User Manual V 1-4.XX User guide

Understanding the Auto-tuning Procedure 13-11
If Fdbk Device Type is set for encoderless, the parameters are set as
follows:
Total Inertia and Spd Desired BW are set as follows:
If Fdbk Device Type is set for an encoder, the parameters are set as
follows:
Total Inertia, Spd Desired BW, and Error Filtr BW are set as follows:
In many cases, the automatic selection by the drive for the bandwidth
setting provides acceptable performance and no further adjustments
are required. However, if you want a faster response to speed
reference and less speed disturbance to changes in load, increase the
bandwidth. Conversely, if you want a slower response, decrease the
bandwidth. Mid-range settings at half the maximum bandwidth value
are a good place to start when adjusting the bandwidth. The drive sets
the regulator Kp and Ki gains when the bandwidth adjustment is
made.
Important: If you set the speed regulator bandwidth too high, the
motor and load could chatter. If set too low, response will be sluggish.
This parameter: Is set to this value:
Min Flux Level (parameter 71) 25.0%
Fdbk Filter Sel (parameter 65) 1 (35/49 radians/second)
Kf Speed Loop (parameter 160) 0.7
Error Filtr BW (parameter 162) 500.0 radians/second
When Total Inertia
(parameter 157) is:
Then Spd Desired BW
(parameter 161) is set to:
inertia ≤ 0.3 seconds 15 radians/second
0.3 seconds < inertia < 2 seconds 10 radians/second
2 seconds ≤ inertia < 5 seconds 5 radians/second
5 seconds ≤ inertia < 20 seconds 1 radians/second
inertia ≥ 20 seconds 0.5 radians/second
This parameter: Is set to this value:
Min Flux Level (parameter 71) 25.0%
Fdbk Filter Sel (parameter 65) 0 (none)
Kf Speed Loop (parameter 160) 1.0
When Total Inertia
(parameter 157) is:
Spd Desired BW
(parameter 161) is set to:
And Error Filtr BW
(parameter 162) is set to:
inertia ≤ 0.3 seconds 25 radians/second 125 radians/second
0.3 seconds < inertia < 2 seconds 16 radians/second 80 radians/second
2 seconds ≤ inertia < 5 seconds 8 radians/second 40 radians/second
5 seconds ≤ inertia < 20 seconds 1.6 radians/second 25 radians/second
inertia ≥ 20 seconds 0.8 radians/second 25 radians/second