Omron VARISPEED F7 User Manual page 223

In V/f control with PG the ASR adjusts the output frequency in order to eliminate the deviation between the
speed reference and the measured speed (PG feedback).
PG.
Frequency
Reference
Motor
Speed
Related Parameters
Parameter
No.
C5-01
C5-02
C5-03
C5-04
C5-05
C5-06
C5-07
C5-08
F1-07
6
* 1. When the control method is changed, these values are reset to the factory settings for the selected control mode (V/f with PG control
mode factory settings are given).
Multi-function Digital Inputs (H1-01 to H1-05)
Set
Value
D V/f control with/without PG
E Speed control (ASR) integral disable
77 ASR proportional gain switch over
V/f Control with/without PG Selection: "D"
When one of the digital inputs is set to "D" this input can be used to switch over to normal V/f control and
•
thereby to disable the ASR.
The ASR is disabled when the multifunction input is ON.
•
Speed Control Integral Disable: "E"
When one of the digital inputs is set to "E" this input can be used to switch the speed control between PI
•
and P control.
P control is active when the input is ON (Integral value is reset).
•
ASR Gain switching: "77"
When one of the digital inputs is set to "77" this input can be used to switch between the ASR P gains set
•
in C5-01 and C5-03.
If the input is enabled C5-03 will be used. If the input is disabled C5-01 will be used.
•
40
6-
C5-01/03
+
P
-
Fig 6.42 ASR Structure for V/f control with PG
Name
ASR proportional (P) gain 1
ASR integral (I) time 1
ASR proportional (P) gain 2
ASR integral (I) time 2
ASR limit
ASR delay time
ASR switching frequency
ASR integral limit
Integral value during accel/decel enable/disable
Function
Fig 6.42 shows the ASR structure for V/f control with
+
+
+
C5-05
I
ASR Limit
C5-02/04
Change
Factory during
Setting Opera-
tion
* 1
Yes
20.00
0.500 s *1 Yes
20.00 *1 Yes
0.500 s *1 Yes
5.0% No
0.004 s No
0.0 Hz No
400% No
0 No
Output
Frequency
+
Control Methods
Open Closed
V/f with
V/f Loop Loop
PG
Vector Vector
No A No A
No A No A
No A No A
No A No A
No A No No
No No No A
No No No A
No No No A
No A No No
Control Methods
V/f Open Closed
V/f with Loop Loop
PG Vector Vector
No Yes No No
No Yes No Yes
No Yes No Yes