speed controller active
speed controller active
P Max Freq Reference
P -Max Freq Reference
Time
Drive in Torque Control
Drive in Torque Control
Output Frequency
[Hz]
P Pos Freq Ref Limit
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.
speed controller active
speed controller active
Ramp Generator output
P Pos Freq Ref Limit
P Neg Freq Ref Limit
R Frequency reference
R -Frequency Reference
Output Frequency
Drive in Torque Control
Drive in Torque Control
Time
[Hz]
Fig. 36: Torque control frequency limit, selection 1
9.3.3 PRESET FREQUENCIES
You can use the Preset frequencies function in processes where more than 1 fixed frequency
reference is necessary. There are 8 preset frequency references available. You can make the
selection of a preset frequency reference with the digital input signals P3.3.3.10, P3.3.3.11,
and P3.3.3.12.
P3.3.3.1 PRESET FREQUENCY MODE (ID 182)
With this parameter, you can set the logic which one of the preset frequencies is selected
into use. There is a selection of 2 different logics.
PARAMETER DESCRIPTIONS VACON · 243
24-HOUR SUPPORT +358 (0)201 212 575 · EMAIL: VACON@VACON.COM
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