. |
Earthing the J4 PE terminal
This is a mandatory connection. Follow the Argon wiring instructions.
Earthing the case
Attaching protective earth wire to the case can provide much lower impedance PE connection compared to the J4 terminal making it highly recommended addition to grounding. Using both methods also provides redundancy in the case of one method fails.
After wiring, verify electrical connection by using a resistance meter between the case PE wire and J4 PE terminal while J4 PE wire is not connected.
