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.

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 ???

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 ???

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.

OK, I have spoken to the Chinese gentleman at work, unfortunately his English is not brilliant, but I think the gist of what he said is -

1. The datasheet is poorly written.

2. If D2 is OFF,  step pulse signal is enabled.

3. If D2 is ON direction control is enabled  - if it is low (0->0.5v direction is one way), if it is high (4-5v) the direction is the other.

The pulse width on the DR must be 2.5uS wide.

The input impedance of the DR line in the controller is 220 Ohms.

So, my guess is that with D2 off, you cannot reverse the motor direction, it is clockwise only, D2 ON, allows motor direction change via the DR line.

The 24-80v is the supply for your motor.

The datasheet mentions the zero point but I'm told gives no further information other than the TM relates to it..

Colin

i connected this motor to driver 

its a 6 wire stepper motor i found the +A -A +B -B wires and connected it to the driver in those ports 

connected 24V to +V and -V

first ran the motor in test mode which is D1 on, it runs fine when i keep the division table to 8 or higher ( as you can see in the driver pictures ) that is D6 off D5 off D4 on

division table set to 8 the motor runs the fastest and runs slower as i go higher that is 16 32 64 128

what is this division setting exactly  ???

then i programed an arduino to give an pulse of width 1uS connected it to port PU and gave 5V in the first + port fron the top, it dint run then i gave 5V in the 2nd + port, the motor still does not run, i connected 5V to DR as well then the motor started running  but was very slow ( 1 rev in 6 secs) when the division setting is set to 8

then i set the division setting to 1 that is D4 on D5 on D6 on , then the motor runs some what fast  ( 5 rotations in 1 sec ) ( D2 is on )

Hello,

A stepper motor have has his name said a step. Generally  one step turn the rotor about 1.8° so to do a entire turn you have to send 200 pulse to PU.

If you put a division, you reduce the angle. so divide by 2 one step will turn the rotor by 0.9° so you have to send 400 pulse to PU to do one rotation.

What is the frequency of your pulse, you said a width of 1us but not the frequency.

Syncerely

Man Long

hi,

i am not sure about the frequency, what i am doing is, i connected the arduino to give the pulse and loaded the program of the blinking LED and changed the delay to 1uS between  the on and off signal

If you see the blinking led that the frequency is too low. You have to increase the frequency.

If for example the frequency is 10Hz, the LED blink every 0.1s, to do 200 pulses you have to wait about 20 seconds. And this without division.

So you have to increase your pulse frequency, the number of pulse within 1 second to rotate your motor fastly.

The speed of the motor is the same as the speed you send your pulse.

More you use division (1,2,4,8,...) more you will be precise but you have to send 1,2,4 times more to do 1 rotation

Man Long

i just realized a small mistake i was making in arduino program *facepalm* that i was taking to be microseconds was millisecond i was giving an on/off signal by the arduino with 1 millisecond delay in between [ delay(1) ], so i found an other command used for making delays in microsecond [ delayMicroseconds(500) ] so i changed the program a little and noticed that the max i can reduce it was 500 Microseconds

now the on/off signal is with the delay of 500 Microseconds [ 1 sec = 100000 micro sec ]

so now the motor is running almost 3 times faster  both forward and reverse

one more thing, i have not made the arduinos and the drivers ground common, i have not used arduinos ground at all i have only taken the pulse from arduino and DR (direction) signal