Chinese 6040 stepper drives

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

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 ?

John

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

Attachment 25798

Attachment 25799

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 ?
Attachment 25800

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

Attachment 25801

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

Attachment 25802

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

Quote:

---

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

---

i have managed to get my hands on a TB6560 v2 but it looks nothing like the one in the photo you posted (see attached)
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 ?

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 used

yes your correct

the odd thing about these boards is the enable is a negative logic input
the board is enable with no input and disabled by a 5V enable signal !!!

the TB6560 CLK = YOC335 board PUL

TB6560 CW = YOC335 board DIR

connect the +5V wire (or wires) from the breakout board to the +CLK & +CW (positive clock & positive clockwise

the BOB's - PUL (negative pulse ) to the TB6560 - CLK (negative clock)

the BOB's - DIR (negative direction ) to the TB6560 - CW (negative clockwise)


without the data for the original drivers or motors we don't know what the motor current is

I would start with switches SW! to SW3 &S1 set to 1.5A
S2 for stop current 50%

if the torque is lower than with the YOC335 board increase the current in small increments and re test
if you set the current too high the motor will over heat

as we don't know the setting for the number of microsteps
try S3 &S4 set to 8 micro steps
if the axis moves too far set it to 16 micro stepps

you may need to make other adjustments in Mach3

John

ok that makes sense John :thumsup:

now to the switches, i thought this might be easy but no lol

on the YOC335 i have

pulse/rev = 1600
decay mode = 0%
peak/rms = 3.5/1.8
switch 7 set to half current

so am i right in thinking the TB6560 should be set like this
sw1 = on
sw2 = off
sw3 = off
s1 = off
giving a working current of 1.6

s2 (stop current) i am unsure off

s3 = off
s4 = on
the above two switches are marked as excitation mode which i presume is the pulse/rev so i have it set to 16

s5 = off
s6 = off

having watched this video https://www.youtube.com/watch?v=KRoe4_XM884 i think my voltage should be set to maximum ie SW1,2 and 3 on and S1 off giving a current of 3amps ???

and after watching this video https://www.youtube.com/watch?v=Oy8vDJTGCY4 the S2 should be set to off as i don't want the motor to move

the motor current set by SW1,2 , 3 and S1 depend on your motor
the one in the youtube video may not be the same as yours

if it has a partnumber that enables you to download the motors data sheet
it will make it easy

without the information I would start at about 1.5 A

the YOC335 switch 7 set to half current = the TB6560 S2 (stop current) set to 50%

with a 200 step/rev motor
the YOC335 pulse/rev = 1600 gives you 1600/200 micro steps = 8

so you need to set the TB6560 switches S3 & S4 to 8 (both to 1)

John