YASKAWA iQpump Micro CIMR-PW Series User Manual page 137

b5-16: PID Sleep Delay Time
n
Sets the delay time to activate or deactivate the PID Sleep function.
No.
b5-16
b5-17: PID Accel/Decel Time
n
The PID acceleration/deceleration time is applied on the PID setpoint value.
As the normal acceleration times C1-oo are applied after the PID output, they reduce the responsiveness of the system and
can cause hunting or over- and undershooting when the setpoint changes quickly. Using the PID acceleration/deceleration
time instead helps to avoid such problems.
The PID acceleration/deceleration time can be canceled using a digital input programmed for "PID SFS cancel" (H1-oo =
34).
No.
b5-17
b5-32: Integrator Ramp Limit
n
The Integrator Ramp Limit provides a way to tune the PI loop so that it is less reactive to sudden spikes and dips in the feedback
signal. Pressure waves may develop in a pressure regulated systems with long piping and the Integrator Ramp Limit function
helps curb instability in the PI controller in such situations.
When the Integrator Ramp Limit is enabled, the PI Integrator is limited to +/- the b5-32 value of the soft starter output (output
frequency without slip compensation).
A b5-32 setting of zero disables this feature and the integrator is allowed to operate normally.
This feature only applies to the drive standard PI loop. It does not apply to the PI loop associated with the water level control
function (well draw-down control) (Q4 parameters).
No.
b5-32
b5-34: PID Output Lower Limit
n
Sets the minimum possible PID controller output as a percentage of the maximum output frequency (E1-04). The lower limit
is disabled when set to 0.00%
No.
b5-34
b5-35: PID Input Limit
n
Sets the maximum allowed PID input as a percentage of the maximum output frequency (E1–04). Parameter b5-35 acts as a
bipolar limit.
No.
b5-35
b5-39: PID System Units Display Digits
n
Determines the number of digits for the user-defined display for the PID setpoint (Q1-oo) and PID feedback monitors (U5-01,
U5-04). The setting value is equal to the number of decimal places.
No.
b5-39
YASKAWA TOEP YAIQPM 03B YASKAWA AC Drive - iQpump Micro User Manual
Name
PID Sleep Delay Time
Name
PID Accel/Decel Time
Name
Integrator Ramp Limit
Name
PID Output Lower Limit
Name
PID Input Limit
Name
PID System Units Display Digits
5.2 b: Application
Setting Range
0.0 to 25.5 s
Setting Range
0 to 255 s
Setting Range
0.0 to 10.0 Hz
Setting Range
-100.0 to 100.0%
Setting Range
0.0 to 1000.0%
Setting Range
0 to 3
Default
0.0 s
Default
0 s
Default
0.0 Hz
Default
0.00%
Default
1000.0%
5
Default
1
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