Chapter 5
Event
▶
Motor speed does
not increase
Output frequency
is unstable
No torque
In operation the
circuit breaker gets
activated
Noise interferes
with the TVs and
radios nearby the
inverter
Chapter 5
▶
speed does
・
Frequency source is low
・
Overload restriction
in use
・
Frequency is being limited
・
Acceleration time is long
Output frequency
・
Several parameters are not
adequately
・
Big variation in the load
・
Supply voltage fluctuates
・
V/f
・
It is being used f
application
・
Very heavy
In operation the
circuit breaker gets
・
Large leakage current
interferes
with the TVs and
radios nearby the
・
Irradiated noise from the
inverter
Estimated cause
Frequency source is low
Overload restriction
in use
Frequency is being limited
Acceleration time is long
Several parameters are not
adequately set
Big variation in the load
Supply voltage fluctuates
V/f control is in use
It is being used f
application
Very heavy load
Large leakage current
Irradiated noise from the
inverter
Estimated cause
▶
Frequency source is low
Overload restriction function
Frequency is being limited
Acceleration time is long
Several parameters are not
Big variation in the load
Supply voltage fluctuates
control is in use
It is being used for lift down
load
Large leakage current
Irradiated noise from the
5-6
・
If output current is high, the overload restriction function
[bA122] lowers the frequency.
time [AC120], it is necessary to suppress the current
function is
・
Increase the frequency source or cancel any other high
priority frequency command such as jogging
・
The upper limit
be increased. The frequency limiting d
the maximum frequency, but the upper limit function.
・
Acceleration time
really slowly. Shorten gradually the acceleration time.
・
Check for the motor basic parameters.
・
Review the power capacity of both the inverter and motor.
・
To keep to a
optional AC reactor, DC choke or and input filter,
improvement is possible.
・
Can switch in
control, … etc.
・
If the torque in the regenerative operation is not enough,
you can use a braking resistor or regenerative braking unit
lift down
・
Review the capacity of both the inverter and motor.
・
Lower the carrier frequency
・
Increase the current sensitivity of the circuit breaker, or
replace the sensitivity current sensor/part.
・
If possible, separate the wiring from the TV and radio
・
Put a zero
in the output
If output current is high, the overload restriction function
[bA122] lowers the frequency.
time [AC120], it is necessary to suppress the current
Increase the frequency source or cancel any other high
priority frequency command such as jogging
The upper limit [bA102]
be increased. The frequency limiting d
the maximum frequency, but the upper limit function.
Acceleration time [AC120]
really slowly. Shorten gradually the acceleration time.
Check for the motor basic parameters.
Review the power capacity of both the inverter and motor.
To keep to a minimum
optional AC reactor, DC choke or and input filter,
improvement is possible.
Can switch in [AA121]
control, … etc.
If the torque in the regenerative operation is not enough,
you can use a braking resistor or regenerative braking unit
Review the capacity of both the inverter and motor.
Lower the carrier frequency
Increase the current sensitivity of the circuit breaker, or
replace the sensitivity current sensor/part.
If possible, separate the wiring from the TV and radio
Put a zero-phase reactor either in the main supply input or
in the output
Corrective action
If output current is high, the overload restriction function
[bA122] lowers the frequency.
To increase the acceleration
time [AC120], it is necessary to suppress the current
Increase the frequency source or cancel any other high
priority frequency command such as jogging
[bA102] setting may be low, and it should
be increased. The frequency limiting d
the maximum frequency, but the upper limit function.
[AC120] setting is long, so will accelerate
really slowly. Shorten gradually the acceleration time.
Check for the motor basic parameters.
Review the power capacity of both the inverter and motor.
minimum the supply fluctuations, by using an
optional AC reactor, DC choke or and input filter,
improvement is possible.
[AA121] to torque boost, sensorless vector
If the torque in the regenerative operation is not enough,
you can use a braking resistor or regenerative braking unit
Review the capacity of both the inverter and motor.
Lower the carrier frequency [bb101]
Increase the current sensitivity of the circuit breaker, or
replace the sensitivity current sensor/part.
If possible, separate the wiring from the TV and radio
phase reactor either in the main supply input or
Troubleshooting
Corrective action
If output current is high, the overload restriction function
o increase the acceleration
time [AC120], it is necessary to suppress the current
Increase the frequency source or cancel any other high
priority frequency command such as jogging or multi
setting may be low, and it should
be increased. The frequency limiting does not make use of
the maximum frequency, but the upper limit function.
setting is long, so will accelerate
really slowly. Shorten gradually the acceleration time.
Check for the motor basic parameters.
Review the power capacity of both the inverter and motor.
the supply fluctuations, by using an
optional AC reactor, DC choke or and input filter,
to torque boost, sensorless vector
If the torque in the regenerative operation is not enough,
you can use a braking resistor or regenerative braking unit
Review the capacity of both the inverter and motor.
[bb101]
Increase the current sensitivity of the circuit breaker, or
replace the sensitivity current sensor/part.
If possible, separate the wiring from the TV and radio
phase reactor either in the main supply input or
Troubleshooting
If output current is high, the overload restriction function
o increase the acceleration
time [AC120], it is necessary to suppress the current increase.
Increase the frequency source or cancel any other high
or multi-speed.
setting may be low, and it should
oes not make use of
the maximum frequency, but the upper limit function.
setting is long, so will accelerate
really slowly. Shorten gradually the acceleration time.
Review the power capacity of both the inverter and motor.
the supply fluctuations, by using an
optional AC reactor, DC choke or and input filter,
to torque boost, sensorless vector
If the torque in the regenerative operation is not enough,
you can use a braking resistor or regenerative braking unit.
Review the capacity of both the inverter and motor.
Increase the current sensitivity of the circuit breaker, or
If possible, separate the wiring from the TV and radio
phase reactor either in the main supply input or
Troubleshooting
.
oes not make use of
setting is long, so will accelerate
the supply fluctuations, by using an
.
phase reactor either in the main supply input or
Summary of Contents for P1-00041HFEF
Page 6: ...0 5 Contents Contents Memo ...
Page 42: ...2 26 Chapter 2 Installation and Wiring Memo ...
Page 129: ...Index Index 3 memo ...
Page 130: ...Index Index 4 memo ...
