Auto Torque Boost Function; Auto Torque Boost Selection; Slip Compensation Response Time Constant; Slip Compensation Multiple - Sanken SVCO6 Instruction Manual

7-3 Description of Functions

Auto torque boost function

F2007

Auto torque boost selection

F2008

Slip compensation response time constant

F2009

Slip compensation multiple

The function of auto torque boost based on V/f control code. It can select voltage compensation and slip compensation.
However, since the motor parameters are required to be set, please carry out this function after the auto tuning 2 of the
motor parameters have been finished (when the motor parameters are not clear).
Code No. Function Name
boost
F2007 Auto torque
F2008 Slip compensation response time
constant
F2009 Slip compensation multiple
① F2007=1 Auto torque boost function (voltage compensation function)
The function to automatically adjust the voltage according to the load condition.
When the load is heavy (large current), the output voltage will be increased to output torque.
② F2007=2 Auto torque boost function (slip frequency compensation function)
If the load becomes heavier, the motor speed will decrease, and the motor slip will become larger. The auto slip
compensation will increase the precision of the speed.
Note 1: In order to cooperate with the control of motor characteristics, please carry out the auto tuning of motor
parameters (F1001=11: motor parameter auto tuning 2).
Note 2: When a special motor is used and the output is unstable, the auto torque boost can not be selected. Please select
torque boost (F1004).
Note 3: When F1005 is 0, the auto torque boost is noneffective.
Note 4: Not effective during DC braking actions.
Note 5: When V/f pattern F1003=2 & 3 (low speed & deceleration mode) is set, it is noneffective.
Note 6: V•f separation control is noneffective.
Note 7: Energy saving function (F1901=1 & 2) is noneffective.
Note 8: When the settings of special motor and auto tuning conflict, the auto tuning will not be carried out. Please set the
motor parameters manually.
③ F2008 Slip compensation response time constant
The function to set the slip compensation response time.
Note 1: When the speed is unstable, please increase this time constant.
Note 2: The large loading inertia will result in a voltage alarm, please make an adjustment.
④ F2009 Slip compensation multiple
The function to set the speed precision of slip frequency compensation.
Normally is ―1‖, no setting is required. When it is higher than command frequency, please set it to be smaller than 1.
selection 0:No auto torque
1:Voltage compensation function
2:Slip frequency compensation function
-
0 1000(Setting 1=10ms)
-
0.01 2
- 186 -
Data Content
boost
Setting Factory
Resolution Presets
1 0
1 10
0.01 1