Danfoss VACON 3000 Application Manual page 191

VACON® 3000
Application Guide
7.126 (ID 631) Identification
Location in the menu:
• INU application: P3.1.2.8.1
Use this parameter to find the parameter values that are optimal for the operation of the drive.
The identification run calculates or measures the motor parameters that are necessary for a good control of the motor and speed.
The identification run helps you to adjust the motor-specific and the drive-specific parameters. It is a tool for the commissioning
and the servicing of the drive.
Before you do the identification run, you have to set the motor nameplate parameters.
Selection Selection name
number
0 No action
1 Identification at
standstill
2 Identification with
rotation
To activate the Identification function, set the parameter ID 631 and give a start command. You have to give the start command in
20 s. If there is no start command in that time, the identification run does not start. The parameter ID 631 is reset to the default value
and an identification alarm shows.
To stop the identification run before it is completed, give a stop command. This resets the parameter to the default value. If the
identification run is not completed, an identification alarm shows.
To start the drive after the identification, a new start command is necessary.
7.127 (ID 636) Open Loop Torque Control Minimum Frequency
Location in the menu:
• INU application: P3.3.2.14.1
Use this parameter to set the output frequency limit below which the drive operates in the frequency control mode.
7.128 (ID 639) Open Loop Torque Control P Gain
Location in the menu:
•
INU application: P3.3.2.14.2
Use this parameter to set the P gain for the torque controller in the open loop control mode.
The P Gain value 1.0 causes a 1 Hz change in the output frequency when the torque error is 1% of the motor nominal torque.
7.129 (ID 640) Open Loop Torque Control I Gain
Location in the menu:
•
INU application: P3.3.2.14.3
Use this parameter to set the I gain for the torque controller in the open loop control mode.
The I Gain value 1.0 causes the integration to reach 1.0 Hz in 1 second when the torque error is 1% of the motor nominal torque.
7.130 (ID 641) Torque Reference Selection
Location in the menu:
•
INU application: P3.3.2.1
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N O T I C E
Description
No identification requested.
The drive operates without speed when you do the identification run for the motor parame-
ters. The motor receives current and voltage, but the frequency is zero. The U/f ratio and start
magnetization parameters are identified.
The drive operates with speed when you do the identification run for the motor parameters.
The U/f ratio, the magnetization current and start magnetization parameters are identified.
To get accurate results, do this identification run with no load on the motor shaft.
N O T I C E
Parameter descriptions
AB319735759636en-000101 / DPD01822 | 191