uInverter Board Connections

This document describes the connections on the uInverter board. For detailed review of the board, please refer to the schematics in the AMDC-Hardware repo.

Connections with the AMDC

PWM

The PWM connector on the uInverter board uses DB15 connector, similar to the Drive Outputs connector on the AMDC. Three-phase PWM signals A+, B+, C+ generated on the AMDC are carried over to the uInverter on this connector CONN2 - PWM.

Pin #

uInverter

AMDC

1

PWM A+

PWM_1

2

No connect

PWM_2

3

PWM B+

PWM_3

4

No connect

PWM_4

5

PWM C+

PWM_5

6

No connect

PWM_6

7

GND

GND

8

No connect

STS_A

9

No connect

STS_B

10

No connect

STS_C

11

No connect

STS_D

12

No connect

VPS

13

No connect

VDD

14

No connect

GNDPS

15

No connect

GND

Analog

For providing feedback of current and voltage (analog sensing), the uInverter board uses the RJSAE connector similar to the analog connector on the AMDC. Three phase current signals and the DC link voltage signal generated on the uInverter are fed back to the AMDC using connector CONN3 - ANALOG SENSING.

Pin Number

uInv Conn 1

AMDC Analog Conn 1

uInv Conn 2

AMDC Analog Conn 2

1

ISENSE_A

Analog P1

ISENSE_C

Analog P3

2

GND  

Analog N1

GND  

Analog N3

3

VCC+   

+15V

No Connect   

+15V

4

GND  

GND

GND  

GND

5

VCC-   

-15V

No Connect   

-15V

6

GND  

GND

GND  

GND

7

ISENSE_B

Analog P2

VDC_SENSE

Analog P4

8

GND    

Analog N2

GND    

Analog N4

External Connections

DC Voltage Connector

The 12V DC supply uses a barrel jack connector with ground-center as marked on the PCB. Here is the link to the datasheet of the connector.

Here is an example of a usable 12V wall-wart connector. A phoenix connector J7 is also provided for an alternative 12V supply connection.

Jumper connection

The phase connection Phoenix connectors are normal-closed (NC) connections. Hence, jumpers should be used to short ONLY the following connectors - J1, J2, J3, J4, J5 and J6. Here is a link to an example phoenix contact jumper.

For more details, please refer to the schematics.