Siemens G130 List Manual page 627

Notice: If the changeover point defined using p3844 does not match the changeover speed p1752, then internally, the model-
controlled friction torque input is automatically deactivated (same as for p3844 = 0).
Note: For p3844 = 0, the model-controlled frictional torque changeover is deactivated. The frictional torque is then
calculated the same as for the encoderless control by interpolating between the points along the friction
characteristic.
p3845 Friction characteristic record activation / Frict rec act
VECTOR_G Can be changed: T
Data type: Integer16
P-Group: Functions
Not for motor type: REL
Min
0
Description: Setting for the friction characteristic record.
After the next switch-on command, the friction characteristic is automatically recorded.
Value: 0:
1:
2:
3:
Dependency: When selecting the friction characteristic measurement, the drive data set changeover is suppressed.
For linear drives (refer to r0108 bit 12) it is not permissible to carry out the friction characteristic measurement for
mechanical systems that limit travel.
Danger: For drives with a mechanical system that limit the distance moved, it must be ensured that during recording, the
friction characteristic is not reached. If this is not the case, then it is not permissible that the measurement is carried
out.
Notice: To permanently accept the determined settings they must be saved in a non-volatile fashion (p0971, p0977).
Note: When the friction characteristic record is active, it is not possible to save the parameters (p0971, p0977).
When the friction characteristic record is active (p3845 > 0), it is not possible to change p3820 ... p3829, p3830 ...
p3839 and p3842.
When recording the friction characteristic, in addition to the friction, the motor losses are also determined (e.g. iron
losses, eddy current losses and re-magnetizing losses). A differentiation is not made between these individual loss
components. We recommend that a motor temperature sensor is used because torque deviations can also be
emulated/mapped on the characteristic due to the thermal influence.
p3846[0...n] Friction characteristic record ramp-up/ramp-down time / Frict rec t_RU/RD
VECTOR_G (n/M) Can be changed: T
Data type: FloatingPoint32
P-Group: Functions
Not for motor type: REL
Min
0.000 [s]
Description: Sets the ramp-up/ramp-down time of the ramp-up/ramp-down function generator to automatically record the friction
characteristic.
The drive is accelerated from standstill (setpoint = 0) up to the maximum speed/velocity (p1082) in this time.
Dependency: Refer to: p3845
p3847[0...n] Friction characteristic record warm-up time / Frict rec t_warm
VECTOR_G (n/M) Can be changed: T
Data type: FloatingPoint32
P-Group: Functions
Not for motor type: REL
Min
0.000 [s]
Description: Sets the warm-up time.
For an automatic trace (record) to start, the highest selected speed (p3829) is approached and this time is held. After
this, the measurement is started with the highest speed.
SINAMICS G130/G150
List Manual (LH2), 07/2016, A5E03263479A
Friction characteristic record deactivated
Friction char record activated for all directions
Friction char record activated for positive direction
Friction char record activated for negative direction
Calculated: -
Dyn. index: -
Unit group: -
Scaling: -
Max
3
Calculated: -
Dyn. index: DDS, p0180
Unit group: -
Scaling: -
Max
999999.000 [s]
Calculated: -
Dyn. index: DDS, p0180
Unit group: -
Scaling: -
Max
3600.000 [s]
2 Parameters
2.2 List of parameters
Access level: 2
Func. diagram: 7010
Unit selection: -
Expert list: 1
Factory setting
0
Access level: 2
Func. diagram: 7010
Unit selection: -
Expert list: 1
Factory setting
10.000 [s]
Access level: 2
Func. diagram: 7010
Unit selection: -
Expert list: 1
Factory setting
0.000 [s]
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