RANA Systems Elite Controller, User Manual

Page: 166 / 328

ELITE SERIES USER MANUAL THEORY OF OPERATION
7 . 1 . 2 . R e a d / W r i t e / C o n t r o l L o g i c
The electronics are packaged on one PCB which
contains:
7. Read/write head positioning drivers.
2. Write current drivers.
3. Read amplifier and transition detectors.
4. Write protect detectors and latches
a. Diskette
b. Panel switch
5. Drive select circuits.
6. Drive motor control circuits.
7. Head selection detection and latch
circuits (Elite Two and Three).
7 . 1 . 3 . D r i v e M e c h a n i s m
The drive motor operates on 12VDC and rotates
the spindle at 300 RPM through a belt—drive
system. The motor speed is controlled by a
feed—back from a tachometer inside the motor. A
registration hub clamp that moves in conjunction
with the door closure mechanism centers and
clamps the diskette onto the spindle hub.
P a g e 7 - 3