6 STEPPER MOTOR
6.1 Excitation sequence Full-Step
The motor is driven in the forward direction if its excitation phases are switched as per the following steps:
(MOT1A)
(MOT2A)
(MOT1B)
(MOT2B)
H
L
H
L
H
L
H
L
STEP1
STEP2
STEP3
STEP4
1 dot line
Excitation Voltage Waveforms
SEQUENCE
SIGNAL
MOT1A MOT2A MOT1B MOT2B
Step1
High
Low
High
Low
Step2
High
Low
Low
High
Step3
Low
High
Low
High
Step4
Low
High
High
Low
The paper feed pitch for stepper motor is 2 steps for one dotline (1 dotline = 0 .125 mm) .
6.2 Precautions
1 . An abnormal operation may extremely shorten the performance or service life .
2 . Do not hold the motor by lead wire or PCB .
3 .
The motor is subject to change for improving the performance within the range satisfying its specification.
4 . Please check the ratio print/pause to prevent the overtemperature on stepper motor .
5 . If the motor is driven by more than 24 volts we suggest to use a chopper driving, in order to reduce current, please
contact CUSTOM S .p .A . for further information .
25
