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).
p1134[0...n]
Ramp-function generator rounding-off type / RFG round-off type
Access level: 2
Calculated: -
Data type: Integer16
Can be changed: T, U
Scaling: -
Dynamic index: DDS, p0180
Unit group: -
Unit selection: -
Function diagram: 3070
Min:
0
Max:
1
Factory setting:
0
Description:
Sets the smoothed response to the OFF1 command or the reduced setpoint for the extended ramp-function generator.
Value:
0:
Continuous smoothing
1:
Discontinuous smoothing
Dependency:
No effect up to initial rounding-off time (p1130) > 0 s.
Note
p1134 = 0 (continuous smoothing)
If the setpoint is reduced while ramping-up, initially a final rounding-off is carried out and then the ramp-up completed.
During the final rounding-off, the output of the ramp-function generator continues to go in the direction of the previous
setpoint (overshoot). After the final rounding-off has been completed, the output goes toward the new setpoint.
p1134 = 1 (discontinuous smoothing)
If the setpoint is reduced while ramping-up, then the output goes immediately in the direction of the new setpoint. For
the setpoint change there is no rounding-off.
p1135[0...n]
OFF3 ramp-down time / OFF3 t_RD
Access level: 2
Calculated: -
Data type: FloatingPoint32
Can be changed: C2(1), T, U
Scaling: -
Dynamic index: DDS, p0180
Unit group: -
Unit selection: -
Function diagram: 3070
Min:
0.000 [s]
Max:
5400.000 [s]
Factory setting:
0.000 [s]
Description:
Sets the ramp-down time from the maximum speed down to zero speed for the OFF3 command.
Note
This time can be exceeded if the DC link voltage reaches its maximum value.
p1135[0...n]
OFF3 ramp-down time / OFF3 t_RD
G120X_DP (PM330),
G120X_PN (PM330),
G120X_USS (PM330)
Access level: 2
Calculated: -
Data type: FloatingPoint32
Can be changed: C2(1), T, U
Scaling: -
Dynamic index: DDS, p0180
Unit group: -
Unit selection: -
Function diagram: 3070
Min:
0.000 [s]
Max:
5400.000 [s]
Factory setting:
3.000 [s]
Description:
Sets the ramp-down time from the maximum speed down to zero speed for the OFF3 command.
Dependency:
The parameter is pre-assigned depending on the size of the power unit.
Note
This time can be exceeded if the DC link voltage reaches its maximum value.
Parameters
7.2 Parameter list
SINAMICS G120X converter
636
Operating Instructions, 06/2019, FW V1.01, A5E44751209B AC
