Hitachi WJ C1 Series User Manual

Appendix
A-2-1
A.2 Glossary
B
Name
Description
Basic Guide
Basic instruction manual
showing only the information
necessary for handling the
inverter.
C
Name
Description
CE marking
A mark that is attached when
meeting the EU standards.
Required for sales in Europe.
Charge lamp
Indicates the charging status
of the inverter to the main
circuit DC voltage circuit. Even
if the input power is shut off,
the voltage remains as long as
it is lit.
Control power
supply
Power supply required to set
parameters by the keypad,
control PWM output gate
circuit, etc.
D
Name
Description
Dynamic braking
resistor
Resistor for power
consumption connected to
regenerative braking unit or
built-in braking resistor
operation circuit. Selection is
required depending on the
power consumption and
operating time.
E
Name
Description
EMC
Electromagnetic compatibility
A property that prevents other
devices from malfunctioning
due to noise, and a property
that prevents malfunction due
to noise.
F
Name
Description
Frequency
setting device
A setting device with a built-in
variable resistor.
Connect to the analog input
terminals.
H
Name
Description
Harmonic (noise)
Sine wave (distorted wave)
current with a frequency that is
an integral multiple of the
commercial power supply (sine
wave) generated by the input
circuit of the inverter.
Harmonic
suppression unit
The input current waveform is
made sinusoidal to reduce and
suppress the harmonics
generated by the inverter. In
addition, regenerative power
can be returned to the power
supply.
High frequency
noise
Noise generated by voltage
switching performed during
power conversion of inverters,
etc. There are conducted
noise conducted through
electric wires, radiation noise
transmitted through the air,
and induction noise induced in
adjacent electric wires.
I
Name
Description
I/O
Input/Output
IGBT
Insulated gate bipolar
transistor
One of the switching elements
of an inverter.
IM
Induction motor.
Intelligent input
terminal
A multifunction contact input
terminal. The function can be
changed in the setting.
Intelligent output
terminal
A multifunction contact output
terminal. The function can be
changed in the setting.
Inverter model
The model written on the
specification label of the
inverter.
K
Name
Description
Keypad
The operation part installed on
the surface for operating the
inverter.
L
Name
Description
LAD
Lead to acceleration and
deceleration
Accelerate and decelerate the
motor.
LD rating
Low duty: One of the load
ratings that indicates the rated
current and overload current
rating. It can drive motors with
a higher rated current than the
ND rating, but the overload
current rating and temperature
rating are relatively low. Can
be used with light loads.

Hitachi WJ C1 Series Specifications

General

Brand	Hitachi
Model	WJ C1 Series
Category	Inverter
Language	English