Need Help!- OMC - Changed Motherboard, now have more problems

[C-4]

I got the Alarm 930 a few days ago (Fanuc OMC). You could restart and it would come on for a few minutes (sometimes less), and then you would get it again. The maintenance manual said to change the master pcb, so I did.

Original board PN A20B-2000-0170/02A
New board PN A20B-2000-0170/06B


I had a backup of the NC parameters, However I did not know to back-up the PMC parameters so I do not know them. After entering the nc parameters, I get these alarms.

Opperator Message
EX451 Spindle Unit Alarm

Alarm
310 APC Alarm X Axis Need ZRN
320 APC Alarm Y Axis Need ZRN
330 APC Alarm Z Axis Need ZRN

I know the 310,320, & 330 will clear if you zero return. The problem is that I can't get out of MDI Mode. Is this due to not having the PMC parameters or something else? What about the EX451 Alarm, what would cause it? I know there was nothing wrong with the spindle.

Finally, can anyone help with the parameters? The machine is a Mori Seiki MV-55/50 w/Fanuc OMC, 30 tool atc.

Thanks

[tc429]

doublecheck your 900 parameters...905 has bits to enable pmc function, if its a serial spindle, check 921 bit 0 too (for built in mag sensor orient method), often missed as its the only one on the second page...

if its a analog spindle, make sure you moved that big gold colored chip from your old board- I think on the 170 board its half hidden under the power supply...thats the axis LSI used to control spindle, and as optional new boards wont have it installed, and without it there, the analog out will float to 2.2 volts, and seeing a reference without a command might cause trouble too- thinking about it, that might be all it is, as alarms can inhibit mode change...see if ladder exists by hitting the param key a few times, if its there, 905 is ok.


hope that parity issue stays away, memory pcb causes it often on early boards... if it returns, look closely at the single trace across top of eprom sockets and at artwork on back of memory board- that top trace goes 90% of the time, often the vertical traces on the back fail too...was not enough copper on those boards, most failures are artwork related...just a tiny blister in the clearcoat, but ohm check the trace it will often be wide open...

[gbowne1]

Just depends on weather you have the A16B-2201-0103 or -0101. I have the A16B-2201-0103 board. The A16B-1212 versions of the memory board are not surface mount like these boards are. Though the A16B-2201-0101 has a Serial Fibre optic and supposedly will work with the Alpha drives.

I looked at the 7 different Series 0 Model C masterboards and it all seems kinda confusing.. but I like the ones that offer more slots. The masterboards are not cheap.. so I had

Yeah I wondered about the 900 parameters but i hadn't gone through my O C manuals in a while.

Greg

[C-4]

I will check the 900 parameters again tomorrow. The ladder daigram will come up I know.

The original mainboard did not have the big gold chip partially under the power supply that you refer to. The replacement board did have it however. I left it in to start with and tried it, and when I could not get rid of the errors I took it out and also swapped out the removeable chip that is above it. I don't know what this chip is , but the original board had an EPROM, and one on the replacement board was not (It don,'t have the eye with a sticker over it anyway.) It didn't help with the errors though.

As for the memory board, it is A16B-1212-0216/03A. I'm not sure what series spindle drive it has. I do know that there is a small black cable that runs from the spindle drive to the bottom of this memory board.

Are all of the parameters in the screens labeled "parameter", or are some of the screens labeled "diagnostics" actually parameters? Are there any parameters or anything else that I need to set anywhere else?

Thanks for the help

[gbowne1]

Most of the Series 0 Model C controls I have seen have used the S (A06B-6058-Hxxx) or C amplifiers (A06B-6066-Hxxx). I don't know much about the B or A models.. never had those and I have a 0T-C and 0M-C I have to put together some day.

There are DGN parameters which are your diagnostic bits.

Which reminds me I wish I could find the book on the A16B-2201-0103 card. FANUC has manuals on some cards you might be able to get from FANUC. They were normally only relased to service centers. But they do tell more about the cards themselves.

If I'm right, DGN 300 starts the PMC diagnostics.

