Danfoss VACON 100 FLOW Series User Manual

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Illustration 39: The I/f Start Parameters
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I/f Start Current
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Output Frequency
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Motor Current
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I/f Start Frequency
11.3.5.1 (ID 534) I/f Start
Location in the menu: P3.1.4.12.1
Use this parameter to enable the I/f start function.
When the I/f start function is activated, the drive starts to operate in the current control mode. A constant current is led to the motor
until the output frequency increases above the level that is set in P3.1.4.12.2. When the output frequency increases above I/f Start
Frequency level, the operation mode changes back to the normal U/f control mode.
11.3.5.2 (ID 535) I/f Start Frequency
Location in the menu: P3.1.4.12.2
Use this parameter to set the output frequency limit below which the set I/f start current is fed to motor.
When the output frequency of the drive is below the limit of this parameter, I/f start function activates. When the output frequency
is more than the limit, the drive operation mode changes back to the normal U/f control mode.
11.3.5.3 (ID 536) I/f Start Current
Location in the menu: P3.1.4.12.3
Use this parameter to set the current that is used when the I/f start function is enabled.
11.3.6 Torque Stabilator Function
11.3.6.1 (ID 1412) Torque Stabilator Gain
Location in the menu: P3.1.4.13.1
Use this parameter to set the gain of the torque stabilator in an open loop control operation.
11.3.6.2 (ID 1414) Torque Stabilator Gain at Field Weakening Point
Location in the menu: P3.1.4.13.2
Use this parameter to set the gain of the torque stabilator at field weakening point in an open loop control operation. The torque
stabilizer stabilizes the possible oscillations in the estimated torque.
Two gains are used. TorqStabGainFWP is a constant gain at all the output frequencies. TorqStabGain changes linearly between the
zero frequency and the field weakening point frequency. The full gain is at 0 Hz and the gain is zero at the field weakening point.
The figure shows the gains as a function of output frequency.
AB298035655957en-000201 / DPD01083 | 175Danfoss A/S © 2023.08
Parameter Descriptions
VACON® 100 FLOW
Application Guide

Danfoss VACON 100 FLOW Series Specifications

General

Brand	Danfoss
Model	VACON 100 FLOW Series
Category	DC Drives
Language	English