Electrical Design
‑64‑
Figure 3‑9 Recommended power cable types
Cable routing of the main circuit
The power input cable of the AC drive and the motor cable can generate strong
electromagnetic interference. To avoid electromagnetic interference caused by long‑
distance parallel coupling between the high‑interference cables and the control
circuit, keep the main circuit cables more than 30 cm away from signal cables.
Common main circuit cables include input R/S/T cables, output U/V/W cables, DC bus,
and brake cables. Signal cables include I/O signal cables, communication cables, and
encoder cables.
Cable ducts must be securely connected and well grounded. Use aluminum cable
ducts to ensure the equipotentiality of the AC drive. Connect the filter, AC drive, and
motor to the system (machinery or appliance) properly. Protect all connections with
spray coating and ensure good contact of conductive metal.
Figure 3‑10 Cable routing
Wiring in an IT or angular grid system
Before wiring in an IT or angular grid system, disconnect the optional EMC grounding
screw. Failure to comply may result in damage to the AC drive or injury.
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