partsproduction
Titanium
- Joined
- Aug 22, 2011
- Location
- Oregon coast
I asked in an earlier thread for advice about a power surge that
damaged my largest CNC lathe, a Takisawa TW-30 . The circumstance
again, as far as I can recall;
My employee was loading a fresh part into the collet of the
waiting lathe when the power crashed off, then went back on within
a fraction of a second. Moments later the main breaker of the shop
opened. (When I asked the power company what had happened they said
a farmer misdirected a manure irrigation spray nozzle which hit a
high tension line and knocked out power for a large area.)
When we were sure the power was back on he tried to restart the
lathe, but it would not run the motor for more than 5 or 6 seconds
before tripping the main breaker again with a "BANG!".
My normal technician was on vacation so we called FANUC, who sent
a technician out from Portland, which is 75 miles away.
The FANUC man went through a lengthy procedure, exchanging compon-
ents and trying different tests. He finally said he thought the motor
had been damaged, and/or the power from the motor controller to the
motor had been damaged, but that he was not allowed to change that
wiring because Takisawa installed it, not FANUC.
About this time my technician called, back from vacation, and soon
was here looking it over. He also read the FANUC tech's report, so he
changed out the wiring to the motor. No joy.
He tried changing the drive parameters back to what they were before
the FANUC tech changed them, as this machine has two sets of motor
parameters that differ after a problem in 2002.
Next he wondered if the slightly smaller wires he had installed may
have had a negative effect so he installed larger wires. I do not know
whether or not the wire he installed was the same as the original
metric wire Takisawa used, or indeed whether it makes much difference.
The wire change #1 didn't help so my Tech pulled the motor and sent
it to TIE FAUNC World for repair or replacement, we got the motor back
"As good as the original was when new" we were told.
Soon the motor was back and still won't run, the screen shows
"Spindle error 12" or close to that, "Spindle code 12"?
So he then changed the parameters again to a new set suggested by the
FANUC technician, again no joy.
Then he posited the question of whether or not the conduit running under the concrete had been compromised, so he went to Portland and
got a flex cable to bypass the wire in the conduit and all the way back to the main box. Nothing!
It's been months now and we are getting farther and farther behind, everyone involved wants this to be settled and I'm running out of ideas.
Please, if anyone has any ideas let us know, and I thank you all for reading this long post.
parts
damaged my largest CNC lathe, a Takisawa TW-30 . The circumstance
again, as far as I can recall;
My employee was loading a fresh part into the collet of the
waiting lathe when the power crashed off, then went back on within
a fraction of a second. Moments later the main breaker of the shop
opened. (When I asked the power company what had happened they said
a farmer misdirected a manure irrigation spray nozzle which hit a
high tension line and knocked out power for a large area.)
When we were sure the power was back on he tried to restart the
lathe, but it would not run the motor for more than 5 or 6 seconds
before tripping the main breaker again with a "BANG!".
My normal technician was on vacation so we called FANUC, who sent
a technician out from Portland, which is 75 miles away.
The FANUC man went through a lengthy procedure, exchanging compon-
ents and trying different tests. He finally said he thought the motor
had been damaged, and/or the power from the motor controller to the
motor had been damaged, but that he was not allowed to change that
wiring because Takisawa installed it, not FANUC.
About this time my technician called, back from vacation, and soon
was here looking it over. He also read the FANUC tech's report, so he
changed out the wiring to the motor. No joy.
He tried changing the drive parameters back to what they were before
the FANUC tech changed them, as this machine has two sets of motor
parameters that differ after a problem in 2002.
Next he wondered if the slightly smaller wires he had installed may
have had a negative effect so he installed larger wires. I do not know
whether or not the wire he installed was the same as the original
metric wire Takisawa used, or indeed whether it makes much difference.
The wire change #1 didn't help so my Tech pulled the motor and sent
it to TIE FAUNC World for repair or replacement, we got the motor back
"As good as the original was when new" we were told.
Soon the motor was back and still won't run, the screen shows
"Spindle error 12" or close to that, "Spindle code 12"?
So he then changed the parameters again to a new set suggested by the
FANUC technician, again no joy.
Then he posited the question of whether or not the conduit running under the concrete had been compromised, so he went to Portland and
got a flex cable to bypass the wire in the conduit and all the way back to the main box. Nothing!
It's been months now and we are getting farther and farther behind, everyone involved wants this to be settled and I'm running out of ideas.
Please, if anyone has any ideas let us know, and I thank you all for reading this long post.
parts