V/f control (vector control)
6.3 Slip compensation
Drive functions
Function Manual, 11/2017, 6SL3097-4AB00-0BP5
305
6.3
Slip compensation
The slip compensation ensures that the motor setpoint speed n
set
of induction motors is
essentially kept constant independent of the load. For a load step from M1 to M2, the
setpoint frequency should be automatically increased, so that the resulting frequency and
therefore the motor speed is kept constant. When the load decreases from M2 to M1, then
the setpoint frequency is automatically reduced.
If a motor holding brake is used, a setting value can be specified at the slip compensation
output via p1351. A parameter setting of p1351 > 0 automatically activates the slip
compensation (p1335 = 100%).
Figure 6-5
Slip compensation
Overview of important parameters (see SINAMICS S120/S150 List Manual)
•
r0330[0...n]
Rated motor slip
•
p1334[0...n]
V/f control slip compensation starting frequency
•
p1335[0...n]
Slip compensation scaling
p1335 = 0.0 %
The slip compensation is deactivated.
p1335 = 100.0 %: The slip is fully compensated.
•
p1336[0...n]
Slip compensation limit value
•
r1337
CO: Actual slip compensation
•
p1351[0...n]
CO: Motor holding brake start frequency
Содержание SINAMICS S120
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Страница 24: ...Contents Drive functions 24 Function Manual 11 2017 6SL3097 4AB00 0BP5 ...
Страница 202: ...Servo control 4 21 Voltage precontrol Drive functions 202 Function Manual 11 2017 6SL3097 4AB00 0BP5 ...
Страница 296: ...Vector control 5 23 Asynchronous pulse frequency Drive functions 296 Function Manual 11 2017 6SL3097 4AB00 0BP5 ...
Страница 312: ...V f control vector control 6 5 Vdc control Drive functions 312 Function Manual 11 2017 6SL3097 4AB00 0BP5 ...
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Страница 1044: ...Appendix A 2 Documentation overview Drive functions 1044 Function Manual 11 2017 6SL3097 4AB00 0BP5 A 2 Documentation overview ...
Страница 1082: ...Appendix A 7 Functions of SINAMICS S120 Combi Drive functions 1082 Function Manual 11 2017 6SL3097 4AB00 0BP5 ...
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