Dancer feedback speed control details
82
Tension PI gain tuning status indicator
• The tension PI tuning status can be checked by reading the
Pr.1219
setting. Alternatively, check the tension PI gain tuning
monitor, which is displayed instead of the output voltage monitor.
• The monitor is displayed on the operation panel as shown below.
NOTE
• When the tuning is forcibly terminated or a tuning error is displayed, tension PI gain tuning has not been properly completed.
Tuning error causes and corrective actions
• If a tuning error occurs, refer to the following for corrective actions.
Status
Monitor readout of Pr.1219 Tension PI gain tuning status
Tuning during stopping
Tuning during operation
Not performed
0
—
Tuning start
1
—
Tuning in progress
2
12
Tuning completed
3
13
Forced end
8
Tuning error
9, 90 to 96
Error
indication
Name
Possible cause
Corrective action
8
Forced end
The start signal has been turned OFF.
The PGT signal has been turned OFF.
The inverter has been reset.
An output shutoff has occurred.
—
9
Protective function
activation
An inverter protective function has been activated.
Refer to the FR-A800 Instruction Manual
(Detailed) to identify the cause and take
corrective actions.
90
Input upper limit
error
A value higher than the
Pr.131 PID upper limit
setting
is measured while
Pr.554 PID signal operation
selection
= "1 or 3".
Check the
Pr.131
and
Pr.554
settings.
91
Input lower limit
error
A value lower than the
Pr.132 PID lower limit
setting
is measured while
Pr.554 PID signal operation
selection
= "1 or 3".
Check the
Pr.132
and
Pr.554
settings.
92
Deviation limit error
The deviation is higher than the
Pr.553 PID deviation
limit
setting while
Pr.554 PID signal operation
selection
= "2 or 3".
Check the
Pr.553
and
Pr.554
settings.
93
Timeout error
Tension PI gain tuning is not terminated within the time
set in
Pr.1211 Tension PI gain tuning timeout time
.
Set a larger value in
Pr.1211
.
94
Calculation error
The tuning calculation is inconsistent.
Vibration amplitude Xc is equal to or lower than the
amount of hysteresis.
Pr.1222 Target amplitude
is lower than the amount of
hysteresis.
• Tuning during stopping
The dancer signal may include noise. Set
a larger value in
Pr.1222
or take
countermeasures against noise to reduce
the dancer signal noise.
• Tuning during operation
Check the settings of
Pr.1222
and
Pr.1217
Limit cycle hysteresis
. The
Pr.1222
setting must be higher than the
Pr.1217
setting.
95
Setting error
PID control is disabled during tension PI gain tuning.
The PID control setting has been changed during
tension PI gain tuning.
Check that PID control can be performed
normally.
96
PID mode error
The switchover frequency is not reached while
Pr.127
PID control automatic switchover frequency
is set.
The stall prevention or regeneration avoidance
function is activated.
Frequency fluctuation occurred because of the
frequency jump, maximum frequency, or minimum
frequency.
Set "9999" in
Pr.127
.
Refer to the FR-A800 Instruction Manual
(Detailed) to check the setting.
Summary of Contents for A800 Plus Series
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