9
Scalar Control (V/f)
9-4 | CFW700
Speed
Total Reference
(Refer to
)
Slip Compensation
∆ F
Output
Active
Current
P0139
P0138
Figure 9.5:
Slip compensation block diagram
Output Voltage
(function of
the motor
load)
Speed
N
nom
V
nom
∆V
∆F
Figure 9.6:
V/f curve with slip compensation
For the adjustment of the parameter P0138 to compensate the motor slip:
1. Run the motor with no load at approximately half the working speed.
2. Measure the motor or equipment speed with a tachometer.
3. Apply rated load to the equipment.
4. Increase the content of P0138 until the speed reaches the value measured before with no load.
P0139 – Output (Active) Current Filter
Adjustable
Range:
0.0 to 16.0 s
Factory
Setting:
0.2 s
Properties:
V/f and VVW
Access groups
via HMI:
Description:
It sets the active current filter time constant.
It is used in the Automatic Torque Boost and Slip Compensation functions. Refer to the
and
It sets the response time of the Slip Compensation and of the Automatic Torque Boost. Refer to the
and
Summary of Contents for CFW700
Page 2: ......
Page 4: ......
Page 8: ...Summary...
Page 34: ...2 General Information 2 4 CFW700...
Page 38: ...3 About the CFW700 3 4 CFW700...
Page 56: ...7 Starting up and Settings 7 4 CFW700...
Page 58: ...8 Available Control Types 8 2 CFW700...
Page 78: ...10 VVW Control 10 8 CFW700...
Page 158: ...13 Digital and Analog Inputs and Outputs 13 28 CFW700...
