Table of Contents
Advertisement
Chapter 2
Chapter 2
2.4 Inverter Wiring
2.
Inverter Wiring
Applicable peripheral equipment
Applicable peripheral equipment
Applicable peripheral equipment
Applicable peripheral equipment
Power
supply
<1>
<2>
<3>
<4>
<5>
<6>
<7>
R S T
PD
<8>
INV
P
<9>
R0
RB
N
T0
<10>
U V W
<11>
<12>
<12>
<13>
<13>
<14>
M
Motor
Notes:
Notes:
• The description of peripheral equipment is for Hitachi 3
The description of peripheral equipment is for Hitachi 3
The description of peripheral equipment is for Hitachi 3-phase, 4
The description of peripheral equipment is for Hitachi 3
The description of peripheral equipment is for Hitachi 3
• Select breakers with proper interrupting capacity. (Use inverter
Select breakers with proper interrupting capacity. (Use inverter
Select breakers with proper interrupting capacity. (Use inverter
Select breakers with proper interrupting capacity. (Use inverter
Select breakers with proper interrupting capacity. (Use inverter
Select breakers with proper interrupting capacity. (Use inverter-ready breakers)
• Use
Use earth-leakage circuit breakers
leakage circuit breakers (ELB or MCB)
leakage circuit breakers
• Use copper electric wire (HIV cable) with allowable temperature rating 75°C or more.
Use copper electric wire (HIV cable) with allowable temperature rating 75°C or more.
Use copper electric wire (HIV cable) with allowable temperature rating 75°C or more.
Use copper electric wire (HIV cable) with allowable temperature rating 75°C or more.
Use copper electric wire (HIV cable) with allowable temperature rating 75°C or more.
Use copper electric wire (HIV cable) with allowable temperature rating 75°C or more.
Use copper electric wire (HIV cable) with allowable temperature rating 75°C or more.
• If the power line exceeds 20 m, use cable with ma
If the power line exceeds 20 m, use cable with ma
If the power line exceeds 20 m, use cable with major wire size for the power line.
If the power line exceeds 20 m, use cable with ma
If the power line exceeds 20 m, use cable with ma
• Tighten each termina
Tighten each termina
Tighten each terminal screw with the specified tightening torque.
Loose terminal screws may cause short circuits and fire.
Loose terminal screws may cause short circuits and fire.
Loose terminal screws may cause short circuits and fire.
Loose terminal screws may cause short circuits and fire.
Loose terminal screws may cause short circuits and fire.
Excessive tightening torque may cause damage to the terminal block or inverter body.
Excessive tightening torque may cause damage to the terminal block or inverter body.
Excessive tightening torque may cause damage to the terminal block or inverter body.
Excessive tightening torque may cause damage to the terminal block or inverter body.
Excessive tightening torque may cause damage to the terminal block or inverter body.
Excessive tightening torque may cause damage to the terminal block or inverter body.
Excessive tightening torque may cause damage to the terminal block or inverter body.
• When selecting a rated sensitivity current for earth
When selecting a rated sensitivity current for earth
When selecting a rated sensitivity current for earth-leakage circu
When selecting a rated sensitivity current for earth
When selecting a rated sensitivity current for earth
separated breaker considering a total cable length of between Inverter
separated breaker considering a total cable length of between Inverter
separated breaker considering a total cable length of between Inverter
separated breaker considering a total cable length of between Inverter-Power supply and
separated breaker considering a total cable length of between Inverter
separated breaker considering a total cable length of between Inverter
Inverter
Inverter–Motor distance. Do not use a high
Motor distance. Do not use a high-speed type of earth
Motor distance. Do not use a high
Use a delayed
Use a delayed-type circuit breaker, because the high
type circuit breaker, because the high-speed typ
type circuit breaker, because the high
type circuit breaker, because the high
• When using a CV cable for wiring through a metal conduit, the average current leakage
When using a CV cable for wiring through a metal conduit, the average current leakage
When using a CV cable for wiring through a metal conduit, the average current leakage
When using a CV cable for wiring through a metal conduit, the average current leakage
When using a CV cable for wiring through a metal conduit, the average current leakage
When using a CV cable for wiring through a metal conduit, the average current leakage
When using a CV cable for wiring through a metal conduit, the average current leakage
When using a CV cable for wiring through a metal conduit, the average current leakage
would be 30mA/km.
would be 30mA/km.
would be 30mA/km.
