Items
Cause
Remedy
The motor
vibrates
severely and
does not rotate
normally.
The voltage between phases is
badly balanced.
Check the input voltage and
balance the voltage.
Check and test the motor’s
insulation.
The motor
makes
humming, or
loud noises.
Resonance occurs between the
motor's natural frequency and the
carrier frequency.
Slightly increase or decrease the
operating frequency.
Resonance occurs between the
motor's natural frequency and the
inverter’s output frequency.
Slightly increase or decrease the
carrier frequency.
Use the frequency jump function to
avoid the frequency band where
resonance occurs.
The motor
vibrates/hunts.
The frequency input command is an
external, analog command.
In situations of noise inflow on the
analog input side that results in
command interference, change the
input filter time constant (In.07).
The wiring length between the
inverter and the motor is too long.
Ensure that the total cable length
between the inverter and the motor
is less than 200 m (50 m for
motors rated 3.7 kW or lower).
The motor
does not come
to a complete
stop when the
inverter output
stops.
It is difficult to decelerate sufficiently,
because DC braking is not operating
normally.
Adjust the DC braking parameter.
Increase the set value for the DC
braking current.
Increase the set value for the DC
braking stopping time.
The output
frequency does
not increase to
the frequency
reference.
The frequency reference is within
the jump frequency range.
Set the frequency reference higher
than the jump frequency range.
The frequency reference is
exceeding the upper limit of the
frequency command.
Set the upper limit of the frequency
command higher than the
frequency reference.
Because the load is too heavy, the
stall prevention function is working.
Replace the inverter with a model
that has increased capacity.
The cooling fan
does not
rotate.
The control parameter for the
cooling fan is set incorrectly.
Check the control parameter
setting for the cooling fan.
The motor
stops in case
of lightning.
The product may be reset or a trip
(OCT, OC2, OVT) may occur due to
lightning.
Restart after checking the
peripheral devices of the inverter.
Summary of Contents for G100
Page 14: ......
Page 16: ...5 5 7 5 kW 3 Phase ...
Page 32: ...0 4 0 8 kW 1 5 2 2 kW 4 0 kW ...
Page 48: ......
Page 68: ......
Page 81: ......
Page 100: ......
Page 116: ...trips automatic Reset Restart is not attempted and the Fire Mode Count is not increased ...
Page 118: ......
Page 130: ... Terminal connections for 3 wire operation 3 wire operation ...
Page 140: ... PID control block diagram ...
Page 165: ...Code and Features Description Code Description continuous rating ...
Page 170: ......
Page 186: ... Displayed as on the Keypad ...
Page 200: ...provided signal output at 150 36 sec ...
Page 216: ...Code and Features Description delay time delay time ...
Page 219: ......
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Page 335: ...Manual Revision History Revision History No Date Edition Changes 1 2019 01 First Release ...