Statistics on SF-CA card problems
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  1. #1
    Join Date
    Nov 2017
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    LATVIA
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    Default Statistics on SF-CA card problems

    Hello to everyone here!
    This time something like a little poll. As we all know number one problem in Mazak electronics is VFD. Im interested about SF-CA board that lives in Mitsubishi FR-SF- do You guys faced with any other technical problem with that board that is not connected with power electronics (i.e. IGBTs, drivers, etc)? Only bare SF-CA here- was there some damages to processors, memory chips, any other logic ICs, MAC012 chip that You remember? You may ask- why such questions? There were some faults in driver previously when I bought my machine- classic: drivers, some burnt PCB traces and so on. I repaired all, and it works (still not sure for how long this will continue). There is a two ways to be safe for future- buy another VFD (here in practicalmachinist there is topic about replacement with non-Mitsubishi VFDs) or replacement SF-CA card (used of course). What is Your thoughts guys- go the first way or second and keep it as a spare part for swap in case of any. Also tell about faced problems.
    Thanks!

  2. #2
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    Aug 2018
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    more reliable then dinosaur FR-SE
    -had one , parameters error, ROM chip failed.
    -another was, after 5 minutes, it would stop talking to NC control, and watchdog timer is on
    -may be few with IGBT drivers bad output signals
    that is it

  3. #3
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    Nov 2017
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    Default

    Quote Originally Posted by noname777 View Post
    more reliable then dinosaur FR-SE
    Thats nice to hear.


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