B6: Dwell Function - YASKAWA L1000A Technical Manual

5.2 b: Application

◆ b6: Dwell Function

The Dwell function temporarily holds the frequency reference at a predefined value for a set time then continues
accelerating or decelerating.
Figure 5.3 shows how the Dwell function works.
Note: Set the stopping method to "Ramp to Stop" (b1-03 = 0) to use the Dwell function.
Figure 5.3
b6-01, b6-02: Dwell Speed, Dwell Time at Start
■
Parameter b6-01 determines the speed that is held or the time set in b6-02 during acceleration.
No.
b6-01
b6-02
<1> A setting of 100% is equal to the maximum speed.
b6-03, b6-04: Dwell Speed, Dwell Time at Stop
■
Parameter b6-03 determines the speed that is held for the time set in b6-04 during deceleration.
No.
b6-03
b6-04
<1> A setting of 100% is equal to the maximum speed.
◆ b7: Droop Control (CLV/PM)
Droop control automatically balances the load level between two motors driving the same load. The drive in which Droop
control is activated shifts the load from one motor to another by automatically reducing the speed when the torque
reference rises, and automatically increasing the speed when the torque reference falls.
Note: Disable Inertia Compensation (n5-01 = 0) whenever using Droop control.
■ b7-01: Droop Control Gain
Sets the amount of speed reduction when the torque reference is 100%. The gain is set as a percentage of the maximum
output speed. A setting of 0.0% disables the Droop control function.
No.
b7-01
Figure 5.4
170
OFF
Up/Down Command
Output Speed
b6-02
Figure 5.3 Dwell Function at Start and Stop
Parameter Name
Dwell Speed at Start
Dwell Time at Start
Parameter Name
Dwell Speed at Stop
Dwell Time at Stop
Parameter Name
Droop Control Gain
Speed
Speed reference
0
Figure 5.4 Droop Control Gain
YASKAWA ELECTRIC SIEP C710616 38F YASKAWA AC Drive - L1000A Technical Manual
ON OFF
common_TMonly
b6-01
b6-03
b6-04
Setting Range
0.0 to 100.0%
0.0 to 10.0 s
Setting Range
0.0 to 100.0%
0.0 to 10.0 s
Setting Range
0.0 to 100.0%
Droop control gain
b7-01
common_TMonly
Torque
100%
Default
0.0%
<1>
0.0 s
Default
0.0%
<1>
0.0 s
Default
0.0%