6-144
îš„Related Constants
îš„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.
îš„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.
Fig 6.80 Droop Control Gain
Con-
stant
Number
Name
Description
Setting
Range
Factory
Setting
Change
during
Opera-
tion
Control Methods
MEMO
BUS
Regis-
ter
Display
V/f
V/f
with
PG
Open
Loop
Vector
1
Flux
Vec-
tor
Open
Loop
Vector
2
b7-01
Droop control
gain
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.
0.0 to
100.0
0.0 Yes No No No A A 1CAH
Droop Quantity
b7-02
Droop control
delay time
Droop control responsiveness
constant
When hunting or oscillation
occurs, increase the value.
0.03 to
2.00
0.05 s No A A A A A 1CBH
Droop Delay
Time
Torque
Speed
Speed reference
0
100%
b7-01
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