Fuji Electric Frenic Mega Series User Manual page 467

Setting with analog inputs
To specify a peripheral speed (line speed) using analog inputs, set an analog input (0 to 100%)
based on the following equation.
p
Analog input (%) =
240
Where
V: Peripheral speed (Line speed) in m/min
f : Maximum frequency 1 (F03)
max
Adjustment
Like usual speed controls, it is necessary to adjust the speed command filter, speed detection filter,
P gain, and integral time in the speed control sequence that controls the peripheral speed at a
constant level.
Function code Name
Speed control
d01
(Speed command filter)
Speed control
d02
(Speed detection filter)
Speed control P
d03
(Gain)
Speed control I
d04
(Integral time)
Cancel constant peripheral speed control -- Hz/LSC
(Function code E01 to E07, data = 70)
Turning ON Hz/LSC cancels constant peripheral speed control. This disables the frequency
compensation of PI operation, resulting in no compensation for a take-up roll getting bigger and
an increase in the winding speed.
Use this signal to temporarily interrupt the control for repairing a thread break, for example.
Hz/LSC
OFF Enable constant peripheral speed control (depending on d41 setting)
Cancel constant peripheral speed control (V/f control, without compensation for a
ON
take-up roll getting bigger)
b 100
V
r 1 a fmax
If an excessive overshoot occurs for a speed command
change, increase the filter constant.
If ripples are superimposed on the speed detection signal
so that the speed control gain cannot be increased,
increase the filter constant to obtain a larger gain.
If hunting is caused in the motor speed control, decrease
the gain.
If the motor response is slow, increase the gain.
If the motor response is slow, decrease the integral time.
Function
5-235
5.3 Function Code Index by Purpose
Key points
Function
Code
Details
F codes
E codes
C codes
P codes
H codes
A codes
b codes
r codes
J codes
d41-d70
U codes
y codes