n
b5-17: PID Accel/Decel Time
The PID acceleration/deceleration time is applied on the PID setpoint value.
When the setpoint changes quickly, the normal C1-
oo
acceleration times reduce the responsiveness of the system as they
are applied after the PID output. The PID accel/decel time helps avoid the hunting and overshoot and undershoot that can
result from the reduced responsiveness.
The PID acceleration/deceleration time can be canceled using a digital input programmed for “PID SFS cancel” (H1-
oo
=
34).
No.
Name
Setting Range
Default
b5-17
PID Accel/Decel Time
0.0 to 6000.0 s
0.0 s
n
b5-18: PID Setpoint Selection
Enables or disables parameter b5-19 for PID setpoint.
No.
Parameter Name
Setting Range
Default
b5-18
PID Setpoint Selection
0, 1
0
Setting 0: Disabled
Parameter b5-19 is not used as the PID setpoint.
Setting 1: Enabled
Parameter b5-19 is used as PID setpoint.
n
b5-19: PID Setpoint Value
Used as the PID setpoint if parameter b5-18 = 1.
No.
Name
Setting Range
Default
b5-19
PID Setpoint Value
0.00 to 100.00%
0.00%
n
b5-20: PID Setpoint Scaling
Determines the units for the PID Setpoint Value (b5-19) and monitors U5-01 and U5-04. The units for setting and display can
be changed with b5-20.
No.
Parameter Name
Setting Range
Default
b5-20
PID Setpoint Scaling
0 to 3
1
Setting 0: 0.01 Hz
The setpoint and PID monitors are displayed in Hz with a resolution of 0.01 Hz.
Setting 1: 0.01% (100.00%: Maximum PID Feedback)
The setpoint and PID monitors are displayed as a percentage with a resolution of 0.01%.
Setting 2: r/min (Set the Motor Poles)
The setpoint and PID monitors are displayed in r/min with a resolution of 1 r/min.
Setting 3: User Defined (Determined by b5-38 and b5-39)
Parameters b5-38 and b5-39 determine the units and resolution used to display the values the setpoint in b5-19, and PID
monitors U1-01 and U1-04.
n
b5-34: PID Output Lower Limit
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.
Name
Setting Range
Default
b5-34
PID Output Lower Limit
-100.0 to 100.0%
0.00%
n
b5-35: PID Input Limit
Sets the maximum allowed PID input as a percentage of the maximum output frequency (E1-04). Parameter b5-35 acts as a
bipolar limit.
5.2 b: Application
214
YASKAWA ELECTRIC SIEP C710636 04D U1000 Industrial MATRIX Drive Technical Manual
Summary of Contents for U1000 iQpump Drive
Page 705: ......
