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  • Users: Tillman
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  1. Tillman

    Opto-iso

    I have an AB plc5 with remote racks which intermittently giving me rack fault. Nothing we've done so far works. We even had a rep from AB to come out to to look over our DH+ network, but he's stumped. At this point I'm entertaining the idea of isolating my discreet I/O field wiring, and...
  2. Tillman

    Overcurrent at partial load

    I have a 125 HP, 600 RPM, 480/60/3 225 FLA induction motor driving a piston compressor. It keeps tripping on O/L (set at 234A). I put a power analyzer to it, and this is what I got: 81 kW, 175 kVAR, 193 kVA, 0.42 PF, 3 phase A 231/231/231, 3 phase U 482/482/482. Does this sound like a defective...

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