20
462
S e c t i o n 1 . 6
M o t o r R e q u i r e m e n t s
S e c t i o n O v e r v i e w
This section covers the motor configurations for the IB462H.
Selecting a motor.
Motor wiring.
Connecting the motor.
S e l e c t i n g a M o t o r
When selecting a stepper motor for your application there are several factors
that need to be taken into consideration.
How will the motor be coupled to the load?
How much torque is required to move the load?
How fast does the load need to move or accelerate?
What degree of accuracy is required when positioning the load?
While determining the answers to these and other questions is beyond the
scope of this document, they are details that you must know in order to select
a motor that is appropriate for your application. These details will effect
everything from the power supply voltage to the type and wiring configuration
of your stepper motor, as well as the current and Half/Full step settings of your
IB462H drive.
T y p e s a n d C o n s t r u c t i o n o f S t e p p i n g M o t o r s
The stepping motor, while classed as a DC motor, is actually an AC motor that
is operated by trains of pulses. Though it is called a “stepping motor” it is in
reality a Polyphase Synchronous Motor. This means it has multiple phases
wound in the stator and the rotor is dragged along in synchronism with the
rotating magnetic field. The IB462H is designed to work with the following
types of stepping motors:
1) Permanent Magnet (PM)
2) Hybrid Stepping Motors
Hybrid Stepping motors combine the features of the PM Stepping Motors with
the features of another type of stepping motor called a Variable Reluctance
Motor (VR), which is a low torque and load capacity motor that is typically
used in instrumentation. The IB462 cannot be used with VR motors as they
have no permanent magnet.
On Hybrid motors the phases are wound on toothed segments of the stator
assembly. The rotor consists of a permanent magnet with a toothed outer
surface which allows precision motion accurate to within ± 3 percent.
