Siemens SINAMICS G120 List Manual page 250

2 Parameters
2.2 List of parameters
r1439 Speed setpoint I component / n_set I_comp
Access level: 4
Can be changed: -
Unit group: 3_1
Min
- [rpm]
Description: Displays the speed setpoint for the I component of the speed controller (output of the reference model after the
setpoint limiting).
Dependency: Not visible with application class: "Standard Drive Control" (SDC, p0096 = 1), "Dynamic Drive Control" (DDC, p0096
= 2)
Refer to: r1438
Note: In the standard state (the reference model is deactivated), r1438 = r1439.
p1440[0...n] CI: Speed controller speed actual value / n_ctrl n_act
Access level: 3
Can be changed: T
Unit group: -
Min
-
Description: Sets the signal source for the speed actual value of the speed controller.
Dependency: Not visible with application class: "Standard Drive Control" (SDC, p0096 = 1)
Refer to: r1443
Caution: Speed control with encoder (p1300 = 21):
For the speed or position signal of the motor model there must always be a motor encoder available (evaluation via
SMC/SMI, see p0400). The actual speed of the motor (r0061) and the position data for synchronous motors continue
to come from this motor encoder and are not affected by the setting of p1440.
Interconnection of p1440:
If connector input p1440 is interconnected with an external speed actual value, the identical scaling of the speed
should be observed (p2000).
Notice: If the speed signal is made available via blocks which can be interconnected freely, its sampling time should not
exceed that of the closed-loop speed controller (p0115[1]) and the calculation "PRIOR TO closed-loop speed
controller" should be made.
in order that for a motor speed encoder fault, a changeover can be made to encoderless operation (see p0491), the
speed signal, if it is derived from its own motor speed encoder, must be used from r0063 and not from r0061.
p1441[0...n] Actual speed smoothing time / n_act T_smooth
Access level: 3
Can be changed: U, T
Unit group: -
Min
0.00 [ms]
Description: Sets the smoothing time constant (PT1) for the speed actual value.
Dependency: Not visible with application class: "Standard Drive Control" (SDC, p0096 = 1)
Refer to: r0063
Note: The speed actual value should be smoothed for encoders with a low pulse number or for resolvers.
After this parameter has been changed, we recommend that the speed controller is adapted and/or the speed
controller settings checked Kp (p1460) and Tn (p1462).
250
Calculated: -
Scaling: p2000
Unit selection: p0505
Max
- [rpm]
Calculated: -
Scaling: p2000
Unit selection: -
Max
-
Calculated: p0340 = 1,3,4
Scaling: -
Unit selection: -
Max
50.00 [ms]
Data type: FloatingPoint32
Dyn. index: -
Func. diagram: 5030, 5040, 6031
Factory setting
- [rpm]
Data type: U32 / FloatingPoint32
Dyn. index: CDS, p0170
Func. diagram: 6040
Factory setting
63[0]
Data type: FloatingPoint32
Dyn. index: DDS, p0180
Func. diagram: 4715
Factory setting
0.00 [ms]
SINAMICS G120 CU250S-2 Control Units
List Manual, 09/2017, A5E33842890