B6: Dwell Function - YASKAWA V1000 Series Technical Manual

• Set as a percentage of the maximum output frequency (E1-04).
Acts as a bipolar limit.
b5-36: PID Feedback High Detection Level
n
Determines the level at which a PID feedback alarm occurs. The alarm is triggered when PID feedback exceeds the level specified in b5-36 for longer
than the time designated in b5-37. When the alarm is triggered, "FbH" will appear on the operator and the drive will continue running. If the drive is set
to trigger a fault, then a fault will be output through one of the multi-function output terminals and a stop command will be issued.
No.
b5-36
• Set as a percentage of the maximum frequency output (E1-04).
b5-37: PID Feedback High Detection Time
n
Determines the time in seconds for the PID feedback level to trigger PID Feedback High detection.
No.
b5-37
b5-38: PID Setpoint / User Display
n
Determines whether or not the PID value is shown when the maximum output frequency is reached. Enabled when b5-20 = 3.
No.
b5-38
b5-39: PID Setpoint and Display Digits
n
Determines the number of digits for setting and displaying the PID setpoint. Enabled when b5-20 = 3.
No.
b5-39
u

b6: Dwell Function

b6-01/b6-02: Dwell Reference/Time at Start
n
b6-03/b6-04: Dwell Reference/Time at Stop
n
The reference hold or Dwell function is used to temporarily hold the output frequency at a set reference, for a set time, and then continue to ramp up. This
function can be used when driving a permanent magnet motor, or a motor with a heavy starting load. This pause in acceleration allows the magnets in a
permanent magnet motor to synchronize with the stator field of the motor, thus reducing traditionally high starting current.
Note: Using the Dwell function requires that the stopping method for the drive be set to "Ramp to Stop" (b1-03 = 0).
No.
b6-01
b6-02
b6-03
b6-04
Detailed Description
The figure below illustrates how the Dwell function works.
YASKAWA ELECTRIC SIEP C710606 18A YASKAWA AC Drive – V1000 Technical Manual (Preliminary)
Parameter Name
PID Feedback High Detection Level
Parameter Name
PID Feedback High Detection Time
Parameter Name
PID Setpoint / User Display
Parameter Name
PID Setpoint and Display Digits
Parameter Name
Dwell Reference at Start
Dwell Time at Start
Dwell Reference at Stop
Dwell Time at Stop
OFF
Run Command
Output Frequency
Figure 5.19 Dwell Function at Start and Stop
Setting Range
0 to 100
Setting Range
0.0 to 25.5
Setting Range
0 to 60000
Setting Range
0: Integer
1: One decimal places
2: Two decimal places
3: Three decimal places
ON OFF
b6-01
b6-03
b6-02 b6-04
5.2 b: Setup
Default
100
Default
1.0
Default
Determined by b5-20
Default
Determined by b5-20
Setting Range Default
0.0 to 400.0 0.0 Hz
0.0 to 10.0 0.0 s
0.0 to 400.0 0.0 Hz
0.0 to 10.0 0.0 s
5
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