Hitachi SH1-900H

2-9
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 standards
(SH1-03160-H (SH1-1320H) and below).
 The screw size may vary depending on terminal. Refer to Chapter
2.6 for the size of the terminal screw for the power line cable while
for other terminals, refer to the drawings of the wiring on Chapter
2.9.
 The tables on Chapter 2.6 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).
SH1-03410-H(SH1-1600H)~ SH1-06600-H(SH1-3150H) support only
normal duty(ND) and low duty(LD).
 The wire diameters shown in tables in Chapter 2.6 Wire Diameter,
Wiring Tools, and Crimping Terminals" indicate design values for
HIV wire (resistant to 75°C heat).
 When connecting wires to the main circuit terminal block, use a
round crimping terminal in accordance with the wires for use. Use a
crimp tool recommended by the manufacturer of the crimping
terminal to crimp the terminal.
 When replacing from SJ700 to SH1, if the wire diameter is different,
etc. Please contact your supplier or local Hitachi inverter sales
office.
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（HS900A series）.
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 400V class models to Type-C grounding.
ELB
Earth-leakage
circuit breaker
Magnetic
contactor
MC
Three-phase
AC power
supply
R/L1
S/L2
T/L3
R0
T0
T0
U/T1
V/T2
W/T3
Control circuit
power supply
Type-C grounding
(400 V class model)
J51 connector
Three-phase
AC motor
M
Main circuit
terminal section
3φ
P/+
PD/+1
RB
N/-
Jumper
Internal EMC filter *1)
Jumper or terminal
Disable
Enable
400V class:
380 to 460Vac
*1)SH1-03410-H(SH1-1600H)～SH1-06600-H(SH1-3150H)do not built-in EMC filter。