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WARNING
The acceleration precontrol r1518 is kept at the old value if the ramp-function generator tracking (r1199.5) is active or
the ramp-function generator output is set (r1199.3). This is used to avoid torque peaks. Depending on the application,
it may therefore be necessary to disable the ramp-function generator tracking (p1145 = 0) or the acceleration
precontrol (p1496 = 0).
The acceleration precontrol is set to zero, if the Vdc control is active (r0056.14/15).
Note
The parameter is set to 100% by the rotating measurement (refer to p1960).
The acceleration precontrol may not be used if the speed setpoint manifests significant ripple (e.g. analog setpoint) and
the rounding-off in the speed ramp-function generator is disabled.
We also recommend that the precontrol mode is not used if there is gearbox backlash.
p1496[0...n]
Acceleration precontrol scaling / a_prectrl scal
CUG120XA_USS
Access level: 3
(PM330)
Can be changed: T, U
Unit group: -
Min:
0.0 [%]
Description:
Sets the scaling for the acceleration precontrol of the speed/velocity controller.
Dependency:
See also: p0341, p0342
WARNING
The acceleration precontrol r1518 is kept at the old value if the ramp-function generator tracking (r1199.5) is active or
the ramp-function generator output is set (r1199.3). This is used to avoid torque peaks. Depending on the application,
it may therefore be necessary to disable the ramp-function generator tracking (p1145 = 0) or the acceleration
precontrol (p1496 = 0).
The acceleration precontrol is set to zero, if the Vdc control is active (r0056.14/15).
Note
The parameter is set to 100% by the rotating measurement (refer to p1960).
The acceleration precontrol may not be used if the speed setpoint manifests significant ripple (e.g. analog setpoint) and
the rounding-off in the speed ramp-function generator is disabled.
We also recommend that the precontrol mode is not used if there is gearbox backlash.
r1508
CO: Torque setpoint before supplementary torque / M_set bef. M_suppl
Access level: 2
Can be changed: -
Unit group: 7_1
Min:
- [Nm]
Description:
Displays the torque setpoint before entering the supplementary torque.
For closed-loop speed control, r1508 corresponds to the speed controller output.
r1518[0...1]
CO: Accelerating torque / M_accel
Access level: 3
Can be changed: -
Unit group: 7_1
Min:
- [Nm]
Description:
Displays the accelerating torque for precontrol of the speed controller.
SINAMICS G120XA converter
Operating Instructions, 03/2019, FW V1.0, A5E44751205B AB
Calculated: -
Scaling: -
Unit selection: -
Max:
10000.0 [%]
Calculated: -
Scaling: p2003
Unit selection: p0505
Max:
- [Nm]
Calculated: -
Scaling: p2003
Unit selection: p0505
Max:
- [Nm]
Parameters
7.3 Parameters
Data type: FloatingPoint32
Dynamic index: DDS, p0180
Function diagram: 6020, 6031
Factory setting:
100.0 [%]
Data type: FloatingPoint32
Dynamic index: -
Function diagram: 6030, 6060,
6722
Factory setting:
- [Nm]
Data type: FloatingPoint32
Dynamic index: -
Function diagram: 6060
Factory setting:
- [Nm]
523
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