Siemens SINAMICS G120D List Manual page 166

Parameters
List of parameters
Note: For U/f control and sensorless vector control (see p1300), ramp-down times of 0 s are not recommended. The set-
ting 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
Can be changed: U, T
Units group: -
Min
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.
p1131[0...n] Ramp-function generator final rounding-off time / RFG t_end_delay
Access level: 2
Can be changed: U, T
Units group: -
Min
0.000 [s]
Description: Sets the final 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.
p1134[0...n] Ramp-function generator rounding-off type / RFG round-off type
Access level: 2
Can be changed: U, T
Units group: -
Min
0
Description: Sets the smoothed response to the OFF1 command or the reduced setpoint for the extended ramp-function gener-
ator.
Value: 0:
1:
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 com-
pleted. 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 set-
point.
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
Can be changed: C(1), U, T
Units group: -
Min
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.
1-166
Cont. smoothing
Discont smoothing
Calculated: -
Scaling: -
Unit selection: -
Max
30.000 [s]
Calculated: -
Scaling: -
Unit selection: -
Max
30.000 [s]
Calculated: -
Scaling: -
Unit selection: -
Max
1
Calculated: -
Scaling: -
Unit selection: -
Max
5400.000 [s]
© Siemens AG 2012 - 2013 All Rights Reserved
SINAMICS G120D List Manual (LH14), 01/2013
Data type: FloatingPoint32
Dyn. index: DDS, p0180
Func. diagram: 3070
Factory setting
0.000 [s]
Data type: FloatingPoint32
Dyn. index: DDS, p0180
Func. diagram: 3070
Factory setting
0.000 [s]
Data type: Integer16
Dyn. index: DDS, p0180
Func. diagram: 3070
Factory setting
0
Data type: FloatingPoint32
Dyn. index: DDS, p0180
Func. diagram: 3060, 3070
Factory setting
0.000 [s]