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PDF SMJ40 Data sheet ( Hoja de datos )
| Número de pieza | SMJ40 | |
| Descripción | Stepping Motor | |
| Fabricantes | FDK | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de SMJ40 (archivo pdf) en la parte inferior de esta página. Total 14 Páginas | ||
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SM-SME001-0504
Stepping Motor
www.DataSheet4U.com
Applications
Mobile equipment
Digital cameras, Mobile equipments, PDA, etc.
Office automation equipment
Printers, facsimiles, Typewriters, Photocopiers, FDD head drives, CD-ROM pickup drives, Scanners, etc.
Audio-visual equipment
Video cameras, Digital cameras, etc.
Measuring instruments
Automotive odometers, Various integrating meters and counters
Game equipment
Pachinko machines, etc.
Structure and operation
Stepper motors convert electric pulses into
incremental mechanical motions. FDK's stepper
motors have a claw-pole yoke structure with a
cylindrical permanent magnet rotor, as illustrated
below. These motors rotate when a rotating
magnetic field is generated and when the rotor
magnet is synchronized with the rotating magnetic
field.
Specifically, a rotating field is generated by
applying alternating current to the solenoid coils of
two stators, which are sandwiched between yokes.
These yokes have the same number of teeth as
the poles of the rotor magnet. The stators are
positioned so that their electric phase angles are
90 degrees apart.
Code names
http://www.fdk.com
1 page  
SM-SME001-0504
www.DataSheet4U.com
Standard flanges
1. Flange shapes
The standard flange shapes of FDK stepper motors
are divided into round aperture types and screw
types. These standard shapes are intended to
shorten the delivery period and reduce the initial
costs. Special-shape flanges are available on a
customized-design basis.
Unit:mm
http://www.fdk.com
5 Page 
SM-SME008-0301
2. Excitation modes
Mode
Explanation
• Only one phase excited at a time.
• Low power consumption.
Single-phase
excitation
Two-phase
excitation
• Two phases excited at a time.
• Large torque output, although consuming 2 times more power than single
phase.
• Small damping oscillation, and wide-range responses.
• Most popularly used excitation mode.
Half-step
excitation
• Alternating single- and two-phase excitation modes.
• Consumes 1.5 times more power than single phase.
• Step angle equal to half of single- and two-phase step angles, thus called “half-
step drive”.
• Two times wider response frequency range.
• Also called “microstep” drive, this excitation features finer step angles through
the control of current.
• Its step angle is half of the half- step excitation, and quarter of the two-phase
excitation.
• This excitation mode is used to obtain finer step motions or smoother rotations.
W half-step
excitation
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Excitation sequence (H: on, L: off)
A
B
A
B
A
B
A
B
A
B
A
B
A
B
IWhen using stepper motors
1. The characteristics of stepper motors are affected by their drive circuits. Please disign the circuit carefully.
2. Temperature is also an influential factor. Be sure to operate the stepper motors within the permissible temperature range.
3. When test-driving stepper motors, check their service life, vibration, noise, etc.
http://www.fdk.co.jp
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet SMJ40.PDF ] | |
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