Fujitsu FTP-639MCL354, Product Specification

Page: 19 / 26

FTP-639MCL354 SPECIFICATION
A1NA02273-0354
Dept. to
control the original document
Date
Date
Rev.
Design
Design
Inspection
Inspect.
Changes made
Approv.
FUJITSU COMPONENT LIMITED
Name
Drawing
No.
Page
Submit to
19 26
3-8 Stepping motor specifications
(1) General specification (motor only)
Item Specifications
Model Permanent magnet type
Phase Two phase (bi-polar specification)
Step angle 9 degrees by 1-2 phase excitation
Winding
resistance /
phase
6
±
10%(at 25
℃
)
Rated voltage DC24 V
(2) Driving procedures of the stepping motor
①
Drive the motor with the 1-2 phase excitation of the bipolar.
②
The number of steps per dot line of printing
Excitation method Step No. Rotation angle
1-2 phase excitation 2 9 degrees /step
③
The reference excitation method is described below.
Method Excitation sequence (H: ON, L: OFF)
The 1
-2phase excitation
A
B
_
A
_
B
One dot line
(3) Driving the bipolar transistor
①
Drive the motor by the fixed current control for the output torque stabilization to the applied voltage
change. This reference excitation current is 500mA. Applying any excessive electric current will
cause the abnormal generation and the excessive torque, which will end in mechanical damages;
therefore, do not apply any electric current that exceeds the requirement.
②
Determine the motor driving requirements after confirming effects of load variations caused
by temperature, the humidity, and types of paper. If the motor is driven by any excessive
torque, the gears may be damaged when the paper is locked; therefore, attention should be
paid.