Troubleshooting
7-
21
(i.e.,
1,200 V for 400 V class). Be sure to use a motor with a withstand voltage between the motor phases that
is
greater than the maximum surge voltage. In particular, when using a 400 V class Inverter, use a special
motor
for Inverters.
n
Autotuning
has
not
been
performed
for
vector
control
Vector
control will not perform if autotuning has not been performed. Perform autotuning, or set the motor
constants
through calculations. Alternatively, change the Control Method Selection (A1-02) to V/f control (0
or
1).
K
K
K
K
If
There
Is
Noise
When
the
Inverter
Is
Started
or
From
an
AM
Radio
If
noise is generated by Inverter switching, implement the following countermeasures:
•
Change
the Inverter's Carrier Frequency Selection (C6-02) to lower the carrier frequency. This will help to
some
extent by reducing the amount of internal switching.
•
Install
an Input Noise Filter at the Inverter's power supply input area.
•
Install
an Output Noise Filter at the Inverter's power supply output area.
•
Use
metal tubing. Electric waves can be shielded by metal, so encase the Inverter with metal (steel).
•
Ground
the Inverter and motor.
•
Separate
main circuit wiring from control wiring.
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