[coxicomaniac]

Hi Everybody,

First post on your marvelous forum I am reading now for a while.

I had the opportunity to buy for few euros a chinese CNC router (GWEIKE). The motion board burned after what I decided to rewire the machine and to add some features (limit switch, watercooling start/stop...)
I bought a simple AKZ250 usb motion board (I want to use mach3).
The installed driver are Panasonic MCDDT35200003 for the X and Y axis, and Panasonic MBDDT2210003 for the Z axis.

I searched the web to understand how to wire my motion board to the driver but.... I have no clue how to do it right...
Here is what I found.

Attachment 217940

I will appreciate your help to understand how to wire the driver...

Thanks a lot

Regards

Patrick from France

[coxicomaniac]

Hello guys,

as I see no one can help me understanding how to wire this driver.

Maybe some of you know if I can change the driver for a cheap ebay one and keeping the panasonic motors...


Thank you

Patrick

[coxicomaniac]

Hello,

Its me again!!!
I finally found more informations about the panasonic driver!!!Attachment 218542

And here the motion board diagram
Attachment 218544

So tell me if I am wrong :
D+ => Pulse 1
P+ => Signal 1
D- => Pulse 2
P- => Signal 2

Thanks

Patrick

[doorknob]

The second diagram is telling you the following:

D+ means Direction signal positive 5 volt connection to optoisolator LED anode (of the driver board)

P+ means Step signal positive 5 volt connection to optoisolator LED anode (of the driver board)

D- means Direction signal "current sinking" connection to optoisolator LED cathode (of the driver board)

P- means Step signal "current sinking" connection to optoisolator LED cathode (of the driver board)

On the diagram, those signals are shown for the X axis only, however there are similar hookups for the Y, Z and A axis drivers.

[coxicomaniac]

Hi,

On the wiring diagram some 220 Ohm resistors are plugged between P1/P2 _ S1/S2

Are they already included in the driver or shall I add some....????


Patrick

[doorknob]

I don't really fully comprehend the first wiring diagram, so this is just a guess.

It looks like the terminals in question are intended to connect via a shielded, dual twisted pair of wires to some external equipment with the signal running over an optoisolated 10 mA "current loop" interface.

So, my interpretation of the circuitry inside the box at the right of the diagram is that it diagrams the configuration of the remote equipment as it connects to your wiring diagram, and that the 220 ohm resistors are internal to the board. A formula is given for determining the value of "R", the resistance to be used at the remote equipment, such that based on the voltage used on the line you can figure out the appropriate value for R to give you 10 mA of current.

But since I do not have a clear understanding of the details of the equipment in question, I could be mistaken.

[coxicomaniac]

Other question...

On the wiring diagram of the driver I see 12V to 24V

The motion board deliver a 5V output...

Is it going to be a problem??

[coxicomaniac]

Thank you for your answer.
I will think about it... the diagram is not easy to understand of course.

[doorknob]

Other question...

On the wiring diagram of the driver I see 12V to 24V

The motion board deliver a 5V output...

Is it going to be a problem??

The first diagram that you supplied does not look like a stepper motor driver diagram.

Are you sure that it is what you think it is?

The 12 to 24 volt indication at the right of the diagram seems to be related to some external device that is signalling via the current loop. It does not appear to be the power supply voltage required by the board. So again I question whether the diagram that you are using represents what you think it represents.

[coxicomaniac]

Here the link with the driver's datasheets
http://pewa.panasonic.com/assets/acs...a4-catalog.pdf

It frustrating having a useless cnc router !!!! But I am finding a solution for sure!

[doorknob]

You are posting in a subforum for stepper motors and drives, however the drives that you are using appear to be for servo motors.

While it looks like one of the modes supported by those drives can handle a step and direction interface (via differential signal inputs), I have no direct experience with such drives.

You might want to post your questions in the servo motor/drives subforum:

Servo Motors and Drives