EXPERTISE,
I am having a issue related servo drive where HMI shows:
and when i check the control wiring of the servo drive, ACOPOS 1090, all found OK but the Ready LED blinks and machine is force to stop giving alarm,
attached the diagram for references,
Hi @PEMA ,
Welcome to the community!
We need SystemDump to get more information, if you are not familiar with that please read this post How to collect a System Dump from a B&R controller .
Regarding status indicators on the drive (ACOPOS User’s ver 2.10 page 31 ):
You can download ACOPOS User’s manual from our website.
You are very welcome to the community, but normally when you have an issue on your machine you should call your machine builder, Kosme in your case.
I worked with them in the past, they have a service team with deep B&R knowledge (HW and SW).
Thanks
Ciao
Valerio
Thank you Mr.Manenti. And I already have the cases frowarded to Kosme. However, to undersatnd more to the problem and to share same kind as a learn and doing program in B & R community.
Hi @PEMA ,
We don’t know if in your prj you are using legacy (ACP10) or mapp Motion for axis control, but ACOPOS 1090 is a little bit old and I guess you use legacy version,
so with SDM, there is a page axis information where you get more details (The Axis Information page can be opened using the URL **http://IP-address/sdm/*motion_axis.html**\*):
You can see for example if the Enable signal is high or low, Alarm…
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I see, from the Academy, we have a free microlearning module for the System Diagnostic Manager (SDM) Release 2026 : Learning Content for End Users and Service Engineers: SDM
Ciao
Valerio
Thank you for providing more insights on troubleshooting.
Following the troubleshooting procedure, an attempt was made to establish communication with the SDM; however, the connection failed with a “Not Found” error. Subsequent diagnostics generated the following fault codes:
7210 – DC Bus Voltage Unstable
7215 – Power Mains Phase Failure
29203 – Enable Signal Unstable
4005 – Controller Cannot Switch On
Further investigation focused on the DC bus measurements, where the observed voltage was approximately 607 VDC with noticeable fluctuation, compared to the expected value of around 580 VDC based on the input supply conditions.
This deviation and instability indicated a likely internal fault within the power card. Due to limitations in further isolating the fault at component level, corrective action was taken by replacing the drive unit.
After replacement, the system was tested and confirmed to be operating normally.
