26 calculate current controller parameters, 5drive interface – Lenze E94AxPExxxx User Manual
Page 121
Lenze · 9400 Servo PLC· Reference manual · DMS 4.0 EN · 11/2013 · TD05/06
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5
Drive interface
5.2
Device commands
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
5.2.26
Calculate current controller parameters
The device command
= "77: Calculate current controller parameters" is used to calculate
the gain and the reset time of the current controller for a third-party motor.
Precondition: The two motor parameters "stator resistance" (
) and "stator leakage
inductance" (
) either have been parameterised manually on the basis of the manufacturer
information before, or have been determined automatically via the device command "
• The calculation is carried out according to the following formulas:
• After the device command has been executed successfully (see status in
), the two
and
. They serve as starting values for a subsequent
optimisation of the current controller in the test mode.
• In the event of an error, codes
are not altered.
Tip!
Detailed information on the optimisation of the current controller in the test mode can be
found in the chapter "Motor interface" in the subchapter for the respective motor control:
• Servo control (SC)
• Sensorless vector control (SLVC)
Note!
For a Lenze motor the calculation and the subsequent optimisation of the current
controller parameters is not required, as the correct current controller parameters are
accepted from »Engineer« motor catalogue.
The device command is no identification procedure for determining the current
controller parameters!
Gain
Stator leakage inductance
340 μs
-------------------------------------------------------------------
=
Reset time
Stator leakage inductance
Stator resistance
-------------------------------------------------------------------
=