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Programmed velocity is limited S7 1513-pn, Sinamics G120, Reluctance motor

Created by: AutoGen_2455573 at: 1/27/2025 10:49 AM (13 Replies)

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1/27/2025 10:49 AM	Rate (0)
AutoGen_2455573 Joined: 8/28/2024 Last visit: 2/5/2025 Posts: 7 Rating: (0)	Hello I'm making a positioning Axis with a reluctance motor. In the commissioning of the drive the motor can be moved at 50Hz After setting up the technology object with the drive and the encoder via the telegram81 During commissioning test and setting up the positioning the moved distance is within 1mm at 3000mm but the speed will not go higher than 15Hz. The error on the monitoring is “Programmed velocity is limited” Can any one help me why this is happening. Please see attached screen shot With regards Keith Attachment Velocity_8.JPG (15 Downloads)

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1/27/2025 11:00 AM	Rate (0)
jacek d Platinum Expert Joined: 9/23/2005 Last visit: 2/17/2025 Posts: 4918 Rating: (748)	Check velocity limit in configuration of an axis. It seems there's a movement programmed with velocity higher than that.
	Regards, Jacek What is confusing you is the fact that you never see a number but always its digit representation. So you end up thinking that the number is the representation. - Andrej Bauer Any claims against me - based on whatever legal reason - resulting from the use of any code and/or ideas presented on this forum shall be excluded. #StayWithUkraine
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1/27/2025 12:32 PM	Rate (0)
AutoGen_2455573 Joined: 8/28/2024 Last visit: 2/5/2025 Posts: 7 Rating: (0)	Hello Jacek d, The motor/drive is set at 1500 rpm 15hz is 20mm/s the maximum is set to 70mm/s Attachment Velocity_9.JPG (9 Downloads)

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1/27/2025 1:56 PM	Rate (0)
jacek d Platinum Expert Joined: 9/23/2005 Last visit: 2/17/2025 Posts: 4918 Rating: (748)	What you showed are defaults. Limits are under Limits.
	Regards, Jacek What is confusing you is the fact that you never see a number but always its digit representation. So you end up thinking that the number is the representation. - Andrej Bauer Any claims against me - based on whatever legal reason - resulting from the use of any code and/or ideas presented on this forum shall be excluded. #StayWithUkraine
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1/27/2025 2:03 PM	Rate (0)
AutoGen_2455573 Joined: 8/28/2024 Last visit: 2/5/2025 Posts: 7 Rating: (0)	Sorry here are the limits Attachment Velocity_11.JPG (6 Downloads)

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1/27/2025 2:59 PM	Rate (0)
jacek d Platinum Expert Joined: 9/23/2005 Last visit: 2/17/2025 Posts: 4918 Rating: (748)	So, let's have a look at Mechanics and parameters of the motion command.
	Regards, Jacek What is confusing you is the fact that you never see a number but always its digit representation. So you end up thinking that the number is the representation. - Andrej Bauer Any claims against me - based on whatever legal reason - resulting from the use of any code and/or ideas presented on this forum shall be excluded. #StayWithUkraine
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1/27/2025 3:10 PM	Rate (0)
AutoGen_2455573 Joined: 8/28/2024 Last visit: 2/5/2025 Posts: 7 Rating: (0)	Here are multipull screen shots... You should be able to see all the settings. Attachment Velocity_All.pdf (4 Downloads)

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1/27/2025 3:26 PM	Rate (0)
jacek d Platinum Expert Joined: 9/23/2005 Last visit: 2/17/2025 Posts: 4918 Rating: (748)	According to my calculations the velocity limit is 63 mm/sec. I.e. at this setpoint motor achieve 1500 rpm which is its maximum speed as I can see. To run faster you should allow for higher motor rpms in a drive.
	Regards, Jacek What is confusing you is the fact that you never see a number but always its digit representation. So you end up thinking that the number is the representation. - Andrej Bauer Any claims against me - based on whatever legal reason - resulting from the use of any code and/or ideas presented on this forum shall be excluded. #StayWithUkraine
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1/27/2025 3:57 PM	Rate (0)
AutoGen_2455573 Joined: 8/28/2024 Last visit: 2/5/2025 Posts: 7 Rating: (0)	This I understand, The problem is that if I set the axis at 70mm/s or 60mm/s or 40mm/s or 22mm/s the axis will not turn/move faster than 20mm/s (see page 3 on the screen shots). but when I do the comisioning on the drive (see page 10 on the screen shots) the drive will go up to 1500rpm.

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1/28/2025 8:07 AM	Rate (0)
jacek d Platinum Expert Joined: 9/23/2005 Last visit: 2/17/2025 Posts: 4918 Rating: (748)	What is value of a variable {axis}.Override.Velocity?
	Regards, Jacek What is confusing you is the fact that you never see a number but always its digit representation. So you end up thinking that the number is the representation. - Andrej Bauer Any claims against me - based on whatever legal reason - resulting from the use of any code and/or ideas presented on this forum shall be excluded. #StayWithUkraine
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