12/30/2017 Leadshine 3ND883 3-Phase Stepper Drive Teardown & Compare to Tormach Version
I am still In Recovery From Surgery But Should Get Things Moving Quickly.
3ND883 Details | 3ND883 Manual
Mail Call 12-30-2017 a Non Functioning (Dead) Tormach 3 Phase Stepper Drive Part # 3200 Arrived Safe and Sound…
The Only Editing Will be The Removal Of The Serial #’s In Double Photos The Left Photo Will Always Be the Tormach Drive. During the Disassembly Phase the Retail (Working Drive Will Not be Harmed) Sorry!
Left is the Tormach Version of the Leadshine 3ND883 Drive $189 + Ship and Right is the Retail Version of the Leadshine 3ND883 Drive is about $69 shipped. You Can See There is not much of a Difference Externally. Chinese Writing on Leadshine retail. There is a 10 Pin IDC Header on the Tormach version and the Phoenix Connector on the Retail Version. Pinouts of the IDC See Older Tormach Manual.
The Gut’s (Comments To Follow)
Close Up Photos Of The Circuit Board!!
Tormach Drive Off The Heatsink.
Tormach 3nd883 Drive Top & Bottom of PCB.
Looks to Be Using Standard IRF540A Mosfets
Up Next is the Simi Disassembly Phase! Taking Components Off… Most the Part #’s have been Laser or Acid Etched Away on Both Drives.
Removed Mosfets All Checked Out Good. All Mosfets Within International Rectifier’s Data Sheet Specifications. My experience this is the 1st thing to check on these Leadshine drives.
Next Check The Transformer… Yep All Good.
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Kinda Gave Up For the Night… As Need to get a New Nozzle for my Desoldering Gun! I have a few some place but this one starting to where out and cause to much damage. Want to Minimize the Damage!
Ohhh Some of My Old Desoldering / Soldering Equipment Used Tonight! The Power Supply is 80V @ 5A
After Giving my Desoldering Nozzle a little hand drill treatment and replacing a rotten filter, I Was Doing Some Additional Disassembly and Testing of Parts. I Found a Bad LM317 Voltage Regulator on the bottom of the Board… I was able to Scavenge one form a Junk PCB I had laying around it was surface mount but WTH it will work! I Replaced it and Reassembled the Drive… And Yes that is a Green Light!
I Hooked It Up to the Lathe And We have Movement… I know there are simpler ways to diagnosis but my intent was to provide a tear-down of the 3nd883 for blog content which that intent has been a success.
I am Going To beat This Drive a Bit… Prob Till Failure!
Update:
10/2021 Drive is still operational..
Last Updated on October 15, 2021 by Steven Rhine