Reply with QuoteOriginally Posted by kolias
ok, I finally got it; these two terminals are not terminals but rather the screws which support the heat sinks to the voltage regulators.
Someone should have pointed out to me; we are here to help each other, not?
Manual provided by Miniracer31.
Patience and perseverance have a magical effect before which difficulties disappear and obstacles vanish.
ok, I finally got it; these two terminals are not terminals but rather the screws which support the heat sinks to the voltage regulators.
Someone should have pointed out to me; we are here to help each other, not?
On the attached picture, where the arrow points there are 12 tiny holes on the board with 1 marked on one end and 12 marked on the other end.
Anyone knows what they are for? Just soldering joints?
Does anyone have the wiring or block diagram of this board?
Kolias. Those are not terminals. Those screws are holding the power regulator chips to their heatsinks. Generaly the heatsink connection of those chips are connected to ground so, whatever power supply you try to connect there will get short circuited.
Thank you renatopub, look at post #82
Much appreciate your help
BTW, were you able to find a block diagram of your board?
I have a 5 axis controller similar to yours:
My pin setup DB25:
1 YA - Pulse
2 XA - Pulse
3 ZA - Pulse
4 YA - Dir
5 CA - Pulse
6 DA - Pulse
7 ZA - Dir
8 CA-Dir
9 DA-Dir
14 XA-Dir
16 Freigabe für die Achsen? (Allow)
17 Relais Kontrolle
10 Limit1
11 Limit2
12 Limit3
13 Limit4
I have to set "active low" pin 16 in mach3 to run it. Without active low, sometimes it runs, sometimes not.
My board does not mach exactly any of the diagrams posted here. But I don't care a lot about it. The Chinese manual tells what the pins are (I have posted it before in this forum).
What do you want to find in the diagram?
Thanks moog for the pin layout
Regarding the block diagram, I like to study them, it tells you how things are working.
I made the attached for mine, still working to improve it
Looks good Kolias.
The power resistors values are in fact 0.5 ohm (mF are for capacitors). This information about the 0.5 ohm resistors is important, as it tells that the chips output is set to 1.6Amps. A vital information for people choosing a motor to work with this board.
When you get some time, please point in my diagram any other mistakes / additions you may find. Electronics is not my strong field. I will revise it and post it again.Thank you
Where did you get this pin layout? If your board is similar to mine, my one page pins layout is not the same.
Can you post a picture of your board?
This is my board.
I have a english and a chinese manual, but both have false pin layout, so i test it myself.
Last edited by moog; 06-24-2009 at 09:30 PM.
This is my board.
I have a english and a chinese manual, but both have false pin layout, so i test it myself
Hey moog, you are right, our boards look the same but yours is 5 axis. Thanks for taken the time.
You must be pretty good to test the pins yourself. I have no idea how to do that. If it's easy and you can spare the time, please let me know a bit how you go about it. I don't trust the manual I have either
I have had luck, mach3 was running with this board after i follow the manual.
Some axis doesn't work.
I test it with mach3, one bit pulse, one direction and write it down. Not a great thing, but perhabs helpfull.
Greater problem was the thing with active low, because all was working but suddently nothing was working.
Last edited by moog; 06-24-2009 at 10:15 PM. Reason: advantage
ok, I will keep an eye on the active low. Thanks for the tip
Hey renatopub, you bring a very good point here. I thought the Toshiba chip had a current output of 1.5A average / 2.5A peak. How come now the limit is 1.6A ?
I bought my motors and they are 2.1A with Bipolar series wiring. Has anyone used motors with this board at 2.1A ?
This "1.5A average / 2.5A peak" statement in the datasheet of the board is most misleading.
These figures are absolute maximum of the chip and say nothing about the actual current for the particular setup of our boards.
These chips have a current control capability that uses the voltage drop in the resistors to control the current.
When one uses these chips to build a board, the choice of resistors will give the phase current by the following formula:
I = 0.8 / R (when pulses are present)
I = 0.5 / R (when board is iddle)
For our board R=0.5 so I= 1.6 Amp when stepper is running and I= 1.0 Amp in idle.
This is a very important fact for these boards that everyone seems to ignore. These values are FIXED for as long as those resistors are in the board.
I asked my seller (iwannebuy) how to use the manual port, but get only the english manual.
Can you ask your seller how to use it?
You seems to know a lot my friend and is much appreciated. Thank you
Mr. iwannebuy is useless to ask any questions. Either does not speak English or he knows nothing about the boards. I got mine from him too.
The manual port is the DB-15 outlet on the board and what he sent you indicates the pin arrangement. Now how good this arrangement is it's anybodys guess.
In other words, we are on our own. Dont spend your time asking the Chinese questions. Here you will find much better help
