Speed attained signal

[kenwalus]

I have a VA 45 with a micon 8. When I try to run a program all is good until I hit a M3 S2500. The spindle will start and run but the program will stop there. I think it is waiting for a speed attained or arrival signal. I believe N103 is that signal. The micon tells me that its stated is "0" when the spindle is running. I do not know where that signal is generated from. Can anyone please assist me.

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[shas595]

Hello,
does this VA have a high and low gear? What happens if you do M3S1000? Does it work then?
John

[kenwalus]

Thank you for responding. Yes there is a high and low speed. I have tried low speed 100 rpm's and high speed 2500 rpm's. Both have the same effect. If you try to do a single block, with each line of information in the program it will complete the commands and the green light above the start button will go out. When it does a speed command the light does not go out.
Ken

[shas595]

Ken,

What kind of spindle drive does this machine have. And is it getting (roughly) to the speed you enter and then pausing, or doing the same RPM no matter the command? There are a few different causes of this issue and I am trying to narrow down the possible solution.
John

[kenwalus]

Ken,

What kind of spindle drive does this machine have. And is it getting (roughly) to the speed you enter and then pausing, or doing the same RPM no matter the command? There are a few different causes of this issue and I am trying to narrow down the possible solution.
John

It is a Fuji Frenic 5000V2 FSD-7AR-22 spindle drive. It will go to the speed that you command and just sit there continue turning and wait. I tried taking the spindle out of the program and running the program. The entire program will run fine without the spindle, so that tells me the program is ok.

[shas595]

Ken,

good to know. Do you know your way around the Frenic enough to see what it thinks the spindle is turning at? Do you have the manual for it? I think normally the default display is the spindle speed, but you might need to navigate a little bit. I think you are right about the speed attained signal, but there are a few other things possible as well. How does the M19 work for orientation?

John

[kenwalus]

Good Morning John
I guess basic navigation around the Frenic. No, I do not have a manual. I will look at it and see what I can see. M19 does work, which says that the magnet is ok.

[kenwalus]

Good Morning John
I guess basic navigation around the Frenic. No, I do not have a manual. I will look at it and see what I can see. M19 does work, which says that the magnet is ok.

Hello John
Do you have any other suggestions?

[shas595]

When you give it the M19 does it remain at the position and not move at all, or does it slightly rock back and forth, even if its just a degree or two?

[Al_The_Man]

Just noticed this thread, I have had these faults in the past and many Spindle drives have a Up-to-speed and At-zero-speed outputs, these are relayed to the control through the PLC/PMC etc.
So when a M3 Sxxx value is used, it waits for the UTS signal before finishing the pgm block.
It can be the relay or transistor output on the drive.
Al.

[kenwalus]

When you give it the M19 does it remain at the position and not move at all, or does it slightly rock back and forth, even if its just a degree or two?

M19 works great. It goes home and stays, no rocking.

[kenwalus]

Thank you for the reply Al, . Do you remember which component was defective? I do not have any prints, so I would be shooting from the hip.

[Al_The_Man]

I was talking in general, I don't have anything on that particular make of spindle.
They were often small PCCT relays.
Al.