I've started wiring up the encoders on the mill and hit a snag. The
original wiring in the X-Axis (the one that moves) was replaced at some
point. Whoever replaced the wire did a really crappy job and I'm trying to
do a slightly less crappy one. I need a source for shielded/stranded cat5
wire. I need at least 4 pairs (8 conductors) and only about 30'. All the
suppliers in town, if they can get it, will only sell 1000' rolls.
Anyone know a creative source?
Also, I've got a pretty good handle on the control side of the mill but the
high power side still has me intimidated. If anyone has a few hours this
Saturday or Sunday and would like to help me stay alive, I'd sure
appreciate it. :-)
You can easily get the stranded stuff by chopping up patch cables. The
best online source I've found is Monoprice.com, but locally any of the
usual suspects (Best Buy, Staples, et cetera) have them. What you *don't*
want is the solid wire, which is what you'd find in premise wire meant to
go into walls. That would be the stuff at Lowes/HD and so on.
I also have a big spool of some nice stuff, if you tell me how much you
need I can probably hook you up.
As for the 'high power' side, do you mean the servo drivers? Those usually
aren't dangerous per se, but all the usual disclaimers apply
On Tue, Sep 25, 2012 at 9:41 AM, Brad Collette <shopinthewo...@gmail.com>wrote:
> I've started wiring up the encoders on the mill and hit a snag. The
> original wiring in the X-Axis (the one that moves) was replaced at some
> point. Whoever replaced the wire did a really crappy job and I'm trying to
> do a slightly less crappy one. I need a source for shielded/stranded cat5
> wire. I need at least 4 pairs (8 conductors) and only about 30'. All the
> suppliers in town, if they can get it, will only sell 1000' rolls.
> Anyone know a creative source?
> Also, I've got a pretty good handle on the control side of the mill but
> the high power side still has me intimidated. If anyone has a few hours
> this Saturday or Sunday and would like to help me stay alive, I'd sure
> appreciate it. :-)
I think I can free up some time this weekend to call the ambulance when you
electrocute yourself. I will put out some feelers with my grad students
about cat5 wire as well.
Let me know when you would like to work this weekend.
On , Brad Collette <shopinthewo...@gmail.com> wrote:
> I've started wiring up the encoders on the mill and hit a snag. The
> original wiring in the X-Axis (the one that moves) was replaced at some
> point. Whoever replaced the wire did a really crappy job and I'm trying
> to do a slightly less crappy one. I need a source for shielded/stranded
> cat5 wire. I need at least 4 pairs (8 conductors) and only about 30'. All
> the suppliers in town, if they can get it, will only sell 1000' rolls.
> Anyone know a creative source?
> Also, I've got a pretty good handle on the control side of the mill but
> the high power side still has me intimidated. If anyone has a few hours
> this Saturday or Sunday and would like to help me stay alive, I'd sure
> appreciate it. :-)
> --
> Brad Collette
> 573-427-7132
I didn't think patch cables were shielded. I'm not sure how important that
is though. I think thirty feet would probably rewire the whole machine.
Re high power: The original wiring took 240/3 phase. Once in the cabinet,
it split into a 3 phase 30A breaker for the spindle and single phase 20A
for everything else. I'm replacing the 3 phase side with a VFD. I've done
a temporary job wiring in the VFD and I believe it's putting out 3 phase
power as expected. From the VFD (originally breaker) it runs through a
series of fuses, contactors, and other protection devices before going to
the spindle motor. I have juice coming out of the VFD but not going into
the motor. Since I don't understand all the intermediate stuff, I'm lost.
On the single phase side, It runs through different transformers to get to
voltage needed for the servo amps. I've traced wires but haven't tried
connecting anything yet for fear of frying something important or myself.
On Tue, Sep 25, 2012 at 9:51 AM, Nathan Odle <nathan.o...@gmail.com> wrote:
> Brad:
> You can easily get the stranded stuff by chopping up patch cables. The
> best online source I've found is Monoprice.com, but locally any of the
> usual suspects (Best Buy, Staples, et cetera) have them. What you *don't*
> want is the solid wire, which is what you'd find in premise wire meant to
> go into walls. That would be the stuff at Lowes/HD and so on.
> I also have a big spool of some nice stuff, if you tell me how much you
> need I can probably hook you up.
