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A: Resolver Offset potentiometer | The Controller Board provides a Resolver circuit. The Resolver circuit can be calibrated via two potentiometers and the signals can be probed via test points. RV3: used to adjust the Resolver SIN and COS signal offsets. The offset voltage can be measured by probing R-TP1. In general, offset should be adjusted to in-between signal to avoid clipping at the output. R-TP1: used to adjust 0.5-3.3V (adjustment in RV3 provides 1.5V on R-TP1). R-TP2: used to probe SIN offset value. Amplitude measured at R-TP2 should be between 0.1V and 2.3V for correct operation. R-TP3: used to probe COS offset value. Amplitude measured at R-TP3 should be between 0.1V and 2.3V for correct operation. | |||||||||||||||||||||||||||||||||
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A: Resolver Excitation calibration potentiometer | RV4: used to adjust the resolver excitation signal’s voltage amplitude. R-TP4 is used to probe the excitation signal output of the Resolver Circuit. Signal will saturate around ±5.5V | |||||||||||||||||||||||||||||||||
B: CAN jumper settings | Users can add a 120 Ohm resistor simply by placing the CAN jumper in the ON position, as shown. | |||||||||||||||||||||||||||||||||
C: Potentiometer settings | User potentiometers provide 0V to 3.3V output:
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D: DSP switches | The user switches SW1 to SW4. These switches are Normally Open and pulled-up to 3.3V. Press and hold to obtain 0 V (release to return to 3.3 V).
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E: DSP output display LEDs | Only ON when the voltage is at 0.
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F: BOOT selector jumpers | Selector Jumpers: these jumpers are reserved for OPAL-RT technicians or engineers who are experienced with Texas Instruments controllers.
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G: JTAG connector | Allows the user to debug/flash the TI controller.
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H: Input/output jumpers | Jumpers allow users to insert a short or leave the circuit open, as needed. Each jumper controls a specific channel, identified at each jumper on the board (see image opposite). | |||||||||||||||||||||||||||||||||
I: Power LEDs | Green when 3.3V power is functioning |
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