Electrical Design Guide
‑22‑
Figure 3‑2 Connection of the EMC filter
Installing a magnetic ring and a magnetic buckle
The drive generates very strong interference during operation. The drive may interfere
with or be interfered with by other devices due to improper routing or grounding.
Wind the drive output U/V/W cable onto a magnetic ring for two to four turns. Wind
the signal cable onto a magnetic buckle or magnetic ring for one to two turns.
● An amorphous magnetic ring has a high magnetic conductivity when the
frequency is within 1 MHz and can efficiently suppress interference of the servo
drive, but is expensive.
● A magnetic buckle has a high magnetic conductivity when the frequency is above
1 MHz and can efficiently suppress interference of various signal cables and low‑
power servo drives at a low cost.
The following figure shows the connection of the magnetic ring and magnetic buckle.
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