DSP-BASED MOTOR CONTROLLER Embedded Motor Control improves system

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DSP-BASED MOTOR CONTROLLER Embedded Motor Control improves system

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OM9391SP
DSP-BASED MOTOR CONTROLLER
Embedded Motor Control improves system integration flexibility average phase current with 325V maximum voltage Hall Effect sensor based sensorless control improved reliability Logic supplies (+15V/+5V) generated onboard, eliminating external parts Serial port isolated RS-232 interface allows system level control Direction Velocity control Rugged plastic module high reliability applications impedance terminal construction
APPLICATIONS
Fans Pumps Compressors Actuators Braking Systems
DESCRIPTION
OM9391SP DSP-based motor controller three-phase Motors, such Permanent Magnet Synchronous Motor (PMSM) Induction Motor (ACIM). controller designed improve system integration, efficiency, flexibility, reliability while reducing overall system cost. OM9391SP configured trapezoidal commutation Hall effect sensor feedback. this configuration, Hall effect sensor outputs provide discrete absolute rotor position commutation. Hall effect sensor outputs into control port, level shifted onboard from then directly into DSP. Based this information, velocity determined. Alternatively, OM9391SP configured sinusoidal trapezoidal commutation sensorless control. Consult factory details. OM9391SP requires single ended supply logic 270V motor bus. logic voltage supplies (15V derived onboard from supply. OM9391SP will accommodate either analog digital command input. latter, serial port provided onboard interface with isolated RS-232 communications port. OM9391SP provides direction control well current limit over-current protection. OM9391SP complete motor control solution housed rugged plastic module designed high reliability applications. assembly process includes chip-on-IMS (Insulated Metal Substrate) technology driver power stages maximize power density surface mount technology control stage. This combination chip-on-IMS surface mount technologies rugged plastic package provides cost, high performance motor control solution high reliability applications including fans, pumps, compressors, actuators braking systems.
5/29/00
Crawford Street Leominster 01453 Phone: 5776 Fax: 4246 www.omnirel.com
OM9391SP
SIMPLIFIED BLOCK DIAGRAM
270V
+28V Control Interface
Driver
Hall Effect Sensor Outputs
Hall Inputs Voltage Sense
Phase Voltage/Current Sense
5/29/00
Crawford Street Leominster 01453 Phone: 5776 Fax: 4246 www.omnirel.com
OM9391SP
ABSOLUTE MAXIMUM RATINGS
Motor Supply Voltage, .325Vdc Average Phase Output Current, +25o .15Adc Logic Input Voltage (Note .5.25V Operating Temperature Range.-40o +85o Power Switch Junction-to-Case Thermal Resistance, Rqjc .0.70o
RECOMMENDED OPERATING CONDITIONS Motor Power Supply Voltage, .+270 Average Phase Output Current,
Note Logic Inputs: Direction, Speed Reset
5/29/00
Crawford Street Leominster 01453 Phone: 5776 Fax: 4246 www.omnirel.com
OM9391SP
ELECTRICAL CHARACTERISTICS Parameter Symbol Conditions
Power Output Section IGBT Leakage Current Ices 50Adc
TYP.
MAX.
Units
IGBT Saturation Voltage
Vce(sat)
Diode Leakage Current Diode Forward Voltage Diode Reverse Recovery Time
600Vdc =1A, di/dt -100A/µsec
nsec
Logic Input Section Level Input Voltage High Level Input Voltage Command Input Section Speed Voltage Range
PINOUT
NAME Direction Speed Logic_Gnd Reset DRIB Logic_Gnd PWMTRIP Logic_Gnd TFSI +28V Hall_1 Hall_2 Hall_3 +15V Logic_Gnd RFSI Logic_Gnd Reset_RS232 Voltage Return Phase Phase Phase
5/29/00
Crawford Street Leominster 01453 Phone: 5776 Fax: 4246 www.omnirel.com
OM9391SP
DESCRIPTIONS FUNCTIONALITY PWMTRIP logic this input places outputs state. Otherwise, this pulled onboard. +28V This supply required generate logic supplies (+15V +5V) onboard. Direction This logic input used select motor direction. Speed This input analog command input OM9391SP. Reset logic this input initiates complete hardware reset DSP. AUX_PWM This output auxiliary output. Logic_Gnd This provides reference point command section. TFS1 This left open during normal operation. dedicated engineering purposes only. RFS1 This left open during normal operation. dedicated engineering purposes only. Logic_Gnd This provides reference point +15V supply. Reset_RS-232 logic this input initiates complete hardware reset DSP. This reset provided through RS-232 interface. DR1B This dedicated data receive RS-232 interface. Note that isolated RS-232 interface offered with OM9391SP. Consult factory more information. Logic_Gnd This provides reference point RS-232 interface. This dedicated data transmit RS-232 interface. Note that isolated RS-232 interface offered with OM9391SP. Consult factory more information. +15V This supply provided Hall effect sensor bias. Hall_1 This dedicated phase Hall effect sensor output. Hall_2 This dedicated phase Hall effect sensor output. Hall_3 This dedicated phase Hall effect sensor output. Logic_Gnd These pins provide reference point +28V supply. Voltage This terminal connected positive terminal 270V supply. Return This terminal connected negative terminal 270V supply. Phase This terminal connected phase motor lead. Phase This terminal connected phase motor lead. Phase This terminal connected phase motor lead.
5/29/00
Crawford Street Leominster 01453 Phone: 5776 Fax: 4246 www.omnirel.com
OM9391SP
MECHANICAL SPECIFICATIONS
Overall Dimensions 4.25 Weight:
5/29/00
Crawford Street Leominster 01453 Phone: 5776 Fax: 4246 www.omnirel.com

DSP-BASED MOTOR CONTROLLER Embedded Motor Control improves system

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