High-Performance Stepper/Servo Motion Controllers
NI 735x
Up to 8 axes of motion
Configurable stepper or servo control
Up to 4 MHz stepper output rate
62 µs PID loop update rate for up to 2 axes
3D linear and circular interpolation
3D contouring
Sinusoidal commutation for
brushless motors
• Buffered breakpoints for
high-speed integration
• Patented step generation technology
for smooth stepper motion
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Operating Systems
• Windows Vista/XP/2000
• LabVIEW Real-Time
Recommended NI Software
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LabVIEW
NI Motion Assistant
LabWindows
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/CVI
Measurement Studio
Other Compatible Software
• Visual Basic
• C/C++
Driver Software (included)
• NI-Motion
Overview and Applications
NI 735x PCI and PXI stepper and servo motion controllers are for machine
builders and users who need the highest performance and a high-axis
count in a small space. The NI PXI-7358 is the first 8-axis stepper or servo
motion controller packaged as a 1-slot 3U PXI module. It offers many
advanced features, including sinusoidal commutation for brushless motors.
NI 735x motion controllers are available in 2-, 4-, 6-, and 8-axis versions
for PXI and PCI.
Synchronizing Multiple Axes for
Parallel Mechanism Applications
Because NI 735x controllers can control up to eight axes, they are ideal
for high-axis parallel mechanisms where all axes need to be tightly
synchronized. Using the NI-Motion driver software, you can start all axes
at once and have each axis follow the acceleration and velocity profiles
you have defined. This is useful when working with parallel mechanisms
such as hexapods when the axes must move simultaneously.
Motion Control and LabVIEW Real-Time
Many motion applications require very high reliability and integration
with other types of I/O. NI PXI motion controllers are compatible with
the NI LabVIEW Real-Time Module, with which you can create an
integrated motion and I/O system that runs embedded in a real-time OS.
A PXI motion controller with a PXI RT Series controller can run LabVIEW
Real-Time and function as a stand-alone Ethernet-based motion controller.
With this technology, you can create distributed motion control systems
that integrate tightly with data acquisition or vision.
Static-Friction Compensation
The frictional force present before an object starts moving is called static
friction. Static friction is often higher than dynamic friction (frictional
force present during motion) and if the difference between the two is
large enough, it can make the system difficult to tune. The static-friction
compensation feature of the NI 735x motion controllers compensates for
this difference in friction for easier tuning and precise control. Piezoelectric
systems exhibit high static friction and can benefit from the static friction
compensation feature of the NI 7350 series motion controllers. In addition,
to help you tune your system, NI offers the free Piezo Tuning Wizard.
After tuning your system using the Piezo Tuning Wizard, you can easily
program the system using LabVIEW software and NI Motion Assistant
just as you would program any other system.
I/O Capabilities
NI 735x motion controllers have diverse I/O that is useful in many motion
applications. You can use the 64 bits of digital I/O for a wide variety of
applications such as opening or closing valves or turning on and off
solid-state relays using the SSR adapter. These motion controllers also
have eight channels of 16-bit analog I/O useful for reading potentiometers
or other analog measurements.
NI [ NATIONAL INSTRUMENTS CORPORATION ]
