YASKAWA F7 Programming Manual page 42

C5-05 ASR Limit
Setting Range: 0.0 to 20.0 %
Factory Default: 5.0 %
Sets ASR frequency compensation limit as a percentage of maximum output frequency (El -04). This function is enabled when
V/f control with PG feedback is selected as the control method (A1-02).
C5-06 ASR Delay Time
Setting Range: 0.000 to 0.500 sec
Factory Default: 0.004 sec
This parameter sets the filter time constant for the time from the speed loop to the torque command output. Mechanical backlash
in an application causes secondary current (I
of ASR parameters. The output delay time constant is used to control these secondary current (I
C5-07 ASR Switching Frequency
Setting Range: 0.0 to 400.0 Hz
Factory Default: 20.0 Hz
Sets frequency to change ASR proportional gain and integral time constant in units of 0.1Hz when flux vector control is selected.
Notes:
1. When C5-07 = 0, proportional gain 1 (C5-01) and integral time 1 (C5-02) are selected.
2. During V/f control with PG feedback (A1-02 = 1), the frequency switching level becomes the maximum output frequency
(E1-04).
3. The multi-function input "77: ASR Gain Switch" has priority over the ASR switch frequency (C5-07).
C5-08 ASR Integral Limit
Setting Range: 0 to 400 %
Factory Default: 400 %
Parameter C5-08 adjusts the amount of integral control of the automatic speed regulator in the Flux Vector control mode (A1-
02 = 3). Setting parameter C5-08 to zero will make the ASR control proportional. Setting C5-08 to greater than 0% will make
the ASR control proportional and sets the ASR integral upper limit as a percentage of rated torque of the connected motor.
) reference variations in the motor's rotor. This condition can prevent the adjustment
2
C5-07
0
or
E1-04
Fig. 28 ASR Switching Frequency Level
Torque
Fig. 29 ASR Integral Limit Function
C5-01
C5-02
P · N
f =
FB
120
C5-03
where:
C5-04
P = Number of Motor Poles
N = Motor RPM
* When C5-07 ="0", proportional gain 1 (C5-01)
f
FB
and integral time 1 (C5-02) are selected.
Motor Speed
C5-08=0
P Control
C5-08 > 0%
C5-08=400%
P-I Control
Slip
Programming 34
) reference variations.
2
Speed