4.2.2 Main Circuit Wiring
4.2.2.1 Power Input Terminal
◼ Install a molded case circuit breaker (MCCB) between three phase AC input power and main
circuit terminals R/L1, S/L2 and T/L3. A magnetic contactor (MC) in series connection is also
suggested so as to shut off the power by drive protection functions. Install a R-C varistor on
both ends of the MC.
◼ Ensure main circuit terminal screws are tightened to avoid vibration loosening the screws
which could cause electric sparks.
4.2.2.2 Power Output Terminal
◼ When connecting a noise filter at AC drive output terminals U/T1, V/T2 and W/T3, always use
an inductive L-filter. Do not install any power capacitor, L-C or R-C filter.
◼ Connect AC drive output terminals U/T1, V/T2 and W/T3 to motor input terminals U, V and W
respectively. Ensure the motor and drive terminals are in same phase sequence or the motor
will rotate reversely.