User`s manual

142 • Vacon apfiff09 marine
Tel. +358
6
7.6.3.3 Torque follower function
Torque follower function will keep the internal torque limit near the actual torque so that when the
torque demand increases, the increase rate is controlled by the torque limit increase rate
parameter. This function can be used together with the power limit ramp rate function because a
low power limit at low speed will give high torque and may cause mechanical stress in the system.
P2.6.3.6 Torque Follower ID1706
Activates the torque follower function and ramp rate limiter function for torque limit.
P2.6.3.7 Torque limit increase rate ID1502
Defines the torque limit increase rate. Decreasing power limit will be in effect
immediately.
P2.6.3.8 Torque limit follower hysteresis ID1533
Defines the hysteresis of the actual torque where the internal torque limit is kept while
the input torque limit is higher than the actual torque.
Input Torque
Limit
Torque limit
80 %
Internal
Torque Limit
Hysteresis
Actual
Torque