Note
The purpose of slip compensation is to maintain a constant motor speed regardless of the applied load. The fact that
the motor speed decreases with increasing load is a typical characteristic of induction motors.
For synchronous motors, this effect does not occur and the parameter has no effect in this case.
For the open-loop control modes p1300 = 5 and 6 (textile sector), the slip compensation is internally disabled in order
to be able to precisely set the output frequency.
If p1335 is changed during commissioning (p0010 > 0), then it is possible that the old value will no longer be able to be
set. The reason for this is that the dynamic limits of p1335 have been changed by a parameter that was set when the
drive was commissioned (e.g. p0300).
p1336[0...n]
Slip compensation limit value / Slip comp lim val
Access level: 3
Calculated: -
Data type: FloatingPoint32
Can be changed: T, U
Scaling: -
Dynamic index: DDS, p0180
Unit group: -
Unit selection: -
Function diagram: 6310, 6853
Min:
0.00 [%]
Max:
600.00 [%]
Factory setting:
250.00 [%]
Description:
Sets the limit value for slip compensation in [%] referred to r0330 (motor rated slip).
r1337
CO: Actual slip compensation / Slip comp act val
Access level: 3
Calculated: -
Data type: FloatingPoint32
Can be changed: -
Scaling: PERCENT
Dynamic index: -
Unit group: -
Unit selection: -
Function diagram: 6310, 6853
Min:
- [%]
Max:
- [%]
Factory setting:
- [%]
Description:
Displays the actual compensated slip [%] referred to r0330 (rated motor slip).
Dependency:
p1335 > 0 %: Slip compensation active.
See also: p1335
p1338[0...n]
U/f mode resonance damping gain / Uf Res_damp gain
Access level: 3
Calculated: CALC_MOD_CON Data type: FloatingPoint32
Can be changed: T, U
Scaling: -
Dynamic index: DDS, p0180
Unit group: -
Unit selection: -
Function diagram: 6300, 6310,
6853
Min:
0.00
Max:
100.00
Factory setting:
0.00
Description:
Sets the gain for resonance damping for U/f control.
Dependency:
See also: p1300, p1339, p1349
Note
The resonance damping function dampens active current oscillations that frequency occur under no-load conditions.
The resonance damping is active in a range from approximately 6 % of the rated motor frequency (p0310). The shutoff
frequency is determined by p1349.
For the open-loop control modes p1300 = 5 and 6 (textile sectors), the resonance damping is internally disabled in order
that the output frequency can be precisely set.
p1339[0...n]
U/f mode resonance damping filter time constant / Uf Res_damp T
Access level: 4
Calculated: CALC_MOD_CON Data type: FloatingPoint32
Can be changed: T, U
Scaling: -
Dynamic index: DDS, p0180
Unit group: -
Unit selection: -
Function diagram: 6310, 6853
Min:
1.00 [ms]
Max:
1000.00 [ms]
Factory setting:
20.00 [ms]
Description:
Sets the filter time constant for resonance damping for U/f control.
Parameters
7.2 Parameter list
SINAMICS G120X converter
Operating Instructions, 06/2019, FW V1.01, A5E44751209B AC
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