Vacon 100 Industrial Applications Manual page 225

PARAMETER DESCRIPTIONS
You can also make the selection of 2 other modes with this parameter.
Selection 0 = Pos/Neg Freq Limits, that is, the positive/negative frequency limits.
The frequency is limited between Positive Frequency Reference Limit (P3.3.1.3) and Negative
Frequency Reference Limit (P3.3.1.4) (if these parameters are set lower than the value of
P3.3.1.2 Maximum Frequency).
P Pos Freq Ref Limit
P Max Freq Reference
P -Max Freq Reference
P Neg Freq Ref Limit
Fig. 35: Torque control frequency limit, selection 0
Selection 1 = Freq Reference, that is, the frequency reference for both directions.
The frequency is limited by the actual frequency reference (after the ramp generator) for
both directions. That is, the output frequency increases within the set ramp time until the
actual torque is equal to the referenced torque.
P Pos Freq Ref Limit
R Frequency reference
Ramp Generator output
R -Frequency Reference
P Neg Freq Ref Limit
Fig. 36: Torque control frequency limit, selection 1
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Output Frequency
[Hz]
Drive in Torque Control
Drive in Torque Control
Output Frequency
[Hz]
Drive in Torque Control
Drive in Torque Control
speed controller active
speed controller active
speed controller active
speed controller active
VACON · 225
Time
Time
10