OK, Thanks a lot. I will try it.
3 axis Cracking
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PaulSola -
July 22, 2017 at 1:34 PM -
Thread is marked as Resolved.
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I have just checked yellow wires(7 and 8 ). The voltage is 23,8
What else could be a problem?
Thanks -
There's still the potential for a faulty drive. Unfortunately, I don't have drawings easily available to give part number and location of each axis.
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What problem could be in my gearbox?
5 min ago the robot started "cracking" and it seemed to me that the sound came from here -
Does anyone has schemes for the engine and gearbox?
If it is the problem inside, I should see the schemes.
Thank you! -
The 39205 error should not happen with a mechanical issue. Wish you had a another amp to try. The amp that controls axis 3 is a DSQC346E (3HAB8101-011) in position A2.
I remember a couple of similar issues caused by a separated shield on the resolver cable allowed interference from the motor cable to corrupt the resolver signal. While the resolver signal was still there, the noise caused values that caused it to look like abrupt changes in speed which then caused the robot to instantly shut down the motor. It acted like a motor with the commutation off (an abrupt change in speed and/or lockup). Can you monitor the position data in the Jog menu when this happens and do you see abrupt or erratic changes in position data?
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Ok, I will try to do it! Thank you!!
And today was another strange thing.
I started moving the robot and it was moving with jerks. (But I did not choose any modes) -
Your answer "the noise happens in whatever position the robot was left in" makes me wonder if it is the brake sticking on, worn or badly adjusted?.
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Just my opinion:
The "cracking" seems like the brakes setting after a fault - perhaps it sounds different "live".
The video showed the head drift UP after the robot faulted - suggests the weld unit has overbalanced the axis.
(Does it drift up when you release the brake?)
(Does the fault always occur when driving the axis DOWN?)
(Does the error still occur without the weld unit attached?)
The jerking could be a sticky brake, a phase loss, drive/amp card, or feedback (resolver) problem.
If the problem is in the gearbox, you should be able to feel it when manually (not via pendant) moving the axis with brake released.Skooter:
Any other axis use that DSQC346E (3HAB8101-011)? -
Your answer "the noise happens in whatever position the robot was left in" makes me wonder if it is the brake sticking on, worn or badly adjusted?.The robot is not calibrated. But all axis were working good. Even after "cracking" I turn off and turn on the robot and it works perfectly and noiselessly.
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(Does it drift up when you release the brake?)
(Does the fault always occur when driving the axis DOWN?)
(Does the error still occur without the weld unit attached?)Thank you for your reply!
No, it does not drif up.
it occurs when I driving the axis UP(Like on a video. Down it goes ok but when i start to move it UP it cracks)
Ok, i will try to move the robot without the weld unit -
Oh my God, please guys , tell me what is it.
Every day the situation is getting worse(((((
Please, see these videos.
And this is the sound when i move 1 axis!!!!
First video: starnge hum.
https://drive.google.com/open?id=0B0uf7…UU5rZXBUS0R1UXc
Second video: VERY strange hum
https://drive.google.com/open?id=0B0uf7…QVdFSF8zNDhZSjQ
Thank you -
Amplifier, power supply, motor, resolver, SMB, shielding.
You can try moving cables to see if anything changes.
Unplug and reconnect connectors - motor power, resolver, SMB.
Eventually, you will need to swap/replace something to see if it has any effect.
(Amplifier card would be my first choice)
Removing the axis computer will give you the opportunity to reload the OS (seldom a painless process). I'd hold off on that.
ABB tech support might provide other ideas - 1-800-435-7365 (from here, anyway). -
@ Iowan - the amp only shows as being used in the 2400 A2 position for axes 3, 6, 5.
Not at a controller right now but why can't the arm load be defined?
Take the arm load off and try. While it's off, weigh it.Is the humming coming from just axis 1?
Had problem with M98A 4400/60 yesterday where it kept giving overcurrent on many axes. After hours of troubleshooting and fixing other issues I finally tried reloading software & that fixed it.
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Now, when I move 1,2,3,4,5,6 axis the humming comes...(like on first video)
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please tell me, if i want to reload the softeware should i press I-Start?
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You MUST have the key disk & the software disk pack BEFORE attempting a C-Start. Did you ever find the software disks as mention in one of your earlier posts?
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check with the braking release.power supply to braking system of the robot.
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As a zero cost exercise, I would put the arm into the calibration position and support the upper arm. Drain the oil from axis 3 and check for metal contamination (would indicate mechanical damage) then remove the motor (engine) so you can look inside the gearbox for damage. While the motor is off you can run axis 3 only (use joint mode) which should prove if it's a servo/amp/control/wiring etc. issue or if it runs OK start looking for a mechanical problem in the drivetrain/gearbox.
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You MUST have the key disk & the software disk pack BEFORE attempting a C-Start. Did you ever find the software disks as mention in one of your earlier posts?Yes, I have found other disks at home. So I have the key disk and other boot disks
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