4-251
Figure 4.4.92 18-00 Effect on the torque and speed
18-01: Slip compensation gain at high speed
It is not required to adjust the Slip compensation gain at high speed if the motor is loaded. After adjusting
parameter 18-00 it is recommended to increase the reference frequency and check the motor speed. In
case of a speed error increase the value of 18-01 to adjust the compensation. Increase the motor rated
frequency (01-12 base frequency) and increase the value of 18-01 to reduce the speed error. If the speed
accuracy becomes worse due to an increase in motor temperature it is recommended to use a
combination of 18-00 and 18-01 for adjustment.
Compared to 18-00, 18-01 serves as a variable gain for the full speed range. Parameter 18-01 determines
the slip compensation at the motor rated speed and is calculated follows:
[Slip compensation gain at high speed x frequency reference]
Slip compensation gain = Slip compensation gain at low speed
+
[Motor rated frequency]
Figure 4.4.93 18-00/18-01 Slip compensation gain versus frequency reference
Torque
Speed
Decrease
18-01
Decrease
18-01
Increase
18-01
Increase
18-01
Figure 4.4.94 18-01 Effect on torque speed curve
To Next Page
Loading...
