BONFIGLIOLI Agile Operating Instructions Manual page 225

Parameter descriptions
480 Fixed Frequency 1 (in case of missing PID real value)
If the PID real value is missing (<0.5%), the output frequency is guided to the value of
480. The minimum value monitoring prevents an acceleration of the drive if the PID real
quency 1
value is missing. If the PID real value is available again, the controller continues operation automati-
cally.
Parameters
No. Description
480 Fixed Frequency 1
The
Fixed Frequency 1
419. If the
Frequency Fixed Frequency 1
418, the output frequency is guided to
cy
below
Minimum Frequency
444 Amplification (P)
Parameter
Amplification
plied. The control deviation can be reduced by large amplification values, but very high values may
cause the control circuit to become unstable (vibrations). If the value is set too low, large control de-
viations are possible.
Parameters
No. Description
444 Amplification
The sign of the amplification defines the control direction, i.e. if the PID real value increases and the
sign of the amplification is positive, the output frequency is reduces (e.g. pressure control). With a
rising PID real value and negative sign of the amplification, the output frequency is increased (e.g. in
temperature control systems, refrigerating machines, condensers).
445 Integral Time (I)
Parameter
Integral Time
signal. The I controller totals the control deviation over time and divides the result by the value of
445. If the
Integral Time
sated quickly. Very low values for the
unstable (vibrations).
Parameters
No. Description
445 Integral Time
If parameter
Integral Time
The amplification (P) is included in the calculation of the integral time (I), see figure PID controller.
BONFIGLIOLI recommends setting the
which is 2 ms in the case of the
441 Max. I-Component
Parameter
Max. I-Component
tions with quickly changing load torques, vibrations of the control circuit are possible. In order to
avoid vibration, parameter
Parameters
No. Description
441 Max. I-Component
Control functions
Min.
-999.99 Hz
480 must be in the range between
480 is set to a value smaller than the
Minimum Frequency
418.
444 defines the amplification factor by which the control deviation is multi-
Min.
-15.00
445 defines the time constant for calculation of the integral of the PID input
445 is set to small values, the control deviation is compen-
Integral Time
Integral Time
Min.
0 ms
445 is set to zero, the I controller is deactivated.
Integral Time
Agile
device.
441 defines the maximum output signal of the I-controller. In applica-
441 can limit the output signal of the I-controller.
Max. I-Component
Min.
0.00 Hz
Setting
Max. Fact. sett.
999.99 Hz
Minimum Frequency
418. The frequency will not drop
Setting
Max. Fact. sett.
+15.00
445 may cause the control circuit to become
Setting
Max. Fact. sett.
32767 ms
445 to a value greater than the sampling time,
Setting
Max. Fact. sett.
999.99 Hz
225
06/2013 Operating Instructions
Fixed Fre-
0.00 Hz
418 and
Maximum
Minimum Frequen-
1.00
200 ms
50.00 Hz
Agile