Delta ASDA-A3 Series User Manual page 880

ASDA-A3 Modbus Communication
 Anti-interference methods
In the signal transmission process, if there is interference, it may result in signal distortion.
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Therefore, it is important to eliminate interference. The elimination methods are as follows:
1. Add a terminal resistor.
2. Check if the servo drive is installed in a high magnetic field environment. If so, keep it
as far away as possible.
3. Use a shielded twisted-pair cable for the transmission line.
4. When wiring, isolate the high voltage power cable from the signal line.
5. Use a magnetic ring at the power input. For its usage, refer to Section 2.6.
6. Add X capacitor and Y capacitor, which are IEC 60384-14 certified, at the power input.
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