Electrical Design
‑47‑
● The output side cannot be connected to a capacitor or surge protection device.
Otherwise, the device will frequently activate the protection mechanism or even
be damaged.
● If the motor cable is too long, electrical resonance may be generated due to the
impact of the distributed capacitor. The electrical resonance will lead to damage
to motor insulation or high leakage current, and trigger the overcurrent protection
of drive. When the motor cable is longer than 150 m, install an AC output reactor
close to the drive.
● The control circuit is a safety extra‑low voltage (SELV) circuit, which must be
insulated and isolated from other circuits. Make sure that the control circuit is
connected to the SELV circuit.
● Note that no foreign matter enters the wiring part of the terminal block.
● Do not carry out welding treatment when using stranded wires.
● The tightening torque of each terminal may be different. Tighten the screws
according to the specified tightening torque using a torque screwdriver, ratchet, or
wrench. If an electric tool is used to tighten the terminal screws, use a low speed
setting to avoid damage to the terminal screws. Do not tighten the terminal
screws at an angle of more than 5 degrees. Otherwise the terminal screws may be
damaged.
Main Circuit Wiring Requirements
The power input cable of the AC drive and motor cable will generate strong
electromagnetic interference. To avoid electromagnetic interference caused by long‑
distance parallel coupling between strong interference cable and control circuit, the
distance between the main circuit cables and signal cables must be greater than 30
cm. 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 in good connection and well grounded. Aluminum ducts can be
used to ensure the electric potential of the equipment. The filter, motor, and drive
must be connected to the system (machinery or appliance) properly, with coating
protection at installation part and conductive metal in full contact.
Figure 3‑1 Cabling
To Next Page
Loading...
