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Thread: need to replace spindle encoder

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    Registered samu's Avatar
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    Default need to replace spindle encoder

    machine: hardinge vmc 1000
    control: fanuc 0-MD
    spindle encoder: sumtak lhe-428 1024

    I get spindle alarm 47 (Detects incorrect position coder signal count operation) I need to replace encoder but this model is discontinued. I'm looking to replace by another model but how can i be sure that it is compatible?

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  2. #2
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    The one I offer you this morning will work for your machine. guarantee
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    thank a lot, i propably order to you in few day, is it realy a sumtak lhe-428 1024 or a compatible one? I'm not very familiar with that stuff, for connector, i just have to put same color of wire at the same position than the old one and it will work?



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    Community Moderator Al_The_Man's Avatar
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    Is this a shaft encoder or through-hole?
    You will find a replacement either at Renco or Hengstler, Koyo are also a low cost resource.
    5vdc 1024 line differential should work OK.
    BTW, Sumtak were taken over by Renco, now heidenhain own Renco.
    Al.

    CNC, Mechatronics Integration and Custom Machine Design (Skype Avail).

    “Logic will get you from A to B. Imagination will take you everywhere.”
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    it's a bore style encoder but the hole is not through.



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    Community Moderator Al_The_Man's Avatar
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    Here is a Renco they are dumping these new/old models, ebay # 200369969848 $90.00
    It is 1024 with a 1/2" shaft size, the cables are tricky to make up so if you go for it, get them to supply a cable.
    Al.

    CNC, Mechatronics Integration and Custom Machine Design (Skype Avail).

    “Logic will get you from A to B. Imagination will take you everywhere.”
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    how can i do to know each wire function. there is 9 wire. i think it is:
    A
    not A
    B
    not B
    Z
    not Z
    Vcc
    0V
    but wath is the last wire and how to know the color of each of them?



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    Community Moderator Al_The_Man's Avatar
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    You will most likely have a shield as the 9th wire.
    The Sumtak info I have for the LHE series is:
    White +5v
    Black 0v
    Red A
    Pink /A
    Olive B
    Blue /B
    Yellow Z
    Orange /Z
    shield
    They are almost identical to the Renco style on ebay right now.
    Al.

    CNC, Mechatronics Integration and Custom Machine Design (Skype Avail).

    “Logic will get you from A to B. Imagination will take you everywhere.”
    Albert E.


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    shield is on the green and there is a withe wire



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    connect the A B strobe wire and VCC and GND if any feed Back connection is there connect that also
    Cable for connecting
    between the main When a built–in
    When a separate pulse coder or
    linear scale is used
    CPU board to the
    servo amplifier
    pulse coder is used
    Feedback cable
    connected to the motor
    Cable connected to the
    separate pulse coder
    1st axis AMP1 ENC1 ENC1 SCALE1
    2nd axis AMP2 ENC2 ENC2 SCALE2
    3rd axis AMP3 ENC3 ENC3 SCALE3
    4th axis AMP4 ENC4 ENC4 SCALE4



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    The SIgnal Details are as : TLML
    TLMH
    CTH1
    CTH2
    SRV
    SFR
    ORCM
    MRDY
    ARST
    *ESP
    Torque limit command (low)
    Torque limit command (high)
    Gear signal 1
    Gear signal 2
    Spindle reverse rotation
    Spindle forward rotation
    Spindle orientation
    Machine ready
    Alarm reset signal
    Emergency stop
    SPSL
    MCFN
    SOCN
    RSL
    RCH
    INDX
    ROTA
    NRRO
    INTG
    DEFM
    Spindle selection signal
    Power line switching
    Soft start/stop cancel
    Output switching request
    Power line state confirm
    Orientation stop pos. change
    Rotation direction of ORCM
    Short-cut of ORCM
    Speed integral control signal
    Referential mode command



  12. #12
    Community Moderator Al_The_Man's Avatar
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    I took the LHE info from the Sumtak catalogue and it shows the white wire as 5+.
    Do you have 9 wires counting the shield?
    Al.

    CNC, Mechatronics Integration and Custom Machine Design (Skype Avail).

    “Logic will get you from A to B. Imagination will take you everywhere.”
    Albert E.


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