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IndustryArena Forum > MetalWorking Machines > Mori Seiki lathes > Any Good Options for Retrofitting an Old Mori Seiki SL3?
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  1. #1
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    Feb 2017
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    Question Any Good Options for Retrofitting an Old Mori Seiki SL3?

    I have a Spare SL3 with Good Servo's, Spindle Unit, etc... The machine is in good condition, but the axis drives give me fits.... Are there any Good Option out there to use the Original DC Servo's with a Different, or shall I say more modern Axis Drive? Thanks.

  2. #2
    Gold Member
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    Feb 2009
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    Re: Any Good Options for Retrofitting an Old Mori Seiki SL3?

    Could be, but SL3s were made for years, so could be anything from a yasnac 2000 to a Fanuc 10/11
    If early, then almost any 90vdc drive can handle the servos. Most I've seen also replace the spindle drive and spindle motor though, as those were a different animal.

    Sent from my SM-T813 using Tapatalk

  3. #3
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    Re: Any Good Options for Retrofitting an Old Mori Seiki SL3?

    90vdc drive can handle the servos
    What do you mean ?

  4. #4
    Registered
    Join Date
    Aug 2004
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    700

    Re: Any Good Options for Retrofitting an Old Mori Seiki SL3?

    The chinese fanuc copy gsk,
    emc2 linux sw controller,
    or machx,
    will all work.
    Or centroid accorn.

    Depending, you will need some hw to link the original servos to the new controller hw and firmware.
    If the servos are/were 0-10V analogue, then You need an interface able to accept those signals.

    Mesa HW for EMC2 linux is very good, and respected.
    EMC2 has some quirks.
    So does everything else.

    Machx needs a hw controller, and the best is the Cslabs series csmio-xx.
    IMO.
    (Afaik after 15+ years).
    I use the CSMIO-IP-S, ie step/dir, but the -A for analogue is equally good and can link directly to analogue-driven industrial servos.

    The CSMIO-IP-S + Machx is the best combo I know of,
    as a professional MT builder.
    My lathe servos support both step/dir and analogue, I use s/d.

    The emc/mach/centroid ((gsk)) lathe stuff all have various quirks, drawbacks, failures, missing features, etc.
    And machx stuff depends on the hw interface, a lot.
    (So does emc2, but less visibly).

  5. #5

    Re: Any Good Options for Retrofitting an Old Mori Seiki SL3?

    I would replace the DC servos with a more modern system. The servos from DMM Technologies https://store.dmm-tech.com/ are inexpensive and work very well. I use their 1.8KW servos for the axis drives on my lathe. Once these are installed your options for a control system are almost limitless. The DMM servo drives will accept either analog or step & direction control.
    Jim Dawson
    Sandy, Oregon, USA

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