Alarms 1008, 401, 414 & 424

[Emimec]

Cylclone, with a Fanuc OT control. Was running ok, no problems to worry about.

Due to our centre lathe having the tailstock repaired, I needed to centre a piece of nylon quickly, so I thought, "I know, I'll use the CNC". I am not the setter or programmer of this machine, and my man who does know, was not around.

Switched machine on, homed it all ok, put it to MDI, wound the saddle and slides to a rough position, then I realised I do not know enough to even get the spindle to rotate in manual, or the reference for the centre drill to be on centre, so gave up. I think I put it into auto, to get it to go back to the start, or tried to home it again, cant remember.

Now I have a collection of alarms:

1008 Spindle drive fault
401 Servo alarm (VRDY OFF)
414 Servo alarm X axis detect error
424 Servo alarm Z axis detect error

Reading the Fanuc book, it tells me these errors are recorded in DIAG 720 & 721. When I view both of these, I have 00000100 in both lines, parameter lines 720 and 721 both =0

I cant get anything to move now, so cant re home it, and the saddle is very close to the chuck.

I have now been banned from touching the machine in future !!!

Any help most appreciated on how to get back up and running most appreciated.
Bob

[Martin]

It could be a curcuit breaker that has tripped or sat on a axis limit switch.

If it's on a limit switch then there should be a button labeled axis limit overide switch or similar. It should be on the side of the rear electrical box or on the side of the control panel. If it is this then press & hold the switch & home both axis before releasing.

It may be worth checking the curcuit breakers in the electrical box & cabinet. I think most of the breakers are fitted in the black transformer box that sits at the side. Just check none have tripped.

[Emimec]

Many thanks.
I did a quick check of the breakers, but will go back for a closer look.
The axis overide will not let me do anything.
Bob

[Emimec]

Hi
I have looked for any breaker that could have tripped, but cant see anything obvious.
I have managed to wind by hand the belt to allow the carriage to move away from the chuck. The turret will rotate if I use the position knob on the front of the machine.
Holding the over ride switch does nothing and I can not home the machine.
Screen says "Not ready" as well as the other stated alarm messages.
Any offers of a solution most welcome.
Bob

[Martin]

How about checking Parameters 544 and 545 (They should both be zero)

viewtopic.php?f=33&t=3135&hilit=collision

[Emimec]

Many Thanks.
I will check this out tomorrow. Curious as to how you are pointed to these parameters, my Fanuc book doesnt really help other than that on the first post, unless I didnt read it properly.

[Martin]

I don't think they are in the books. They are collision detection parameters X & Z axis. They should both be set to zero. If it detects a collision then it save a value in the these parameters which causes the axis to jump on power up which is then detected as deviation alarm.

[Emimec]

Hi
Nope, didnt work, my parameters are at zero.

I'm at a toal loss with this...........................
Bob

[Emimec]

I'm hoping this is something silly and simple. I dont feel what I did should have caused such a problem ??

I'll check to see if all 3 phases are present tomorrow.

Which board controls the axis X and Z ?

Bob

[Martin]

It depends on which Fanuc control it is. If its a OTA then it could have a Fanuc drive or Norwin drives. With you saying you also get a

1008 Spindle drive fault

it is more likely to be something else. Diagnostic 21.4 is the E-Stop monitor. Is this a 1 ? There also may be a spindle drive overload curcuit breaker which may be worth checking. If you have one fitted it was normally fitted on the base of the rear electrical box. The early ones had a red pushbutton to reset.

[Lone_Ranger]

Bob

Have you checked the output of the low voltage power supply, I seem to remember that the 1008 spindle error shows when the low volt control voltage is down, means there are no voltages for the Fanuc to check at the axis limits and it checks things in a specific order.

Which can mean that the errors are there because the control hasn`t been able to check the items listed, not that they have been checked and there are a bunch of faults

Didn`t you have this once before and bought a new low volt PSU ??? Or was that someone else ???
Memory isn`t too hot these days, definitely "playing the age card" nowadays

Regards
Rob

[Emimec]

Hi
Thanks.
It was me. I didnt buy a new low volt supply, I soldered the crimped pins, and that seemed to cure my original problem.
I'll double check voltages tonight.

[Emimec]

Hi

Problem solved by looking back at old posts and the help given. Ran through the checks and found that wire 9 in the power box that lives on the floor had no power. It doesnt make sense though. When I tested for power on 7, 8 and 9 there was power on the screws in the contactor for all 3, but no power on 9 where it links to the contactor far left in the cabinet. Removed wire 9, checked it wasnt broken, replaced it only at the end that goes to the contactor on the right hand side. Powered up machine, and bingo, all lit up and worked, even though 9 was not connected to the left hand contactor ? Makes me think that the other wire that shares the contact on the right was not making contact, and my first reading on the screw was from the supply below, if that makes any sense???

Thanks to you and for Martins offer to call him and talk me through.

Bob