Lenze EDB9300UES - Manual (Page 114)

Operation and Software
BA8230 109
Invert terminal 21/22
This parameter allows inversion of the signal output at terminal X15:21/:22 (error).
This parameter is accessible from protection level 1.
Selection list: - Yes
- No
As supplied: No
Capture mode
In speed controlled operation and with frequency control the Capture facility allows
the 8230 frequency inverter to be switched to a de-excited drive while the drive is
running.
This parameter is accessible on level 2.
After a brief pause to ensure the motor is de-excited the search process begins at the
capture start frequency - adjustable with the Capture Start Frequency parameter. The
motor is magnetised to a flux demand of 20 % - variable with the parameter Capture
Im-red (100 % = rated flux). During the search the output frequency is reduced to 0
Hz. If the search is not successful it is repeated in the opposite direction.
When the synchronous frequency is detected the motor is magnetised to rated flux
and the controllers are enabled. The drive is controlled at the currently active speed
demand.
In drives with an encoder the capture process is executed without searching for the
actual speed, since the speed and direction are already known.
Conditions for almost totally smooth switching to a drive while running:
- Single drive
- Motor not excited
- No additional torque demands active during capture
The capture mode parameter must be set to YES to activate the mode.
Selection list: - Yes
- No
As supplied: No
Drive dirctions
Using this parameter you can select whether the controller is to search in one or two
drive directions during the flying restart mode.
Selection list:
- One
- Two
As supplied: One
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