Ramp-Function Generator Ramp-Down Time / Rfg Ramp-Down Time; Bi: Bypass Ramp-Function Generator / Bypass Rfg; Ramp-Function Generator Initial Rounding-Off Time / Rfg T_Start_Round; Ramp-Function Generator Final Rounding-Off Time / Rfg T_End_Delay - Siemens SINAMICS G150 Manual

2 Parameters
2.2 List of parameters
p1121[0...n]

Ramp-function generator ramp-down time / RFG ramp-down time

VECTOR_G Can be changed: C2(1), U, T
Data type: FloatingPoint32
P-Group: Setpoints
Not for motor type: -
Min
0.000 [s]
Description: Sets the ramp-down time for the ramp-function generator.
The ramp-function generator ramps-down the speed setpoint from the maximum speed (p1082) down to standstill
(setpoint = 0) in this time.
Further, the ramp-down time is always effective for OFF1.
Dependency: Refer to: p1082, p1139
Note: For U/f control and sensorless vector control (see p1300), a ramp-down time of 0 s is not expedient. The setting
should be based on the startup times (r0345) of the motor.
p1122[0...n]

BI: Bypass ramp-function generator / Bypass RFG

VECTOR_G Can be changed: U, T
Data type: Unsigned32 / Binary
P-Group: Setpoints
Not for motor type: -
Min
-
Description: Sets the signal source for bypassing the ramp generator (ramp-up and ramp-down times = 0).
Notice: The parameter may be protected as a result of p0922 or p2079 and cannot be changed.
Note: For VECTOR in encoderless operation, it is not permissible that the ramp-function generator is bypassed.
p1130[0...n]

Ramp-function generator initial rounding-off time / RFG t_start_round

VECTOR_G Can be changed: U, T
Data type: FloatingPoint32
P-Group: Setpoints
Not for motor type: -
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

VECTOR_G Can be changed: U, T
Data type: FloatingPoint32
P-Group: Setpoints
Not for motor type: -
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.
304
Calculated: -
Dyn. index: DDS, p0180
Units group: -
Scaling: -
Max
999999.000 [s]
Calculated: -
Dyn. index: CDS, p0170
Units group: -
Scaling: -
Max
-
Calculated: -
Dyn. index: DDS, p0180
Units group: -
Scaling: -
Max
30.000 [s]
Calculated: -
Dyn. index: DDS, p0180
Units group: -
Scaling: -
Max
30.000 [s]
List Manual (LH2), 04/2014, A5E03263479A
Access level: 1
Func. diagram: 3060, 3070
Unit selection: -
Expert list: 1
Factory setting
10.000 [s]
Access level: 3
Func. diagram: 2505
Unit selection: -
Expert list: 1
Factory setting
0
Access level: 2
Func. diagram: 3070
Unit selection: -
Expert list: 1
Factory setting
0.000 [s]
Access level: 2
Func. diagram: 3070
Unit selection: -
Expert list: 1
Factory setting
0.000 [s]
SINAMICS G130/G150