WEG CFW-11 Series, Руководство по программированию

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Scalar Control (V/f)
9-4
9
Speed
Total Reference
(Refer to Figure 9.1 on page 9-1 )
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
Figure 9.3 on page 9-3 .
It sets the response time of the Slip Compensation and of the Automatic Torque Boost. Refer to the Figure 9.3 on
page 9-3 and Figure 9.5 on page 9-4 .