Hitachi SJ Series, User Manual

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Chapter 12
•
Chapter 12
• 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 p
motor may sometimes improves it.
！
Phenomenon
Slower motor revolution
at low speeds than what
is expected
A heavy load lowers the
revolution frequency of
the motor.
A heavy load raises the
revolution frequency of
the motor.
With a heavy load, an
acceleration causes an
over current.
Chapter 12
When the revolution of the motor is hindered by
breaking or the motor lock caused by foreign
may cause over current or the like. When
no such adjustment as ones mentioned above
improves the state, checking the p
motor may sometimes improves it.
Phenomenon Estimated cause(s)
Slower motor revolution
at low speeds than what
• Insufficient output voltage, which
in turn renders the t
insufficient
•
Insufficient frequency correction,
which in turn renders the torque
insufficient.
A heavy load lowers the
revolution frequency of
• Insufficient frequency correction,
which in turn renders the torque
insufficient.
A heavy load raises the
revolution frequency of
• An excessive frequency
correction raises the frequency.
With a heavy load, an
acceleration causes an
• An excessive voltage correction
increases the current.
• An excessive frequency
correction raises the frequency.
When the revolution of the motor is hindered by
breaking or the motor lock caused by foreign
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.
Estimated cause(s)
Insufficient output voltage, which
in turn renders the torque
insufficient
Insufficient frequency correction,
which in turn renders the torque
insufficient.
Insufficient frequency correction,
which in turn renders the torque
insufficient.
An excessive frequency
correction raises the frequency.
An excessive voltage correction
increases the current.
An excessive frequency
correction raises the frequency.
When the revolution of the motor is hindered by
breaking or the motor lock caused by foreign
may cause over current or the like. When
no such adjustment as ones mentioned above
ortion around the
Estimated cause(s)
Insufficient output voltage, which
orque
•
Insufficient frequency correction,
which in turn renders the torque
•
Insufficient frequency correction,
which in turn renders the torque
•
An excessive frequency
correction raises the frequency. •
An excessive voltage correction
increases the current. •
An excessive frequency
correction raises the frequency. •
12-9-10
When the revolution of the motor is hindered by
may cause over current or the like. When
ortion around the
• If an application of load results in a great amount of
change in the inverter's output frequency monitor
[dA
change the frequenci
function, the momentary
the over voltage suppression function may work
depending upon the settings of the functions. For
details, see "Chap. 18: Tips/FAQ/Troubleshooting."
Make an adjustment by incrementing the automatic torque boost voltage compensation
gain [HC101] by approximately 5% each time.
Make an adjustment
[HC102] by approximately 5% each time
Make an adjustment by incrementing the automatic torque boost slip compensation gain
[HC102] by approximately 5% each time
Make an adjustment by decrementing the automatic torque boost slip compensation
gain [HC102] by approximately 5% each time
Make an adjustment by decr
gain [HC101] by approximately 5% each time.
Make an adjustment by decrementing the automatic torque boost slip compensation
gain [HC102] by approximately 5% each time
10
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 frequenci
function, the momentary
the over voltage suppression function may work
depending upon the settings of the functions. For
details, see "Chap. 18: Tips/FAQ/Troubleshooting."
Exemplar measures to be taken
Make an adjustment by incrementing the automatic torque boost voltage compensation
gain [HC101] by approximately 5% each time.
Make an adjustment by incrementing the automatic torque boost slip compensation gain
[HC102] by approximately 5% each time
e an adjustment by incrementing the automatic torque boost slip compensation gain
[HC102] by approximately 5% each time
ment by decrementing the automatic torque boost slip compensation
gain [HC102] by approximately 5% each time
Make an adjustment by decrementing the automatic torque boost voltage compensation
gain [HC101] by approximately 5% each time.
Make an adjustment by decrementing the automatic torque boost slip compensation
by approximately 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: Tips/FAQ/Troubleshooting."
Exemplar measures to be taken
Make an adjustment by incrementing the automatic torque boost voltage compensation
gain [HC101] by approximately 5% each time.
by incrementing the automatic torque boost slip compensation gain
[HC102] by approximately 5% each time
e an adjustment by incrementing the automatic torque boost slip compensation gain
[HC102] by approximately 5% each time
ment by decrementing the automatic torque boost slip compensation
gain [HC102] by approximately 5% each time
ementing the automatic torque boost voltage compensation
gain [HC101] by approximately 5% each time.
Make an adjustment by decrementing the automatic torque boost slip compensation
by approximately 5% each time
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
es for the overload limiting
stop non-stop function,
the over voltage suppression function may work
depending upon the settings of the functions. For
details, see "Chap. 18: Tips/FAQ/Troubleshooting."
Exemplar measures to be taken
Make an adjustment by incrementing the automatic torque boost voltage compensation
by incrementing the automatic torque boost slip compensation gain
e an adjustment by incrementing the automatic torque boost slip compensation gain
ment by decrementing the automatic torque boost slip compensation
ementing the automatic torque boost voltage compensation
Make an adjustment by decrementing the automatic torque boost slip compensation
Inverter Function
If an application of load results in a great amount of
change in the inverter's output frequency monitor
automatically
es for the overload limiting
stop function,
the over voltage suppression function may work
depending upon the settings of the functions. For
details, see "Chap. 18: Tips/FAQ/Troubleshooting."
Make an adjustment by incrementing the automatic torque boost voltage compensation
by incrementing the automatic torque boost slip compensation gain
e an adjustment by incrementing the automatic torque boost slip compensation gain
ment by decrementing the automatic torque boost slip compensation
ementing the automatic torque boost voltage compensation
Make an adjustment by decrementing the automatic torque boost slip compensation
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
details, see "Chap. 18: Tips/FAQ/Troubleshooting."
Make an adjustment by incrementing the automatic torque boost voltage compensation
by incrementing the automatic torque boost slip compensation gain
e an adjustment by incrementing the automatic torque boost slip compensation gain
ementing the automatic torque boost voltage compensation