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Go to the Maintenance screen and submit the whole alarm; typically there are a set of parenthesis with additional letters and number to the right of the 31 servo malfunction 1?

Chippy

Those look like feedback cables. With the number of wires that you have in the cabinet and the length of those cables it was necessary to shield those cables to frame ground. If you were getting some...

Try moving the cable going from zy to mill spindle too Main Spindle to Servo Power in your diagram. See if your problem moves with it with Emergency. Hopefully the cable is long enough.

Chippy

Its actually Ab the letter "b". What you see is not good. I'm wondering if you have a short or this is our problem. When you power up the machine without the CNC "Ab" is normal. No display is not. ...

Look further down in the CNC section. You will find Mazak there.

Chippy

Pin 6 on DB-25 DSR Data Set Ready should be going to pin 14 DTR on the DB-15
Pin 20 DTR on DB-25 should be going to Pin 13 DSR on DB-15
Pin 1 & 7 on DB-25 Frame GND and GND should be going to Pin 1...

When the problem presents itself try only reseating 1 cable at a time and power up until you narrow down which one it is.
Right down the sequence for which you took to keep track.

The next time...

Is your problem resolved? Typically the drive which has the fault will display a different code then the other drives.

For instance F1 mean 1st axis then alarm code may show 22 or E7 which means...

Ivan,

Please show me the next screen as you suggested.

Chippy

Jeverts,

Any luck with your problem?

Chippy

Doolie;

Try going back to the Mitsubishi website. You will have to register to get to the area that you need to be in to get info. for Magic 64. Registration is free.

After registration logon...

Dear Ivan; no problem to post.

Chippy

Ivan, search under posts by me. I uploaded parameters for your machine just didn't know how to attach to this thread.

Chippy

Citizen L16 Parameters

Chippy

Thx Scotty for clarifying you are very much correct on the NL versus NLX both are Mits.

Chippy

Try powering down again and reseat cables only on Spindle labeled "Second Drive" and "Mill Spindle" then power back up. What is rotary switch on CV unit "Servo Power" set too?

Typically the Mitsubishi system and machine parameters are stored on EEPROM. The Citizen specific parameters and user parameters you will need to get from Citizen. These maybe the PLC related...

Has anyone worked on this machine recently? The buss cables are a mess.
I can see there is a terminator on the Main Spindle. But where the buss cable begins coming from the CNC and how they are...

I believe the control behind the scenes on the "X" version is a Mits. versus the non "X" version is F-control

Chippy

Try powering down and re-seat all drive buss cables that are daisy chained from one drive to the next. If no luck then take a picture of the maintenance screen and the electrical cabinet and post it.

What letters do you have on the MDS-C-CV power supplies?

Chippy

Double check the spindles as I think the emergency stop is related to both spindles drives. Do both spindle have E7? Should be MDS-C-SP type spindles or MDS-B type. The F number designated the drive...

Take a look at the drives display. What do they have on them? If not E7 which means emergency stop then the drive that has something different such as letters or numbers has the issue. For instance a...

Try disconnecting motor leads A and B and power back up. Also check to see if there are any LED's on DU unit which supplies P & N to the drives.
When did this begin; Overnight? The alarm your...

Thanks Mat, yes the pressure switch is registering on the monitor screen. Bit X33 is the one I believe. The pressure switch is normally closed. When the bit X33 changes state from a 1 to a 0 it...

This is a career ender here.

When I turn the machine on the relays in the back chatter. Specifically EMGB, EMG1 and EMG2.
Alarm 128 emergency stop comes up eventually.

24 volt NC voltage and...

Also check to see if there is a gear selection. If it thinks it is not in gear then you will get this alarm too.

Regards,

Chippy

Before Reinit, try typing over the one parameters that seems to be affected or every parameter you have and power off and on. You may even re-burn the EEPROM also before power off and on. This may...

On some of the Mazak machines there are hidden macro programs that control the tool change or turret. Did you ever loose parameters or have to re-init this machine?

You can access these by going...

Philabuster,

Thanks again for looking

Chippy