Hitachi Sj7002 Owners Manual

Step-by-Step Basic Installation
Inverter Mountingand Installation
2–20
Terminal
Dimensions and 
Torque SpecsThe following tables list the sc rew size of terminal and recommended torque for tightening for 
each of the SJ700
2 inverter models (400V models are on the next page).
CAUTION:  Fasten the screws with the specified fastening torque in the table below. Check for 
any loosening of screws. Otherwise, there is the danger of fire.
Note 1:The recommended ring lug connector listi ng consists of wire size...

SJ7002 Inverter
Inverter Mountingand Installation
2–21
Terminal dimensions and torque specs, continued...
Note 1: The recommended ring lug connector listing consists of wire size – screw size 
format. The wire sizes are in AWG or mm
2 format. For AWG wire sizes, bolt sizes 
for the ring lug centers are: #10, #12, 1/4”,   5/16”, and 1/2”. For metric wire sizes, 
bolt sizes for the ring lug centers are: 6 = 6M, 8 = 8M, 10 = 10M.
Note 2: Prepackaged (included) square washer is to  be used when the bare wire...

Step-by-Step Basic Installation
Inverter Mountingand Installation
2–22
St ep  6 : In this step, you will connect wiring to the 
input of the inverter. All models have the same 
power connector terminals [R(L1)], [S(L2)], and 
[T(L3)] for three-phase input. The three phases 
may be connected in any orde r, as they are isolated 
from chassis ground and do not determine motor 
direction of rotation.  Please refer to the specifica-
tions label (on the front or side of the inverter) 
for the acceptable input...

SJ7002 Inverter
Inverter Mountingand Installation
2–23
(Terminal diagrams, continued....)
R
(L1)
V
(T2)
U
(T1)
W
(T3)
S
(L2)
T
(L3)
PD
(+1)
RB
(RB)
P
(+)
N
(–)
(G)(G)
R0
R
(L1)
V
(T2)
U
(T1)
W
(T3)
S
(L2)
T
(L3)
PD
(+1)
P
(+)
N
(–)(G)(G)
Inverter models: –055 to –110LFUF2, –055 to –110HFUF2/HFEF2
Inverter models: –300 to –370LFU2, 
–300 to –550HFU2/HFE2 Inverter models: –150LFUF2 to 220L FU2, –150HFUF2 to –220HFU2/HFE2
Jumper bar
Jumper 
bar
T0EMC filter selection
Enable
Disable 
(default)
R
(L1)
V
(T2)...

Step-by-Step Basic Installation
Inverter Mountingand Installation
2–24
The table below lists the nominal current that may leak from only the inverter when the internal 
EMC filter is enabled or disabled. Leakage curre nt is in proportion to input power voltage and 
frequency.  The values do not exclude current  leakage from external devices and equipment 
(e.g., power cables). Inverter mode ls from 75 kW to 132 kW does not have a switch to enable/
disable the internal EMC filter. This complies  EMC...

SJ7002 Inverter
Inverter Mountingand Installation
2–25
NOTE:  An inverter powered by a portable or emerge ncy diesel power generator may result in a 
distorted power waveform, overheating the generato r. In general, the generator capacity should 
be at least five times that of the inverter (kVA).
CAUTION: Be sure that the input voltage ma tches the inverter specifications:


CAUTION:  Be sure not to power a three-phase-only  inverter with single phase power. Other-
wise, there is the possibility of...

Step-by-Step Basic Installation
Inverter Mountingand Installation
2–26
Step 7:  The process of motor selection is beyond the sc ope of this manual. However, it must be 
a three-phase AC induction motor.  It should also come with a chassis ground lug. If the motor 
does not have three power input leads, stop th e installation and verify the motor type. Other 
guidelines for wiring the motor include:
 Use an inverter-grade motor for ma ximum motor life (1600V insulation).
 For standard motors, use an...

SJ7002 Inverter
Inverter Mountingand Installation
2–27
Powerup Test
Step 9:  After wiring the inverter and motor, you’re  ready to do a powerup test. The procedure 
that follows is designed for the first-time use of  the drive. Please verify the following conditions 
before conducting the powerup test:
 You have followed all the steps in this chapter up to this step.
 The inverter is new, and is securely mo unted to a non-flammable vertical surface
 The inverter is connected to a power source and motor....

Powerup Test
Inverter Mountingand Installation
2–28
CAUTION:  If you operate a motor at a frequency higher  than the inverter standard default 
setting (50Hz/60Hz), be sure to check the motor  and machine specifications with the respective 
manufacturer. Only operate the motor at elevated frequencies after getting their approval. 
Otherwise, there is the danger of equipment damage and/or injury to personnel.
CAUTION:  Check the following before and during the  powerup test. Otherwise, there is the...

SJ7002 Inverter
Inverter Mountingand Installation
2–29
Using the Front Panel Keypad
Front Panel
IntroductionPlease take a moment to familiarize yourself wi th the keypad layout shown in the figure below.
The display is used in programming the inverter’s  parameters, as well as monitoring specific 
parameter values during operation. Many functions are applicable only during the initial instal-
lation, while others are more useful for maintenance or monitoring.
Parameter Editing 
and ControlsThe front...