Inverter System Interference Troubleshooting - Salicru CV50-008-4F User Manual

8.6.8 Overcurrent

8.7 Inverter system interference troubleshooting

If there are sensitive devices in the installation as PLC, PC, sensors, test enquipment, etc., is possible to have
interference problems when the system is running. You can troubleshoot by the following means:
1. Try plugging in or unplugging the jumper J10 of C3 filter to verify whether the interference has been
eliminated.
2. Check whether the drive power lines and the signal/communication lines of sensitive equipment go down
the same trough. If they do, the signal or communication cables must be separed from the power wiring.
,
3. If the sensitive equipment and the inverter take the power from the same grid it is recommended to install
isolation transformer and filter in the power input of the sensitive equipment.
4. Proceed as following with the ground connection of the shielded cable of the sensitive equipment: try
grounding both ends, then single-grounded and then ungrounded; to verify whether the interference has been
eliminated.
5. Try to make that the interfered sensitive equipment and the inverter have no common ground, or floating
processing; to verify whether the interference has been eliminated.
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