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30
April, '89
3. Motor Control
The document feeder has three servomotors, each of which is controlled by
its own motor control IC and driver IC.
(SPEED DATA, START/STOP, and FORWARD/REVERSE) to each motor con-
troller.
Each motor controller IC monitors the pulse signals produced by an encoder
on its respective servomotor.
output to achieve the proper motor speed.
The power line (+24 volts) of each driver IC is protected by a 3 ampere
fuse.
The DF CPU sends three signals
Then, the motor controller compensates its
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