5−2
Introduction
Introduction
A motor control system will obviously include a motor and inverter, as well as fuses for
safety. If you are connecting a motor to the inverter on a test bench just to get started,
that’s all you may need for now. But a fully developed system can also have a variety of
additional components. Some can be for noise suppression, while others may enhance
the inverter’s braking performance. The figure below shows a system with several
possible optional components, and the table gives part number information.
Breaker,
MCCB or
GFI
From power supply
Name
Part No. Series
See
page
EU, Japan USA
AC reactor, input side ALI-xxx2 HRL-x 5-3
RF noise filter, input side ZCL-xxx ZCL-xxx 5-4
EMI filter (for CE) (to be fixed) 5-4
Capacitive filter CFI-x CFI-x 5-4
DC link choke DCL-x-xx HDC-xxx 5-5
Braking resistor JRB-xxx-x
SRB-xxx-x
JRB-xxx-x
SRB-xxx-x
5-5
Braking resistor
NEMA-rated
HRB-x,
NSRBx00-x
NJRB-xxx
5-5
Braking unit BRD-xxx BRD-xxx 5-5
RF noise filter, output side ZCL-xxx ZCL-xxx 5-4
AC reactor, output side ACL-x2-xxx HRL-xxx 5-3
LCR filter Combination:
ACL-x2-xxx
LPF-xxx
R-2-xxx
HRL-xxC 5-3
NOTE: The Hitachi part number series for accessories
includes different sizes of each part type, specified by the
–x suffix. Hitachi product literature can help match size
and rating of your inverter to the proper accessory size.
Each inverter accessory comes with its own printed
instruction manual. Please refer to those manuals for
complete installation details. This chapter gives only an
overview of these optional system devices.
Capacitive
filter
Motor
Thermal
switch
L1 L2 L3
T1 T2 T3
Inverter
+1
+
GND
(Input choke)
RF noise filter
DC link
choke
-
EMI filter
Braking
Unit
RF noise filter
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