Hitachi P1-00041HFEF, Basic Manual

Page: 23 / 131

2-7
Chapter 2 Installation and Wiring
2.5 Wiring of the main circuit
Wire the main circuit of the inverter.
The following illustration shows the power supply and
wiring connections to a motor only.
Open a terminal block cover to wire the terminal block in
the main circuit.
Explanation of main circuit terminal block
See “Chapter 1 Safety Instructions” for response to CE and UL
standards.
The screw size may vary depending on terminal. Refer to Page
2-8/2-9 for the size of the terminal screw for the power line cable
while for other terminals, refer to the drawings of the wiring on
Page 2-13 or later.
The tables on Page 2-8/2-9 list the specifications of cables, crimp
terminals, and terminal screw tightening torques for reference.
Recommended wire gauges vary depending on the rated load
settings (ND/LD/VLD).
Symbol Terminal name Description
R,S,T
(L1,L2,L3)
Main power input
Connect to the AC power supply. Leave these terminals unconnected
when using a regenerative converter.
U,V,W
(T1,T2,T3)
Inverter output Connect a Three-phase motor.
PD,P
(+1,+) DC choke
connection terminal Remove the PD-P jumper from terminals, and connect the optional DC
choke for power factor improvement.
P,RB
(+,RB)
External chopper
braking resistor
connection terminal
Connect the optional external braking resistor. See “Chapter 7
Specifications” for built-in braking circuit inverter models.
P,N
(+,-)
Regenerative braking
unit connection
terminal
Connect the optional regenerative braking unit.
Inverter ground
terminal
This serves as a ground terminal for the inverter chassis to ground.
Connect 200V class and 400V class models to Type-D grounding and
Type-C grounding, respectively.
ELB
Earth-leakage
circuit breaker Magnetic
contactor
MC
Three-phase
AC power
supply
P+
R/L1
S/L2
T/L3
R0
T0
U/T1
V/T2
W/T3
Control circuit
power supply
Type-D grounding
(200 V class model)
Type-C grounding
(400 V class model)
J51 connector
Three-phase
AC motor
M
Main circuit
terminal section
3
φ
P/+ PD/+1
RB N/-
Jumper
Internal EMC filter
Jumper or terminal
Disable
Enable
200V class:
200 to 240Vac
400V class:
380 to 500Vac