Testing a dc servo motor

camaro_dan67 · Dec 1, 2021

Can someone give me instructions on how to test a brushed dc servo motor. Its a model Fanuc A06B-0651-B011. Thanks.

atex57 · Dec 1, 2021

What are you trying to test for?

The first thing I do is give it the smell test, burnt smell probably winding.

Then check the brushes, are they proper length?

Does it turn with a battery or charger? How fast?

What is the voltage and amp rating?

Ed

camaro_dan67 · Dec 1, 2021

I want to test to see if anything is shorted. Its 165v 12a.

garyhlucas · Dec 1, 2021

Motor shops have a tester they call a growler I believe. Its like a V block with coils that tests each segment of the armature as you rotate it.

magno_grail · Dec 2, 2021

A high voltage brush motor might test good at low voltage but short with high voltage due to brush dust getting in the windings. Never blow air into the brush area as it will push the dust into the windings. Disassemble the motor and flush the windings with a cleaner that will not remove the shellac from the windings. Otherwise you will really have a short and have to have the armature rewound.

camaro_dan67 · Dec 2, 2021

I dissambled the whole motor and cleaned with qd electronic cleaner. I also cleaned the commutator with 1000 grit paper to brighten the copper.

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Testing a dc servo motor

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garyhlucas

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magno_grail

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camaro_dan67

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