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3.2.3 Instructions for the use of external electrical components
Name
Setting station
Function
Air switch
Input the front
of the loop
When the downstream device is over current, disconnect
the power supply
Contactor
Empty and
between the
input side of
the drive
The inverter should be operated up and down, and the
frequency converter should be avoided by the contactor
(Less than twice per minute) or direct start operation.
AC input
Reactor
Inverter input
side
Improve the input side of the power factor; effectively
eliminate the input side of the high harmonics, to prevent
the voltage waveform
Distortion caused by other equipment damage; to
eliminate the power supply phase imbalance caused by the
input current imbalance.
EMC AC
output
filter
Inverter input
side
Reduce the conduction and radiation interference of the
inverter to the outside; reduce the conduction from the
power supply side to the inverter
Interference, improve the anti-interference ability of the
inverter.
DC
Reactor
315G The
above DC
reactor is
standard
Improve the input side of the power factor; improve the
efficiency of the whole machine and thermal stability.
Effectively eliminate the loss
The impact of the high-order harmonic on the inverter,
reducing external conduction and radiation interference.
AC output
filter
Between the
inverter output
side and the
motor. Close to
the inverter
installation.
Inverter output side generally contains more high-order
harmonics. When the distance between the motor and the
inverter, because the line
There is a large distributed capacitance in the road. Where
a harmonic may produce resonance in the loop, bringing
two
Aspect:
◆
Damage to the motor insulation performance, long time
will damage the motor.
◆
produce a large leakage current, causing frequent
protection of the inverter. General frequency converter and
motor distance over 100m, it is recommended to install the
output AC reactor.
3.3 Terminal block diagram
3.3.1 Description of Major Loop Terminal Block
a)
The Major Loop Terminal Block Distribution Diagram of 0.4KW-5.5KW
（
as shown in
