Hi All,
This is my first post but I have lurked Practical Machinist for years.
I hope to find someone with Mitsu 64 experience, that can and is willing to help me out. I have an issue with tool change out routine on a mill that is new to me, and actually quite new hour wise (300) total hours when purchased, but not new age wise.
- Details about the Mill
- Akira Seiki ProformaJR
- Carousel-Umbrella tool changer
- BT40 Taper
- Meldas 64PLC
*Here is the issue I am having.
The Mill will lock out randomly when attempting to do a tool change out.
ERROR/ALARM #2074 H/W OT+
~verbiage- Head down error (I think)?
What randomly means: When the M6 command is given (manually or automated) Z proceeds to a 0 tool change height, umbrella successfully picks tool from spindle, spindle retracts to +4.33 and this is where it gets random.
It could stall out in that position, umbrella out, spindle at pick height. (requires M53 send umbrella home and hand place tool)
It could pick the next tool and the umbrella will go to the home position, and stall in that position, with umbrella home, correct tool picked, and spindle at 0 height. (only requires reset)
Other Randomness is, you can get 10, 5, 6 (pick a number) completed successfully (manually or automated), but then you can't get it to do 3 in a row, meaning you will have to deal with the error back to back times.
I have bounced this off a couple of people that have like tools, their recommendation was to check limit switches and flags. Which I have done, the limit switches are working smoothly (especially now). That being said, when trying to diagnose this issue, I noticed the flags don't even come into play during a change out routine. First Flag is realized at about +5.44 and tool change out height is +4.33.
I have poured over the book and there really isn't any information for #2073 #2074 and #2075 other than this is a place holder for a switch that the manufacture may choose to use and it needs to be set correctly.
When in the set up screen for those addresses there are "00" on all axes. I don't know if there is supposed to be something there, and if so what it would be. The Orig. set up log shows those settings at "00".
Tool history
Donated new to Technical School 2003 used for 2 years gaining 300hrs. Teacher who could use it left.
Mill sat in off position until 2008. New teacher tried to restart mill but battery had died and lost the program. School tried to hire someone to get it going which was unsuccessful due to a bad base load.
Mill sat until December 2015 when I purchased. Program was wiped with help, correct was installed with help.
I have been using it for about 3 months, other than the 2074 error it works flawlessly, great machine! Makes my Tormach look like toy.
I personally am comfortable manipulating everything but the Ladder, I haven't been in there without help.
Thanks in advance for anybody that takes the time to help
KC
