High-Performance Stepper/Servo Motion Controllers
NI 735x
• Up to 8 axes of motion
Operating Systems
• Windows Vista/XP/2000
• LabVIEW Real-Time
• 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
Recommended NI Software
• LabVIEW
• NI Motion Assistant
• LabWindows™/CVI
• Measurement Studio
Other Compatible Software
• Visual Basic
• C/C++
• Patented step generation technology
for smooth stepper motion
Driver Software (included)
• NI-Motion
Overview and Applications
Synchronizing Multiple Axes for
NI 735x PCI and PXI stepper and servo motion controllers are for machine Parallel Mechanism Applications
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
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
advanced features, including sinusoidal commutation for brushless motors. at once and have each axis follow the acceleration and velocity profiles
NI 735x motion controllers are available in 2-, 4-, 6-, and 8-axis versions
for PXI and PCI.
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
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
Real-Time and function as a stand-alone Ethernet-based motion controller. this difference in friction for easier tuning and precise control. Piezoelectric
With this technology, you can create distributed motion control systems
that integrate tightly with data acquisition or vision.
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.