OM9391SP データシートの表示（PDF） - Omnirel Corp => IRF

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OM9391SP

DSP-BASED MOTOR CONTROLLER

Omnirel Corp => IRF 

PRELIMINARY

OM9391SP

DSP-BASED MOTOR CONTROLLER

FEATURES / BENEFITS

• Embedded Motor Control DSP improves system integration and flexibility

• 15A average phase current with 325V maximum bus voltage

• Hall Effect sensor based or sensorless control for improved reliability

• Logic supplies (+15V/+5V) generated onboard, eliminating external parts

• Serial port for isolated RS-232 interface allows system level control

• Direction and Velocity control

• Rugged plastic module for high reliability applications

• Low impedance bus terminal construction

APPLICATIONS

• Fans

• Pumps

• Compressors

• Fin Actuators

• Braking Systems

DESCRIPTION

The OM9391SP is a DSP-based motor controller for three-phase AC Motors, such as the Permanent Magnet

Synchronous Motor (PMSM) or the AC Induction Motor (ACIM). The controller is designed to improve

system integration, efficiency, flexibility, and reliability while reducing the overall system cost. The

OM9391SP can be configured for trapezoidal commutation via Hall effect sensor feedback. In this

configuration, the Hall effect sensor outputs provide discrete absolute rotor position for commutation. The

Hall effect sensor outputs are fed into the control port, level shifted onboard from 15V to 5V, then fed

directly into the DSP. Based on this information, velocity is determined. Alternatively, the OM9391SP can

be configured for sinusoidal or trapezoidal commutation via sensorless control. Consult the factory for

details.

The OM9391SP requires a single ended 28V supply for logic and up to 270V for motor bus. The logic

voltage supplies (15V and 5V) are derived onboard from the 28V supply. The OM9391SP will

accommodate either an analog or digital command input. For the latter, a serial port is provided onboard to

interface with an isolated RS-232 communications port. The OM9391SP provides direction control as well

as current limit for over-current protection.

The OM9391SP is a complete motor control solution housed in a rugged plastic module designed for high

reliability applications. The assembly process includes chip-on-IMS (Insulated Metal Substrate) technology

for the driver and power stages to maximize the power density and surface mount technology for the control

stage. This combination of chip-on-IMS and surface mount technologies and rugged plastic package

provides a low cost, high performance motor control solution for high reliability applications including fans,

pumps, compressors, fin actuators and braking systems.

Rev 01 5/29/00

1

205 Crawford Street • Leominster MA 01453 • Phone: 978 534 5776 • Fax: 978 537 4246 • www.omnirel.com

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