Identifying The Motor Data And Optimizing The Closed-Loop Control - Siemens SINAMICS G120P CU230P-2 Compact Operating Instructions

Commissioning
4.2 Commissioning with BOP-2 operator panel
● STILL: Measure the motor data at standstill. The inverter switches off the motor after the
motor data identification has been completed.
Select this setting if one of the following cases is applicable:
– You have selected the control mode "SPD N EN". However, the motor cannot rotate
– You have selected U/f control as control mode, e.g. "VF LIN" or "VF QUAD".
● ROT: Measure the motor data with the motor rotating. The inverter switches off the motor
after the motor data identification has been completed.
Complete quick commissioning:
Switchover the display using an arrow key: nO → YES
Press the OK key.
You have completed quick commissioning.
4.2.2

Identifying the motor data and optimizing the closed-loop control

The inverter has several techniques to automatically identify the motor data and optimize the
speed control.
To start the motor data identification routine, you must switch-on the motor via the terminal
strip, fieldbus or from the operator panel.
Risk of death due to machine motion while motor data identification is active
For the stationary measurement, the motor can make several rotations. The rotating
measurement accelerates the motor up to its rated speed. Secure dangerous machine
parts before starting motor data identification:
• Before switching on, ensure that nobody is working on the machine or located within its
• Secure the machine's work area against unintended access.
• Lower hanging/suspended loads to the floor.
Preconditions
● You selected a method of motor data identification during quick commissioning, e.g.
measuring motor data while the motor is stationary.
When quick commissioning is complete, the inverter issues alarm A07991.
● The motor has cooled down to the ambient temperature.
An excessively high motor temperature falsifies the motor data identification results.
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freely – for example, if the traversing range is mechanically limited.
WARNING
working area.
Compact Operating Instructions, 01/2017, A5E38815802B AA
CU230P-2 Control Units