Skip to Content

SiePortal

The integrated platform for your product selection, buying and support workflow - bringing together Industry Mall and Online Support.

SiePortalDeutsch

Search

Home
Support Support
{{(apiData.Support | filter:{'rank':1}:true)[0].title}} Support
- Menu temporary not available
- Menu temporary not available
- Menue temporary not available
- {{item.title}}

Products & Services
- Menu temporary not available
- Menue temporary not available
- {{item.title}}
Support Support
{{(apiData.Support | filter:{'rank':1}:true)[0].title}} Support
- Menu temporary not available
- Menue temporary not available
- {{item.title}}
MySiePortal MySiePortal
{{(apiData.MySiePortal | filter:{'rank':1}:true)[0].title}} MySiePortal
- Menu temporary not available
- Menue temporary not available
- {{item.title}}
Cart ({{apiData.CartCount}})

Navigation

Power failure during positioning

Created by: Tomas S. at: 7/30/2014 6:29 PM (7 Replies)

Rating (0)

Thanks 0

8 Entries

7/30/2014 6:29 PM	Rate (0)
Tomas S. Posts: 8 Rating: (0)	Hello, I solve the problem when I demokufr with SINAMICS S110 servo motor SIMOTICS S 1FK7 (see kufr.jpg). The drive works in service and at the same time positioning during a power outage occurs and I need to rebuilt the servomotor to the zero position. In the manual I found, as established standard telegram 111 (see ST111.jpg) and for my case, I focused on control words POS_STW2 (see POS_STW2.jpg) and STW2 (see STW2.jpg). What I had in these control words to set that during a power outage servomotor rebuilt to zero position? Thank you in advance for your answer Regards Tomas Attachment Pictures.zip (174 Downloads)
Tomas S. Posts: 8 Rating: (0)
Suggestion To thank Quote Answer

7/31/2014 10:13 PM	Rate (0)
zako_ Gold Member Joined: 5/22/2012 Last visit: 3/24/2022 Posts: 895 Rating: (67)	If you have a power loss (line fault), you should stop the axis as fast as possible - for examle with OFF3 ramp. I don`t understand your real problem and I can not open your files.

Suggestion To thank Quote Answer

8/1/2014 9:21 AM	Rate (0)
Tomas S. Posts: 8 Rating: (0)	Hi, I need the actuator during a power outage turned to the reference point. Thank you for your understanding Attachment pictures.pdf (157 Downloads)
Tomas S. Posts: 8 Rating: (0)
Suggestion To thank Quote Answer

8/1/2014 6:25 PM	Rate (0)
SnoPz Advanced Member Joined: 5/9/2014 Last visit: 11/23/2021 Posts: 18 Rating: (1)	Are you wanting to position the axis during the outage or immediatly after power returns?
	*Information offered is solely academic. Anyone using this information assumes all liability for changes based on given information. Always ensure a safe working environment before making any changes to automation equipment.*
Suggestion To thank Quote Answer

8/1/2014 6:40 PM	Rate (0)
Tomas S. Posts: 8 Rating: (0)	SnoPz Are you wanting to position the axis during the outage or immediatly after power returns? Hi, I want to position the axis during power failure (safety function). Tomas
Tomas S. Posts: 8 Rating: (0)
Suggestion To thank Quote Answer

8/1/2014 7:30 PM	Rate (0)
SnoPz Advanced Member Joined: 5/9/2014 Last visit: 11/23/2021 Posts: 18 Rating: (1)	The drive has many layers of faults that would prevent the drive from running once your line supply (p283) and DC link undervoltage (r296) thresholds were exceeded. Even if you were able to initiate the move before these faults initiated an OFF2, you would, most likely, not be able to complete the move before the fault occured. You can reduce these threshold values (or mask the faults) but you would most likely damage your drive and motor. The only way that I see this being able to work would be to do everything in the drive using the free blocks and initiate a position move using the fixed setpoints. If this was a rotary position and the axis was rotating fast enough it just might work some of the time. The link below is to the Free Function Block Manual. https://a248.e.akamai.net/cache.automation.siemens.com/dnl/DM/DM0MzgyNwAA_49492040_HB/FH2_0111_eng.pdf
	*Information offered is solely academic. Anyone using this information assumes all liability for changes based on given information. Always ensure a safe working environment before making any changes to automation equipment.*
Suggestion To thank Quote Answer

8/1/2014 9:13 PM	Rate (0)
Tomas S. Posts: 8 Rating: (0)	Hi, let me ask otherwise. What is generally uses the control word STW2 (see STW2.jpg)? Thank you in advance for your answer Attachment STW2.jpg (164 Downloads)
Tomas S. Posts: 8 Rating: (0)
Suggestion To thank Quote Answer

8/1/2014 9:54 PM	Rate (0)
SnoPz Advanced Member Joined: 5/9/2014 Last visit: 11/23/2021 Posts: 18 Rating: (1)	The only function that is activated with Telegram 111 STW2 is the "Parking function". Which can be found in the Function Manual. This function requires that you stop the drive in question before activating it so it cannot be performed during a power outage. The only other function in this Control Word is the "Traverse to Fixed Endstop" which, once activated, keeps a specified torque on the motor while deleting any following error. If the axis moves outside a defined range, the drive will fault.
	*Information offered is solely academic. Anyone using this information assumes all liability for changes based on given information. Always ensure a safe working environment before making any changes to automation equipment.*
Suggestion To thank Quote Answer

|

Share this page:

Share this page on...

Related topics by keywords:

SINAMICS_S

Follow us on