preliminary OM9399SP rev 01 5/29/00 205 crawford street ? leominster ma 01453 ? phone: 978 534 5776 ? fax: 978 537 4246 ? www.omnirel.com 1 features / benefits ? embedded motor control dsp improves system integration and flexibility ? 25a 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 OM9399SP 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 OM9399SP 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 OM9399SP can be configured for sinusoidal or trapezoidal commutation via sensorless control. consult the factory for details. the OM9399SP 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 OM9399SP 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 OM9399SP provides direction control as well as current limit for over-current protection. the OM9399SP is a complete motor control solution housed in a r ugged plastic module designed for high reliability applications. the assembly process includes chip-on-dbc (directly bonded copper) technology for the power stage to maximize the power density, and thick film and surface mount technologies for the driver and control stages. this combination of chip-on-dbc, and the thick film 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. dsp-based motor controller
preliminary OM9399SP rev 01 5/29/00 205 crawford street ? leominster ma 01453 ? phone: 978 534 5776 ? fax: 978 537 4246 ? www.omnirel.com 2 simplified block diagram dsp control & interface phase voltage/cur rent sense bus voltage sense va vb vc 6 3 m hv ic driver + - 270v hall inputs hall effec t sens or outputs ia ib ic +28v
preliminary OM9399SP rev 01 5/29/00 205 crawford street ? leominster ma 01453 ? phone: 978 534 5776 ? fax: 978 537 4246 ? www.omnirel.com 3 absolute maximum ratings motor supply voltage, v m max ????????????...????..?.?.325vdc average phase output current, i o @ t a = +25 o c ?????????.???..30adc logic input voltage (note 1) ????????????.???????.?...5.25v operating temperature range??..????????????.?...-40 o c to +85 o c power switch junction-to-case thermal resistance, rq jc ?????.??...0.48 o c/w recommended operating conditions (t a = 25 o c) motor power supply voltage, v m ?????????????????.+270 vdc average phase output current, i o ????????????????....??25 a note 1: logic inputs: direction, speed in, reset
preliminary OM9399SP rev 01 5/29/00 205 crawford street ? leominster ma 01453 ? phone: 978 534 5776 ? fax: 978 537 4246 ? www.omnirel.com 4 electrical characteristics (ta = 25 o c) parameter symbol conditions min typ. max. units power output section igbt leakage current i ces v ce = 600 vdc 300 a v ge = 0v igbt c-e saturation voltage vce(sat) ic = 50adc 3.2 v vge = 15v diode leakage current i r v r = 600vdc 100 a diode forward voltage v f i f = 37a 1.7 v diode reverse recovery time trr i o =1a, di/dt = -100a/ sec 50 nsec vr = 30v logic input section low level input voltage v il 0.8 v high level input voltage v ih 2.0 v command input section speed in voltage range v cm 05v pinout pin # name direction speed in logic_gnd reset drib dt1 logic_gnd pwmtrip logic_gnd tfsi +28v hall_1 hall_2 hall_3 +15v logic_gnd aux pwm rfsi logic_gnd reset_rs232 voltage bus bus return phase a phase b phase c
preliminary OM9399SP rev 01 5/29/00 205 crawford street ? leominster ma 01453 ? phone: 978 534 5776 ? fax: 978 537 4246 ? www.omnirel.com 5 pin descriptions / functionality pwmtrip - a logic low at this input places all six pwm outputs in the off state. otherwise, this pin is pulled up to +5v onboard. +28v ? this supply is required to generate logic supplies (+15v / +5v) onboard. direction - this logic input is used to select the motor direction. speed in - this input is the analog command input to the OM9399SP. reset - a logic low at this input initiates a complete hardware reset of the dsp. aux_pwm - this output is an auxiliary pwm output. logic_gnd - this pin provides the reference point for the command section. tfs1 - this pin is left open during normal operation. it is dedicated for engineering purposes only. rfs1 - this pin is left open during normal operation. it is dedicated for engineering purposes only. logic_gnd - this pin provides the reference point for the +15v supply. reset_rs-232 - a logic low at this input initiates a complete hardware reset of the dsp. this reset is provided through the rs- 232 interface. dr1b - this pin is dedicated as the data receive pin for the rs-232 interface. note that an isolated rs-232 interface is offered with the OM9399SP. consult the factory for more information. logic_gnd - this pin provides the reference point for the rs-232 interface. dt1 - this pin is dedicated as the data transmit pin for the rs-232 interface. note that an isolated rs-232 interface is offered with the OM9399SP. consult the factory for more information. +15v - this supply is provided for the hall effect sensor bias. hall_1 - this pin is dedicated to the phase a hall effect sensor output. hall_2 - this pin is dedicated to the phase b hall effect sensor output. hall_3 - this pin is dedicated to the phase c hall effect sensor output. logic_gnd - these pins provide the reference point for the +28v supply. voltage bus - this terminal is connected to the positive terminal of the 270v supply. bus return - this terminal is connected to the negative terminal of the 270v supply. phase a - this terminal is connected to the phase a motor lead. phase b - this terminal is connected to the phase b motor lead. phase c - this terminal is connected to the phase c motor lead.
preliminary OM9399SP rev 01 5/29/00 205 crawford street ? leominster ma 01453 ? phone: 978 534 5776 ? fax: 978 537 4246 ? www.omnirel.com 6 mechanical specifications ? overall dimensions (l) 4.25 in. x (w) .48 in. x (h) tbd ? weight: tbd
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