> As for the 'high power' side, do you mean the servo drivers? Those
> usually aren't dangerous per se, but all the usual disclaimers apply
> On Tue, Sep 25, 2012 at 9:41 AM, Brad Collette <shopinthewo...@gmail.com>wrote:
>> I've started wiring up the encoders on the mill and hit a snag. The
>> original wiring in the X-Axis (the one that moves) was replaced at some
>> point. Whoever replaced the wire did a really crappy job and I'm trying to
>> do a slightly less crappy one. I need a source for shielded/stranded cat5
>> wire. I need at least 4 pairs (8 conductors) and only about 30'. All the
>> suppliers in town, if they can get it, will only sell 1000' rolls.
>> Anyone know a creative source?
>> Also, I've got a pretty good handle on the control side of the mill but
>> the high power side still has me intimidated. If anyone has a few hours
>> this Saturday or Sunday and would like to help me stay alive, I'd sure
>> appreciate it. :-)
On Tue, Sep 25, 2012 at 10:03 AM, <Scott.Kovale...@gmail.com> wrote:
> I think I can free up some time this weekend to call the ambulance when
> you electrocute yourself. I will put out some feelers with my grad students
> about cat5 wire as well.
> Let me know when you would like to work this weekend.
> On , Brad Collette <shopinthewo...@gmail.com> wrote:
> > I've started wiring up the encoders on the mill and hit a snag. The
> original wiring in the X-Axis (the one that moves) was replaced at some
> point. Whoever replaced the wire did a really crappy job and I'm trying to
> do a slightly less crappy one. I need a source for shielded/stranded cat5
> wire. I need at least 4 pairs (8 conductors) and only about 30'. All the
> suppliers in town, if they can get it, will only sell 1000' rolls.
> > Anyone know a creative source?
> > Also, I've got a pretty good handle on the control side of the mill but
> the high power side still has me intimidated. If anyone has a few hours
> this Saturday or Sunday and would like to help me stay alive, I'd sure
> appreciate it. :-)
Brad I have about 24 feet of 15 conductor, Shielded, grounded, Low voltage
computer cable that is stranded. You are more then welcome to it if you
like. I scrounged it out of a serial connection to a AS400 some years back
just in case I needed some good high quality cable. I work in columbia and
live south of Jeff if you want to meet up to get it.
Carl
On Tue, Sep 25, 2012 at 10:11 AM, Brad Collette <shopinthewo...@gmail.com>wrote:
> Awesome! Thanks. Best time for me would be anytime Sunday.
> On Tue, Sep 25, 2012 at 10:03 AM, <Scott.Kovale...@gmail.com> wrote:
>> I think I can free up some time this weekend to call the ambulance when
>> you electrocute yourself. I will put out some feelers with my grad students
>> about cat5 wire as well.
>> Let me know when you would like to work this weekend.
>> On , Brad Collette <shopinthewo...@gmail.com> wrote:
>> > I've started wiring up the encoders on the mill and hit a snag. The
>> original wiring in the X-Axis (the one that moves) was replaced at some
>> point. Whoever replaced the wire did a really crappy job and I'm trying to
>> do a slightly less crappy one. I need a source for shielded/stranded cat5
>> wire. I need at least 4 pairs (8 conductors) and only about 30'. All the
>> suppliers in town, if they can get it, will only sell 1000' rolls.
>> > Anyone know a creative source?
>> > Also, I've got a pretty good handle on the control side of the mill but
>> the high power side still has me intimidated. If anyone has a few hours
>> this Saturday or Sunday and would like to help me stay alive, I'd sure
>> appreciate it. :-)
Ah - I overlooked the "sheided" part! You can get shielded patches too,
though locally I'm guessing you're not going to find much.
The switchgear for the 3 phase can look intimidating but I'm guessing it's
pretty standard stuff. Sometimes you see multiple contactors when a motor
is wired for forward/reverse. Most of the time any switches/interlocks
operate on the contactors' low-voltage lines. If you're not getting
voltage to the motors, I wonder - is the contactor energizing (there should
be a loud "click!")? Also, here are some wiring diagrams from one of my
favorite websites:
http://wiki.vintagemachinery.org/Motor%20Starter%20Wiring%20Diagrams....
Fun stuff!
On Tue, Sep 25, 2012 at 10:09 AM, Brad Collette <shopinthewo...@gmail.com>wrote:
> I didn't think patch cables were shielded. I'm not sure how important
> that is though. I think thirty feet would probably rewire the whole
> machine.
> Re high power: The original wiring took 240/3 phase. Once in the
> cabinet, it split into a 3 phase 30A breaker for the spindle and single
> phase 20A for everything else. I'm replacing the 3 phase side with a VFD.
