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Parameters
List of parameters
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 con-
troller settings checked Kp (p1460) and Tn (p1462).
p1441[0...n]
Actual velocity, smoothing time / v_act T_smooth
SERVO (Lin)
Can be changed: U, T
Data type: Floating Point
P-Group: Closed-loop control
Not for motor type: REL
Min
0.00 [ms]
Description:
Sets the smoothing time constant (PT1) for the velocity actual value.
Dependency:
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 velocity controller is adapted and/or the velocity
controller settings checked Kp (p1460) and Tn (p1462).
p1441[0...n]
Actual speed smoothing time / n_ist T_smooth
VECTOR (n/M)
Can be changed: U, T
Data type: Floating Point
P-Group: Closed-loop control
Not for motor type: REL
Min
0.00 [ms]
Description:
Sets the smoothing time constant (PT1) for the speed actual value.
Dependency:
Refer to: r0063
Notice:
Smoothing times above 20 ms are only possible if the drive is accelerated or braked with the appropriately long
ramp-up/ramp-down times. Otherwise, significant torque errors can occur and there is the danger that the drive is
powered-down (tripped) with F07902 (motor stalled).
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 con-
troller settings checked Kp (p1460) and Tn (p1462).
p1442[0...n]
Speed controller speed actual value smoothing time / n_ctr n_act T_smth
VECTOR (n/M)
Can be changed: U, T
Data type: Floating Point
P-Group: Closed-loop control
Not for motor type: REL
Min
0.00 [ms]
Description:
Sets the smoothing time for the actual speed value of the speed controller for closed-loop control with encoder.
Note:
The smoothing must be increased if there is gear backlash. For longer smoothing times, the integral time of the
speed controller must also be increased (e.g. using p0340 = 4).
r1444
Speed controller, speed setpoint steady-state (static) / n_ctrl n_set stat
SERVO, VECTOR
Can be changed: -
(n/M)
Data type: Floating Point
P-Group: Closed-loop control
Not for motor type: REL
Min
- [RPM]
Description:
Displays the sum of all speed setpoints that are present.
1-400
Calculated: CALC_MOD_CON
Dynamic index: DDS, p0180
Units group: -
Max
50.00 [ms]
Calculated: -
Dynamic index: DDS, p0180
Units group: -
Max
1000.00 [ms]
Calculated: CALC_MOD_ALL
Dynamic index: DDS, p0180
Units group: -
Max
32000.00 [ms]
Calculated: -
Dynamic index: -
Units group: 3_1
Max
- [RPM]
© Siemens AG 2007 All Rights Reserved
SINAMICS S List Manual (LH1), 07/2007
Access level: 3
Func. diagram: 4710, 4715
Unit selection: -
Expert list: 1
Factory setting
0.00 [ms]
Access level: 3
Func. diagram: 4710, 4715
Unit selection: -
Expert list: 1
Factory setting
0.00 [ms]
Access level: 2
Func. diagram: 6040
Unit selection: -
Expert list: 1
Factory setting
4.00 [ms]
Access level: 3
Func. diagram: 5030
Unit selection: p0505
Expert list: 1
Factory setting
- [RPM]
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