Inverter Driving Signals
Fast, high voltage digital signals are used to turn the high side and low side IGBT modules on
and off. The connections between the inverter signals and the GPIC are described in Inverter
Signals on page 9. The digital signals for SKiiP 3 GD and SKiiP 3 GB connectors are 15 V
logic. For the other connectors, the signals are 24 V logic. All digital driving signals are
available at breakout connector J13 with 24 V logic levels.
The following table shows the pin assignments for the J13 breakout connector.
Table 11. J13 Pin Assignments (HB Signals Breakout Connector)
Pin GPIC Signal Inverter Signal Pin GPIC Signal Inverter Signal
1 GND — 13 GND —
2 DO0 HB0_BOT 14 DO1 HB0_TOP
3 DO2 HB1_BOT 15 DO3 HB1_TOP
4 GND — 16 GND —
5 DO4 HB2_BOT 17 DO5 HB2_TOP
6 DO6 HB3_BOT 18 DO7 HB3_TOP
7 GND — 19 GND —
8 DO8 HB4_BOT 20 DO9 HB4_TOP
9 DO10 HB5_BOT 21 DO11 HB5_TOP
10 GND — 22 GND —
11 DO12 HB6_BOT 23 DO13 HB6_TOP
12 GND — 24 GND —
Analog Input
The sbRIO-9687 interface board can accept inputs from analog input connectors or from
inverters. The analog input signals can be configured on the sbRIO-9687 in a variety of ways;
as a result, it is possible to use the sbRIO-9687 to control most of the power conversion
circuits without any additional wiring or circuitry.
The following figure shows a block diagram of the sbRIO-9687 analog input subsystem.
14 | ni.com | sbRIO-9687 User Manual
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