Optimising the operating behaviour
Slip compensation
10
Function library
10.4
10.4.1
L
10.4-1
EDS82EV903-1.0-11/2002
10.4 Optimising the operating behaviour
10.4.1 Slip compensation
Under load, the speed of an asynchronous machine is reduced. This load
dependent speed drop is called slip. The slip can be partly compensated by
setting C0021 accordingly. The slip compensation is effective for all control
modes (C0014).
Codes for parameter setting
Code Possible settings IMPORTANT
No. Name Lenze Selection
C0021 Slip compensation 0.0 -50.0 {0.1 %} 50.0 C0021 is calculated a nd stored under
C0148 when the motor parameters are
identified
^ 10.4-1
The slip compensation is calculated during the motor parameter identification
and entered under C0021.
You must enter the motor data of the motor nameplate:
l Rated motor speed (C0087)
l Rated motor current (C0088)
l Rated motor frequency (C0089)
l Rated motor voltage (C0090)
l Motor cos Ï• (C0091)
Carry out the motor parameter identification. (
^ 10.9-1 )
V/f-rated frequency (C0015), slip compensation (C0021) and motor stator
inductivity (C0092)are calculated and saved. The total resistance of motor cable
and motor is measured and saved as motor stator resistance (C0084).
Description
Automatic adjustment
Preparing motor parameter
identification
Motor parameter identification
Automatically detected
parameters
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