6motor interface – Lenze E94AxPExxxx User Manual
Page 193
Lenze · 9400 Servo PLC· Reference manual · DMS 4.0 EN · 11/2013 · TD05/06
193
6
Motor interface
6.4
Servo control (SC)
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How to optimise the current controller in the test mode:
1. If the controller is enabled, inhibit the controller, e. g. with the device command
= "41: Inhibit controller".
2. Set a fixed switching frequency using
. Observe the above mentioned
recommendations.
3. Activate one of the two following optimisation modes for the current controller:
•
= "3: Current controller optimisation mode":
After controller enable, the motor is supplied with current as long as the controller is
enabled.
•
= "4: Current controller optimisation mode pulse":
The motor is supplied with voltage for 50 ms after controller enable. Due to this time
limit, the load of the machine is reduced. Afterwards, the controller is inhibited
automatically.
4. Select the effective value of the current setpoint step change under
• The peak value of the measurable motor current will be 1.41 times higher.
5. Enable the controller for a short time and measure the step response of the motor current
in the motor phases using the oscilloscope and clamp-on ammeters or record the field-
oriented direct-axis current using the
function in »Engineer«.
• Variable of the motor control to be recorded:
Current.dnActualDirectCurrent (field-oriented direct-axis current)