E6581158
F-45
6
• When the torque current is above the specified dead zone torque current, the frequency is reduced
(during operation) or increased (during DC braking).
• The drooping function is activated above the torque current set with H.
• The amount of drooping varies depending on the amount of torque current.
The difference of the frequency after drooping can be calculated as follows.
Drooping speed
Drooping speed = Base frequency XN
Note
xHx (Torque current-H)
Note: If the base frequency exceeds 100Hz, count it as 100Hz.
Control is exercised between the starting frequency (H) and the maximum frequency
(HJ).
6.15 Braking setting functions
H : Braking mode selection
H
: Release frequency
H
: Release time
H
: Creeping frequency
H
: Creeping time
6.16 Conducting PID control
H : PID control wait time
H
: PID control
H
: Proportional gain
H
: Integral gain
H
: Differential (D) gain
• Function
Using feedback signals (4 to 20mA, 0 to 10V) from a detector, process control can be exercised, for
example, to keep the airflow, amount of flow or pressure constant.
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