Inovance MD500-PLUS Series - Communication Interference; RS485 and CAN Communication Interference; Ethercat and PROFINET Communication Interference

Troubleshooting for Common EMC Interference Problems
‑170‑
Step
Action
7
Add a ferrite clamp to the signal cable, or wind the signal cable
on a magnetic ring for one to two turns.
8
Use a shielded power cable and ensure that the shield is well‑
grounded.
9.5 Communication Interference
9.5.1 RS485 and CAN Communication Interference
Follow the following table for troubleshooting.
Step
Action
1
Add a 120 Ω termination resistor at each end of the bus.
2
Use a multi‑core shielded twisted pair cable instead, and ground
the shield at both ends.
3
Separate the communication cable from the power cable by a
distance of at least 30 cm.
4
For multi‑node communication, adopt the daisy chain topology
for routing.
5
For multi‑node communication, add an equipotential bonding
grounding wire between nodes.
6
Add a ferrite clamp at each end of the communication cable, or
wind the communication cable on a magnetic ring for one to two
turns.
7
Wind the output U/V/W cables of the AC drive on a magnetic ring
for two to four turns.
8
Use a shielded power cable and ensure that the shield is well‑
grounded.
9.5.2 EtherCAT and PROFINET Communication Interference
Follow the following table for troubleshooting.
Step
Action
1
Check that the communication network cables meet the
specification requirements for Cat 5e shielded cables.
2
Check that the communication port is not loose or in poor
contact.
3
Separate the communication cable from the power cable by a
distance of at least 30 cm.
4
For multi‑node communication, add an equipotential bonding
grounding wire between nodes.