Leadwell VMC25 ATC Trouble

[resuengineering]

I have a VMC25 with armless atc, controlled by a mitsubishi M50 control.

the whole machine was empty of parameters,
i reset it all by hand, but now how to reset the ATC???

i wrote the 9001 program for it, and linked it with m6
when i want to auto change tool, it goes to 1st ref point, orientates....
atc is coming under spindle, tool unclamp.
z-axis goes to 2nd ref point, atc starts rotating CCW endless....
doesnt find any tool....

do i need to reset the table or set a zero point.....

please help

[EPTech]

Hi,

I own the exact same VMC from Leadwell. Maybe I can help. I will check my manuals to see if I can come up with some answer. We should get in touch to exchange ideas. I recently bought a servo controller (MDS-A-SVJ06) on ebay. I am going to try to attach my indexing table directly to the controller instead of the separate control box that came with it;

But coming back to your issue. The current ATC position should be a register BYTE in the PLC in my language we call it a remanent marker. In other words something that is stored in non-volatile memory or backed up RAM. I am not sure if the actual address is referred to in the 9001 macro but it should be in the PLC program and one should be able to initialize it. I will look into it when I get back to my shop and will get back to you later.

[DSIF]

It sounds like one of 3 things may be wrong here.
1) A chip on the ATC prox switch.(Can not find #1)
2) The tool pot numbers in the ATC are not assigned in the parameters.(You may need ghost tool 99 in the empty spindle)
3) The 9000 macro is incorrect.
Mits controls are strange. Sometimes parameters have to be set in more than one place for a single function.
If all else fails,try calling Campat Machine Tool in Plano,Tx. and ask for the service department. Be aware that they stopped importing Leadwells with the Mits control many years ago. Only Fanuc now.
Good Luck-Dan

[resuengineering]

@eptech

this machine has also a extra mistu driver, i switched it down.
it is possible to use a driver and set an extra axes

mail me at resu @ draaitechniek dot nl

the atc program runs until G0Z30Z0
afther that the carousel keeps running to find the right tool.
but never finds it

--- ATC PROGRAM ---
O9001(ATC )

G4

T#20

G4P200

IF[#1000EQ1]GOTO4

IF[#1001EQ1]GOTO4

M66

G80

#131=#4003

#130=#4006

G91G28Z0

G49

N1IF[#1002EQ0]GOTO1

G30Z0P2

N2IF[#1003EQ0]GOTO2

G28Z0

G#130

G#131

N3IF[#1004EQ0]GOTO3

N4M67

M99

%

[resuengineering]

i now know i need to set parameter R1984 but noway i can set it

when i goto PLC I/F and set R1984 with data 0007 nothing happens
all other formats give a E01 setting data wrond.

do you need to set some other bits???

[EPTech]

Sorry it took me so long to get back to you. Holidays you know.

In order to change anything on the PLC level, you need to stop the PLC program. You can do this on the machine interface itself but the easiest way is to open the display panel on the PLC itself and set the DIP switch to 1 if I remember correctly. The nice thing about the MELDAS controls is that one can fully program the PLC from the interface.