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2 Parameters
2.2 List of parameters
SINAMICS G120C
168 List Manual (LH13), 04/2014, A5E33840768B AA
Description: Sets the motor data identification and speed controller optimization.
The motor identification should first be performed with the motor stationary (p1900 = 1, 2; also refer to p1910). Based
on this, additional motor and control parameters can be determined using the motor data identification with the motor
rotating (p1900 = 1, 3; also refer to p1960; not for p1300 < 20).
p1900 = 0:
Function inhibited.
p1900 = 1:
Sets p1910 = 1 and p1960 = 0, 1 depending on p1300
When the drive enable signals are present, a motor data identification routine is carried out at standstill with the next
power-on command. Current flows through the motor which means that it can align itself by up to a quarter of a
revolution.
With the following power-on command, a rotating motor data identification routine is carried out - and in addition, a
speed controller optimization by making measurements at different motor speeds.
p1900 = 2:
Sets p1910 = 1 and p1960 = 0
When the drive enable signals are present, a motor data identification routine is carried out at standstill with the next
power-on command. Current flows through the motor which means that it can align itself by up to a quarter of a
revolution.
p1900 = 3:
Sets p1960 = 0, 1 depending on p1300
This setting should only be selected if the motor data identification was already carried out at standstill.
When the drive enable signals are present, with the next power-on command, a rotating motor data identification
routine is carried out - and in addition, speed controller optimization by taking measurements at different motor
speeds.
Value: 0: Inhibited
1: Identifying motor data and optimizing speed control
2: Identifying motor data (at standstill)
3: Optimizing speed control (in the rotating mode)
Dependency: Refer to: p1300, p1910, p1960
Notice: p1900 = 3:
This setting should only be selected if the motor data identification was already carried out at standstill.
If there is a motor holding brake, it must be open (p1215 = 2).
To permanently accept the determined settings they must be saved in a non-volatile fashion (p0971).
During the rotating measurement it is not possible to save the parameter (p0971).
For p0014 = 1, the following applies:
After the value has been modified, no further parameter modifications can be made and the status is shown in r3996.
Modifications can be made again when r3996 = 0.
Note: The motor and control parameters of the vector control are only optimally set when both measurements are carried
out (initially at standstill, and then with the motor rotating). The measurement with rotating motor is not performed for
p1300 < 20 (U/f controls).
An appropriate alarm is output when the parameter is set.
The power-on command must remain set during a measurement and after the measurement has been completed,
the drive automatically resets it.
The duration of the measurements can lie between 0.3 s and several minutes. This time is, for example, influenced
by the motor size and the mechanical conditions.
p1900 is automatically set to 0 after the motor data identification routine has been completed.
13 Alarm status bit 0 ON OFF -
14 Alarm status bit 1 ON OFF -
15 Diagnostics 24 V ON OFF -
p1900 Motor data identification and rotating measurement / MotID and rot meas
Access level: 2 Calculated: - Data type: Integer16
Can be changed: C(1), T Scaling: - Dyn. index: -
Units group: - Unit selection: - Func. diagram: -
Min Max Factory setting
0 3 0
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