4 Axis CNC Stepper Motor TA8435H Driver Board Mach 2 3 question

[mandiares]

@mandiares
Be carefull with the relay use in your shematic.
You may have a little lower mains voltage and safety rewstrictions there.
However I checked the board layout on my 5 channel board and would NOT RECOMMEND connectiong the relay directly to live mains.
The trace distances on the board are extremly tiny and only recommended for voltages you what to have been accessed by your kids safely.


Peter

Relay wil be used to turn on/off a Porter Cable router at 127 VAC by M3/M4.
What can you suggest to avoid risk of burn.

[nicotrial]

hello i have these motors and wanted to know if they would work well on this driver board please help since this is my first motor and driver i am buying
the motor is

http://www.apicontrols.com/newapi/products/m23step.html


AMERICAN PRECISION INDUSTRIES MODEL# M232-04-C2 DUAL SHAFT
Rated for: 4.3 VDC @ 1.8 Amps
1.8 deg step angle bipolar wiring 8 leads 2.6 ohms/phase
Torque rating: 100 oz-in. static
Body: NEMA23 flange x 3-1/4"L.
Front and rear shaft: 0.250" dia x 3/4"L.
30" shielded cable with ground wire

[Stuff]

New Member
Hi,
I also recently bought a 4 axis board from China, for the price you won't do
much better, but don't go looking for any support they provide very little.
The information I did get out of them in the end was partially incorrect anyway.
It looks as if there has been a design change in the boards currently offered.
Most of the E-bay ads refer to "The semi-flow uses the 555 chip", my board
does not have any NE555 Chips on it, although I think some earlier models
may have. My board uses 74HC74 then Optoisolator chips on the inputs.

It seems if you don't understand English and or have no clue about electronics
whatsoever that a Copy and Pasted description works in E-bay when selling your
product from China. If you look carefully you will see that the same vendor may use
one of many entities to sell the same item in E-bay.

So the long and short of it -
The 3, 4 and 5 axis Chinese boards most commonly sold should work ok once
you sort out which pins on the port to use. Don't totally rely on any
information supplied or E-link provided to for the correct wiring.
You may have to get an electronics person to help you out to decipher the
correct pins to use if things don't work as expected.
The boards are cheap, support is virtually non existant, you get what you pay for ~ ;o)

On my particular board I was interested in the DB-15 Manual port as a
Manual set up interface. The information eventually supplied was totally incorrect.
I sorted it out in the end myself and now have a neat Remote Box to use.
The DB-25 parallel port information was correct but the Manual and Limit
port info was wrong.

I did send the seller information I had discovered including pictures pointing
out where they were wrong ( in English and my best Chinese translation of )
Have not had a reply as yet, a month later.

Just as a matter of interest, they say that up to 36V DC can be used on
these boards ( technically correct ) but the 5V and 12V or any 78XX type
Regulators are usually rated to 36V. But they can run very hot, even with a
heatsink if you use 20V or so and above. Keep an eye on that.

2 ¢ worth.

[dilbert0815]

Relay wil be used to turn on/off a Porter Cable router at 127 VAC by M3/M4.
What can you suggest to avoid risk of burn.

It's not so much burning that I would be afraid of.
There is a good chance that the isolation of the life mains is broken and your controller box or your mill would show main potential on the housing.
That would be a severe safety issue.

I would suggest to use an additional relay or solid state relay that is certified for mains application (110...240V).
The most important is to have save isolation distances for all pins and wires connected to mains.
Relay coil voltage could be taken from your DC supply to not load the 12 and 5V regulators any more.
I'm planning to use an additional 24V relay.
Possibly somthing like this: http://www.findernet.com/comuni/pdf/S4CEN.pdf

Peter

[mandiares]

OK Dilbert.

Let's me know your results. Please.

THX

[MDF_Markazi]

Advice Best Motor For 5 Axis TA8435H Driver

Hello All

In the enclosed Pic which one Stepper Motor is better for 5 Axis TA8435H Driver

Do you think 23HS8603 is best.

Very Thanks.

[dilbert0815]

Advice Best Motor For 5 Axis TA8435H Driver

Do you think 23HS8603 is best.

This motor is unipolar (6 wire).
So the motor coils need to be used in series.
I think this would reduce the maximum current you could use.
!,5 Amps with the coils in series may be to much for the motor to handle.

[MDF_Markazi]

If I uses 23HS8603 series :

23HS8603(unipolar) 1.5 A- 4.5 Ohm - 10 mH - 1.4 Nm - 6
If bipolar series : - 1.06 A- 9 Ohm- 40 mH- 2.1 Nm 4


BIpolar series (UNIvoltage X 1.4 and UNIcurrent ÷ 1.4) , Ncm *1.5
6.75V 1.5A => 9.54V 1.06A


If I Buy 4 Motor 23HS8603 can board support current & voltage ?
Is that in the list have best selective exist?

[tiffyted]

Hi to all,

I have a professionaly built 5 Axis controller supplied by Heiz using the TA8435 controller chips and that is rated at 32v 8A, and supplied with a machine fitted with 2.5A motors.

