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Torque Limitation - r1538

6/27/2024 6:47 PM	Rate (0)
basar Member Joined: 4/1/2022 Last visit: 6/28/2024 Posts: 2 Rating: (0)	Hello, everyone, hope you are well, i have a question about torque Limitation. There is motor in our factory, 51 kW motor S120 drive Profibus comm. With s7400 P1300 = 20(speed control encoderless) Torque limits go from plc to drive as %+-150(p1522,1523) Sometimes the actual speed cant reach referance speed. Starter says 'torque limite reached'.i look actual torque but it shows %60-70, but the limit %150...Also i check the current , there is no problem, current is lower than nominal . i carried search in starter, and i realized that there is a value r1538(effective torque limit). This value always changes when motor running. İf actual torque is higher than r1538, the motor cant be speeder. My question is; how do r1538(effective torq limit) change? İ want to let the motor can be speeder until actual torque %150.. Thank you very much!
	Last edited by: basar at: 06/27/2024 19:02:55
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7/1/2024 8:08 AM	Rate (0)
Technology Team Platinum Expert Joined: 10/11/2006 Last visit: 10/30/2024 Posts: 5933 Rating: (815)	Hello basar, there are several influencing factors with effects on the resulting torque limit, e.g. current, power, VDC controller. A good overview about dependencies of the single parameters you can already find in the mask diagrams of STARTER. Addionally you can have a look at the function diagrams in S120 list manual for further details. https://support.industry.siemens.com/cs/ww/en/view/109827046
	With best regards, Technology Team Application consulting and pre sales support for SINAMICS, SIMATIC Technology, SIMOTION, SIMOTICS and MOTION CONNECT
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