fanuc oi tc EMG

[abcdcba]

Hi
I have a yh-28 lathe with oi tc
it gives a emg alarm and it doenst go away and the emergency switch works normaly
I hope someone can help me

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[drdos]

Check X8.4 and G8.4. Both signals must be on to clear ESTOP

[abcdcba]

Check X8.4 and G8.4. Both signals must be on to clear ESTOP

Thanks for your response
x8.4 is on but g8.4 is off

[drdos]

Can you see what in the ladder is preventing G8.4 from coming on? You need to search for the coil in the ladder.

[abcdcba]

Can you see what in the ladder is preventing G8.4 from coming on? You need to search for the coil in the ladder.

Here is a picture

[zavateandu]

do you have a pdf document with your electrical diagram?
or open the electrical diagram and in 1 page should be the entire emergency circuit,make a photo and post it.

[abcdcba]

do you have a pdf document with your electrical diagram?
or open the electrical diagram and in 1 page should be the entire emergency circuit,make a photo and post it.

I dont have the diagram I realy dont kwon what to do

[zavateandu]

you should check with a voltmeter if you have +24v DC in the emergency stop buttons and on the limit switch for hard travel for all axes.One of these has an interrupt.

[abcdcba]

you should check with a voltmeter if you have +24v DC in the emergency stop buttons and on the limit switch for hard travel for all axes.One of these has an interrupt.

At the red emergency switch I have 24vdc betweer L and E when the switch is normal closed but at the limit switches it is not clear, there are 4 wires from 2 switches but none of them have 24vdc

[zavateandu]

show us a picture.If the limit switch is not pressed ,you should have 24v on it.

[abcdcba]

show us a picture.If the limit switch is not pressed ,you should have 24v on it.

The first picture is from the emergency switch, I have 24vdc between the red wire and 103
In the second picture 119 122 124 are coming from the hard limit switches and there is no 24vdc between any of them

[abcdcba]

show us a picture.If the limit switch is not pressed ,you should have 24v on it.

I dont understand what you mean with 24v over the switch
if it is a closes switch how can there be 24v on it ?

[zavateandu]

This is a standard Emergency circuit


you have the EMG push button than you have the overtravels 131,132 ,this is from a lathe so 2 axes limit switches,the +24v(L
+) goes in the EMG than goes to the switches and than in a relay and finally to L-.
So is like the christmas tree leds that are connected in serial mode.
all the contacts are normally closed so when 1 of these is open the 24V will not reach the relay so the machine will show alarm and NOT READY state.
the point is you must measure the 24V(L+) checking with the L-.
This is basic electric so i hope you understand it.
good luck.

[abcdcba]

This is a standard Emergency circuit


you have the EMG push button than you have the overtravels 131,132 ,this is from a lathe so 2 axes limit switches,the +24v(L
+) goes in the EMG than goes to the switches and than in a relay and finally to L-.
So is like the christmas tree leds that are connected in serial mode.
all the contacts are normally closed so when 1 of these is open the 24V will not reach the relay so the machine will show alarm and NOT READY state.
the point is you must measure the 24V(L+) checking with the L-.
This is basic electric so i hope you understand it.
good luck.

Thanks for your help man I finaly fixed it there was a wire not connected well

[awolfoutwest]

I am having the same problem, but my F45 will not come on

[jude_1511]

This is a standard Emergency circuit


you have the EMG push button than you have the overtravels 131,132 ,this is from a lathe so 2 axes limit switches,the +24v(L
+) goes in the EMG than goes to the switches and than in a relay and finally to L-.
So is like the christmas tree leds that are connected in serial mode.
all the contacts are normally closed so when 1 of these is open the 24V will not reach the relay so the machine will show alarm and NOT READY state.
the point is you must measure the 24V(L+) checking with the L-.
This is basic electric so i hope you understand it.
good luck.

Please resend the attachment, I am having similar problem

[phucrobusl]

Hi
i need help regarding 21i mb controller.On i/o card a20b-2002-0521/06A connectors CE56,CE57 i dont know on which pin number having *esp signal.
a1=24v,b1=0v i know that but other pins number which function it have i dont know can anyone help with this problem.

[drdos]

Hi
i need help regarding 21i mb controller.On i/o card a20b-2002-0521/06A connectors CE56,CE57 i dont know on which pin number having *esp signal.
a1=24v,b1=0v i know that but other pins number which function it have i dont know can anyone help with this problem.

The problem is these connections are variables. That mean it all depends on how the I/O assignments has been laid out. Fanuc states in this example:


Xm+0.0 M= starting address for this address. So if your starting address is X8 this pin would be X8+0.0 or X8.0
Hope that helps.

[phucrobusl]

The problem is these connections are variables. That mean it all depends on how the I/O assignments has been laid out. Fanuc states in this example:


Xm+0.0 M= starting address for this address. So if your starting address is X8 this pin would be X8+0.0 or X8.0
Hope that helps.

yes i think you are right but i dont know w to I/O assignment to do from X8.+0.could you please help me. rd181993@gmail.com.
thanks.

[LuisEVH]

Hi!!!
I have a similar problem with a Nakamura Tome TMC-12 Control Series 21-T, this machine was working well, until a technician came to check a vibration in the Z axis servo, apparently it loaded parameters and the machine did not return to work, I have a backup of the machine parameters, I reloaded them, no alarm comes out, but it is in EMG state, I can navigate the menus, but nothing else works (spindle, hydraulic system, turret , move the axes).
Hopefully someone can help me, best regards.