We are using our robot for plasma cutting and would like to shift the z axis while the robot is running (from feedback of the torch and workpiece distance). Assuming that we already have the height value on PC, how can we shift the z height while running the robot (while the job is running)?
Posts by tatatae
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We are using a GP 180 with YRC 1000 with an 10 KVA UPS. But whenever we run the robot at higher speed than VJ=20, the UPS would shut itself off and alarm about negative power fault. We suspect that this is because of the regenerative function of the robot. Is there anyway to fix this or disable the regenerative braking function?
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We are considering a yaskawa motoman robot (GP180) to be used with foam and epoxy mold milling. But whenever you google/ search on youtube for robotics milling, most people use Kuka/ABB for milling. Is there any specific reason that makes motoman unsuitable for milling? Or it is just people love to use second hand kuka/abb for these kind of task? Thanks!
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Would the improper grounding be the root cause of the noise? Or it's just a symptom. I will check the grounding cable and update you on the result. Thanks a lot!
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Look in the event logs, the robot is very good at telling you what things are not checking out ok. Particularly the hardware log in your case.
We got some "Lost communication with the SMB" after jogging with noise sometimes. I inspected the log and saw "Main phase power disconnected". This one might just have come from when we disassemble the drive unit for test? Hmmm but we did it with power off. Not sure what happened there.
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I've heard a bad drive unit cause sound like this. Does it do it with the robot-to-controller motor power cable disconnected?
I just tried with drive-to-motor ables disconnected. It didn't make that sound when no motor is connected.
I also noticed the current leakage, and then noticed that the robot ground is problematic and might have been disconnected. After we fix the ground temporarily, the scream become much quieter. Will let you know when we ground it properly within the same power system. We are now suspecting the rectifier as it is the only part of the drive unit that connects to the ground cable (yellow cable).
One thing i think it would be useful. Once we jog the robot and stop jogging but still engaging the guard stop, the noise continues and wont stop until we disengage the guard stop.
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Hello,
We have an IRB 7600 with IRC5 M2004 (with older version servo driver, the black boxes). We suspected a power surge into the robot (yeah... the robot is being used in a warehouse with old power systems separated from the rest of the factory, and external power supply for other things has fuse blown). When we rebooted the robot and tried to jog, we got a very very loud screaming from somewhere in the cabinet (see attached video). We checked and found that rectifier as blown capacitors and driver has a blown capacitors, we proceed to replace all of those. But this did not fix the problem. The robot moves but very slowly and we were too afraid to force it to move We are wondering if there is anything we should look for? We suspect the drive pack and rectifier, and also the EMI filter. Should we try to bypass the EMI filter to see if it's broken?
Thank you very much in advance!
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