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3RT2 not fully activated, so not delta mode

Created by: joeyjofer at: 11/28/2016 12:48 PM (1 Replies)

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11/28/2016 12:48 PM	Rate (0)
joeyjofer Posts: 2 Rating: (0)	Good Morning I am a student and I am connecting a three-phase motor in star-triangle mode, but I have a problem that does not allow me to finish my work. I am using the following kit as a school kit: 3RV2011-0FA10 for current flow 3 contactors: 3RT2015-1FB41, 3RT2015-1FB42, 3RT2015-1FB42 3 function modules: 3RA2912-0, 3RA2911-0, 3RA2911-0 A thermal regulator: 3RB3016-1RB0 And two buttons to perform the start (NO) and stop (NC). My problem is that I can not go from star mode to triangle mode because apparently the triangle contactor is not fully powered and does not allow the power to pass to the motor. I have tested with a multimeter if the contactor is powered and I see that the voltage is correct but I can not explain why it does not activate the triangle mode. Example images Attachment IMG_5911.JPG (305 Downloads)
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11/28/2016 3:48 PM	Rate (0)
LesPaul Posts: 467 Rating: (59)	hello joeyofer, If you use a mechanical interlock between star –triangle contactor, so check the correct function of the mechanical interlock. If not, please contact Siemens Technical Assistance. Email:technical-assistance@siemens.com regards LesPaul
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