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DK1241A Datasheet

  • DK1241A

  • Advanced Microstepping Motion Control Chipset

  • 421.52KB

  • 60頁(yè)

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Advanced Microstepping
Motion Control Chipset
Features
Internal generation of microstepping signals
2-phase as well as 3-phase stepper motors
64 microsteps per full step
S-curve, trapezoidal, and velocity profile
trajectory modes
Incremental encoder feedback
On-the-fly motor stall detection
Software & feature compatible with other
versions of PMD's chipset family
Available in 1 or 2 axis configurations
32-bit position, velocity, acceleration and jerk
trajectory profile registers
Electronic Gearing
Two travel-limit switches per axis
Choice of PWM or DAC motor output signals
Chipset Developer's Kit Available
MC1241A
MC1141A
General Description
The MC1241A is a dedicated motion processor which functions as a
complete chip-based stepper motor controller. Packaged in a 2-IC
chipset, this device performs trajectory profile generation and
microstepping signal generation. The chipset outputs PWM or
DAC-compatible motor command signals which directly drive the
windings of the stepping motor, eliminating the need for external
microstepping circuitry. The MC1241A also provides the ability to
input incremental encoder signals. It is available in a one, or a two-axis
configuration.
The MC1241A is functionally similar to other members of PMD's 1st
Generation Motion Processor Family however it adds the ability to
perform micrstepping signal generation. All of these devices provide
sophisticated trajectory generation allowing the creation of complex
motion sequences.
Both two and three-phase stepping motors are supported by the
MC1241A. An internal ROM-based lookup table is used to generate
the microstepping waveforms. The motor power level can be controlled
with a resolution of 16 bits. Changes to the motor power level can be
coordinated with other profile changes to optimize motor heat
dissipation under different load and acceleration conditions.
The chipset is controlled by a host processor which interfaces with the
chipset via an 8-bit, bi-directional port. Communications to/from the
chipset consist of packet-oriented messages.
The chipset is packaged in 2 68-pin PLCC packages. Both chips utilize
CMOS technology and are powered by 5 volts.
Microstepping Waveforms
2-Phase Stepper
Phase A
Phase B
90 Deg
Microsteps
64
128
192
256
320
3-Phase Stepper
Phase A
Phase B
Phase C
120 Deg
Doc. Rev. 11.03, Nov 1997
Performance Motion Devices, Inc. 12 Waltham St. Lexington, MA 02421 tel: 781.674.9860 fax: 781.674.9861
www.pmdcorp.com

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