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  1. PLCs, VFDs, Motors and Controls
    I am NOT good at VFD's. I have four (4) Siemens MicroMaster 440 VFD's in some airport hanger doors. They ALL are tripping on error code F0002 upon start-up (attempting to move the door either direction). The VFD locks out. We reset it 3 or 4 times. Then finally, upon another try, the VFD...
  2. Union Topics
    Hello Everyone! My name is David, I reside in So Cal and I am new to the forum. I hope to learn a lot from everyone on here, I've learned quite a bit already! Getting to the point......I have a panel interview coming up this week with the 440 and 477 locals and quite simply I want to know what...
  3. Union Topics
    Hi All! I just finished my testing and interview for 440 and 447. I was told I am no. 141 in Riverside County and 161 in San Bernardino County. Does anyone know if I have a good chance of getting in within the next 2 years. Any insight on this or these locals would be great. Thanks! :)
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