Triac zero problem

All info relating to the Denford Triac series of CNC milling machines

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Fat Harry
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Triac zero problem

Post by Fat Harry » Tue 22 Apr , 2008 11:36 am

We have a 1986 Triac which is refusing to zero in it's Y axis !
Anyone have any ideas as to why this is & what a cure might be?
Many thanks !

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bradders
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Post by bradders » Tue 22 Apr , 2008 16:13 pm

Have you any more details?

Is it a Fanuc control or a Denford ?

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Fat Harry
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Post by Fat Harry » Tue 22 Apr , 2008 17:33 pm

Denford, I think its a North east computers sourced unit.
Controls very similar to a Newing & Hall PN4E we used to have.

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bradders
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Post by bradders » Wed 23 Apr , 2008 7:09 am

Is the axis moving at all ? does it attempt to Home? if so it could be the sensor or the wiring that is faulty
Last edited by bradders on Fri 25 Apr , 2008 9:22 am, edited 1 time in total.

Matt
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Post by Matt » Wed 23 Apr , 2008 10:26 am

I often get strange problems like this and it usually comes down to a loose wire. Normally on the large connector block where the wires from the circuit board connect with the wires that go to the drives etc. When you open and close the box all these wires flex and sometimes give you a bad connection, and the machine acts like its all over! Move the wires and all is back to normal till next time.

Worth a look.

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Fat Harry
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Post by Fat Harry » Wed 23 Apr , 2008 13:22 pm

Thanks for all suggestions !
I have this morning swapped the X & Y drivers over & now the Y axis will zero & the X axis not, so it's pointing at a fault in the driver.
Anyone know if the drivers are still obtainable or of a circuit board repair service ??

Cheers, Neal

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Fat Harry
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Post by Fat Harry » Thu 24 Apr , 2008 11:44 am

I have tracked down these people,
www.vectis-systems.co.uk
Who will repair the driver for about £115, hope this may be of some use to anyone needing this kind of repair.

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bradders
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Post by bradders » Fri 25 Apr , 2008 9:24 am

Out of interest do you know who manufactured the drive ?

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Fat Harry
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Post by Fat Harry » Mon 28 Apr , 2008 17:40 pm

Its a Parker Digiplan SD 2 driver !
Now repaired with faultless service. :)

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bradders
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Post by bradders » Tue 29 Apr , 2008 6:35 am

Glad you are now up and running

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