Mazak ST40N alarm.
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  1. #1
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    Default Mazak ST40N alarm.

    So had a problem last night with our ancient ST40.
    When it powers up it comes up with multiple alarms.
    T32-2 control.

    202 HYDRAULIC PRESSURE DOWN (RED)
    203 AIR PRESSURE DOWN (RED)
    303 START COND. ERR,(EXT FEED HOLD) (BLUE)
    121 OVERTRAVEL (RED)

    On the control panel I have an NC alarm and MC Alarm
    The MC alarm comes on first.

    Inside the cabinet I have E7 Alarms

    Of course there is a rush job on this machine and I can't contact Mazak till Monday.
    Anyone give me an idea to where I should start looking?

    Cheers

  2. #2
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    I'm not familiar with that machine or control but I would guess all of those alarms could be caused by an overtravel condition....did the x axis maybe drift down or is it possible any of them have tripped a limit switch? If not maybe a bad limit switch. That is where I would start looking till someone with more knowledge than me reply's.

  3. #3
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    Hi,
    The overtravel is a strange one as the machine was parked in it's usual place.
    The hydraulics don't fire up in the alarm condition but I will try and manually turn the X Axis leadscrew see if I can get it to move.
    I've a feeling all these alarms are caused by some other underlying fault.

  4. #4
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    Check the parameters and see if you have anything funny going on like a bunch of asterisks *** in there. The only time I ever see hydraulic pump not turn on is when the parameters get corrupted due to a low battery.

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    How long has the machine been sitting? If batteries have gone flat and parameters lost you may need to do a re-initialise. Check parameters as has been mentioned before anything else.

  6. #6
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    Parameters all seem fine.
    Breakers that drive the hydraulics etc are not pulling in.
    Just waiting for Mazak to call for when they can get an engineer out.


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