6
-124
Speed Control (ASR) Gain Adjustment for Vector Control
Use the following procedure to adjust C5-01 and C5-03 with the mechanical system and actual load con-
nected.
Fine Adjustments
When you want even finer gain adjustment, adjust the gain while observing the speed waveform. Constant set-
tings like those shown in the following table will be necessary to monitor the speed waveform.
The multi-function analog outputs have the following functions with these constant settings.
•
Multi-function analog output 1 (terminal FM): Outputs Inverter's output frequency (0 to ±10 V).
•
Multi-function analog output 2 (terminal AM): Outputs actual motor speed (0 to
±
10 V).
E
Speed control integral reset
Enables switching between PI and P control for the speed control loop.
No
No
No
Yes
Yes
77
Speed control (ASR) proportional gain switch (switching between C5-01 and C5-03)
OFF: Use proportional gain in C5-01
ON: Use proportional gain in C5-03
No
No
No
Yes
Yes
Constant
No.
Name
Setting
Explanation
H4-01
Multi-function analog output 1 terminal FM monitor selection
2
Settings that allow multi-func-
tion analog output 1 to be used
to monitor the output frequency.
H4-02
Multi-function analog output 1 terminal FM output gain
1.00
H4-03
Multi-function analog output 1 terminal FM bias
0.0
H4-04
Multi-function analog output 2 terminal AM monitor selection
5
Settings that allow multi-func-
tion analog output 2 to be used
to monitor the motor speed.
H4-05
Multi-function analog output 2 terminal AM output gain
1.00
H4-06
Multi-function analog output 2 terminal AM bias selection
0.00
H4-07
Multi-function analog output 1 terminal signal level selection
1
Settings that allow a 0 to
±
10 V
signal range to be monitored.
H4-08
Multi-function analog output 2 terminal signal level selection
1
Set-
ting
Value
Function
Control Methods
V/f
V/f
with
PG
Open
Loop
Vec-
tor
1
Flux
Vec-
tor
Open
Loop
Vec-
tor
2
At zero-speed, increase C5-01
(ASR P Gain 1) until there is no oscillation.
At zero-speed, decrease C5-02
(ASR I Time 1) until there is no oscillation.
Does oscillation develop when the motor
operates at the maximum normal operating
speed?
Decrease C5-01 (ASR P Gain 1).
Increase C5-02 (ASR I Time 1).
YES
NO
Adjustment completed.
(When there is higher-level position control,
adjust the position loop gain so that
overshooting/undershooting doesn’t occur.)
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