- 12 -
System Configuration and Wiring
Wiring general view
●
Wiring must be performed by a qualified electrician.
●
To avoid electric shock, do not connect the power supply to the unit.
No-fuse breaker (NFB)
or earth leakage breaker
Used to protect the power line.
Interrupts the circuit in the case of excessive
current.
Note: Use a high frequency proof earth leakage
breaker for the inverter.
Regenerative resistor
Improves regenerative braking capability.
Only for the inverter incorporating the
regenerative braking circuit and resistor
Be sure to connect GND wire to the earth
to avoid electric shock.
Noise filter (NF)
Blocks noise from the power line.
Also reduces effect of noise from the inverter.
Magnetic contactor (MC)
Turn main power to inverter on/off.
Used with surge absorber mounted.
Note: Never attempt to start or stop the motor with
the electromagnetic contactor.
AC reactor (AC-L)
Reduces harmonic current of the power source.
Inverter
Motor
GND
