Siemens SINAMICS G120 Compacte gebruiksaanwijzing - Pagina 25

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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

● In the basic commissioning, you have selected a motor data identification method, e.g.

measuring the motor data at standstill

After basic commissioning has been completed, the inverter outputs alarm A07991.

● The motor has cooled down to the ambient temperature.

An excessively high motor temperature falsifies the motor data identification results.

Procedure when using the BOP-2 operator panel

To start the motor data identification, proceed as follows:

CU240B-2 and CU240E-2 Control Units

Compact Operating Instructions, 04/2015, A5E35792002B AA

WARNING

working area.

This is symbol in the BOP-2 indicates an active alarm.

⇒

Press the HAND/AUTO key. The BOP-2 displays the symbol for man-

ual operation.

Switch on the motor.

The motor data identification takes several seconds.

Wait until the inverter switches off the motor after motor data identifi-

cation has been completed.

If you have also selected a rotating measurement in addition to the

motor data identification, then the inverter again issues the alarm

A07991.

4.2 Commissioning with BOP-2 operator panel

Commissioning