• When using a high relative dielectric constant cable such as IV cable, the leakage current is
When using a high relative dielectric constant cable such as IV cable, the leakage current is
When using a high relative dielectric constant cable such as IV cable, the leakage current is
When using a high relative dielectric constant cable such as IV cable, the leakage current is
When using a high relative dielectric constant cable such as IV cable, the leakage current is
When using a high relative dielectric constant cable such as IV cable, the leakage current is
When using a high relative dielectric constant cable such as IV cable, the leakage current is
When using a high relative dielectric constant cable such as IV cable, the leakage current is
about eight times as high as the standard cable. Therefore, when using an IV cable, use
about eight times as high as the standard cable. Therefore, when using an IV cable, use
about eight times as high as the standard cable. Therefore, when using an IV cable, use
about eight times as high as the standard cable. Therefore, when using an IV cable, use
about eight times as high as the standard cable. Therefore, when using an IV cable, use
about eight times as high as the standard cable. Therefore, when using an IV cable, use
about eight times as high as the standard cable. Therefore, when using an IV cable, use
about eight times as high as the standard cable. Therefore, when using an IV cable, use
ELCB with rated sensitivity current by eight times higher in the table bel
ELCB with rated sensitivity current by eight times
ELCB with rated sensitivity current by eight times
ELCB with rated sensitivity current by eight times
ELCB with rated sensitivity current by eight times
cable length exceeds 100 m, use a CV cable.
cable length exceeds 100 m, use a CV cable.
cable length exceeds 100 m, use a CV cable.
cable length exceeds 100 m, use a CV cable.
•Do not pull the power line cable after wiring. Doing so may cause screw loosening.
•Do not pull the power line cable after wiring. Doing so may cause screw loosening.
•Do not pull the power line cable after wiring. Doing so may cause screw loosening.
•Do not pull the power line cable after wiring. Doing so may cause screw loosening.
•Do not pull the power line cable after wiring. Doing so may cause screw loosening.
•Do not pull the power line cable after wiring. Doing so may cause screw loosening.
•Do not pull the power line cable after wiring. Doing so may cause screw loosening.
No.
Name
<1>
Electric wire
Electric wire
<2>
Earth-leakage circuit breaker EL
leakage circuit breaker EL
leakage circuit breaker ELCB or
MCCB
<3>
Magnetic contacto
Magnetic contactor MC
<4>
Input AC
AC reactor
(For harmonic control, power supply
(For harmonic control, power supply
(For harmonic control, power supply
coordination,
coordination,
coordination,
and
and
and
power
power
power
correction)
correction)
<5>
Noise filter for inverter
filter for inverter
<6>
Radio noise filter
Radio noise filter
(Zero-phase reactor)
phase reactor)
<7>
Radio noise filter on the input side
Radio noise filter on the input side
Radio noise filter on the input side
(Capacitor filter)
(Capacitor filter)
<8>
DC Choke
Choke
<9>
Braking resistor
Braking resistor
<10>
Regenerative braking unit
Regenerative braking unit
Regenerative braking unit
<11>
Noise filter on the output side
Noise filter on the output side
Noise filter on the output side
<12>
Radio noise filter
Radio noise filter
(Zero-phase reactor)
phase reactor)
<13>
Output AC reactor
Output
For reducing vibrations and
For reducing vibrations and
For reducing vibrations and
preventing thermal relay
preventing thermal relay
preventing thermal relay
malfunction
malfunction
<14>
LCR filter
LCR filter
(ELB or MCB) to ensure safety.
to ensure safety.
l screw with the specified tightening torque.
l screw with the specified tightening torque.
l screw with the specified tightening torque.
speed type of earth
speed type of earth-leakage circuit breaker.
