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VFD G120 current oscilation

5/9/2022 4:32 PM	Rate (0)
AutoGen_7528722 Member Joined: 4/12/2022 Last visit: 5/18/2023 Posts: 1 Rating: (0)	Dears, I have a G120 VFD moving a mill, but the current oscilates a lot during the operation. I would like to know if there is some parameter, or maybe a diferent control strategy to make i more smooth. I have a information that in same application in ATV71 Schneider VFD they use a SIT "Speed Integration Time" to make it more smooth, but I dont have the application to compare. I fact the mill has oscilastion in its load, but should not but that much. CU240 MODULE 6SL3244-0BB12-1FA0 PM240 MODULE 6SL3210-1PE27-5AL0 MOTOR 37KW Attachment Sem título.png (384 Downloads)

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5/9/2022 6:32 PM	Rate (0)
Tractor Gold Expert Joined: 3/27/2008 Last visit: 9/10/2025 Posts: 1214 Rating: (148)	This appears to be derived from the load, I assume the drive is working in SLVC, and the commissioning has been correct? The degree of oscillation can be judged by recording the current for an empty mill, compared to a loaded system. If the process is correct, that is the oscillation is not affecting the product, I would accept that the drive is providing the correct control, and not be concerned with the current oscillation. Tractor
	Last edited by: Tractor at: 05/09/2022 18:33:09 Last edited by: Tractor at: 05/09/2022 18:33:41 Tractor
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5/10/2022 9:38 AM	Rate (0)
Tractor Gold Expert Joined: 3/27/2008 Last visit: 9/10/2025 Posts: 1214 Rating: (148)	For comparison is it possible to monitor the mill speed on a temporary basis? Tractor
	Tractor
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