> I've done a temporary job wiring in the VFD and I believe it's putting out
> 3 phase power as expected. From the VFD (originally breaker) it runs
> through a series of fuses, contactors, and other protection devices before
> going to the spindle motor. I have juice coming out of the VFD but not
> going into the motor. Since I don't understand all the intermediate stuff,
> I'm lost.
> On the single phase side, It runs through different transformers to get to
> voltage needed for the servo amps. I've traced wires but haven't tried
> connecting anything yet for fear of frying something important or myself.
> On Tue, Sep 25, 2012 at 9:51 AM, Nathan Odle <nathan.o...@gmail.com>wrote:
>> Brad:
>> You can easily get the stranded stuff by chopping up patch cables. The
>> best online source I've found is Monoprice.com, but locally any of the
>> usual suspects (Best Buy, Staples, et cetera) have them. What you *don't*
>> want is the solid wire, which is what you'd find in premise wire meant to
>> go into walls. That would be the stuff at Lowes/HD and so on.
>> I also have a big spool of some nice stuff, if you tell me how much you
>> need I can probably hook you up.
>> As for the 'high power' side, do you mean the servo drivers? Those
>> usually aren't dangerous per se, but all the usual disclaimers apply
>> On Tue, Sep 25, 2012 at 9:41 AM, Brad Collette <shopinthewo...@gmail.com>wrote:
>>> I've started wiring up the encoders on the mill and hit a snag. The
>>> original wiring in the X-Axis (the one that moves) was replaced at some
>>> point. Whoever replaced the wire did a really crappy job and I'm trying to
>>> do a slightly less crappy one. I need a source for shielded/stranded cat5
>>> wire. I need at least 4 pairs (8 conductors) and only about 30'. All the
>>> suppliers in town, if they can get it, will only sell 1000' rolls.
>>> Anyone know a creative source?
>>> Also, I've got a pretty good handle on the control side of the mill but
>>> the high power side still has me intimidated. If anyone has a few hours
>>> this Saturday or Sunday and would like to help me stay alive, I'd sure
>>> appreciate it. :-)
> Awesome! Thanks. Best time for me would be anytime Sunday.
> On Tue, Sep 25, 2012 at 10:03 AM, <Scott.Kovale...@gmail.com> wrote:
> I think I can free up some time this weekend to call the ambulance when you electrocute yourself. I will put out some feelers with my grad students about cat5 wire as well.
> Let me know when you would like to work this weekend.
> On , Brad Collette <shopinthewo...@gmail.com> wrote:
> > I've started wiring up the encoders on the mill and hit a snag. The original wiring in the X-Axis (the one that moves) was replaced at some point. Whoever replaced the wire did a really crappy job and I'm trying to do a slightly less crappy one. I need a source for shielded/stranded cat5 wire. I need at least 4 pairs (8 conductors) and only about 30'. All the suppliers in town, if they can get it, will only sell 1000' rolls.
> > Anyone know a creative source?
> > Also, I've got a pretty good handle on the control side of the mill but the high power side still has me intimidated. If anyone has a few hours this Saturday or Sunday and would like to help me stay alive, I'd sure appreciate it. :-)
> Does Sunday at 1pm work for electrocution avoidance activities?
> Dr. Scott Kovaleski
> Associate Professor
> Electrical and Computer Engineering
> University of Missouri
> 349 Engineering Building West
> Columbia, MO 65211
> P: 573-882-8377
> F: 573-882-0397
> On Sep 25, 2012, at 10:11 AM, Brad Collette <shopinthewo...@gmail.com>
> wrote:
> Awesome! Thanks. Best time for me would be anytime Sunday.
> On Tue, Sep 25, 2012 at 10:03 AM, <Scott.Kovale...@gmail.com> wrote:
>> I think I can free up some time this weekend to call the ambulance when
>> you electrocute yourself. I will put out some feelers with my grad students
>> about cat5 wire as well.
>> Let me know when you would like to work this weekend.
>> On , Brad Collette <shopinthewo...@gmail.com> wrote:
>> > I've started wiring up the encoders on the mill and hit a snag. The
>> original wiring in the X-Axis (the one that moves) was replaced at some
>> point. Whoever replaced the wire did a really crappy job and I'm trying to
>> do a slightly less crappy one. I need a source for shielded/stranded cat5
>> wire. I need at least 4 pairs (8 conductors) and only about 30'. All the
>> suppliers in town, if they can get it, will only sell 1000' rolls.
>> > Anyone know a creative source?
>> > Also, I've got a pretty good handle on the control side of the mill but
>> the high power side still has me intimidated. If anyone has a few hours
>> this Saturday or Sunday and would like to help me stay alive, I'd sure
>> appreciate it. :-)
