Toshiba e-STUDIO453 Service Manual page 128

Input/output signals
Clock input
Set the direction
of motor rotation
6
Cut OFF the drive
output
Voltage to set value
for the motor current
Set the
exicitation mode
(1) to (3)
Reset
e-STUDIO350/352/353/450/452/453
SCANNER
Motor is rotated by setting number of pulse.
MOTCLK Input * Internal circuit of the motor driver works when the first
pulse be-comes ON and the last pulse becomes OFF.
The direction of the motor rotation is determined by setting level of
signal.
"L"....Clockwise direction (as seen from the output shaft)
MOTDIR Input "H"...Counterclockwise direction (as seen from the output shaft)
Note: When the MOTMD3 is "L", do not change the rotation direc-
tion within 6.25µs before the first pulse of the MOTCLK becomes
ON and after the last pulse becomes OFF.
Excitation drive is forcibly turned ON/OFF.
MOTEN Input "H"...Normal operation (Excited)
"L".....Excitation drive is forcibly shut OFF (Not excited)
MOTREF Input Motor wire current value is set in the range of 0 to 1.7 (A)/phase
by applying the analog voltage 0 to 5 (V).
Set the excitation mode.
MOTMD1 to 3 Input Note:Do not change the setting within 5µs after the first pulse of
the MOTCLK becomes ON and the last pulse becomes OFF.
Reset for the whole system
Internal circuit of the driver is initialized by setting the motor to "L"
MOTRST Input level (pulse interval: 10µs or more).
The motor drive circuit is automatically reset when the power is
turned ON.
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