
apfiff09 marine
VACON®
•
103
Local contacts: http://drives.danfoss.com/danfoss-drives/local-contacts/
Classified as Public
P2.1.10
Identification
ID631
“Identification”
Identification Run is a part of tuning the motor and the drive specific parameters. It is a
tool for commissioning and service of the drive with the aim to find as good parameter
values as possible for most drives. The automatic motor identification calculates or
measures the motor parameters that are needed for optimum motor and speed control.
NOTE
: Set the motor control mode to Frequency Control before identification!
NOTE:
During identification, the drive will not open mechanical brake for safety reasons.
If the used identification needs shaft to rotate freely, the mechanical brake needs to be
opened externally.
NOTE:
During the identification run, the torque and power limits should be above 100%.
Also the current limit should be above motor nominal current.
NOTE:
During the identification run, the acceleration time should be below 20 second.
NOTE:
If switching frequency is changed after the identification, it is recommended to do
the identification run again.
NOTE:
A small motor with long motor cables may require a reduction of switching
frequency if identification is not successful.
The basic motor name plate data must be set correctly before performing the identifi-
cation run:
-
P2.1.3
–
P2.1.8. Motor basic data.
-
P2.1.9 Magnetization current can also be given if available if given before the
identification without rotating motor; U/f curve will be tuned according to given
magnetization current.
-
P2.1.11 Motor Type.
When in closed loop and with an encoder installed, also the parameter for pulses /
revolutions (in Menu M7) have to be set.
The automatic identification is activated by setting this parameter to the appropriate
value followed by a start command in the requested direction. The start command to the
drive has to be given within 20 s. If no start command is given within 20 s the identifi-
cation run is cancelled and the parameter will be reset to its default setting. The iden-
tification run can be stopped any time with normal stop command and the parameter is
reset to its default setting. In case identification run detects fault or other problems, the
identification run is completed if possible. After the identification is finished, warning will
be given if not all requested identification types have been completed successfully.
During Identification Run, the brake control is disabled.
Note
: After the identification is made, the drive requires rising edge of start command.
Note
: Marine application has all identified values stored to the parameters. There is no
need to redo identification if previous parameters are loaded back to the drive, for
example, in case the control board is changed.
DriveSynch operation:
Activate identification only from the master drive:
0 =
“No Action”
No action
No identification requested.
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