Omron SYSDRIVE 3G3FV

5-39
5-4-4 Speed Loop (ASR) Structure
The following block diagram shows the structure of the speed loop.
Frequency
reference
Detected
speed
Secondary current reference
U1-21 U1-22
48
Note In vector flux control, the ASR’s P gain is the maximum frequency standard.
H Regular Gain Settings (C5-01 and C5-02)
Parameter C5-01 sets the proportional gain of the speed loop (ASR), and C5-02 sets the integral time.
Both of these parameters can be changed during operation.
Parameter Display Setting range Units Default
Valid access levels*
number
py
name
gg
setting
V/f
Control
V/f with
PG
Open Loop
Vector
Flux
Vector
C5-01 ASR P Gain 1 0.00 to 300.00 Factor 20.00 --- B --- B
C5-02 ASR I Time 1 0.000 to 10.000 s 0.500 --- B --- B
Note B: Basic or Advanced
---: Not applicable.
H Low-speed Gain Settings (C5-03, C5-04, and C5-07)
Use these parameters to use dif ferent proportional gain and integral time settings for low-speed opera -
tion.
Parameter C5-03 sets the proportional gain of the speed loop (ASR), and C5-04 sets the integral
time. Both of these parameters can be changed during operation.
Parameter Display Setting range Units Default
Valid access levels*
number
py
name
gg
setting
V/f
Control
V/f with
PG
Open Loop
Vector
Flux
Vector
C5-03 ASR P Gain 2 0.00 to 300.00 Factor 20.00 --- B --- B
C5-04 ASR I Time 2 0.000 to 10.000 s 0.500 --- B --- B
Note B: Basic or Advanced
---: Not applicable.
Parameter
C5-07 is the “ASR Gain Switching Frequency Level.” ASR P Gain 1 and ASR I T ime 1 are
used when the frequency is above this level. Below this level, the proportional gain and integral time
approach
ASR P Gain 2 and ASR I T ime 2 as the frequency approaches zero. This parameter cannot be
changed during operation.
Parameter Display name Setting Units Default
Valid access levels*
number
py
g
range setting
V/f
Control
V/f with
PG
Open Loop
Vector
Flux
Vector
C5-07 ASR Gain SW Freq 0.0 to 400.0 Hz 0.0 Not applicable. A
Note A: Advanced
Basic Operation Chapter 5