Adjusting Speed Control Loop (Asr) Gain - Omron SYSDRIVE 3G3FV User Manual

Basic Operation
H Multi-function Input Settings (H1-01 through H1-06)
V/f Mode Select (Setting D)
When one of the multi-function inputs is set to "D," the input can be used to enable and disable the speed
control loop. The speed control loop is disabled (normal V/f control) when the multi-function input is ON.
ASR Integral Reset (Setting E)
When one of the multi-function inputs is set to "E," the input can be used to switch the speed control loop
between P control and PI control. P control (integral reset) is used when the multi-function input is ON.

5-5-5 Adjusting Speed Control Loop (ASR) Gain

H Gain Adjustment Procedure
Use the following procedure to adjust the gain with the mechanical system and actual load connected.
Gain Adjustments at Minimum Frequency
1. Operate the motor at the minimum frequency.
2. Increase C5-03 (ASR proportional gain 2) to a level where there is no vibration.
3. Decrease C5-04 (ASR integral time 2) to a level where there is no vibration.
4. Monitor the Inverter's output current and verify that it is less than 50% of the Inverter's rated current.
If the output current exceeds 50% of the Inverter's rated current, decrease C5-03 and increase
C5-04.
Gain Adjustments at Maximum Frequency
1. Operate the motor at the maximum frequency.
2. Increase C5-01 (ASR proportional gain 1) to a level where there is no vibration.
3. Decrease C5-02 (ASR integral time 1) to a level where there is no vibration.
Gain Adjustments for Integral Control during Acceleration/Deceleration
Enable integral operation during acceleration and deceleration (with F1-07) when you want the motor's
speed to closely follow the frequency reference during acceleration and deceleration. Integral operation
causes the speed to reach the target speed as fast as possible, but may result in overshooting or under-
shooting.
1. Set F1-07 to "1" to enable integral operation at all times.
2. Make the parameter settings shown below in order to observe the speed waveform while making
fine adjustments to the gain.
Parameter
H4-01 Analog output selection (terminal 21) 21
H4-02 Analog output gain (terminal 21)
H4-03 Analog output bias (terminal 21)
H4-04 Analog output selection (terminal 23) 5
H4-05 Analog output gain (terminal 23)
H4-06 Analog output bias (terminal 23)
H4-07 Analog output level selection
Setting
Settings that allow multi-function analog output 1 g
to be used to monitor the ASR input. b d
1.00
0.0
Settings that allow multi-function analog output 2 g
to be used to monitor the motor speed. b d
1.00
0.0
1 This setting allows a 0 to 10 V signal range to
be monitored.
Chapter 5
Explanation
g
i h ASR i
g
i h d
5-51