Identifying The Motor Data And Optimizing The Closed-Loop Control - Siemens SINAMICS G120C Compact Operating Instructions

● ROT: Measure the motor data with the motor rotating.
The inverter switches off the motor after the motor data identification has been
completed.
● ST RT OP: setting same as STIL ROT.
The motor accelerates to the currently set setpoint after the motor data identification.
● STILL OP: setting same as STILL.
After the motor data identification, the motor accelerates to the currently set setpoint.
Complete quick commissioning:
● Switch over the display using an arrow key: nO → YES
● Press the OK key.
You have completed quick commissioning.
4.2.4

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.
SINAMICS G120C, FSD ... FSF inverters
Compact Operating Instructions, 11/2016, FW V4.7 SP6, A5E39339884B AA
WARNING
working area.
4.2 Commissioning with BOP-2 operator panel
Commissioning
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