Commodore 8250LP - VIII. INTERFACE; Stepper Motor Input and Phase Table

C-2- Step Motor Input Requirement
The motor is a bifilar wound, four phase stepper which
generates a 1_8
0
step with single phase stepping.
BROWN
RED
YEL LOW __ S:=/.lM~D~-..>/- __ ~ ,..,..,""t"V""""
•
~
~
/iii
U
Q
~
-c;
r.l
;;;
:::
0
To Energize: Both red center taps go to +12V DC and go to
+5V DC for unselected drive. For selected drive an appropriate
two phases are connected to ground.
PHASE T • .!,.BLE!T\W PHASE DRIVE
TRK POSITION
I
S~ID-3
I
S~ID-2
I
S~u)-4
I
S:''D-l
(YELLQ\y)
(BRQ\iN) ( OR...!,.NGE) (BL..l,.CK)
4 x n +0
I
LQ\y·
I
HIGH
I
HIGH
I
LO\y·
4 x n
+1
I
Lo\v
I
LQ\y
I
HIGH
I
HIGH
4
x n
.;-2
I
HIGH
I
LO\v"
I
LQ\v
I
HIGH
4 x n
~ . .J
I
HIGH
I
HIGH
I
LOI(
I
LOli
( 12)