Vacon 100 Industrial Applications Manual page 199

PARAMETER DESCRIPTIONS
If you increase the switching frequency, the capacity of the AC drive reduces. To reduce
capacitive currents in the motor cable, when the cable is long, we recommend that you use a
low switching frequency. To reduce the motor noise, use a high switching frequency.
P3.1.2.4 IDENTIFICATION (ID 631)
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.
NOTE!
Before you do the identification run, you have to set the motor nameplate
parameters.
Selection
Selection name
number
0
1 Identification at standstill
2 Identification with rotation
To activate the Identification function, set the parameter P3.1.2.4 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 P3.1.2.4 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.
NOTE!
To start the drive after the identification, a new start command is necessary.
P3.1.2.5 MAGNETIZING CURRENT (ID 612)
Use this parameter to set the magnetising current of the motor.
LOCAL CONTACTS: HTTP://DRIVES.DANFOSS.COM/DANFOSS-DRIVES/LOCAL-CONTACTS/
No action No identification requested.
The drive operates without speed when you do the identifica-
tion run for the motor parameters. The motor receives cur-
rent and voltage, but the frequency is zero. The U/f ratio and
start magnetisation parameters are identified.
The drive operates with speed when you do the identification
run for the motor parameters. The U/f ratio, the magnetisa-
tion current and start magnetisation parameters are identi-
fied.
To get accurate results, do this identification run with no
load on the motor shaft.
VACON · 199
Description
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