Helping a brother out
- From: clutch@xxxxxxxxx
- Date: Thu, 27 Nov 2008 23:24:06 -0500
My brother called me and asked me about hooking up power to a used cnc. Brother is a
master electrician not used to this stuff. Did the thirty questions and came up with an
idea of what size branch to run to it.
Just to add a bit of torque to this, my brother in law works at the firm. I don't like
free lancing since you run into too many people w/o a clue but I did it for the bro's.
Walking in, I see it is an old Okuma LB15, OSP5000L, something I know. Walking closer, I
see SDU 1. Spindle drive unit alarm. Not a good sign.
Asked what they paid for it, they said 5K. Asked if they saw it run, answer no.
After a quick look, I saw that it did not have hydraulic pressure. Okay, bad phasing,
maybe I'll get lucky. Never hooked a LB up wrong and tried to run it. Pump rather warm,
not a good thing.
Well brother switched phasing, powered back up, we got hyd pressure. Still had SDU1
alarm. Old VAC1 control. Not sure Okuma will fix those since I noticed we don't have any
at work now and we once did and we still have the LB's.
So, I decided to look at spindle drive unit, checked cabling, remembered there are a lot
of fuses behind the first board. Brothers meter takes two seconds to tone out continuity.
Thought I found a bad fuse once. Not. Then I noticed the circuit breaker that was
tripped. Seemed rather sensitive and must have opened during the move.
Reset, put the board back and the face on the drive and powered up. No alarms. Sweet.
Jogged axis, spindle, wouldn't index turret, remembered had to be at a limit, jogged,
Tried to run spindle. No joy. Bitching about tail stock.
I work on 30 or so lathes and none of ours have tail stocks. All our parts have a D
bigger than L.
Finally try extending tail stock and get chuck open alarm. I had a piece of stock that
was last run in the soft jaws, so I inserted it and tried again. No joy. So I adjusted
the prox on draw tube. That is when the gent that has to run this asked me if that was
part of the bar feeder. Oh boy, I have a feeling I'm going to get a lot of calls on this
one and did I mention family is connected to this joy?
Anyway, seems like a working machine they bought for 5K. Parted out it is worth far more.
I maintain 7 of the things at work.
They don't have any manuals. My only Okuma pdf is a 5020 wiring diagram which will not
help them. So if anyone has a pdf of the operators, programming manual, and alarm and
parameter manual for osp5000L I would be very grateful if you could email, ftp, or
whatever a copy so I can give it to them.
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