RJ3 Controller not turning on

Ruts Ertfeld · August 30, 2021 at 2:30 PM

Hey,

I have a Fanuc RJ3 controller, that I am unable to get to work.

I have very little experience so please excuse me if I have made some stupid mistakes.

Details:

Main board serial: A16B-3200-0330

Side panel serial: A20B-2100-0470

The PIL led on the PSU turns green when I flip the breaker on (Picture 1).

The controller has a broken mode selector switch, so the CRT7 connector that connects the selector with the board is disconnected (Picture 2).

All breakers seem to be in working order.

Does the mode selector need to be wired for the controller to turn on or is the problem somewhere else?

Picture 1:

https://ibb.co/tPkST82

Picture 2:

https://ibb.co/wST3wxL

Picture 3:

https://ibb.co/5x85vWs

Thank you for your time!

Sevastopol1 · September 2, 2021 at 4:17 PM

You don't need the TP mode switch connected to get the system to power up.

You might have an issue in the ON/OFF circuit. On an R-J3 the components included would be the switches, cables to the panel board, panel board, cable to main board, main board, backplane and the power supply. It routes through nearly every controller component.

TBOP2 needs a jumper between terminals 3 and 4. This is your connection for an external OFF button. It needs to be shorted for the controller to power up. Your photo shows no TBOP2 connector in place.

If you still have issues after that, on the PSU short pins A1, A2 and A3 together on CP4 to simulate pressing the ON button. If the controller boots up then you know one of the other components mentioned is an issue.

Ruts Ertfeld · September 3, 2021 at 4:36 PM

I dont know if im dumb or blind, maybe both, but I just cant find TBOP2 anywhere.

Sevastopol1 · September 7, 2021 at 8:29 PM Best Answer

The smallest of the three orange connectors, on the upper right side of pic 2, running vertically. Sticker next to it on panel shows terminals 3 and 4 are for external OFF.

Ruts Ertfeld · September 9, 2021 at 10:38 AM

That worked!

Thank you for your help Sevastopol1 !

RJ3 Controller not turning on

Werner Hampel August 30, 2021 at 2:45 PM

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