What is your CRT/MDI unit like? There's some minor differences. Unfortunately I don't know much about your masterboard.

You just have a different revision level of the masterboard, thats why there is some difference.

[ppascuzzi]

Originally Posted by C-4 I got the Alarm 930 a few days ago (Fanuc OMC). You could restart and it would come on for a few minutes (sometimes less), and then you would get it again. The maintenance manual said to change the master pcb, so I did. Original board PN A20B-2000-0170/02A New board PN A20B-2000-0170/06B I had a backup of the NC parameters, However I did not know to back-up the PMC parameters so I do not know them. After entering the nc parameters, I get these alarms. Opperator Message EX451 Spindle Unit Alarm Alarm 310 APC Alarm X Axis Need ZRN 320 APC Alarm Y Axis Need ZRN 330 APC Alarm Z Axis Need ZRN I know the 310,320, & 330 will clear if you zero return. The problem is that I can't get out of MDI Mode. Is this due to not having the PMC parameters or something else? What about the EX451 Alarm, what would cause it? I know there was nothing wrong with the spindle. Finally, can anyone help with the parameters? The machine is a Mori Seiki MV-55/50 w/Fanuc OMC, 30 tool atc. Thanks

Since it is an operator message it is created by the PMC ladder and most likely is due to not having the PMC parameters installed. You might be able to get a Mori dealer to send you a list of what the original parameters were or at least what they stand for. Without that information you'll have to find a very similar machine to get a copy from or some one will have to go through the ladder and electrical prints while comparing it to the physical machine to figure them out. (this last method can be very time consuming even with an experienced tech)

[C-4]

Checked parameters

905 bit 4 = 1
921 bit 0 & bit 2 = 1

It looks like its probably due to not having the PMC parameters though.
I guess I will contact the Mori Seiki dealer Monday and see what they say about getting them.

Another couple of questions also.
What is stored on the macro cassette (I think that's what its called)? The yellow box plugged into the top left of the mainboard. Would I have erased it too, when I cleared the memory?

[fordav11]

usually there's a couple of EPROMs in there containing the ladder. its safe, you cant erase it. I would make some effort to get those EPROMs backed up. if they go bad you'll have a serious problem trying to find a replacement which will end up in a service call from Fanuc resulting in some lightening of your wallet

[gbowne1]

Yeah, It should be ok. But like fordav said I would find a way to back up your EEPROMS in that cassette.

There are a couple different versions of the casette and you can get them on eBay. On my 0M and 0T Model C I bought extra cassettes (they were cheap) so I would have an extra copy if something happened to it.

I found Mori-Seiki can be pretty easy to deal with if you have the right information in hand.

The PMC parameters are important especially if you have the PMC-M installed.

[tc429]

the macro cassette(from what ive seen) only needs control booted once with it installed to load up macros to memory...leadwell *somehow* has the cassette load the 900's at bootup- if you change any 900 bits it changes them back...found by simply pulling the cassette out, changing parameters (leave cassete out permanently) everything worked fine. its possible some machines need the cassettes installed, but ive never seen any that didnt still work without them- just left it in the cabinet in case control ever got all-cleared.
even with the cassette, the ladder is still on 0E1/0E2 chips on the memory card for pmc-L, or on the pmc-M card if it has that option. Ive got the macro compiler software/manuals for my pg-mate, but never used it- couldnt see anything in the manual about the 900 parameter auto load- woulda been cool to write a generic boot cassette to bring up dead controls without going thru the settings to be able to use the laptop...

[C-4]

OK, thanks. At least I shouldn't have erased that. The reason I was wondering is that AUX. screens are different now. It used to just have two available, (tool & atc). Now there are four (tool, atc, work?, & apc). Also it doesen't show the right number of tools in the tool menu. I'm guessing if I can get the PMC parameters it will straighten this out (I hope)

[gbowne1]

Somewhere along the line someone may have changed them, or added and option that may have changed things some.

I never had problems with the 900 parameters.

I usually leave my cassette(s) plugged in.