YASKAWA A1000 HHP - Page 41

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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
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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.
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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%
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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.
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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%
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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.
1.2 b: Application
YASKAWA ELECTRIC SIEP YEAHHP 01B YASKAWA AC Drive – A1000 HHP Programming Manual
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Parameter Details