Re: [Emc-users] What does these do?

2013-10-04 Thread Sven Wesley
2013/10/3 Sven Wesley svenne.d...@gmail.com


 2013/10/3 Dave Cole linuxcncro...@gmail.com

 Probably braking resistors for the spindle.   The resistors are
 connected across the 3 phases of the motor to bring the motor to a rapid
 stop.

 Looks like they are wired in a Wye or Star connection..One center
 connection and the three phases which probably connect to a contactor
 which is connected across the motor during rapid braking.

 Dave


 I got an answer from a service company that is specialized on these
machines. They are braking resistors for the servo's, that's why there are
nine of them (three for each motor). You were close Dave. :)
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Re: [Emc-users] What does these do?

2013-10-03 Thread Sven Wesley
2013/10/3 Dave Cole linuxcncro...@gmail.com

 Probably braking resistors for the spindle.   The resistors are
 connected across the 3 phases of the motor to bring the motor to a rapid
 stop.

 Looks like they are wired in a Wye or Star connection..One center
 connection and the three phases which probably connect to a contactor
 which is connected across the motor during rapid braking.

 Dave


I think you are correct Dave, I have no electrical schema but with the tiny
bit of information I can find in the old manuals these are for the Bosch
system and the spindle motor is controlled by one of the Bosch modules. I
think these wires went to the ASM module, got to check that up. Maybe I
need to get them back in the system again, I need to figure out how to get
the motor to a complete stop without burning my VFD (and how to crawl to a
known position for a tool change).

Oh, BTW. I document my retrofit with images as much as possible. Mostly to
help others jump the bridge. You can find the images here.
http://bit.ly/GAwTyg
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[Emc-users] What does these do?

2013-10-02 Thread Sven Wesley
Power up brakes?
There were nine of these at the power source side in the mill I am
retrofitting. They are grouped in three. I guess they have something to do
with the power-on process. Or energy dumping when stopping the spindle.
On top of that I have no idea why they are connected like this.

Please enlighten me!
Sven
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Re: [Emc-users] What does these do?

2013-10-02 Thread Sven Wesley
2013/10/3 Sven Wesley svenne.d...@gmail.com

 Power up brakes?
 There were nine of these at the power source side in the mill I am
 retrofitting. They are grouped in three. I guess they have something to do
 with the power-on process. Or energy dumping when stopping the spindle.
 On top of that I have no idea why they are connected like this.

 Please enlighten me!
 Sven


Would be so much easier if I added the images...
http://farm8.staticflickr.com/7454/10060787165_14d7c48292_b.jpg
http://farm8.staticflickr.com/7343/10060783435_454908a156_b.jpg
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Re: [Emc-users] What does these do?

2013-10-02 Thread Dave Cole
Probably braking resistors for the spindle.   The resistors are 
connected across the 3 phases of the motor to bring the motor to a rapid 
stop.

Looks like they are wired in a Wye or Star connection..One center 
connection and the three phases which probably connect to a contactor 
which is connected across the motor during rapid braking.

Dave



On 10/2/2013 7:47 PM, Sven Wesley wrote:
 2013/10/3 Sven Wesley svenne.d...@gmail.com

 Power up brakes?
 There were nine of these at the power source side in the mill I am
 retrofitting. They are grouped in three. I guess they have something to do
 with the power-on process. Or energy dumping when stopping the spindle.
 On top of that I have no idea why they are connected like this.

 Please enlighten me!
 Sven

 Would be so much easier if I added the images...
 http://farm8.staticflickr.com/7454/10060787165_14d7c48292_b.jpg
 http://farm8.staticflickr.com/7343/10060783435_454908a156_b.jpg
 --
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 Explore tips for MPI, OpenMP, advanced profiling, and more. Get the most from
 the latest Intel processors and coprocessors. See abstracts and register 
 http://pubads.g.doubleclick.net/gampad/clk?id=60134791iu=/4140/ostg.clktrk
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