Motor Data Identification And Rotating Measurement - Siemens SINAMICS S120 Function Manual

Operating Modes
Vector control
3.2.11

Motor data identification and rotating measurement

Description
Two motor identification options, which are based on each other, are available:
S Standstill measurement with p1910 (motor identification)
S Rotating measurement with p1960 (determining the saturation characteristic)
These can be selected more easily via p1900. 1900 = 2 selects the standstill mea-
surement (motor not rotating). p1900 = 1 also activates the rotating measurement;
p1900 = 1 sets p1910 = 1 and p1960 in accordance with the current control type
(p1300).
If a permanent-magnet synchronous motor is being used (p0300 = 2), then with
p1900 > 1, the encoder adjustment (p1990 = 1) is automatically activated. The
technique used can be set in p1980 (also refer to Subsection 3.2.13).
Parameter p1960 is set depending on p1300:
S p1960 = 1, when p1300 = 20 or 22 (without encoder)
S p1960 = 2, when p1300 = 21 or 23 (with encoder)
The measurements, parameterized using p1900 are started in the following se-
quence after the drive has been enabled:
S Standstill (static) measurement – after the measurement has been completed,
the pulses are inhibited and parameter 1910 is reset to 0.
S Encoder adjustment – after the measurement has been completed, the pulses
are inhibited and parameter 1990 is reset to 0.
S Rotating measurement – after the measurement has been completed, the
pulses are inhibited and parameter 1960 is reset to 0.
S After all of the measurements, activated using p1900 have been successfully
completed, then this is set to 0.
Note
To set the new controller setting permanently, the data must be saved in a
non-volatile memory (see also "Parameters").
Danger
!
During motor identification, the drive may cause the motor to move. The
emergency OFF functions must be fully operational during commissioning. To
protect the machines and personnel, the relevant safety regulations must be
observed.
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© Siemens AG 2006 All Rights Reserved
SINAMICS S120 Function Manual, 03/2006 Edition