Scalar Control (V/f)
9-4
9
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 Current Filter (Active)
Adjustable
Range:
0.0 to 16.0 s
Factory
Setting:
0.2 s
Properties:
V/f and VVW
Access groups
via HMI:
01 PARAMETER GROUPS
23 V/f Control
Description:
It sets the active current filter time constant.
It is used in the Automatic Torque Boost and Slip Compensation functions. Refer to the
It sets the response time of the Slip Compensation and of the Automatic Torque Boost. Refer to the
and
.
Summary of Contents for CFW-11 Series
Page 2: ......
Page 54: ...2 4 2 General Information ...
Page 58: ...About the CFW 11 3 3 4 ...
Page 74: ...Inverter Model and Accessories Identification 5 14 6 ...
Page 86: ...Inverter Model and Accessories Identification 6 12 6 ...
Page 94: ...Available Control Types 8 2 8 ...
Page 118: ...VVW Control 10 8 10 ...
Page 182: ...Functions Common to All the Control Modes 12 26 12 ...
Page 220: ...Dynamic Braking 14 4 14 ...