Motor Limits; Open Loop Parameters - Danfoss VACON 100 FLOW Series Application Manual

VACON® 100 FLOW
Application Guide
11.3.2.10 (ID 662) Stator Resistance Voltage Drop
Location in the menu: P3.1.2.15
Use this parameter to set the motor stator phase-resistance value (in star-connection equivalent circuit). The resistance is essential
for an accurate motor control.
The value is given as a percentage of voltage drop at nominal current.
The identification run sets a value for this parameter automatically. We recommend the identification run, if it is possible. Make
the identification run with the parameter P3.1.2.4.
11.3.2.11 (ID 673) Stator Inductance Voltage Drop
Location in the menu: P3.1.2.16
Use this parameter to set the motor stator phase-inductance value (in star-connection equivalent circuit). The value is the transient
inductance (for induction motors) or the line-to-neutral inductance (for permanent magnet and reluctance motors).
The value is given as a percentage of voltage drop at nominal current and nominal frequency.
The identification run sets a value for this parameter automatically. We recommend the identification run, if it is possible. Make
the identification run with the parameter P3.1.2.4.
11.3.2.12 (ID 674) Motor BEM Voltage
Location in the menu: P3.1.2.17
Use this parameter to set the back electromotive force (back EMF) voltage of a permanent magnet motor. The value of this parame-
ter is the motor terminal voltage when the motor current is zero.
The value is given as line-to-line RMS voltage at nominal operating frequency. Identification at standstill uses this parameter to set
U/f curve in open loop control mode. The back EMF value that is identified in Identification with rotation overwrites the existing
parameter value.

11.3.3 Motor Limits

11.3.3.1 (ID 107) Motor Current Limit
Location in the menu: P3.1.3.1
Use this parameter to set the maximum motor current from the AC drive. The range of values for the parameter is different for each
enclosure size of the drive.
When the current limit is active, the drive output frequency decreases.
The Motor Current Limit is not an overcurrent trip limit.
11.3.3.2 (ID 1287) Motor Torque Limit
Location in the menu: P3.1.3.2
Use this parameter to set the maximum torque limit of the motoring side.
The range of values for the parameter is different for each enclosure size of the drive.

11.3.4 Open Loop Parameters

11.3.4.1 (ID 108) U/F Ratio
Location in the menu: P3.1.4.1
Use this parameter to set the type of the U/f curve between zero frequency and the field weakening point.
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Parameter Descriptions
AB298035655957en-000201 / DPD01083 | 171