Hello All,

Can you please share info hpow to adjust encoder position on shaft? Mr_Al description is good, but I do not understand one point-  where to connect osciloscope on encoder. My encoder is ERN1387

Thank you!

Mr_Al

Hello Dhinakaran,
The encoder and field windings most likely are out of alignment.

You need a portable drilling machine, three 1000ohm resistors and a dual channel oscilloscope.

Remove the motor mechanically from the machine.
Leave the encoder connected to the drive reg card.
Disconnect the three phase power connection to the servo motor at the LT Module.
Mechanically connect a portable drill to the servo motor shaft to allow you to rotate it.
Solder three 1000 ohm resistors in a star config.
Connect the three free ends of the resistor to the u, v and w connections of the motor connector you disconnected from the lt module..
Connect an oscilloscope to the U phase connection and the star connection of the resistors.
Connect an oscillsocope to the reference pulse from the encoder, please see the motor_connectors.pdf attachment.
Rotate the motor shaft using the portable drilling machine and adjust the encoder position until you have a display which looks like the one on fig 110.1 of the waveform.pdf.

All the Best
Mr_Al.

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Split from REASSEMBLE OF INCREMENTAL ENCODER.

nulizhang

Connect to "R" and "0V" 

 Thank you!

Is it possible to identify motor reference point let say motor 1FK6063-6AF71-1AG0-Z without turning it with a drill? Without taking it from machine? In other words, is there any other way to do alignment of encoder to the motor?