Electronics Forum | Sun Dec 10 22:38:04 EST 2017 | jmelson
I have an old CSM84 with the brush motors, model PA130620. I had a few intermittent feedback errors, now they have gone solid. But, I found slowing the machine to 85% lets it run without the error. So, I'm thinking there may be drag on the axis. T
Electronics Forum | Thu Dec 14 16:47:53 EST 2017 | jeffr
You should replace the Brushes first. If it continues.. you must check the wire continuity back to the controler and possibly replace the Motor
Electronics Forum | Thu Dec 14 21:56:25 EST 2017 | jmelson
I checked the brushes, there is lots of length left on them, and the springs and pigtails are in good shape, too. I have been checking various cables, and reseating connectors, but making a resistance measurement from the brush holders back to the s
Electronics Forum | Sun Dec 17 22:23:46 EST 2017 | jmelson
Well, I fixed it. I had resisted taking the motor off because of the recalibrations that would be required. But, it got bad enough I had to. Under the microscope, I could see copper dust packed between the commutator segments. I removed that, and
Electronics Forum | Thu Dec 14 23:21:12 EST 2017 | jmelson
OK, I think you are right! The one brush I can get to looks fine, the other one is on the back, and there's no way to get to it without removing the motor. Even the front brush was VERY hard to get back in. But, there are rubber plugs that allow y
Electronics Forum | Thu Feb 14 23:08:41 EST 2013 | dekhead
Squeegee error on a 248 is strictly that sensor (reed SW) on corresponding (Front / rear) squeegee cylinder is not seeing a change in state... Either a physical obstruction preventing cylinder from exending fully - OR- if it is extending fully, then
Electronics Forum | Wed Oct 26 22:31:48 EDT 2022 | sarason
Broken wire connecting to the encoder on your servo, or anyware else in the feedback loop?, bent up encoder? sarason
Electronics Forum | Wed Oct 26 22:32:26 EDT 2022 | sarason
Broken wire connecting to the encoder on your servo, or anyware else in the feedback loop?, bent up encoder? sarason
Electronics Forum | Fri Jul 07 17:17:43 EDT 2023 | ttheis
We swapped the Y1 and Y2 pc800 controllers with no change. We swapped out the UIMC III-I cards from another machine with no change. VRM amps all look OK, no errors. The machine moves the head both in the x and y directions during the zeroing attemp
Electronics Forum | Mon Sep 30 16:36:00 EDT 2013 | richardconnell
I have a Universal Instruments Corporation TAB Bonder. Oldish machine. Initial fault on machine : - "Axis Head 1 Z DAC Limit error during move absolute command" Other fault seen after we reset power, Zeroed axis etc. - Axis Head 1 - Z error not re
.gif)
