Hitachi SJ Series, User Manual

Page: 228 / 786

Chapter 12
12.9.8
•
•
•
•
•
*)
Chapter 12
12.9.8 Stabilize motor revol
• To improve the unstable state of the motor caused
by the vibration that occurs at a certain frequency
or higher.
• This is a function to adjust the motor that is hunting
to achieve a stable state. Search a set range for a
point where the hunt
adjustment accordingly.
• When a single inverter drives multiple motors,
setting the stability constant at 0 may improve the
state.
• When a load with large inertia such as a fan is
rotated, decrementing the stability constant
[HA110] by 10% each time may improve the state.
• When the motor capacity is smaller than the rated
capacity of the inverter, incrementing the set value
by 10% each time may improve the state. In
contrast, when the motor capacity is larger than the
rated capacit
value by 10% each time may improve the state.
Parameter
*) Some settings may limit
details, see "12.12 Adjust motor sound, noise, and
heat production of inverter."
Item
Stability constant
Output voltage
gain
Carrier frequency
Ｑ
Ａ
Chapter 12
Stabilize motor revol
To improve the unstable state of the motor caused
by the vibration that occurs at a certain frequency
This is a function to adjust the motor that is hunting
to achieve a stable state. Search a set range for a
point where the hunting stops, and make an
adjustment accordingly.
When a single inverter drives multiple motors,
setting the stability constant at 0 may improve the
When a load with large inertia such as a fan is
rotated, decrementing the stability constant
] by 10% each time may improve the state.
When the motor capacity is smaller than the rated
capacity of the inverter, incrementing the set value
by 10% each time may improve the state. In
contrast, when the motor capacity is larger than the
rated capacity of the inverter, decrementing the set
value by 10% each time may improve the state.
Parameter
Some settings may limit
details, see "12.12 Adjust motor sound, noise, and
heat production of inverter."
Parameter
Stability constant [HA110]
Output voltage
[Hb180]
Carrier frequency [bb101]
Stabilize motor revolution
To improve the unstable state of the motor caused
by the vibration that occurs at a certain frequency
This is a function to adjust the motor that is hunting
to achieve a stable state. Search a set range for a
ing stops, and make an
adjustment accordingly.
When a single inverter drives multiple motors,
setting the stability constant at 0 may improve the
When a load with large inertia such as a fan is
rotated, decrementing the stability constant
] by 10% each time may improve the state.
When the motor capacity is smaller than the rated
capacity of the inverter, incrementing the set value
by 10% each time may improve the state. In
contrast, when the motor capacity is larger than the
y of the inverter, decrementing the set
value by 10% each time may improve the state.
Some settings may limit the carrier frequency. For
details, see "12.12 Adjust motor sound, noise, and
heat production of inverter."
Parameter
[HA110]
[Hb180]
[bb101]
ution
To improve the unstable state of the motor caused
by the vibration that occurs at a certain frequency
This is a function to adjust the motor that is hunting
to achieve a stable state. Search a set range for a
ing stops, and make an
When a single inverter drives multiple motors,
setting the stability constant at 0 may improve the
When a load with large inertia such as a fan is
rotated, decrementing the stability constant
] by 10% each time may improve the state.
When the motor capacity is smaller than the rated
capacity of the inverter, incrementing the set value
by 10% each time may improve the state. In
contrast, when the motor capacity is larger than the
y of the inverter, decrementing the set
value by 10% each time may improve the state.
the carrier frequency. For
details, see "12.12 Adjust motor sound, noise, and
0~
0~
0.5~16.0(kHz) *)
12-9-11
To improve the unstable state of the motor caused
by the vibration that occurs at a certain frequency
This is a function to adjust the motor that is hunting
to achieve a stable state. Search a set range for a
setting the stability constant at 0 may improve the
] by 10% each time may improve the state.
