Siemens SINAMICS G120D List Manual page 190

Parameters
List of parameters
Warning: An excessively low value can result in instability.
Note: For p1333 = 0 Hz, the FCC starting frequency is automatically set to 6 % of the rated motor frequency.
p1334[0...n] U/f control slip compensation starting frequency / Slip comp start
Access level: 3
Can be changed: U, T
Units group: -
Min
0.00 [Hz]
Description: Sets the starting frequency of the slip compensation.
Note: For p1334 = 0, the starting frequency of the slip compensation is automatically set to 6 % of the rated motor fre-
quency.
p1335[0...n] Slip compensation scaling / Slip comp scal
Access level: 3
Can be changed: U, T
Units group: -
Min
0.0 [%]
Description: Sets the setpoint for slip compensation in [%] referred to r0330 (motor rated slip).
p1335 = 0.0 %: Slip compensation de-activated.
p1335 = 100.0 %: The slip is completely compensated.
Dependency: Prerequisite for a precise slip compensation for p1335 = 100 % are the precise motor parameters (p0350 ... p0360).
If the parameters are not precisely known, a precise compensation can be achieved by varying p1335.
For U/f control types with Eco optimization (4 and 7), the slip compensation must be activated in order to guarantee
correct operation.
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
Can be changed: U, T
Units group: -
Min
0.00 [%]
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
Can be changed: -
Units group: -
Min
- [%]
Description: Displays the actual compensated slip [%] referred to r0330 (rated motor slip).
1-190
Calculated: p0340 = 1
Scaling: -
Unit selection: -
Max
3000.00 [Hz]
Calculated: -
Scaling: -
Unit selection: -
Max
600.0 [%]
Calculated: -
Scaling: -
Unit selection: -
Max
600.00 [%]
Calculated: -
Scaling: PERCENT
Unit selection: -
Max
- [%]
© Siemens AG 2012 - 2013 All Rights Reserved
SINAMICS G120D List Manual (LH14), 01/2013
Data type: FloatingPoint32
Dyn. index: DDS, p0180
Func. diagram: 6310
Factory setting
0.00 [Hz]
Data type: FloatingPoint32
Dyn. index: DDS, p0180
Func. diagram: 1690, 6310
Factory setting
0.0 [%]
Data type: FloatingPoint32
Dyn. index: DDS, p0180
Func. diagram: 6310
Factory setting
250.00 [%]
Data type: FloatingPoint32
Dyn. index: -
Func. diagram: 6310
Factory setting
- [%]