Fine Adjustments - Omron VARISPEED G7 Instruction Manual

Set-
ting
Value
Speed control integral reset
E
Enables switching between PI and P control for the speed control loop.
Speed control (ASR) proportional gain switch (switching between C5-01 and C5-03)
77 OFF: Use proportional gain in C5-01
ON: Use proportional gain in C5-03
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.
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?
Adjustment completed.
(When there is higher-level position control,
adjust the position loop gain so that
overshooting/undershooting doesn't occur.)

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.
Constant
No.
H4-01
H4-02
H4-03
H4-04
H4-05
H4-06
H4-07
H4-08
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).
•
-124
6
Function
NO
Name
Multi-function analog output 1 terminal FM monitor selection
Multi-function analog output 1 terminal FM output gain
Multi-function analog output 1 terminal FM bias
Multi-function analog output 2 terminal AM monitor selection
Multi-function analog output 2 terminal AM output gain
Multi-function analog output 2 terminal AM bias selection
Multi-function analog output 1 terminal signal level selection
Multi-function analog output 2 terminal signal level selection
YES Decrease C5-01 (ASR P Gain 1).
Increase C5-02 (ASR I Time 1).
Setting
2
1.00
0.0
5
1.00
0.00
1
1
Control Methods
Open Open
V/f Loop Flux Loop
V/f with Vec- Vec- Vec-
PG tor tor tor
1 2
No No No Yes Yes
No No No Yes Yes
Explanation
Settings that allow multi-func-
tion analog output 1 to be used
to monitor the output frequency.
Settings that allow multi-func-
tion analog output 2 to be used
to monitor the motor speed.
Settings that allow a 0 to ±10 V
signal range to be monitored.