Beckhoff I/O Lightbuss Coupler BK2000

[sam_sam_sam]

Has anyone work on one of these units before BK2000 ?

Or

A Beckhoff KL2488 8 Channel Output Module ?

Here is the problem I am having with is machine is that I am getting an light-buss error undefined
meaning that unknown problem but if you power down the machine and power it back up It might work for awhile and then the same thing may happen two or three time that day or the next day

Now the Beckhoff KL2488 8 Channel Output Module the LED indicators light for each channel that are lighting are very dim all the time I do not know if this mean any thing or not

[Khron]

Re: Beckhoff I/O Lightbuss Coupler BK2000

Would it be a terrible idea to... i don't know... crack'em open and look for visual clues?

[sam_sam_sam]

Re: Beckhoff I/O Lightbuss Coupler BK2000

I bought a use one of these off of eBay $20.00 Beckhoff BK2000 for me to see what is inside of one I am also going to buy one of these as well from eBay 2@ $20.00 Beckhoff KL2488

I might be able to see if it is a power supply problem or not because two of the servo drives on this same machine have already been recapped because of drive errors

Once recapped those errors have not come back so far but it has two more drive that have not been recapped but we have a spare drive for me to have time to recapped one at a time

Now this machine is about 12 years

[sam_sam_sam]

Re: Beckhoff I/O Lightbuss Coupler BK2000

Would it be a terrible idea to... i don't know... crack'em open and look for visual clues?

The problem is that this machine is used all day and every day
It is very hard to shut it down to do this -- this is why I am buying used one to see just what is in side of it

Last week I had to shut it down 1.25 days and with that
we became three days behind for work on this machine

I wish I could do that it would be easier

For unrelated problem ----->

[Khron]

Re: Beckhoff I/O Lightbuss Coupler BK2000

For 20$ a pop, why not just replace them outright? I mean, surely a day of downtime's gotta be worth WAY more than that...

[sam_sam_sam]

Re: Beckhoff I/O Lightbuss Coupler BK2000

For 20$ a pop, why not just replace them outright? I mean, surely a day of downtime's gotta be worth WAY more than that...

Here why I can not do this is because the servo drive that I was talking about that we have spare one that cost $1500.00 and it has priority firmware in the drive you just can not get one off of shelf from eBay or PLC Direct let say for $800.00

Which I try to do and found out that it has priority firmware for the company that make the machine

And who know if this is not the same way

[sam_sam_sam]

Re: Beckhoff I/O Lightbuss Coupler BK2000

For 20$ a pop, why not just replace them outright? I mean, surely a day of downtime's gotta be worth WAY more than that...

It may or may not see why above
But when I get them I am going open them up and see what shape they are in first then
I going to install them and see if it will work or not

Now on the servo drive controller it has two board one is the power board you can change them around and they will work the second board is the controller with the firmware and that can not moved around

I am hoping that this will be the same kind-a-thing where you have a power board and a controller board

[sam_sam_sam]

Re: Beckhoff I/O Lightbuss Coupler BK2000

On this tread post i ask if and one use ether of these units
TOTX170A or TORX170
https://www.badcaps.net/forum/showth...120#post686120

After looking at the data sheet I am going to make a fiber optic cable tester from some of the part out of the BK2000 that I bought off of eBay
I already built the tranmiter board and it works good now I have to build the reciver board then I can check all the fiber optic cables on this machine has and go from there

Here is a photo of the power board of the BK2000

I have a question about the surface mount caps on this board do these caps go bad often ?

[sam_sam_sam]

Re: Beckhoff I/O Lightbuss Coupler BK2000

It may or may not see why above
But when I get them I am going open them up and see what shape they are in first then

I am hoping that this will be the same kind-a-thing where you have a power board and a controller board

There are three boards in this BK2000
Power Board
Controller Board
Optic Sensor Board

Here is a photo of trasnmiter board
The receiver board I will build to tomorrow

[sam_sam_sam]

Re: Beckhoff I/O Lightbuss Coupler BK2000

Here is the pin out on this board from left to right

(+5v ) (-)(unknown) (+5v) (-) (+5)

The reading on the 5 volt rail are very satable at 5.25 on each one

[sam_sam_sam]

Re: Beckhoff I/O Lightbuss Coupler BK2000

The receiver board I will build to tomorrow

Well I made the board and went to power it up with 24 volts instead 5 volts
It light up like a chirstmas tree
I had it adj for the power board on the BK2000

I had looked at so many data sheets that I forgot that this was 5 volts
Not a very good mistake i was not feeling very good about doing this
It been awhile that I hav done this type of mistake o well

I bought two more of the BK2000 hopefully I do NOT make the same mistake agian the TORX170 are new from a company in China for $53.00 and the BK2000 which has this part in it cost $21.00 plus $7.00 shipping

[stj]

Re: Beckhoff I/O Lightbuss Coupler BK2000

show some good foto's of the boards in this thing.