Hi. Sorry for english writing . I have about 10 stepper motor that they are 6 wire but my driver just have 4 wire to connect . how can i use the steppers. stepper motor: 1.8 deg / 1.7 a / TYPE 103H7121-1741 sanyo denki. thanks for helping
You can use either full coil or half coil. For full coil use the outside pairs and leave the centers untapped. Orange and blue is one coil(-B. and +B). red and yellow is the other (-A and +A).
This is a good resource for stepper motor wiring: Stepper Motor Hardware Interfacing Here's another, though it is more oriented towards 3D printers: Stepper wiring - RepRapWiki In case your wire colors don't match (or are all the same, like some of mine) a multimeter will make finding the pairs easy enough, just look for the two pairs of wires with the highest resistance, that's the full coil.
i try to drive another 6 wire stepper motor by 4 wire driver (a4988 and using cnc shield v3 and arduino and grbl ) in half-coil mode , in grblControl stepper motor run well but when i send g-code to arduino it dosen't work Properly, srepper motor run cw most of time OK but it run ccw NOT OK , it turns about 4 times and suddenly stop and have some noise . i check driver and every thing . why this happen? stepper motor : 1.8 deg /2.2 v /2 A FH6-1571 this is an example g-code that my stepper motor dosent run well on that.
On a 6 wire motor, there are actually 4 winding pairs. Two of the windings for each winding pair are connected, internal to the motor. This wiring scheme is set up so that configuring it as a Uni-polar motor is relatively easy. ---------> 6 WIRE STEPPER MOTOR <---------- ------------> W1 <-----------------> W2 <---------- 1 --------/\/\/\/\/\/\----|----/\/\/\/\/\/\--------3 .................................... 2 ------------> W3 <-----------------> W4 <---------- 4 --------/\/\/\/\/\/\----|----/\/\/\/\/\/\--------6 ................................... 5 Obviously, I can't know the exact wire designations of your stepper motor but, the above example will demonstrate the principal. If you want to run this motor in a series connected Bi-polar configuration, simply connect wire 1 & 3 to an "H-Bridge" and wires 4 & 6 to a second "H-Bridge". Leave pins 2 & 5 disconnected For connection in a parallel connected Bi-polar motor configuration, connect wires 1 & 3 together and, separately, wires 4 & 6 together. Wire 2 and wires 1 & 3 form one parallel winding pair that connects an "H-Bridge while, wire 5 and wires 4 & 6 connect to a second "H-Bridge".
hey its Deepak i have a nema 23 stepper motor (type:KH56KM2U001) 1.8Deg/step and 2AMPS and its a uni-polar we can change into bi-polar its not a problem my problem is in this specification of stepper motor we can use A4988 stepper motor driver is it works and how to change microstep vref=imax(8x0.1)x0.7 in this 0.7 its a full step i need 1/8 microstep how to change ???? vref=2.0x(8x0.1)x0.7 and on this 0.1 is driver A4988 in case we are using DRV8825 what is the value of it ????? vref=1.12 and i calculated this stepper motor its a right answer ??????? Show less REPLY
Hi Nima, I have the same motors, but I'm not sure which driver to use. the motor voltage is 2.2v and the a4988 is Vmin 8volts. How did you get it to work? what driver are you using? Thank you
