Wade C
Stainless
- Joined
- Jul 21, 2004
- Location
- Wiggins CO. USA
'92 Mits DWC110-SZ - puts cutting power to the head as soon as "ready" is pushed.
Been fighting an issue with my 1992 Mits DWC110-SZ where upon pressing the "ready" button, it comes to life as expected, but then after about 1 second it shows almost 150V on the volt meter and the wire spool will wind up the wire, pull it out of the head, and will not shut off with the "pre-tension" switch turned off. I do not know what else it may or may not be doing as I didnt feel comfortable tinkering around with 150V to the head that I cant shut off without hitting the Estop or full power down. Checked it with a DVM and am getting 144VDC between the head and the table.
I was told there are supposedly 3 different safeties in the system to keep this from happening. It was suggested to me to swap out the two main power units in the back half of the cabinet, then if that didnt work, the DC unit directly below it, and then if that didnt work, the card rack with the SIFA, MNTA, and MRAA boards. I have tried all the above and it still does it. But the parts I swapped in, though they were supposedly good, I dont have verification of that. (they are from a donor parts machine I have). Though I would find it odd to have a second parts machine that has the exact same issue as mine is having.
Im sort of out of ideas of what to try shy of calling in the tech so he can do some one on one time with the machine. Any thoughts of something that may be the culprit here? I have a decent amount of spare cards, racks, and units from parts machines - so there is at least a chance I have a spare on hand, if I knew what I should swap out.
Any thoughts or advise is appreciated.
Thanks!
Been fighting an issue with my 1992 Mits DWC110-SZ where upon pressing the "ready" button, it comes to life as expected, but then after about 1 second it shows almost 150V on the volt meter and the wire spool will wind up the wire, pull it out of the head, and will not shut off with the "pre-tension" switch turned off. I do not know what else it may or may not be doing as I didnt feel comfortable tinkering around with 150V to the head that I cant shut off without hitting the Estop or full power down. Checked it with a DVM and am getting 144VDC between the head and the table.
I was told there are supposedly 3 different safeties in the system to keep this from happening. It was suggested to me to swap out the two main power units in the back half of the cabinet, then if that didnt work, the DC unit directly below it, and then if that didnt work, the card rack with the SIFA, MNTA, and MRAA boards. I have tried all the above and it still does it. But the parts I swapped in, though they were supposedly good, I dont have verification of that. (they are from a donor parts machine I have). Though I would find it odd to have a second parts machine that has the exact same issue as mine is having.
Im sort of out of ideas of what to try shy of calling in the tech so he can do some one on one time with the machine. Any thoughts of something that may be the culprit here? I have a decent amount of spare cards, racks, and units from parts machines - so there is at least a chance I have a spare on hand, if I knew what I should swap out.
Any thoughts or advise is appreciated.
Thanks!