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lancut
11-28-2008, 10:35 PM
Hi, newbe here starting in the cnc hobby. I got a driver that will accept 2phase 4 wire stepper motor, while looking for one, i found info about a KL23H276-30-8B
nema23 motors. The pdf info sheet shows a 8 wire setup, but the Bipolar(pararel) connection shows 4 wire connection. It is this possible? If so, then the "extra" wires should be left alone or....? Thanks.:confused:

jalessi
11-28-2008, 10:48 PM
Bronek,

All eight wires should be connected, see the attached diagram.

Welcome to the Zone.

Jeff...

lancut
11-29-2008, 07:51 AM
So what kind of stepper motor will work with 4 wire connection? thanks

jalessi
11-29-2008, 08:03 AM
Bronek,

Any 2 phase stepper motor will work with a "Bipolar" driver.

you can use a four wire, six wire or eight wire with a Bipolar driver.

Unipolar steppers will work on either Bipolar or Unipolar drives, just follow wiring instructions.

A four wire stepper is Bipolar only and will not work on a Unipolar driver.

Jeff...

lancut
11-29-2008, 08:45 AM
Tank you for prompt reply Jalessi. So how I wire the 8 wire stepper motor in to the 4 wire connector block? Thanks.

jalessi
11-29-2008, 11:06 AM
Bronek,

What model Stepper Driver do you have?

Jeff...

lancut
11-29-2008, 06:36 PM
4 Axis CNC Stepper Motor TA8435H Driver Board, but no motors yet...

jalessi
11-30-2008, 12:30 AM
Bronek,

In order to provide a wiring diagram of your stepper motor to driver board, please post the exact manufactures make and model numbers of driver board and stepper motors.

The wiring layouts will vary from one manufacture to another so you need to be much more specific.

http://tinyurl.com/56qlev

"TA8435H" Driver Board is the IC maker "Toshiba", not the driver board make and model.

The driver board manufacture determines what the final layout, wiring terminal configuration etc... will be.

Right now you are taking the horse before the carriage.

Jeff...

lancut
11-30-2008, 08:13 AM
Hi Jeff, Sorry for not being more clear on my replies. The driver board I have purchased on ebay is located here:

http://cgi.ebay.com/4-Axis-CNC-Stepper-Motor-TA8435H-Driver-Board-Mach-2-3_W0QQitemZ330290039285QQihZ014QQcategoryZ4660QQcmdZViewItemQQ_trksidZp1742.m153.l1262

The reason for not providing more info is that I just don't know....

I think I found the stepper motors for it , they are NEMA 23 motors. Below is the info about them

KL23H276-28-4B (Dual Shaft), from
http://www.kelinginc.net/SMotorstock.html

Hopefully this will get me going. Thanks Jeff for your patience, you know ... dealing with rookies

jalessi
11-30-2008, 08:37 AM
On the right side of the board you will see several green terminal connectors with the letters " A+ A- B+ B- " silk screened next to them.

See picture below:


You would connect the motor in series because of the low current rating of the driver you are purchasing.

See attached 276 series wiring diagram:

I believe the drive is a bad choice for the motors, if you are on a really tight budget a Hobby CNC board would be a lot better however still not my number one choice.

Jeff...

lancut
11-30-2008, 11:00 AM
Hi Jeff,
yes, after I purchased it I realized that it not the best... but it must do for now. The machine that I'm building is small, with fixed gantry, the table size12X12", so I think the driver and motor combo should work. Thanks again for your help.

Bronek

jalessi
11-30-2008, 11:11 AM
Bronek,

Think about using a 20 TPI screw, the machine will run slower however the reliability will be much better.

Jeff...