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Hi,
Connected up an infeed/regen unit and powered up ok. Checked axis enables and realised that terminal 112 (setup mode) was not linked out. Removed the pulse enable, removed the bottom connector and linked 9 to 112 and put the plug back in leaving 3 phase on the drive. Switched on the pulse enable and bang. One dead infeed/regen module. I've has this happen before in similar but not identical circustances.
p.s. I don't remove/connect power to the module without pin 48 and pin 63 being disabled.
My Fanuc friends laugh at being able to blow up a module by changing links.
Am I doing anything wrong or is there a detailed technical overview of how the infeed regen powers up/down instead of a Siemens do this but don't do that instruction book.
Thanks
We understand you've experienced issues with infeed/regen modules failing after link changes, despite following safety precautions regarding power disconnection via pins 48 & 63. It's concerning that this has happened multiple times.
The behavior you describe suggests a potential issue with the power-up sequence and the interaction between setup mode (terminal 112) and pulse enable. While seemingly counterintuitive, directly changing links with voltage present can cause damage due to transient voltage/current spikes or incorrect initialization.
Unfortunately, a single comprehensive document detailing the exact power-up/down sequence with all internal states isn't publicly available. Siemens documentation tends to focus on 'do' and 'don't' instructions for safety and functionality. However, here’s what we can offer:
We acknowledge your frustration. While Siemens prioritizes ease of use, deeper technical understanding sometimes requires direct access to specialized documentation and support.
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