Hi everyone, I run a 1987 model lb-15 that recently fried several resistors in the sdu. unit was rebuilt locally and replaced, however now anytime I run over 500 rpm or at any rpm in low gear, the machine shows SDU ALARM. The person who rebuilt unit had casually asked me at one point if I knew the dip switch settings on the top board. when I asked why he told me he was sure they didn't get changed but just wondered if they could be confirmed. Local Okuma reps say my company would have to let them check it out and if switches are wrong only okuma can tell me what they are, as this is proprietery information. shortly after this the power unit and transformer both died and were replaced, I am wondering if they could have been spiking board and caused problem in the first place. can still run in high gear at 500 rpm or less, but had to set rapid parameters down to keep from alarming out on long csf facing operations. Braking resistors test perfect and our own maintenance chief has tested everything he can with no explanation.
If this is a dip switch error, how dangerous is it to just try random settings?
There are four sets of switches, two side by side with 4 toggles each, and two side by side with 8 toggles each. I believe it was the 8 toggle he was refering to. the banks of 4 are set the same on/off pattern, while the banks of 8 are different. I have taken a picture of the board as they are now. unfortunately I was on vacation when they had sdu removed so noone thought to take a picture before removing it. If I found another lb-15 with the same motor and sdu would the settings possibly be valid? I run3 okumas in a department consisting of this machine, a 2002 Captain l370 and a 1982 4-axis lc30, which has a few quirks of it's own, so having limted capacity on this machine is killing our production schedule. Any ideas would be greatly appreciated Thanks