need help with a stepper driver

There are some Cantonese speaking people at work, but I'm on day off today, so it would be tomorrow before I could see if they would translate the datasheet for you.

Looking at the wiring diagram from the link you posted.

It does indeed look as though there are three + connections to 5v (perhaps there are 3 internal modules, I don't know). I thought MF might be the 'motor frame' connection, or to you and me, the ground/-v connection, on the other hand there is a timing diagram of a low to high pulse requiring 1uS rise time, so I'm not entirely sure. The wiring diagram has bracketed text underneath that wire, which normally means used or not used under certain conditions.

As there is a timing diagram attached to the PU and DR, as you surmise the PU might well be the PWM drive pulse active on the high to low edge, my first thought was the same as you for DR, possible direction, but by the looks of the timing diagram it does something by going high to low 2.5uS whilst PU is high and before the PU pulses start, MF needs to be low to high before DR goes low.

D4,5,6 switches are indeed the pulse step setting. D2 appears to change the way PU and DR relate to each other. D1 looks as though it might either change the PWM frequency or perhaps provides always on, always off and PWM modes of driving a motor. D3 haven't the faintest idea .

*******************************EDIT**************************************

PU = PWM = motor speed.

DR: Depends on setting of D2 , if D2 is ON it looks as though DR is the direction control by voltage, if D2 is OFF then it appears to require a pulse of some kind, without an actual translation that is just a guess.

D3 is not used by this module currently.

Colin

Message was edited by: Colin Barnard   : Just looked at your images properly.

Have you tried Google Translate? I have it built into my browser so one click and its all in english.... Ahh OK I see what you mean now, I gat all the slaes stuff in english but since they have embeded the data sheet as a picture Google won't translate that

exactly    , the useless stuff i could just Translate it all, what i want is all as pictures sadly

OK, just asked someone here and this is what I could make out.

MF - motor output signal or some form of feedback (Does not need to be connected)

V+ - DC Power

V-  - DC Power

A  - Stepper motor phase A

B  - Stepper motor phase B

TM - Zero point (we think)

Im - Current in coil

PU - Stepper pulse (D2-on step on rising edge, D2-off step on falling egde) we think

DR - Direction D2-off direction control signal, D2-on reverse pulse

Also in teh data sheet were it says asomething then 0 - 0.5V that is the low required, 4-5V that is the high required, 2.5us is the pulse width. The PU/DR + take 5V and if >5V is applied a current limiter is needed.

I think that should get you somewhat started on the understanding what is what but to get it aculy working it seems liek there is a controller that plugs into PU- and DR- as can be seen in teh picture n ttop right corner of teh data sheet.

(sorry about spelling, writing this quickly while at work)

thank you very much for your help, appreciate it alot

please dont mind but i did not understand you completely because i have very less knowledge and experience, even my university professors are not very helpful with outside syllabus topics 

ok so what i understand from you is

ill just give 5V in all the " + " ports 

the PU ill just connect the microcontroller and make it give no off signals with 1uS delay depending on the speed i want 

D1   says its for self test  when ON, i guess its just used to check if the motor is running and the connections are right 

D2  says if  OFF = PU + DR    i still need little more detail info on DR  if its not direction then what is it exactly 

              if  ON   = CW/CCW    i have no idea    whats CW whats CCW ???

MF  , what is  motor frame ???

thanks alot, appreciate ur help very much

ill have to read ur reply a few times trying to understand every bit since i am very new to this 

thank you

I would input 5V to PU/DR+ and then connect the other connections as described (or how you understand them to be connected) and then just try diffrent things. I might suggest if you can get an O-scope or use one at the university that would give you better info then connecting to a motor at this point.

And you do NOT need to connect MF to anything for now.

there are four + ports so ill give 5V to all

but PU and DR shouldnt they be connected to a mircocontroller ????? or any other controller

ill ignore MF 

and what about TM whats zero point, little more detail please is it some thing like reset or start position

and the +V and -V  do i put like 24 V  there  its say DC24-80V    

just trying to be safe, i hope i dont burn it 

I understand what you are saying about PU/DR, but from the schematic it looks like the pos are cennected  5V and neg to the controller (the controller could be used a s a pull down instead of a pull up, I am assuming). If you do this be sure the uC pins are rated at 5V.

TM we could not fully understand but we understoof something about zero point, what that means we are unsure.

+V and -V does look like it is connected to 24V

Hope someone else can help explain teh setup, these are my assumtions from what I understood, maybe someone else can give some input as well.

CW = Clockwise.

CCW = Counter Clockwise  or if you prefer anti clockwise.

Will see what the Chinese people at work make of the datasheet.