Drawing upon 30 years of motion control
and positioning system design, Aerotech introduces a series of
intelligent digital drives with the highest level of integrated
functionality available today. This new networked digital drive,
the NDrive, is available in 10A, 20A and 30A, PWM and linear versions.
The NDrive includes integral digital and analog I/O, support for
square-wave and sine-wave encoders, a 100 BASE-T Ethernet interface
for I/O expansion, and a 400 Mbs FireWire® communication
interface.
NDrives provide deterministic behavior,
auto-identification, and easy software setup from the NMotion
software controller. Featuring an 80 MHz DSP, the drives have
fully digital current, velocity, and position loops that provide
higher servo loop bandwidth and improved diagnostics over traditional
analog drives. The high-speed FireWire communication interface
provides a low-cost networking medium that reduces wiring complexity
and greatly simplifies startup and integration.
Support for analog sine-wave encoders
is provided through optional onboard encoder multipliers. A hardware-based
multiplier provides 2048X interpolation while a software-based
multiplier provides up to 65536X interpolation. Both devices have
an effective data rate in excess of 2 gigahertz allowing systems
with resolutions in the nanometer range to operate at speeds on
the order of meters per second.
A high-speed Position Synchronized
Output (PSO) option can closely correlate an output signal to
the vector displacement of up to three axes for applications such
as laser firing or ultrasonic inspection. One to 8 outputs can
be fired as a function of position with output latencies on the
order of 50 nanoseconds.
The NDrive is available with up to
12 opto-isolated outputs and 12 opto-isolated inputs, two 16-bit
A/D converters and two 18-bit D/A converters. An optional 10/100
twisted pair Ethernet port supports the direct connection of low
cost, readily available Ethernet I/O modules providing up to an
additional 256 I/O points per drive.
To learn more about the NDrive, please
contact Ron Rekowski at Aerotech, Inc., 101 Zeta Drive, Pittsburgh,
PA 15238, (Phone) 412-963-7470, (Fax) 412-963-7459, sales@aerotech.com.
An Automation 3200 brochure discussing the NDrive is available
on the Aerotech website at www.aerotech.com.
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