Siemens SINAMICS G120XA, Operating Instructions Manual, Page: 485 / 918

Note
For U/f control and sensorless vector control (see p1300), a ramp-down time of 0 s does not make sense. The setting
should be based on the startup times (r0345) of the motor.
p1127[0...n] Ramp-function generator minimum ramp-down time / RFG t_RD min
Access level: 3 Calculated: CALC_MOD_ALL Data type: FloatingPoint32
Can be changed: T, U Scaling: - Dynamic index: DDS, p0180
Unit group: - Unit selection: - Function diagram: -
Min:
0.000 [s] Max:
999999.000 [s] Factory setting:
0.000 [s]
Description: Sets the minimum ramp-down time.
The ramp-down time (p1121) is limited internally to this minimum value.
The parameter cannot be set shorter than the minimum ramp-up time (p1123).
Dependency: See also: p1082
Note
For U/f control and sensorless vector control (see p1300), a ramp-down time of 0 s does not make sense. The setting
should be based on the startup times (r0345) of the motor.
If the maximum speed p1082 changes, p1127 is re-calculated.
p1130[0...n] Ramp-function generator initial rounding-off time / RFG t_start_round
Access level: 2 Calculated: - Data type: FloatingPoint32
Can be changed: T, U Scaling: - Dynamic index: DDS, p0180
Unit group: - Unit selection: - Function diagram: 3070
Min:
0.000 [s] Max:
30.000 [s] Factory setting:
0.000 [s]
Description: Sets the initial rounding-off time for the extended ramp generator. The value applies to ramp-up and ramp-down.
Note
Rounding-off times avoid an abrupt response and prevent damage to the mechanical system.
Rounding off is not active if the technology controller is used as main speed setpoint (p2251 = 0).
p1130[0...n] Ramp-function generator initial rounding-off time / RFG t_start_round
CUG120XA_USS
(PM330)
Access level: 2 Calculated: - Data type: FloatingPoint32
Can be changed: T, U Scaling: - Dynamic index: DDS, p0180
Unit group: - Unit selection: - Function diagram: 3070
Min:
0.000 [s] Max:
30.000 [s] Factory setting:
2.000 [s]
Description: Sets the initial rounding-off time for the extended ramp generator. The value applies to ramp-up and ramp-down.
Note
Rounding-off times avoid an abrupt response and prevent damage to the mechanical system.
Rounding off is not active if the technology controller is used as main speed setpoint (p2251 = 0).
p1131[0...n] Ramp-function generator final rounding-off time / RFG t_end_delay
Access level: 2 Calculated: - Data type: FloatingPoint32
Can be changed: T, U Scaling: - Dynamic index: DDS, p0180
Unit group: - Unit selection: - Function diagram: 3070
Min:
0.000 [s] Max:
30.000 [s] Factory setting:
0.000 [s]
Description: Sets the final rounding-off time for the extended ramp generator.
The value applies to ramp-up and ramp-down.
Parameters
7.3 Parameters
SINAMICS G120XA converter
Operating Instructions, 03/2019, FW V1.0, A5E44751205B AB
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