YASKAWA CIMR-F7A Instruction Manual page 341

Related Constants
Con-
stant
Number
Droop control
b7-01
gain
Droop control
b7-02
delay time
Setting Precautions
Droop control is disabled if b7-01 is set to 0.0.
•
Set b7-01 to the amount of slip as the percentage of slip when the maximum output frequency is input and
•
the rated torque is generated.
Constant b7-02 is used to adjust the responsiveness of droop control. Increase this setting if oscillation or
•
hunting occur.
Disable the feed forward control (N5-01 = 0) when using the droop control function.
•
Setting the Droop Control Gain
Set the droop control gain as the speed reduction at a 100% motor torque, as a percentage of the maximum
output frequency.
-144
6
Name Description
Sets the slip as a percentage of
maximum frequency when the
maximum output frequency is
specified and the rated torque
occurs.
Droop-control is not performed
when the setting is 0.0.
Droop control responsiveness
constant
When hunting or oscillation
occurs, increase the value.
Torque
0
Fig 6.76 Droop Control Gain
Change
Setting Factory during
Range Setting Opera-
V/f
tion
0.0 to
0.0 Yes No
100.0
0.03 to
0.05 s Yes No
2.00
b7-01
Speed reference
Control Methods
MEMO
Open
BUS
V/f Flux
Loop
Regis-
with Vec-
Vec-
ter
PG tor
tor
No No A 1CAH
No No A 1CBH
100%
Speed