OM9391SP International Rectifier Corp., OM9391SP Datasheet - Page 5
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OM9391SP
Manufacturer Part Number
OM9391SP
Description
Dsp-based Motor Controller
Manufacturer
International Rectifier Corp.
Datasheet
1.OM9391SP.pdf
(6 pages)
PRELIMINARY
OM9391SP
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 OM9391SP.
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 OM9391SP. 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 OM9391SP. 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.
Rev 01 5/29/00
5
205 Crawford Street Leominster MA 01453 Phone: 978 534 5776 Fax: 978 537 4246 www.omnirel.com