You are not registered yet. Please click here to register!

plc storereviewsdownloads
This board is for PLC Related Q&A ONLY. Please DON'T use it for advertising, etc.
Try our online PLC Simulator- FREE.  Click here now to try it.

---------->>>>>Get FREE PLC Programming Tips

New Here? Please read this important info!!!

Go Back - Interactive Q & A > - Interactive Q & A > LIVE PLC Questions And Answers

PLC training tools sale

Thread Tools Display Modes
Old February 12th, 2018, 06:23 AM   #1

aar_shr is offline
Join Date: Feb 2018
Location: mumbai
Posts: 1
Unhappy Help on ACS880 Braking Option

I need help on ACS 880 which I am controlling through Ethernet using ODVA AC/DC profile (Instance 121/171) . I am able to start stop the motor through Ethernet and give speed setpoint to the Drive also but when I try to decel in around 5 sec , it takes around 15 to 20 sec to stop the motor .

I have kept the stop mode to Ramp and I have also installed my brake resistor and connected to R+ and R- . When I give stop command I can see my start command go and setpoint also become zero but motor takes long time to stop. If I make decel time very low motor does not stop at all but it keeps on rotating at a very low frequency and only option is remove incoming power .

All motor parameters are properly set and ID run also done. In group 44 of parameter I have entered correctly the resistor setting but I am not sure whether to enable parameters in group 45 and what settings need to be done for it . Also which Stop shall I consider for stopping for ODVA profile since I am not giving any stop command but just removing the run forward command ..
Please help ???
  Reply With Quote
Old February 12th, 2018, 06:55 AM   #2

lfe is offline
Join Date: Jun 2007
Location: Barcelona
Posts: 361
Maybe it's the mechanical inertia of the moved load that makes the braking last longer. ?

Last edited by lfe; February 12th, 2018 at 06:57 AM.
  Reply With Quote
Jump to Live PLC Question and Answer Forum


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Topics
Thread Thread Starter Forum Replies Last Post
PFLX70 Dynamic Brake parameters unsaint32 LIVE PLC Questions And Answers 14 December 4th, 2014 06:54 PM
VFD class / automotive / help with regen braking leitmotif LIVE PLC Questions And Answers 12 October 2nd, 2008 07:51 AM
Braking ?? stasis LIVE PLC Questions And Answers 19 May 23rd, 2005 03:23 PM
Calling all Siemens S7-200 gurus mjamil LIVE PLC Questions And Answers 14 October 17th, 2004 06:22 PM
Regenerative Drives craigsimon LIVE PLC Questions And Answers 9 February 14th, 2003 04:09 PM

All times are GMT -5. The time now is 03:51 PM.