Need Help!- emg alarm

[Asfar]

Please help me how to solve this problem.

two days before our machine start to show emg alarm. still i could not find what is the problem there? please tell me your advise...
we check all relays and fuses, some power lines.. we dont understand what happening there...
no any reaction there. while machine switch on, just only show emg alrm

waiting for your reply thanks.
asfar
Sri Lanka

[fordav11]

it can be 1000 things.
did it happen while the machine was running in auto or at the start of a new day when powered on?
which machine?
which control?

[Asfar]

thanks for your reply,

actually it happend at the start of new day ( not in auto run). it is fanuc control and Mori seiki sl 35 model cnc lathe machine

Originally Posted by fordav11 it can be 1000 things. did it happen while the machine was running in auto or at the start of a new day when powered on? which machine? which control?

[underthetire]

Could be overtraveled, could be someone hit the estop button on the chip conveyor emptying the chip bucket, could be a power supply. Is it a flashing emg or solid emg on the screen?

[Asfar]

thanks too
I think it is a solid emg..
no any alarm message in the crt scree, but emg only show. Hydrolic unit working okay.

Originally Posted by underthetire Could be overtraveled, could be someone hit the estop button on the chip conveyor emptying the chip bucket, could be a power supply. Is it a flashing emg or solid emg on the screen?

[fordav11]

try checking the bank of 24v relays next to the yellow control boxes or the 24 volt input. its some kind of power-related fault because the control can't diagnose the error (no alarm). We've had the exact same fault on our Moris a few times and it was fixed pretty quickly. I don't know the solution though, our Fanuc repair people are very secretive. obviously they want to protect their income

[underthetire]

A solid EMG means either a pushbutton, or travel limit. This indicates a break in the Estop chain. Can also be caused by incorrect parameter settings on the PMC side.

[fordav11]

it happened on our Moris exactly the same way, power on at the start of the day. he said the same thing so its assumed the machine was working the previous day when powered off. meaning nothing was touched or moved so it cant be a pushbutton or limit switch or a changed parameter. it seems to be a fairly common fault on older Moris at least. there are a few other posts on this forum with the same EMG fault

[Asfar]

thanks for your comments, still my emg problem is not solve, tomorow i will share with more information regarding the matter. I wish you would help me furhter more..
regards
asfar

[abk]

check your interlock module,
check your limits switch over travel,
check your magnetic contactor for ready on machine.

[spawn_818]

check for fuse for the manual control,and the relays,this happen also in our fanuc,we just check the fuse for control panel hope it will help a lot.