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My first inclination is to suspect wiring, either on the way to the encoder, or internal to the encoder. Did he verify the wiring to the encoder was intact?
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What is involved in fixing a encoder problem on the Series II r2e3 boss 8 mill ?
a service teck informed me that the encoder was out on the x axis.
What is the method of checking for this and what is the fix.
and are parts still avialable? and at what extimated price?
thanks
Richard
My first inclination is to suspect wiring, either on the way to the encoder, or internal to the encoder. Did he verify the wiring to the encoder was intact?
Encoders can fail in more than one way. You can lose the marker pulse which occurs once per revolution and allows a machine to home. You can lose one of the channels use for position. Most encoders have a small bulb and are considered optical. This can burn out or silver the inside of the bulb to the point where it cannot count.
Typically I use a 5VDC power supply, a drill and an oscilliscope to check a encoder.
George
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)
George, what size drill bit?Originally Posted by machintek
Are these old enough to have a bulb? I assumed they were new enough to have LEDs in them.
the serviec tech said that he swaped the x and y servo motors. he said that the encoder on the motor needed replacing.
does this sound correct?
and what would be involved in the cost and fix of the encoder?
thanks
Richard
the service tech said that he swaped the x and y servo motors. he said that the encoder on the motor needed replacing.
does this sound correct?
and what would be involved in the cost and fix of the encoder?
thanks
Richard
I use the drill to turn the encoder, the power supply to power it and the scope to watch the waveform.
Swapping a motor eliminates the entire circuit for that motor and leaves only the motor suspect. Very common for service techs to do if they don't have sophisticated equipment.
If the motor moves then it leaves how it moves and if it counts. If it moves correctly then the tach and armature are good. Lastly it leaves the encoder.
George
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)
I am retrofitting my r2e3 and it is a perfectly fine running machine i'm selling the controll boards, the human machine interface panel, the dc servo motor encoders & the servo drivers all of which are still underpower and in good working order i just posted a video on youtube of the machine running it's titled bridgeport r2e3 boss 8. If any ones needing parts i'll be reasonable on the price just let me know. I can make another video if you need to see something spacific of i can send pics whatever i can do to help i'm even open for trades tooling, tool holders, clamps, etc
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