5.2 b: Application
130 YASKAWA ELECTRIC SIEP C710606 44B YASKAWA AC Drive T1000V Technical Manual
■ b5-40: Frequency Reference Monitor Content During PID
Sets the content of the frequency reference monitor display (U1-01) when PID control is active.
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.
◆ 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).
Figure 5. 21
Figure 5.21 Dwell Function at Start and Stop
■ b6-01, b6-02: Dwell Reference, Time at Start
b6-01 sets the frequency that is kept for the time set in b6-02 during acceleration.
■
b6-03, b6-04: Dwell Reference, Time at Stop
Parameter b6-03 sets the frequency that is kept for the time set in b6-04 during deceleration.
No. Name Setting Range Default
b5-40 Frequency Reference Monitor Content During PID 0 or 1 0
No. Name Setting Range Default
b6-01 Dwell Reference at Start 0.0 to 400.0 Hz 0.0 Hz
b6-02 Dwell Time at Start 0.0 to 10.0 s 0.0 s
No. Name Setting Range Default
b6-03 Dwell Reference at Stop 0.0 to 400.0 Hz 0.0 Hz
b6-04 Dwell Time at Stop 0.0 to 10.0 s 0.0 s
b6-01
b6-03
b6-02 b6-04
Run Command
Output Frequency
ON
OFFOFF
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