On the board I purchased on ebay, all the electrolytics installed were 25 volt. With a 24 volt power supply (as recommended) I considered these to be likely to be stressed and soon pop, so I replaced them with 50 volt types. I am now running the board with 28 volts. The motors I have connected for testing are 8 wire connected in series and rated at 6 volt 1.8 amp unipolar.The increased voltage gives a much better motor response and higher RPM.

As stated by New Member, the 7812 and 7805 Voltage regulators will run too hot at voltages above about 20 volts. However at voltages below 19 volts the 12 volt regulator will not function correctly and cause the fan to run too slowly to give efficient cooling to the TA8435 The overheating of the regulators is easily overcome by fitting a small fan similar to the fan on the heatsink alongside the regulators blowing cool air across the fitted heatsinks. With the fan fitted mine are still only warm to the touch after a couple of hours running.

It would be possible to remove these and replace them with a small daughter board that uses the LM2575 simple switching regulators if they are of concern.

As of yet I haven't had the time to connect the board up to a machine, but the final arrangement will use 2.5 Amp motors, this should allow cool running without too much loss of torque

I have connected a simple 555 astable to the DB15 manual input and also used MACH 3 to control the motors and all seem to work very well.

Strangely the DB9 on my board only has connections for 4 limit switches. I would have expected 5 ( 1 per axis)

New Member
Hi,
I also recently bought a 4 axis board from China, for the price you won't do
much better, but don't go looking for any support they provide very little.
The information I did get out of them in the end was partially incorrect anyway.
It looks as if there has been a design change in the boards currently offered.
Most of the E-bay ads refer to "The semi-flow uses the 555 chip", my board
does not have any NE555 Chips on it, although I think some earlier models
may have. My board uses 74HC74 then Optoisolator chips on the inputs.

It seems if you don't understand English and or have no clue about electronics
whatsoever that a Copy and Pasted description works in E-bay when selling your
product from China. If you look carefully you will see that the same vendor may use
one of many entities to sell the same item in E-bay.

So the long and short of it -
The 3, 4 and 5 axis Chinese boards most commonly sold should work ok once
you sort out which pins on the port to use. Don't totally rely on any
information supplied or E-link provided to for the correct wiring.
You may have to get an electronics person to help you out to decipher the
correct pins to use if things don't work as expected.
The boards are cheap, support is virtually non existant, you get what you pay for ~ ;o)

On my particular board I was interested in the DB-15 Manual port as a
Manual set up interface. The information eventually supplied was totally incorrect.
I sorted it out in the end myself and now have a neat Remote Box to use.
The DB-25 parallel port information was correct but the Manual and Limit
port info was wrong.

I did send the seller information I had discovered including pictures pointing
out where they were wrong ( in English and my best Chinese translation of )
Have not had a reply as yet, a month later.

Just as a matter of interest, they say that up to 36V DC can be used on
these boards ( technically correct ) but the 5V and 12V or any 78XX type
Regulators are usually rated to 36V. But they can run very hot, even with a
heatsink if you use 20V or so and above. Keep an eye on that.

2 ¢ worth.

[DEHiCKA]

Here is my setup for 5x channel board version:



Works perfect. Be sure to set Step pulse and Dir pulse in the motor settings to 3us or above. With 2us it's loosing some steps.
Inputs are pins 1-4 on DB9 -> 10-13 LPT with ground on pins 6-9 DB9

[vicsrc]

I have a chinese board and have been reading the thread about how hard it is to determine the pin assignments.
I am having the same problem.
My board is from the very cnc ebay store.
Its a 4 axis board and the manual is very limited on info.
My problem is that when I connect the motors to the outputs and program Mach 3 the way the manual says the motors wont work.
There is no drive signal going to the motors because they still turn freely by hand. If I can figure out how to upload the manual and a picture of the board maybe someone can figure out what the proper pin assignment is in mach 3.
Also it arrived damaged and a new board is on the way. The damage was a component that has no markings on it and the seller said it was a coupling.
It had pulled away from the board and had a thin wire wrpped around the soldered post so I resoldered the wir to the post not knowing what the part was I dont know if this is a fix or the part needs to be replaced.
The onboard relay works when I reset mach3 so part of it is working.

http://www.happy-ebuy.com/pdf/4%20Ax...er%20board.pdf

The file is too big to upload here so this is the website. Here is the broken part.

[Stuff]

Hi vicsrc,

The broken part looks like an Inductor, probably part of the power supply.
You may be lucky and the board will still run with your fixit.
Looks like the board you have is the type that may actually have
NE555 Chips on it.
Not the same as mine though.

Try disabling the E-Stop in the Mach3 setup or find the DB-9 Limit Port
Switch pin for the E-stop and Ground/Earth it or nothing will run.
The Emergency Stop button in Mach3 will set/reset correctly if all is ok.
You should be able to operate the Spindle, Torch relay from Mach3 also.

If you run your finger across the DB-25 Parallel Port pins you may get
some sort of reaction, the input/step LEDs may flash and the motors
will twitch slightly. This gives a rough indication something is working.

I seem to have misplaced my correct DB-25 wiring diagram, I'll look for it.
Don't think it will be much use on your version of the 4 axis board.


Good luck.