HEIDENHAIN iTNC 530 Technical Manual page 475

February 2002
Synchronous motor:
Asynchronous motor:
The values for XH (magnetizing reactance), F-N (rated frequency), XStr1
(stator leakage reactance) and XStr2 (rotor leakage reactance) can be found
in the motor table. Switch to the editing mode of the motor table (APPEND
MOTOR soft key).
The values for XH, XStr1 and XStr2 are specified in [mΩ] in the motor table.
Use these values in the formulas. The formula already contains the
conversion factor.
Set this P factor (MP2420.x) with the ↑ soft key.
7
7 Press the START STEP soft key.
This sends a step function to the current controller and measures the step
response. The height and length of the step function are automatically
calculated by the iTNC.
With the ↑ soft key, increase the P factor (MP2420.x) step by step until just
7
barely no undershoot is visible.
MP2420.x too small
Commissioning
XH
= --------------------------------------- -
L
⋅ ⋅ ( ) ⋅
2 π
F-N 1000
+
XStr1 XStr2
= --------------------------------------- -
L
⋅ ⋅ ( ) ⋅
2 π
F-N 1000
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