2-8
(2) Excitation Sequence
As shown in Table 2-4, the LTP3445 feeds the paper in the normal direction when the motor is excited in
the order of step 1, step 2, step 3, step 4, step 1, step 2, . . . . On the other hand, to rotate the motor in
the reverse direction, drive the motor in the reverse order: step 4, step 3, step 2, step 1, step 4, step 3, . .
Sequence
Signal Name
Step 1
Step 2
Step 3
Step 4
A
Low
High
High
Low
B
High
High
Low
Low
A
High
Low
Low
High
B
Low
Low
High
High
Figure 2-4 Input Voltage Signals for the Sample Drive Circuit (Motor)
H
L
H
L
LL
L
H
L
H
L
A
B
A
B
1 DOT LINE
Table 2-4 Excitation Sequence
Содержание LTP3445
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