I have two Responsyn HDM-185-2000-8 Stepper motors that drive a 20" telescope.
The motors specifications are Wiring: 8 phase, 9 wire, Rated Current per phase 0.875 A (Total 3.5 A).
The motor operation provides 4000 steps per revolution in Half Step mode.
Logic Sequence (CW):
Pin 1 = D!
Pin 6 = B!
Pin 2 = C!
Pin 7 = A!
Pin 3 = D
Pin 8 = B
Pin 4 = C
Pin 9 = A
Pin 5 (power)
The Half-Step Sequence:
1.... A C B D..................................
2.........C B D..................................
3.........C B D A!..............................
4.............B D A!..............................
6.............B D A! C!.........................
7.................D A! C! B!......................
8.....................A! C! B!........................
9.....................A! C! B! D!....................
etc.
Does anyone know where I might find one?