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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.
No.
Name
Setting Range
Default
b5-35
PID Input Limit
0.0 to 1000.0%
1000.0%
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b5-38/39 PID Setpoint/Monitor User Display Value/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 feedback monitors (U5-01/04).
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.
Name
Setting Range
Default
b5-38
PID Setpoint/Monitor User Display Value
0 to 60000
Determined by
b5-20
b5-39
PID Setpoint and Display Digits
0 to 3
Determined by
b5-20
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b5-40: Frequency Reference Monitor Content During PID
Sets the content on the frequency reference monitor display (U1-01) when PID control is active.
No.
Name
Setting Range
Default
b5-40
Frequency Reference Monitor Content During PID
0 or 1
0
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.
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b5-47: Reverse Operation Selection 2 by PID Output
Reverses operation selection when b5-01 is set to 3 or 4.
No.
Name
Setting Range
Default
b5-47
Reverse Operation Selection 2 by PID Output
0 or 1
1
Setting 0: Zero Limit when PID Output is a Negative Value
Setting 1: Reverse Operation when PID Output is a Negative Value (Zero Limit if the Reverse Operation Is Prohibited
by b1-04)
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b6: Dwell Function
The reference hold or Dwell function is used to temporarily hold the output frequency at a set reference value, for a set time,
and then continue to ramp up or stop.
The Dwell at start function can be used when driving a permanent magnet motor in V/f Control, or a motor with a heavy
starting load. The pause in acceleration allows the PM motor rotor to align with the stator field of the motor, thus reducing the
starting current.
Dwell works as shown in the figure below.
Note:
Using the Dwell function requires that the stopping method for the drive be set to “Ramp to Stop” (b1-03 = 0).
5.2 b: Application
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YASKAWA ELECTRIC SIEP C710606 18F YASKAWA AC Drive – V1000 Technical Manual