Thread: Chinese 6040 stepper drives
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23-05-2019 #1
Hi All,
i have been running the Chinese 6040 for a couple of years on light work and i have been happy with it so far. a couple of weeks ago the X axis stopped working so after a little research i managed to swap the A axis driver (which was never used) over and it worked great. yesterday however the Y axis stopped working and again after swapping drivers around it was confirmed to be a driver issue. this leads me to my questions
where in the UK can i get a replacement YOC335 driver FAST as i need to finish a job.
would i be as well replacing all the drivers and BOB and if so would i need to replace the stepper motors?
can you make some recommendations as i know absolutely nothing about any of this and after reading some threads i am even more confused
thank you in advance
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24-05-2019 #2
Various Chinese 6040 manufactures use different electronic hardware
some use an all in one board others a variety of breakout boards and stepper drivers
photos of the electronic hardware in your machine will be helpful
If you have lost two” X axis stepper drivers”
inspect the cable connecting the X axis motor to your control box for damage
an intermittent break will damage the driver
a quick web search for the YOC335 didn't indicate if its built around the TB6560 or TB6600 IC
open the faulty driver and take a picture of the board
to complete the job you may find you can obtain a TB6600 based driver for example quicker than the original YOC335
one thing to check is the connectors : –
some have screw terminals for all connections others 2 and 4 pin connectors
what's power supply output voltage ?
JohnLast edited by john swift; 24-05-2019 at 09:57 PM. Reason: correct typo
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25-05-2019 #3
Hi John and thank you for the reply
it was the X axis that originally stopped working but this time it is the Y axis.
when the X axis went i did read about checking wires and i did change the X axis one but i found it to be a little more fiddly than i thought it would be. i also didn't ground it out as i wasn't confident in soldering a wire to the sheath without damaging the wires below, anyway i am sure that it isn't the wires causing the issue
i have looked at other drivers but was unsure if they are compatible or if i had to change the motors as well. the terminal connectors on the drivers are also a concern as i wouldn't have a clue which wire is which.
the power supply voltage is 24volt
i have contacted cnc4you and they are currently looking into which driver would be best suited as a replacement so i will let you know what they say. in the mean time i have attached a photo i took of the X axis driver but they are all the same
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25-05-2019 #4
It looks like the driver is one of the many TB6560 based drivers
some CNC kits sold comprise of motors & drivers and a 36V power supply
the TB6560 IC has a maximum supply limit of 24V !!!! so the drivers don't last very long
most if not all TB6560 drivers do have design problems
https://www.cnczone.com/forums/gener...-software.html
with the 24V supply they should be OK but the low supply voltage limits the speed you can step the motor
do you have a multimeter to do some simple continuity checks ?
the main thing is to connect one motor coil across the +A & -A terminals
and the other across the +B & -B terminals
you can sort out the motors direction later in software
John
PS
your driver looks like another version of the TX14207
PPS
going by this diagram it looks like the + step , + direction & + enable terminals are commoned and only have one + 5V connection to the breakout board +5V
Last edited by john swift; 25-05-2019 at 11:14 AM. Reason: add PPS
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25-05-2019 #5
thanks again john even though that is as clear as mud lol
the thread you linked to was well over my head
not sure what you mean by
going by this diagram it looks like the + step , + direction & + enable terminals are commoned and only have one + 5V connection to the breakout board +5V
the switches are also different but hopefully i can figure these out as there is the info printed on the board
would this work do you think ?
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25-05-2019 #6
after comparing the two boards i think i could match most of the wiring up. the only ones i am unsure are marked up on the YOC335 board as DIR +, DIR- and PUL+, PUL-
on the TB6560 board they are CW+, CW- and CLK+, CLK-
it doesn't look like the EN+ - are usedLast edited by Jed Clampit; 25-05-2019 at 07:21 PM.
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