See "Recommended cable gauges, wiring accessories, and crimp
See "Recommended cable
See "Recommended cable
terminals" on Page 2-9.
terminals" on Page 2
terminals" on Page 2
Use input reactor
Use
reactor for harmonic wave
voltage imbalance exceeds 3% or more, or
voltage imbalance exceeds 3% or more, or
voltage imbalance exceeds 3% or more, or when the power supply
voltage imbalance exceeds 3% or more, or
factor
factor
factor
capacity is
capacity is over 500 kVA or more, or when the power voltage may
500 kVA or more, or when the power voltage may
500 kVA or more, or when the power voltage may
500 kVA or more, or when the power voltage may
500 kVA or more, or when the power voltage may
change rapidly. This reactor also improves the power factor.
change rapidly. This reactor also improves the power factor.
change rapidly. This reactor also improves the power factor.
change rapidly. This reactor also improves the power factor.
change rapidly. This reactor also improves the power factor.
This noise filter reduces the conductive noise that is generated by
This noise filter reduces the conductive noise that is generated by
This noise filter reduces the conductive noise that is generated by
This noise filter reduces the conductive noise that is generated by
This noise filter reduces the conductive noise that is generated by
This noise filter reduces the conductive noise that is generated by
the inverter and transmitted in cables. Connect this noise filter to
the inverter and transmitted in cables. Connect this noise filter to
the inverter and transmitted in cables. Connect this noise filter to
the inverter and transmitted in cables. Connect this noise filter to
the inverter and transmitted in cables. Connect this noise filter to
the inverter and transmitted in cables. Connect this noise filter to
the primary side (input side) of the inverter.
the primary side (input side) of the inverter.
the primary side (input side) of the inverter.
the primary side (input side) of the inverter.
The inverter may generate radio noise through power supply wiring
The inverter may generate radio noise through power supply wiring
The inverter may generate radio noise through power supply wiring
The inverter may generate radio noise through power supply wiring
The inverter may generate radio noise through power supply wiring
The inverter may generate radio noise through power supply wiring
during operation.
during operation.
during operation.
Use this noise filter to reduce the radio noise (radiant noise).
Use this noise filter to reduce the radio noise (radiant noise).
Use this noise filter to reduce the radio noise (radiant noise).
Use this noise filter to reduce the radio noise (radiant noise).
Use this noise filter to reduce the radio noise (radiant noise).
Use this noise filter to reduce the radiant
Use this noise filter to reduce the radiant noise radiated from input
Use this noise filter to reduce the radiant
Use this noise filter to reduce the radiant
cables.
cables.
Use
Use DC chokes to
to reduce the harmonic generated by the inverter.
Use these devices to increase the braking torque of the inverter for
Use these devices to increase the braking torque of the inverter for
Use these devices to increase the braking torque of the inverter for
Use these devices to increase the braking torque of the inverter for
Use these devices to increase the braking torque of the inverter for
Use these devices to increase the braking torque of the inverter for
operation in which the inverter turns the connected
operation in which the inverter turns the connected
operation in which the inverter turns the connected
operation in which the inverter turns the connected
operation in which the inverter turns the connected load on and off
very frequently or decelerates the load running with a high moment
very frequently or decelerates the load running with a high moment
very frequently or decelerates the load running with a high moment
very frequently or decelerates the load running with a high moment
very frequently or decelerates the load running with a high moment
very frequently or decelerates the load running with a high moment
of inertia.
of inertia.
Connect this noise filter between the inverter and motor to reduce
Connect this noise filter between the inverter and motor to reduce
Connect this noise filter between the inverter and motor to reduce
Connect this noise filter between the inverter and motor to reduce
Connect this noise filter between the inverter and motor to reduce
Connect this noise filter between the inverter and motor to reduce
the radiant noise radiated from cables for the purpose of reducing
the radiant noise
the radiant noise
radiated from cables for the purpose of reducing
radiated from cables for the purpose of reducing
radiated from cables for the purpose of reducing
the electromagnetic interference with radio and television reception
the electromagnetic interference with radio and television reception
the electromagnetic interference with radio and television reception
the electromagnetic interference with radio and television reception
the electromagnetic interference with radio and television reception
the electromagnetic interference with radio and television reception
and preventing malfunctions of measuring equipment and sensors.
and preventing malfunctions of measuring equipment and sensors.
and preventing malfunctions of measuring equipment and sensors.
and preventing malfunctions of measuring equipment and sensors.
and preventing malfunctions of measuring equipment and sensors.
