Shortened Rotating Measurement - Siemens SINAMICS G130 Operating Instructions Manual

Functions, monitoring, and protective functions
9.2 Drive functions
Danger to life if the motor unexpectedly moves during motor identification in the rotating
mode
When selecting motor identification with optimization in the rotating mode, after
commissioning, the drive initiates that the motor rotates with speeds that can reach the
maximum motor speed.
• Observe the general safety instructions.
• Ensure that the EMERGENCY STOP functions are fully functional when commissioning
Note
Speed controller optimization for operation with encoder
If speed controller optimization is carried out for operation with an encoder, the control mode
will be temporarily changed over to encoderless speed control automatically, in order to be
able to carry out the encoder test.
9.2.1.3

Shortened rotating measurement

A normal rotating measurement cannot always be performed when the load is connected.
When switching on the motor for the first time, a moment of inertia measurement and the
measurement of the magnetization current and the saturation characteristic can be
performed with a simplified measuring procedure. There are two methods for this shortened
rotating measurement:
● Measurement shortened (p1959.12 = 1)
● After measurement: Direct transfer to operation (p1959.13 = 1)
During the shortened rotating measurement, the drive is not moved up to the rated speed but
up to the value set in p1965 (factory setting 40%). Parameter p1961 can be adjusted at the
plant, but it must be high enough to ensure that the machine has left open-loop controlled
operation. The machine should be operated in no-load operation (torque < 30% of M
far as is possible.
During the shortened rotating measurement the saving of parameters is disabled, because
parameter adjustments are automatically made for the measurement, which are to be
reassigned after the measurement.
Shortened measurement (p1959.12 = 1)
If p1959.12 = 1 is set, a shortened rotating measurement is carried out. In this case, the
magnetizing current and moment of inertia are determined with a somewhat lower degree of
accuracy; the vibration test is no longer required.
After the end of the measurement, the drive is moved to standstill and all the parameters
modified for performing the measurement are set to their original values.
382
WARNING
the drive.
Inverter chassis units
Operating Instructions, 07/2016, A5E00331449A
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rated