Commissioning
BA8230 151
Calibration of R-stator + R-cable is then necessary if the starting characteristics are
unsatisfactory and/or the motor cables used exceed 50 m in length.
For long, screened motor cables > 200 m it may be favourable to select a lower than
the corrected value because of the effective cable capitance.
Calibration is activated under 06 = RATINGS by selecting the parameter:
06 Adjust mode
Yes
Press the Enter key (4) and the Up key (5) to set the parameter to Yes and confirm
by pressing Enter(4). When the unit responds, press the Down (6) key to show the
following display:
06 Adjust to 0
0.10 %
The display shows the adjustment value for the magnetising current control as a
percentage. Switch the 8230 frequency inverter on using the Start key on the control
unit. The Run LED is on, the display shows positive values above 0.00 %. Record
the average value. Press the Down (6) key to select parameter R-stator + R-cable.
The display shows the stator resistance calculated with the type data, for example:
06 R-stator + R-cable
0.1484 Ω
Now increase the calculated resistance by approx. 25 %, confirm by pressing
Enter (4) and then check the adjustment value for the magnetising current control
(06 = Adjust to 0). Increase the resistance in steps until the magnetising current
adjustment value reaches a minimum which does not produce negative values.
However, as only one parameter can be displayed at any one time, you must
alternately select the parameters “Calibrate to 0” and “R-stator + R-cable".
The following applies:
Measurement or adjustment value > 0 ---> Increase R-stator + R-cable
Measurement or adjustment value < 0 ---> Reduce R-stator + R-cable
Measurement or adjustment value ca. 0 ---> End calibration
After calibration, stop the drive by pressing Stop on the control unit and reset the
calibration mode parameter to No. Otherwise the demand will remain disabled and
the drive cannot run.
This completes the basic 8230 frequency inverter parameter adjustment. Other
important parameter settings are described below.
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