Lenze · i700 servo inverter · reference manual · DMS 3.0 EN · 06/2016 · TD06 76
5 Motor control & motor settings
5.7 Compensating for inverter influence on output voltage
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Preconditions for the execution
• The motor may be firmly braked.
• The servo inverter is free of errors and is in the "Switched on
" device status.
Response of the motor during the execution
If the motor is not firmly braked, it will move slightly.
How to determine the inverter characteristic:
1. If the servo inverter is enabled, inhibit the servo inverter.
Enable/inhibit operation via control word
( 52)
2. Set object 0x2825
(or 0x3025 for axis B) to "8" to change to the "Inverter characteristic:
Identification" operating mode.
3. Enable the servo inverter to start the procedure.
Note: By means of controller inhibit, the started procedure can be cancelled any time.
Characteristic values that have already been determined are rejected in this case.
After successful completion...
...the controller will be inhibited automatically and the points of the determined inverter
characteristic will be set in object 0x2947
(or 0x3147 for axis B).
• For permanent storage, the changed settings must be uploaded to the controller from the i700
servo inverter.
The »EASY Starter« serves to save the parameter settings of the i700 servo inverter as parameter
file (*.gdc). In the »PLC Designer«, this file can then be imported in the corresponding axis.
Saving changed parameters safe against mains failure
( 53)
• The inverter characteristic must only be detected again if the servo inverter, motor, or motor
cable has changed, for instance due to an replacement.
• The controller inhibit automatically set by the procedure can be deactivated via the
Controlword (0x6040
or 0x6840 for axis B) (setting = 7, 15).
In the event of an error
If an error occurs during the procedure or the pulse inhibit gets active (e.g. due to short-time
undervoltage), the procedure is terminated with controller inhibit without a change in settings.
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