The SureStep™ family
of products, an open-loop stepping system that provides
simple and
accurate control of position and speed and offers a
solution for applications requiring lower power. The
SureStep stepping system provides a low-cost, reliable,
high quality solution to answer your positioning control
needs.
The
SureStep family includes four standard motors and
a "one-size-fits-all" step motor drive.
With holding torques from 83 oz-inch to 434 oz-inch
in NEMA
size 17, 23 or 34 frames, the motors handle a wide
range of automation applications, including woodworking,
assembly and test machines. The motors operate on
2.8 A per phase (size 17 motor uses 2.0 A). Their
square
frame style produces high torque and allows the motors
to achieve the best torque-to-volume ratio. All four
motors are connectorized for easy hookup.
What is a Stepper System?
 Stepper systems have been used in industrial
automation for many years to accurately
position machine
tools, x-y tables, feeders, etc. Unlike typical
AC variable speed drives (used for velocity
control), a stepping drive and motor is
used primarily
for position control. A typical single axis
stepper system consists of a controller/
indexer, a motor
drive, a motor (with or without gearbox), and
a power supply. A stepper is typically commanded
by two digital inputs: a digital pulse train
and a direction bit. A single pulse on the
pulse input moves the motor one step increment
in the
direction (CW or CCW) set by the direction
bit.
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A 20-foot extension cable with locking connector is
a standard option to interface the SureStep motors
to the 2-phase microstepping drive. The cable can easily
be cut to length if needed. The drive operates any
of the four standard motors and features standard +5
VDC optically isolated logic inputs for interfacing
with DirectLOGIC PLCs and many other 3rd party controllers/indexers.
A 9-position DIP switch is used to set up the drive;
no software or add-on resistors are required for configuration.
The DIP switches are used for built-in self test, step
angle selection, current level selection and optional
idle current reduction.
Step
pulses and direction signals from the DirectLOGIC
PLCs or other indexers
and motion controllers are "translated" by
the microstepping drive into precise movements of the
stepping motor shaft. The drive uses advanced microstepping
technology with selectable step sizes of 400 steps
per revolution (divide by 2), 1,000 steps per revolution
(divide by 5), 2,000 steps per revolution (divide by
10) and 10,000 steps per revolution (divide by 50).
The 2-phase bipolar motors have 200 full steps per
revolution or 1.8 degrees per full step.
A standard 32 VDC, 4-amp linear power supply completes
the SureStep line. The power supply operates at least
two SureStep stepping systems of any size with an auxiliary
+5 VDC regulated supply to facilitate DirectLOGIC PLCs
and stepping motor drive interfaces.
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