FlexPendant DSQC 679 stuck on booting

Brano

Recently I got hands on pendant DSQC 679 in our company shelf which has problem with display after drop. I Checked it inside and it was just display ribbon pulled out from connector due to heavy ferrite ring. I put it back assembly and try it on robot controller. I disconnect working pendant and connect one from shelf. Display Started to work but its stuck on boot or stuck on starting application. You can see video for stuck on boot here [url=https://www.youtube.com/watch?v=Fc3wcvYXys4]https://www.youtube.com/watch?v=Fc3wcvYXys4[/url]

After push Reset from bottom the boot load screen pass , image loaded from controller but then stuck on starting application.. You can see it on video here [url=https://www.youtube.com/watch?v=GIyogUi5fB8]https://www.youtube.com/watch?v=GIyogUi5fB8[/url]


Any ideas why it is happening? Is it flexpendant pcb bad, that is not receiving or sending proper signals. Based on block diagram, all Enable and E-stop signals are independent from LAN communication and only one signal I'm suspecting is FPU-Start (Violet wire , pin 5 if you count from triangel mark on connector) which goes to the Robot controller. I cannot find original part from where that signal is coming. I tracked all other signals, but I cant find this one. Can somebody point this out. It will help me a lot.

I assume that FPU Start signal must goes thru some Transistor/Diode or at least thru resistor, not directly from CPU. Looks like somebody before me touch that PCB and looks like solder was broken on pin 5 (Violet wire.)

When I swap pendants, the other ones are booting and running good.

Thanks for any inputs.

Brano

Or can somebody from programmers explain me, what is process with loading and running application on Pendant? Its going to boot, then Loading image from controller and Starting application, but on what is depending start application? Can load from usb on pendant that application, or how I can test it without robot controller.

Brano

Or is it possible do emulation setup for robot controller on PC, so I can test pendant without present of robot controller? If I can, what software I will need

Pavel Riabichev

Hello
As you power up the controller you can try to hold stop button + programmable key 1. If you have hold-to-run buttons at the bottom of the flexpendant you should hold one of these aswell.

This will reload the image on the TPU.

If this doesnt help then you need to contact ABB to fix the flash disk on the controller which may be corrupt.

/Pavel

Brano

Hello Pavel, I tried P1 + Stop, and looks like pendant have issue to connect to controller. Probably when its dropped, something at PCB broke. You can see that in this video

https://youtu.be/sBOxFWkQU1U

Thanks for information.

Pavel Riabichev

Hello Brano

Im not sure but it may be that the controller disk is corrupt aswell, have you tried the FP on other controllers?

/Pavel

VadimRussia

Brano, Hello. We have a similar situation, tell me how you solved your problem?