Current Limitation Setpoint Integrator Ramp-Up Time; Auto-Reversing Stage Changeover Threshold / Auto-Rev Thresh; Auto-Reversing Stage Additional Torque-Free Interval; Auto-Reversing Stage Alpha W Pulses Second Pulse Inhibited - Siemens SINAMICS DCM List Manual

2 Parameters
2.2 List of parameters
p50158[0...n] Current limitation setpoint integrator ramp-up time / Set integ t_r-up
DC_CTRL Can be changed: U, T
Data type: FloatingPoint32
P-Group: -
Not for motor type: -
Min
0.000 [s]
Description: Sets the ramp-up time for the setpoint integrator during current limitation.
Duration of a ramp-up in the event of a setpoint jump from 0 to 100% of parameter r50072[1].
Notice: When setting a ramp-up time > 0.000 s, it is not permissible to enter a supplementary current setpoint via p50601[5].
p50601[5] must be set = 0.
Possible effect if this is not observed:
Torque direction change will not be able to be completed. The drive remains in one torque direction.
p50159[0...n]

Auto-reversing stage changeover threshold / Auto-rev thresh

DC_CTRL Can be changed: U, T
Data type: FloatingPoint32
P-Group: -
Not for motor type: -
Min
0.00 [%]
Description: Sets the changeover threshold for the torque direction in the auto-reversing stage.
p50160[0...n] Auto-reversing stage additional torque-free interval / Auto-rev interval
DC_CTRL Can be changed: U, T
Data type: FloatingPoint32
P-Group: -
Not for motor type: -
Min
0.000 [s]
Description: Sets the additional torque-free interval when switching over the torque direction in the auto-reversing stage.
p50161[0...n] Auto-reversing stage Alpha W pulses second pulse inhibited / Auto-rev Alpha W1
DC_CTRL Can be changed: U, T
Data type: Unsigned16
P-Group: -
Not for motor type: -
Min
0
Description: Sets the additional Alpha W pulses with inhibited second pulse in the auto-reversing stage.
Recommendation: This parameter should be set to values > 0 in particular when supplying high inductances (e.g. infeed of solenoids).
Dependency: Refer to: p50179
Note: Number of additional Alpha W pulses with disabled second pulse following detection of I = 0 signal prior to a change
in torque direction.
These pulses cause the current to decay prior to a change in torque direction.
When it drops below the thyristor holding current value, the current is suddenly chopped by the unfired second
thyristor and the residual energy stored in the load inductance must be dissipated via a protective circuit (e.g. a
varistor) to prevent the load inductance from producing an overvoltage.
412
Calculated: -
Dyn. index: DDS, p0180
Unit group: -
Scaling: -
Max
1.000 [s]
Calculated: -
Dyn. index: DDS, p0180
Unit group: -
Scaling: PERCENT
Max
100.00 [%]
Calculated: -
Dyn. index: DDS, p0180
Unit group: -
Scaling: -
Max
2.000 [s]
Calculated: -
Dyn. index: DDS, p0180
Unit group: -
Scaling: -
Max
50000
List Manual (LH8), 02/2015, 6RX1800-0ED76
Access level: 2
Func. diagram: 6845
Unit selection: -
Expert list: 1
Factory setting
0.000 [s]
Access level: 2
Func. diagram: 6860
Unit selection: -
Expert list: 1
Factory setting
0.01 [%]
Access level: 2
Func. diagram: 6860
Unit selection: -
Expert list: 1
Factory setting
0.000 [s]
Access level: 2
Func. diagram: 6860
Unit selection: -
Expert list: 1
Factory setting
0
SINAMICS DCM