Lenze EDB9300UES - Manual (Page 131)

Operation and Software
126 BA8230
Number of lines
This parameter is used to set the number of lines (teeth) for the encoder used. It is
only effective in the control structures “Speed control with encoder” and “Torque
control with encoder”. See also encoder interface in section 2.5.6.1 and notes on
encoder connection in section 3.5.
Adjustment range: 0 ... 10000
As supplied 1000
Calibration mode
With this parameter (protection level 2) you can change from one structure to another
to simplify calibration of the motor stator resistance "R-stator + R-cable”. This
calibration is not required for drives with low dynamic requirements.
Select list: - Yes
- No
As supplied: No
Calibration:
If Calibration mode = Yes, the ramp speed controller and the II controller are disabled.
The adjustment value of the Im control which serves as a criterion for calibration is
output in the parameter “Calibrate to zero” (measurement point, zero calibration). The
parameter “R-stator + R-cable” is adjusted analog to the output variable of the Im
control until the adjustment value displayed is approx 0 (positive adjustment value
→
increase, or negative adjustment value
→
reduction in “R-stator + R-cable”. If there
should be problems on starting with the setting found in this way, the resistance is to
be reduced by approx. 20 %. A more accurate but more time-consuming method of
calibration is to determine the inverter voltage and the inverter current (according to
the software display) by taking two measurements, whereby both pairs of values
should differ by approx. 30 % due to the change in “R-stator + R-cable”. The
resistance according to Ohm’s law is calculated from the differential voltage and the
difference in the currents measured:
"R-stator + R-cable" = 0.5774 * (U1-U2) / (I1-I2)
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