Hitachi J300 Series Instruction Manual page 22

The terminal board will be exposed when the front cover or terminal cover (220HF to
I l00HD is removed. wire the inverter in this state.
Wiring the Power Supply and Motor
. The inverter will be damaged if the power supply is connected to the motor teminals
U(Tl), V(T2) and W(T3), so be sure not to make any mistakes.
. If multiple moton are to be connected, be sure to attach a tiermal relay to each motor.
NOTE 1: When changing the power supply of the motor between the invener and commer-
cial power, be sure to install mechanically interlocked switches Mgl and Mg2.
flsre
NOTE 2: Install an eanh leakage breaker at the input of the invener. (Select an eanh
leakage breaker whose sensitive current level is raised in high frequency range.)
when the cable length between the invefter and motor is long (more than 10 m),
the thermal relay may malfunction due to higher ha.rnonics. Thereibre, install an
AC reactor on the output side of the invener or use a current sensor in place of
the thermal relay.
1' 1'
t l
Power supp
T
ly
Braking Units
R ( L I ) ( T I ) U
s (L? Irvener (r2)v
T (L3) aT3) W
5-3