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IndustryArena Forum > CNC Electronics > Stepper Motors / Drives > I'm Going Closed Loopy (Nema 34 Hybrid + HB860H encoder issue)
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  1. #1
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    Join Date
    Feb 2016
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    1

    I'm Going Closed Loopy (Nema 34 Hybrid + HB860H encoder issue)

    Hey guys, first post for me here. Longtime lurker on the forum and most of my questions are usually answered with a quick use of the search bar but I'm finally stuck and I need help.

    Problem: 12Nm Closed Loop Stepper and HB860H driver won't function with Encoder mode enabled, but will function normally with encoder disabled.

    With encoder disabled (Switch 6 ON) the motor runs as commanded proving that the issue is not motor phase wiring related.

    With the encoder mode enabled (DIP Switch 6 set to OFF) and given a jog command, motor whines faintly but doesn't move, then bumps a couple steps and then the driver goes into Alarm mode.
    With the encoder enabled but the encoder wires disconnected from the driver the motor does the exact same thing, same noise, bumps a couple steps and alarms.

    I've spent several hours pouring over the wiring and checking continuity and correct pin-outs on the encoder cabling, it's all correct. The encoder is getting 5V from the driver like it should. I even tried going from "differential" to "single end" step and direction wiring configuration to the driver to see if it liked that better for some reason...nope.
    I tried reversing encoder phases, reversing motor phases, changing microstep settings... nothing has worked.

    Running:
    - Mach4
    - ESS and MB2 board
    - 5mm Ballscrew, 1600 Steps/Rev, 8128 pulses/inch in Mach4
    - Commanding a very conservative 100in/min with 5in/sec^2 acccel.


    Here's the exact motor and driver https://www.aliexpress.com/item/3283...42734c4dK1tOKp

    Thanks for any help in advance!

    This is for the Z axis on my EG Mill I built.

    https://www.cnczone.com/forums/attac...d=452446&stc=1

    ~ Owen

  2. #2

    Re: I'm Going Closed Loopy (Nema 34 Hybrid + HB860H encoder issue)

    I hope you have solved problem a long time ago and successfully. But, just in case, its in the wrong encoder connection. We have already purchased the item from this seller - and it is not documented. On the Internet, the colors of the wires for the encoder are indicated - in our case they are connected differently. Change yellow with black (A- A +) and it is likely that your problem will be resolved

  3. #3

    Re: I'm Going Closed Loopy (Nema 34 Hybrid + HB860H encoder issue)

    Ops. I was mistaken, yellow with black I changed in another device

  4. #4
    Ops. I was mistaken, yellow with black I changed in another device

    well working order,
    left to right: white, red, black, brown, green, yellow

  5. #5
    Registered
    Join Date
    Dec 2015
    Posts
    10

    Re: I'm Going Closed Loopy (Nema 34 Hybrid + HB860H encoder issue)

    Hi everybody, I have a similar issue with 12Nm hybrid and HBS860H.
    The motor runs for few steps with noise, then red light on the driver flash. Can anybody help me?
    https://www.cnczone.com/forums/attac...d=461458&stc=1https://www.cnczone.com/forums/attac...d=461460&stc=1https://www.cnczone.com/forums/attac...d=461462&stc=1https://www.cnczone.com/forums/attac...d=461464&stc=1

  6. #6
    Registered
    Join Date
    Dec 2015
    Posts
    10

    Re: I'm Going Closed Loopy (Nema 34 Hybrid + HB860H encoder issue)

    I just want to give a contribute telling who has the same problem that I have solved looking at the encoder wires colors.... there were an error in the sequence....To understand that, I have taken out the encoder cover and looked at sequence.

  7. #7

    Join Date
    May 2022
    Posts
    2

    Re: I'm Going Closed Loopy (Nema 34 Hybrid + HB860H encoder issue)

    Hello @trivalb,

    I think I've encountered the same problem.
    In your pictures the wiring seems to correspond to what is mentioned on the sticker on the motor.
    Are you saying this is wrong? That the encoder wire colors mentioned on the sticker on the motor are wrong?
    And we need to open the motor to figure out the correct colors?

  8. #8

    Join Date
    May 2022
    Posts
    2

    Re: I'm Going Closed Loopy (Nema 34 Hybrid + HB860H encoder issue)

    If anyone stumbles on this thread with the same problem: I opened the motor and found that the sticker corresponds to the wire colors.

    I finally got it working by:
    1. Checking all connections
    2. In the encoder wires: switch A+ with B+ AND A- with B-
    (So different from what the sticker on the motor says).

    - - - Updated - - -

    If anyone stumbles on this thread with the same problem: I opened the motor and found that the sticker corresponds to the wire colors.

    I finally got it working by:
    1. Checking all connections
    2. In the encoder wires: switch A+ with B+ AND A- with B-
    (So different from what the sticker on the motor says).

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