When the motor capacity is smaller than the rated
capacity of the inverter, incrementing the set value
contrast, when the motor capacity is larger than the
y of the inverter, decrementing the set
value by 10% each time may improve the state.
the carrier frequency. For
details, see "12.12 Adjust motor sound, noise, and
• If the motor is hunting and vibrating, check if
appropriate settings are provided for the motor
capacity, the number of motor poles, the b
frequency, the rated voltage, and the rated current.
• Then conduct the auto
hunting ends, and adjust the stability constant.
• Exemplar methods of reducing the hunting include
the following methods:
If no effect can be observed, restore the original
values.
Data
~1000(%)
~255(%)
16.0(kHz) *)
！
11
If the motor is hunting and vibrating, check if
appropriate settings are provided for the motor
capacity, the number of motor poles, the b
frequency, the rated voltage, and the rated current.
Then conduct the auto
hunting ends, and adjust the stability constant.
Exemplar methods of reducing the hunting include
the following methods:
1. Adjust the carrier frequen
gradually decrementing it down to 2 kHz.
2. Adjust the output voltage gain [Hb180] by
gradually decrementing it down to 80%.
If no effect can be observed, restore the original
values.
• Do not conduct a steady operation with a
setting for
that exceeds 100%.
The motor may be burned.
To adjust the control for reducing the
hunting of motors.
Decrease it if the motor is hunting. A
lower setting decreases the output
voltage.
Change the carrier frequency of the
PWM output. If the motor is hunting,
lower the setting.
！
Cautio
n
If the motor is hunting and vibrating, check if
appropriate settings are provided for the motor
capacity, the number of motor poles, the b
frequency, the rated voltage, and the rated current.
Then conduct the auto-tuning to check if the
hunting ends, and adjust the stability constant.
Exemplar methods of reducing the hunting include
the following methods:
Adjust the carrier frequen
gradually decrementing it down to 2 kHz.
Adjust the output voltage gain [Hb180] by
gradually decrementing it down to 80%.
If no effect can be observed, restore the original
Do not conduct a steady operation with a
setting for the output voltage gain [Hb180]
that exceeds 100%.
The motor may be burned.
Description
To adjust the control for reducing the
hunting of motors.
Decrease it if the motor is hunting. A
lower setting decreases the output
voltage.
Change the carrier frequency of the
PWM output. If the motor is hunting,
lower the setting.
Inverter Function
If the motor is hunting and vibrating, check if
appropriate settings are provided for the motor
capacity, the number of motor poles, the b
frequency, the rated voltage, and the rated current.
tuning to check if the
hunting ends, and adjust the stability constant.
Exemplar methods of reducing the hunting include
Adjust the carrier frequency [bb101] by
gradually decrementing it down to 2 kHz.
Adjust the output voltage gain [Hb180] by
gradually decrementing it down to 80%.
If no effect can be observed, restore the original
Do not conduct a steady operation with a
the output voltage gain [Hb180]
that exceeds 100%.
The motor may be burned.
Description
To adjust the control for reducing the
hunting of motors.
Decrease it if the motor is hunting. A
lower setting decreases the output
Change the carrier frequency of the
PWM output. If the motor is hunting,
lower the setting.
Inverter Function
If the motor is hunting and vibrating, check if
appropriate settings are provided for the motor
capacity, the number of motor poles, the base
frequency, the rated voltage, and the rated current.
tuning to check if the
hunting ends, and adjust the stability constant.
Exemplar methods of reducing the hunting include
cy [bb101] by
gradually decrementing it down to 2 kHz.
Adjust the output voltage gain [Hb180] by
gradually decrementing it down to 80%.
If no effect can be observed, restore the original
Do not conduct a steady operation with a
the output voltage gain [Hb180]
To adjust the control for reducing the
Decrease it if the motor is hunting. A
lower setting decreases the output
Change the carrier frequency of the
PWM output. If the motor is hunting,
Inverter Function
frequency, the rated voltage, and the rated current.
Exemplar methods of reducing the hunting include
If no effect can be observed, restore the original
Do not conduct a steady operation with a
the output voltage gain [Hb180]