YASKAWA A1000 Technical Manual page 176

5.2 b: Application

b5-20: PID Setpoint Scaling
Determines the units that the PID setpoint (b5-19) is set in and displayed. Also determines the units for monitors U5-01
and U5-04. The units for setting/display can be changed with b5-20.
No.
b5-20
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: min -1 (set the motor poles)
The setpoint and PID monitors are displayed in 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.

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.
b5-34

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.
No.
b5-35

b5-38, b5-39: PID Setpoint User Display, PID Setpoint Display Digits
When parameter b5-20 is set to 3, the parameters b5-38 and b5-39 can be used to set a user defined display for the PID
setpoint (b5-19) and PID feedback monitors (U5-01, U5-04).
Parameter b5-38 determines the display value when the maximum frequency is output. Parameter b5-39 determines the
number of digits. The setting value is equal to the number of decimal places.
No.
b5-38
b5-39

b5-40: Frequency Reference Monitor Content During PID
Sets the content of the frequency reference monitor display (U1-01) when PID control is active.
No.
b5-40
Setting 0: Frequency Reference after PID
Monitor U1-01 displays the frequency reference increased or reduced for the PID output.
Setting 1: Frequency Reference
Monitor U1-01 displays the frequency reference value.
176
Parameter Name
PID Setpoint Scaling
-1
Name
PID Output Lower Limit
Name
PID Input Limit
Name
PID Setpoint User Display
PID Setpoint Display Digits
Name
Frequency Reference Monitor Content During PID
YASKAWA ELECTRIC SIEP C710616 27G YASKAWA AC Drive A1000 Technical Manual
with a resolution of 1 min
Setting Range
0 to 3
-1
.
Setting Range
-100.0 to 100.0%
Setting Range
0.0 to 1000.0%
Setting Range
1 to 60000
0 to 3
Setting Range
0 or 1
Default
1
Default
0.00%
Default
1000.0%
Default
Determined by b5-20
Determined by b5-20
Default
0