4.5A THB6064AH Single Axis Stepper Motor Driver Review - Page 2


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Thread: 4.5A THB6064AH Single Axis Stepper Motor Driver Review

  1. #13
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    Default Re: 4.5A THB6064AH Single Axis Stepper Motor Driver Review

    Quote Originally Posted by BronzeAgeMan View Post
    Your misunderstanding I think. I and SteveWill are favoring the Massmind one:
    6064: 4AMP Stepper Motor Driver Kit. massmind
    Agree, I misunderstood because you replied this:
    Quote Originally Posted by BronzeAgeMan View Post
    Thanks! Let us know. I'm ordering 3 myself.
    to tinky1233 (I'm probably not the only one who did).

    Quote Originally Posted by tinky1233 View Post
    I have zero problems so far, everything is running smooth, all components are cool, so no need for fan, to my surprise even motors are not getting hot, and they hold more than 6560 at full power (which made motors very noisy and hot). I haven't touched the mistery switch yet, I'm afraid
    You are using the drive at 24V and 2.5A if I read correct?
    This is only 1/3th of the chip's capabilities and heat decrease lifetime exponentially , wonder what would happen at 100%.
    Electrolytic capacitors are an example of this, they heat up internally and their lifetime is reduced by half for each 10°C temperature increase, yep 50% reduction.
    Cooling might help a little but using the correct type is much better, quality low-esr capacitors are expensive.

    Quote from:
    Electrolytic Capacitor Lifetime Estimation | PowerGuru - Power Electronics Information Portal

    Summary
    Aluminum electrolytic capacitors often determine the lifetime of electronic devices. A thorough knowledge of some of the key parameters and aging concepts of these components are necessary to ensure the reliable design of electronic devices with a predictable lifetime.
    There are several options for this:
    1 use the cheapest one and don't bother about lifetime.
    2 calculate and choose a type that will last just long enough to cover the warranty period.
    3 go for quality and use one of the best available.

    1 is probably what you have, 2 is what commercial companies do (sounds familiar, doesn't it) and 3 is what hobbiests do to avoid problems and hassle.


    Did you ask the supplier about the mistery switch? Any reply?

    Open source CNC electronics and accessories:
    http://home.scarlet.be/ldt006/THB6064AH.html


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    Default Re: 4.5A THB6064AH Single Axis Stepper Motor Driver Review

    I agree what you said about the quality 100%.
    But,
    For the 26$ assembled and delivered to my house I don't care if they last a year, I will replace the whole thing. Also this is the first Chinese driver that works as intended, with no quirks, and I have tried many including 4 axis and 3 axis systems, I even had one from Mexico (xilotex clone), and none work great. I use my machine for hobby purposes, and for some small PCB prototyping work. If I had a business and I depended on machine to work and make me money I would buy gecko driver in instant and not even hassle with this inferior devices. But for hobby I can't afford that much and I am always looking for best buy stuff and I was really happy that I found this driver and wanted to share my find with you guys. I appreciate this forum, I had found many solutions here and great reviews, and I wanted to contribute by testing this driver and provide you with my findings.

    I have updated my power supply by adding meanwell 12v 30A in series to existing 24v one. I had to upgrade because new spindle was slow on 24V. So I cranked the pots on both PSU's to max and I get about 40V with 15A capability.

    Drivers only warm after few hours of air cutting (testing dummy gcode) motors warm not hot, no missed steps. No issues so far, apart from complete lack of documentation.



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    Default Re: 4.5A THB6064AH Single Axis Stepper Motor Driver Review

    Quote Originally Posted by lucas View Post
    Agree, I misunderstood because you replied this:

    to tinky1233 (I'm probably not the only one who did).
    Apologises, I got confused thinking SteveWill bought the Chinese creation,then not...


    That article was really informative, especially the Lifetime Model and calculations. Thanks.



  4. #16
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    Default Re: 4.5A THB6064AH Single Axis Stepper Motor Driver Review

    Also what I noticed on these Chinese drivers is poor heat management that also causes failures as well as cheap capacitors. They often put cheap small heatsinks and rely on fan cooling which causes more problems than solves. Fan is usually powered by same regulator used for logic and causes overheats , termal paste is not yet invented in those factories also.
    This 6064 looks like it's build by different crew. Heat sink is large and massive, components are tightly screwed and there is termal paste. PCB is quality FR4 material with good tolerances and quality control. Soldering is clean and nice, properly heated with no bad joints. Electronic capacitors are not the best, but they should work fine if you don't push the board 100% Only downside is lack of documentation, and triangle screws that prevent easy modification and upgrade, if you want to put better components...



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    Default Re: 4.5A THB6064AH Single Axis Stepper Motor Driver Review

    Did you have any logic level problems?

    I am setting up an eBay/chinese JP-6445A and I am having some problems. When I connect to a chinese parallel breakout or directly to the parallel port I am only seeing 3.3-3.4V as a logic high. If I let the JP-6445A enable(EN) float, it goes to 4.12V, direction(DR) floats to 4.42V. If I step with the enable floating at 4.12V the motor will step correctly, and I can change the direction by floating/grounding the direction pin. This is consistent with a complaint I saw in one of these threads where the motor would only turn in one direction.

