Skip to Content

Register Login

Industry Online Support

Technical Forum

Navigation

S120 : measurement function : Speed controller setpoint frequency response (after speed setpoint filter)

Created by: DavidBrown at: 9/21/2014 9:21 PM (3 Replies)

Rating (0)

Thanks 0

4 Entries

9/21/2014 9:21 PM	Rate (0)
DavidBrown Gold Member Joined: 6/29/2012 Last visit: 1/25/2023 Posts: 962 Rating: (7)	I should want to use the measurement function :' Speed controller setpoint frequency response (after speed setpoint filter'. My application is a frame that can be lifted upwards of pushed downwards with a motor. For the upward direction the frame and the motor are free to move : the motor just needs the torque to lift the frame. For the downward direction, the frame is hanging in a layer of textile that blocks the downward movement. So when activating the motor in downward direction, speed will be zero, but the generated torque will be used to put tension on the textile. I don't know now if upward is the positive direction for the drive or negative direction. I was wondering how will the measurement function 'Speed controller setpoint frequency respons (after the speed setpoint filter) behave in case the positive direction is upwards and how if the positive direction is downwards? I suppose with default settings the measurement is executed in positive direction? Does the system allow to give in negative values for amplitude and offset in the setup screen of the measurement? Someone familiar with this measurement function?

Suggestion To thank Quote Answer

9/26/2014 9:19 PM	Rate (0)
DavidBrown Gold Member Joined: 6/29/2012 Last visit: 1/25/2023 Posts: 962 Rating: (7)	No ideas or experiences?

Suggestion To thank Quote Answer

9/27/2014 6:44 AM	Rate (0)
PISCEAN 2010 Diamond Member Joined: 4/23/2010 Last visit: 1/29/2023 Posts: 7962 Rating: (844)	How is the present system for above application?

Suggestion To thank Quote Answer

9/29/2014 3:03 PM	Rate (0)
DavidBrown Gold Member Joined: 6/29/2012 Last visit: 1/25/2023 Posts: 962 Rating: (7)	I succeeded in taking what seems a valid measurment of '‘Speed controller setpoint frequency response (after speed setpoint filter)’ . Included is a picture of the bode diagram. What surprises me are the variations at very low Hz. Could a current setpoint filter be of any use here, and if so, how would it be setup? Thanks. Attachment Bode.jpg (70 Downloads)

Suggestion To thank Quote Answer

|

Share this page:

Share this page on...

Related topics by keywords:

SINAMICS_S

Follow us on