FranzPLC

Omron servo (R88D) homing using Mitsu FX3u

4 posts in this topic

Hi guys,

I'm having a problem on how to save the home position for omron servo driver. How does the servo driver know where the home position is after turning on?

Btw, I am using Mitsubishi FX3u for my PLC

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What is the part number of the servo motor?  That will tell us if it is an absolute or incremental encoder.  If it is absolute, then it will have a battery that will allow for the encoder to remember its position.  There is a short process to go through to establish the origin / home position and then it will remember it from then on out.  If it is an incremental encoder, then you will have to perform an origin / home search every time that you turn power on to the machine.

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The servo motor is R88M-KE10030H-BS2. I think it is incremental. I can go already to the home position but how can I register that position to be the home position of the servo? In my case, the servo still registers its home position to its last position after turning on.

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The E in your part number does not appear to be correct.  Is it supposed to be R88D-KT?  Your PLC position controller should have the ability to perform an origin search.  There should be a sensor mounted on the machine so that the servo can locate its home position during the home search routine.

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