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8.6.8 Overcurrent
8.7 Inverter system interference troubleshooting
If sensitive devices(PLC,PC,sensors,test enquipment,etc.) exist interference problems when
the system is running, you can troubleshoot by the following means:
1. Try plugging in or unplugging the jumper pins 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 there is, it should be again separated from the
wiring.
3. If the sensitive equipment and drive to take power from the same grid, it is recommended
to install isolation transformer and filter to the distribution of sensitive equipment side.
4. The relative shield wire of sensitive equipment try to ground at both ends 、
single-grounded、ungrounded respectively; to verify whether the interference has been
eliminated.
5. Try to make the interfered sensitive equipment and the drive have no common ground, or
floating processing; to verify whether the interference has been eliminated.
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