Need Help!- T-4 Parameters reloaded - now not working

[serickson]

Our Dual-Turret Slant-30 with Mazatrol T4 control (YT4B) had memory battery go down, and we lost all parameters.

I used Mazak Service Bulletin 0989-002 "How to re-initialize a T2\3 Control". I had called Mazak to see if they had a service bulletin specifically for the T4 Control, but they did not find any, or at least did not call back. So the T2\3 procedure seemed to work OK.

I hand-loaded all the parameters (I have done this multiple times), verified no mis-typed entries, and then operated the control.

The problem occurs during homing. I home the Z axis, all looks good, then home the X axis. As soon as that home is completed I get "Error 102: stored stroke limit -X1". Same results if I do X axis first then Z - error msg comes up after both axes are homed. The same type error occurs (except now -X2) when homing the lower turret system.

I have cleared all stored programs, and tool data.

It seems like I am violating some software travel limit, but I have gone through what manuals I have, and could not find anything that looked close.

Anyone got any ideas?

Thanks,
Steve

[Al_The_Man]

What about the chuck barrier page?
Not sure if the T4 has it.
Al.

[serickson]

I am the electronic tech here, not a machine operator, so I have limited operational knowledge of this system, as it was just turned on after several months of non-use.

Anyway, my shop sup turned off both chuck barriers, but we still get the same error about stored stroke limit.

Steve

[onthebumper]

The manuals are difficult to tell what each meaning is but you can try these parameters.

Turret 1 stroke limit
BA1 (P1-X)
BA2 (P1-Z)
BA3 (P2-X)
BA4 (P2-Z)

Turret 2 stroke limit
BB1 (P1-X)
BB2 (P1-Z)
BB3 (P2-X)
BB4 (P2-Z)

[serickson]

Thanks for the suggestion. I'm just leaving for the day, but will try them 1st thing tomorrow.

Steve

[serickson]

Originally Posted by onthebumper The manuals are difficult to tell what each meaning is but you can try these parameters. Turret 1 stroke limit BA1 (P1-X) BA2 (P1-Z) BA3 (P2-X) BA4 (P2-Z) Turret 2 stroke limit BB1 (P1-X) BB2 (P1-Z) BB3 (P2-X) BB4 (P2-Z)

Bumper,

I can not find those fields on any of the parameter pages, including the hidden ones. What am I missing?

Steve

[onthebumper]

Looking at my control it looks like the manual and the control are slightly different.

BA1 is actually B1 HD1 (Head 1)
BB1 is actually B1 HD2 (Head 2)

[serickson]

Bumper,

You pointed me in the right direction, and I found my error. I had missed the negative sign for several entries, and after correcting that mistake, the system now homes without the errors.

Thanks

Steve E

[onthebumper]

Glad to hear it worked for you!