Design
Chapter 3
D Wiring between Inverter and Motor
Be sure to use a shield braided cable to connect the Inverter and motor.
Reduce the length of the cable as much as possible and ground the shield on the Inverter side and motor
side. The cable length must not exceed 20 m. Furthermore, attach a clamp core close to the Inverter’s
output terminals and the shield of the Inverter side.
Recommended Clamp Core
Product name
Clamp filter
Model
ZCAT3035-1330
Manufacturer
TDK
D Wiring Control Circuit Cable
Be sure to use a shield braided cable for the control circuit and ground the shield on the inverter side at
one point. Further more, attach a clamp core close to the Inverter.
Braking Unit (Optional)
Circuit
breaker
Clamp core
Three-phase,
200 VAC
Noise Filter
Single-phase,
200 VAC
Three-phase,
400-VAC
Note For the 400-VAC-class Inverter, be sure to ground the supply neutral.
D Grounding the Braided Shield
It is recommended that a cable clamp be attached to the braided shield for grounding, which allows the
secure grounding of the braided shield.
Cable clamp
Ground plate
Cable
Shield
3-13
OMRON [ OMRON ELECTRONICS LLC ]
