Hi guys,
I’ve got a fanuc robot with a rj3ib controller and dual aero ped welders. I am getting alarm svgn-20 pressure shortage 2 gun 1 and svgn-158 thickness 5 expected 10 available 22 and max 25. It only does it when it tipdresses. Gun 1 will clamp onto the tipdresser then the fault occurs. We have changed tips, did an auto gun master with the same result. We next did a auto gun master and ran wr_set01 with same result. We checked to see what the thickness measured at the time of the fault and it was -4.8. We changed the thickness in the tipdress line to 10 without change. We changed the expected to 15 and to 5 in the pressure schedule under detail with no change. The tipdress function is set to tipdress not spot. The guns do have a counter balance and have a gun 1 equalizer pressure and gun 2 equalizer pressure outputs. It welds fine but just won’t tipdress without faulting out. We checked tip alignment and dresser alignment at the start. Any ideas on a fix?
Svgn-20 and svgn-158
-
Nathan -
July 12, 2019 at 12:00 AM -
Thread is marked as Resolved.
-
-
Hi Nathan,
the message means that the Robot doesn't get the expected pressure.
1. Try to increase the Gun Speed.
If it doesn't work increase the Pushing depth on your pressure shedule. -
Thanks for the rely. I have already increased the pushing depth with no result. How do I change the gun speed? Forgive me because the spot welding robots are somewhat new to me.
-
Hi Nathan,
are you using a Servo Gun or Air pressure gun?