Use this noise filter to reduce the noise generated on the output
Use this noise filter to
Use this noise filter to
side of the inverter. (This noise filter can be used on both the input
side of the inverter. (This noise filter can be used on both the input
side of the inverter. (This noise filter can be used on both the input
side of the inverter. (This noise filter can be used on both the input
side of the inverter. (This noise filter can be used on both the input
side of the inverter. (This noise filter can be used on both the input
and output sides.)
and output sides.)
and output sides.)
Inverter drive
nverter driven motor may cause large vibrations compared
motor may cause large vibrations compared
motor may cause large vibrations compared to
motor may cause large vibrations compared
commercial power supply direct start
commercial power supply direct
commercial power supply direct
Connect Output AC reactor between inverter and motor to lessen
Connect
AC reactor between inverter and motor to lessen
AC reactor between inverter and motor to lessen
AC reactor between inverter and motor to lessen
AC reactor between inverter and motor to lessen
the pulsation of motor. Also, connect
the pulsation of motor. Also, connect output AC reactor, when the
the pulsation of motor. Also, connect
the pulsation of motor. Also, connect
cable length between inverter and mo
cable length between
cable length between
to prevent thermal relay malfunction due to the harmonic waves
to prevent thermal relay malfunction due to the harmonic waves
to prevent thermal relay malfunction due to the harmonic waves
to prevent thermal relay malfunction due to the harmonic waves
to prevent thermal relay malfunction due to the harmonic waves
to prevent thermal relay malfunction due to the harmonic waves
generated by switching operation o
generated by switching operation o
generated by switching operation of inverter. Note that the thermal
generated by switching operation o
relay can be replaced with a current sensor to avoid the
relay can be replaced with a current sensor to avoid the
relay can be replaced with a current sensor to avoid the
relay can be replaced with a current sensor to avoid the
relay can be replaced with a current sensor to avoid the
relay can be replaced with a current sensor to avoid the
malfunction.
malfunction.
Connect
Connect this noise filter between the inverter and motor to convert
this noise filter between the inverter and motor to convert
this noise filter between the inverter and motor to convert
this noise filter between the inverter and motor to convert
this noise filter between the inverter and motor to convert
the inverter output into a sinusoidal waveform and to reduce the
the inverter output into a sinusoidal waveform and to reduce the
the inverter output into a sinusoidal waveform and to reduce the
the inverter output into a sinusoidal waveform and to reduce the
the inverter output into a sinusoidal waveform and to reduce the
the inverter output into a sinusoidal waveform and to reduce the
motor vibration, motor noise and the radiant noise radiated from
motor vibration, motor noise and the radiant noise radiated from
motor vibration, motor noise and the radiant noise radiated from
motor vibration, motor noise and the radiant noise radiated from
motor vibration, motor noise and the radiant noise radiated from
motor vibration, motor noise and the radiant noise radiated from
cables. Surge voltage can be also controlled.
cables. Surge voltage can be also controlled.
cables. Surge voltage can be also controlled.
cables. Surge voltage can be also controlled.
2-6
Installation and Wiring
Installation and Wiring
Installation and Wiring
Installation and Wiring
phase, 4-pole squirrel
pole squirrel-cage motor.
ready breakers)
or wire size for the power line.
or wire size for the power line.
leakage circuit breaker, use a
it breaker, use a
it breaker, use a
Power supply and
Power supply and
leakage circuit breaker.
leakage circuit breaker.
speed type may malfunction.
e may malfunction.
in the table below. If the total
ow. If the total
ow. If the total
Total cable length
Total cable length
Sensitivity current (mA)
Sensitivity current (mA)
Sensitivity current (mA)
100 m or less
100 m or less
300 m or less
300 m or less
100
Function
Function
gauges, wiring accessories, and crimp
gauges, wiring accessories, and crimp
gauges, wiring accessories, and crimp
harmonic wave control, or when power supply
control, or when power supply
control, or when power supply
when the power supply
when the power supply
noise radiated from input
noise radiated from input
the harmonic generated by the inverter.
the harmonic generated by the inverter.
load on and off
reduce the noise generated on the output
reduce the noise generated on the output
reduce the noise generated on the output
start motor.
AC reactor, when the
AC reactor, when the
inverter and motor is longer
er (10 m or more),
(10 m or more),
inverter. Note that the thermal
inverter. Note that the thermal
50
to
Advertisement
Table of Contents
