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Mazak H400 spindle error

tarantoo

Plastic
Joined
Mar 10, 2019
Hello,

I'm new on this forum, so hello my friends :)

I just bought my new/old Mazak h400, and I'm having problem with machine, spindle wont turn, I get error that spindle is in neutral, and I can't get the machine to first or 2nd gear so it would start spinning. What could be the problem? I'm scratching my head for last few days with this problem... :cryin:
 
Hello,

I'm new on this forum, so hello my friends :)

I just bought my new/old Mazak h400, and I'm having problem with machine, spindle wont turn, I get error that spindle is in neutral, and I can't get the machine to first or 2nd gear so it would start spinning. What could be the problem? I'm scratching my head for last few days with this problem... :cryin:

PLC ( machine doesnt see proxy switches for HIGH and LOW gear) .you must check electrical drawing, find those inputs and then go to DIAGNOSTIC screen and see if they activated, when you change gear. You have to find valves that move connecting rod, check them, is solenoid coils are alright. And see somehow if there is any movement when you change gears/
 
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PLC ( machine doesnt see proxy switches for HIGH and LOW gear) .you must check electrical drawing, find those inputs and then go to DIAGNOSTIC screen and see if they activated, when you change gear. You have to find valves that move connecting rod, check them, is solenoid coils are alright. And see somehow if there is any movement when you change gears/

I put new valve for high low gear and new coils. and if I manually press valve I get reading on the screen changing from 1 to 2, and vice versa. How can I force the machine to put in any of those two gears?! Can this be related to tool change, because tool change also doesn't work. Thanks!

alarm list is: 281 - (SPINDLE START MISSOPER) - With the gear shifted to the NEUTRAL position, spindle started. Can be turn off by reset or cycle start.
236 LOW GEAR PROX OFF MALF - Low gear - proximity switch did not turn on for 20 or more seconds after being commandend.
 
Not trying to be smart but have you homed the machine?

lets do it again. Alarms on M32 from 200 are PLC alarms. 236 alarms is proxy alarm that aux shaft wasnt engaged properly. 281 alarm is obviously you cant start spindle without gears engaged.

tool change never gonna work cause spindle orientation isnt completed.

I am 105% sure that man put new hydraulic valve, and somehow swapped gears plugs, or valve is wrong type , or instead 100AC he but some other voltage valve. No details. Lets wait when he is back.
 
lets do it again. Alarms on M32 from 200 are PLC alarms. 236 alarms is proxy alarm that aux shaft wasnt engaged properly. 281 alarm is obviously you cant start spindle without gears engaged.

tool change never gonna work cause spindle orientation isnt completed.

I am 105% sure that man put new hydraulic valve, and somehow swapped gears plugs, or valve is wrong type , or instead 100AC he but some other voltage valve. No details. Lets wait when he is back.

I have 6 pallet changer that was not operational for years, and I took valve from there and replaced the valve because it was stuck. I plugged the same as chart says and I'm 100% sure is correct. Also I must say that after changing the valve we couldn't get spindle spinning but the problem was that the chiller wasn't online :rolleyes5: and after I turned on the chiller we succeeded to get spindle spinning that day (we could head some grinding noise like there is no oil inside gear chamber, but I filled to the top all oil spots that I could find by the help of the book). But the next day again at the beginning spindle wont turn on, it just wont put into gear. Also, homing works ok. I don't know, I think we'll just have to pay for specialist to come and spend big bucks to get it running :D
 
Hello again,

We had 2 people to come by, and non of them had any luck with my h400. My next question is, I had some wires disconnected from the machine in electric cabinet, I reconnected them but I'm not sure it it's correct, so I need your help with two wires blue & red, I took a picture what I mean. It would be very helpful if somebody could take the same picture of h400 so I could be sure if my wires match yours :)

test1.jpg
test2.jpg
 
I was going throughout the book 2 times, and I just can't find it in the book, or I'm to dumb for the book :/ Yeah.. I know it does not have anything with the spindle. Thanks for the reply
 
So.. this was my error with spindle not going into gears.. Now, I'm having a problem machine won't clamp, unclamp my tools when I turn the key, any thoughts?

 
Ok, here we go again, we had another specialist and cheked out the boards, fixed one, changed valve coil for tool change, and now I can manually clamp-unclamp tool. Now to my next few errors.. how to rotate table, how to clamp-unclamp pallet, when I go to MDA -> G-code->M19->input spinde doesn't orinet..

btw I run the machine on Mazatrol M2

Any help would be much appreciated.
 








 
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