    3.3V is a valid logic high for TTL. It looks to me like this JP-6445A needs a little more than that for the enable and direction pins.
    The TB6564AH data sheet list VinH as a minimum 2.0V, so this is probably in the board design.



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    Default Re: 4.5A THB6064AH Single Axis Stepper Motor Driver Review

    I changed the resistors between the PU, ER, and EN pins and the optocouplers. Two of these surface mount Rs measured 267 ohms and one measured 326 ohms. I believe these resistor values allow too much current in the VinH conditions (my parallel port only has 3.3V high). (5V - optodrop(.5?) - 3.3) = 1.2V which means 4.5mA going through optodiode which must be enough to turn in on.

    I changed these three resistors to 1K and everything seems to work. Low input spec is 5mA, I would go a little smaller on the resistors if I did it again. (5V - VinLmax - optodiode drop)/5mA > R, maybe 700 ohms.

    If you have one of these cheap chinese boards and it only runs in one direction or doesn't work with the enable, you can give this a try. If the driver works when the input is floating and grounded but not when connected to the cnc, this may be your problem.

    Notice massmind design uses a 10k pullup in conjunction with the TB6564AH internal pulldown so it won't have this problem. This is an easy fix if you don't mind working with the three surface mount resistors, but I wish I had been aware of the massmind kit. It would have been quicker to build up the kit than debug and repair this board.

    In the attached photo, the tip of the multimeter is pointing to the three surface mount resistors on the bottom side of the board that should be replaced.

    4.5A THB6064AH Single Axis Stepper Motor Driver Review-img_20150121_171802-jpg



  7. #19
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    Default Re: 4.5A THB6064AH Single Axis Stepper Motor Driver Review

    Quote Originally Posted by jtrantow View Post
    Notice massmind design uses a 10k pullup in conjunction with the TB6564AH internal pulldown so it won't have this problem. This is an easy fix if you don't mind working with the three surface mount resistors, but I wish I had been aware of the massmind kit. It would have been quicker to build up the kit than debug and repair this board.
    ,o)

    Can I quote you on the site? It's worth a $10 discount if you agree. If you ever decide to order one of the kits, just send me a message HERE on CNCZone reminding me that I offered it.

    James hosts the single best wiki page about motors for CNC hobbyists on the net:
    http://techref.massmind.org/techref/io/motors.htm Disagree? Tell him what's missing! ,o)


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    Default Re: 4.5A THB6064AH Single Axis Stepper Motor Driver Review

    Quote Originally Posted by James Newton View Post
    ,o)

    Can I quote you on the site? It's worth a $10 discount if you agree. If you ever decide to order one of the kits, just send me a message HERE on CNCZone reminding me that I offered it.
    Sure, it will be a few weeks before I know whether I need the extra drive current from TB6564AH drivers.



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    Default Re: 4.5A THB6064AH Single Axis Stepper Motor Driver Review

    Those 3 resistors from what I see are current limiting resistors for the optocoupler diode. They should be set to provide 5-10mA depending on the voltage you connect to +5V terminal. I use Chinese breakout board you can see on the video and have used 5V onboard source and I have no problem. Where did you measure floating voltage (it should be depended of input voltage you connect to common + terminal). For - signal (EN, DIR, STEP) you should be using open drain output with no pull up and you should be fine. Strong pull-up can provide unwanted current for optocoupler diode and cause it to lock up in conducting state.



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    Default Re: 4.5A THB6064AH Single Axis Stepper Motor Driver Review

    I am reading this again and I have feeling that you misunderstood how input works. The input uses 5V power on +5V terminal. Other terminals are 0V driven NOT LOGIC HIGH. Driver expects logic low pulses (connecting to GND) and floating (connecting to nothing) as idle. Did you connect it like this?



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    Default Re: 4.5A THB6064AH Single Axis Stepper Motor Driver Review

    Quote Originally Posted by tinky1233 View Post
    I am reading this again and I have feeling that you misunderstood how input works. The input uses 5V power on +5V terminal. Other terminals are 0V driven NOT LOGIC HIGH. Driver expects logic low pulses (connecting to GND) and floating (connecting to nothing) as idle. Did you connect it like this?
    I'm pretty sure I understand how this should work. A logic level Vin draws current from the +5, through the optodiode, through the resistor to Vin. The current through the optodiode should be 5mA to turn it on. The problem with the design is that the VinHigh of my parallel port is only 3.3V which causes enough current to turn the optodiode on. (Even more current when my VinLow goes low (0.8V), so with the optodiode never shuts off.

    I could take a look at the design and try using 3.3V instead of 5V, but the resistor change is working.



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    Default Re: 4.5A THB6064AH Single Axis Stepper Motor Driver Review

    You didn't have to change anything on the stepper board, the design is fine and 300Ohm value is ok for 5V optodiote. You should make an open drain (or open Colector) output, and you should be fine. I am using cheap chinese breakout and it works fine.

    You can make open drain output with simple mosfet, or open colector with general purpose NPN and 4.7K resistor, it should solve all problems and no board modification is necessary, here is drawing:
    4.5A THB6064AH Single Axis Stepper Motor Driver Review-open_drain-jpg

    You need to invert output after this modification!



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4.5A THB6064AH Single Axis Stepper Motor Driver Review

4.5A THB6064AH Single Axis Stepper Motor Driver Review