Hitachi SJ Series, User Manual

Page: 232 / 786

Chapter 12
•
•
•
Socks occur during the revolutions at
the start.
Over current occurs at the start
The motor cannot provide enough
torque for the load is too high for the
motor to at the start.
Acceleration is not possible.
Chapter 12
• In addition to the adjustment of the sensorless
vector control, refer to the following description.
• Set the carrier fre
kHz or higher. A set frequency of 1.9 kHz or lower
may cause hunting.
• When the revolution of the motor is hindered by
breaking or the motor lock caused by foreign
objects may cause over current or the like. When
no such adjustment as ones mentioned above
improves the state, checking the portion around the
motor may sometimes improves it.
！
Phenomenon
Socks occur during the revolutions at
the start.
Over current occurs at the start
The motor cannot provide enough
torque for the load is too high for the
motor to at the start.
Acceleration is not possible.
Chapter 12
In addition to the adjustment of the sensorless
vector control, refer to the following description.
Set the carrier frequency [bb101] at a value of 2.0
kHz or higher. A set frequency of 1.9 kHz or lower
may cause hunting.
When the revolution of the motor is hindered by
breaking or the motor lock caused by foreign
objects may cause over current or the like. When
djustment as ones mentioned above
improves the state, checking the portion around the
motor may sometimes improves it.
Phenomenon
Socks occur during the revolutions at
Over current occurs at the start
The motor cannot provide enough
torque for the load is too high for the
motor to at the start.
Acceleration is not possible.
In addition to the adjustment of the sensorless
vector control, refer to the following description.
quency [bb101] at a value of 2.0
kHz or higher. A set frequency of 1.9 kHz or lower
When the revolution of the motor is hindered by
breaking or the motor lock caused by foreign
objects may cause over current or the like. When
djustment as ones mentioned above
improves the state, checking the portion around the
motor may sometimes improves it.
Estimated cause(s)
Socks occur during the revolutions at
• Boost amount is too large.
• Boost amount is too small.
In addition to the adjustment of the sensorless
vector control, refer to the following description.
quency [bb101] at a value of 2.0
kHz or higher. A set frequency of 1.9 kHz or lower
When the revolution of the motor is hindered by
breaking or the motor lock caused by foreign
objects may cause over current or the like. When
djustment as ones mentioned above
improves the state, checking the portion around the
Estimated cause(s)
Boost amount is too large.
Boost amount is too small.
12-9-15
vector control, refer to the following description.
quency [bb101] at a value of 2.0
kHz or higher. A set frequency of 1.9 kHz or lower
When the revolution of the motor is hindered by
objects may cause over current or the like. When
improves the state, checking the portion around the
• If an application of load results in a great amount of
change in the inverter's output frequency monitor
[dA
change the frequencies for the overload limiting
function, the momentary
the over voltage suppression function may work
depending upon the settings of the functions. For
details, see "Chap. 18:
• Make an adjustment by decrementing the zero
each time.
• Make an adjustment by decrementing the zero
[HC112] by 5% each time.
• Make an adjustment by incrementing the zero
[HC112] by 5% each time.
15
If an application of load results in a great amount of
change in the inverter's output frequency monitor
[dA-01], functions wich change
change the frequencies for the overload limiting
function, the momentary
the over voltage suppression function may work
depending upon the settings of the functions. For
details, see "Chap. 18:
Exemplar measures to be taken
Make an adjustment by decrementing the zero
each time.
n adjustment by decrementing the zero
[HC112] by 5% each time.
Make an adjustment by incrementing the zero
[HC112] by 5% each time.
If an application of load results in a great amount of
change in the inverter's output frequency monitor
functions wich change
change the frequencies for the overload limiting
function, the momentary-stop non
the over voltage suppression function may work
depending upon the settings of the functions. For
details, see "Chap. 18: Troubleshooting."
Exemplar measures to be taken
Make an adjustment by decrementing the zero
n adjustment by decrementing the zero
Make an adjustment by incrementing the zero-
Inverter Function
If an application of load results in a great amount of
change in the inverter's output frequency monitor
functions wich change automatically
change the frequencies for the overload limiting
stop non-stop function,
the over voltage suppression function may work
depending upon the settings of the functions. For
Troubleshooting."
Exemplar measures to be taken
Make an adjustment by decrementing the zero-speed range limiter [HC110] by 5%
n adjustment by decrementing the zero-speed range boost at the start
-speed range boost at the start
Inverter Function
If an application of load results in a great amount of
change in the inverter's output frequency monitor
automatically
change the frequencies for the overload limiting
stop function,
the over voltage suppression function may work
depending upon the settings of the functions. For
Troubleshooting."
Exemplar measures to be taken
speed range limiter [HC110] by 5%
speed range boost at the start
speed range boost at the start
Inverter Function
If an application of load results in a great amount of
change in the inverter's output frequency monitor
depending upon the settings of the functions. For