Yaskawa VS-616G5 Series Revision F Programming Manual - Manual (Page 27)

VS-616G5 Programming Manual 27
V/f V/f w/PG Open Loop
Vector
Flux
Vector
Setting Range: 0.0 to 10.0s
Factory Default: 0.0s
Sets the amount of time that the frequency reference “dwells” during deceleration in units of 0.1s.
B7 Droop Control
The Drooping function reduces the motor speed based on the load torque of the motor.
Setting Range: 0.0 to 100.0
Factory Default: 0.0
Parameter b7-01 sets the amount of motor speed reduction when the motor is producing 100% of rated
torque. The actual amount of motor speed reduction is based on the ratio of the amount of motor
torque and the maximum output frequency (E1-04).
Setting Range: 0.03 to 2.00
Factory Default: 0.05
Parameter b7-02 sets the response time for the drooping function. Decreasing the droop delay time,
will cause the response to become quicker; however, instability may occur.
B8 Energy Saving
This feature can save energy during operation under lightly loaded conditions, by decreasing output
voltage, energy-saving operation is made available. Energy saving control is enabled by a multi-func-
tion contact input, when control mode selection (A1-02) is set to “0” (V/f Control) or “1” (V/f w/PG
Fdbk).
Parameters B8-03, B8-04 and B8-05 are for energy savings in the vector modes. B8-01 and B8-02 are
only functional in the V/f modes via a multi-function input command. Parameters B8-03, B8-04 and
B8-05 are for automatic energy savings in the vector modes.
Setting Range: 0 to 100%
Factory Default: 80%
The output voltage during energy-saving operation is the product of the normal V/f settings (El-03 to
E1-10) and the energy saving gain. The output voltage decreases and recovers in the voltage recovery
time (L2-04). As the energy saving gain increases, the output voltage increases also. This feature is
only enabled by a multi-function contact input.
B6-04 Dwell Time at Stop Dwell Time @Stop A A A A
B7-01 Droop Control Gain Droop Quantity - - - A
B7-02 Droop Control Delay Time Droop Delay Time - - - A
B8-01 Energy Saving Gain Energy Save Gain A A - -
Section B: Application Parameters
B7 Droop Control and B8 Energy Saving