National Instruments NI 9683 User manual

USER GUIDE AND SPECIFICATIONS

NI 9683

General Purpose Inverter Controller RIO Mezzanine Card

This document provides pinouts, connectivity information, and specifications for the National

Instruments 9683 General Purpose Inverter Control (GPIC) RIO Mezzanine Card (RMC).

Caution National Instruments makes no product safety, electromagnetic

compatibility (EMC), or CE marking compliance claims for the NI 9683. The

end-product supplier is responsible for conformity to any and all compliance

requirements.

Caution The NI 9683 must be installed inside a suitable enclosure prior to use.

Hazardous voltages may be present.

Caution Exercise caution when placing the NI 9683 inside an enclosure. Auxiliary

cooling may be necessary to keep the device under the maximum ambient

temperature rating for the NI 9683. Refer to the Specifications section for more

information about the maximum ambient temperature rating.

Caution The NI 9683 is designed for low voltage signals. You must ensure that all

signals connected to the NI 9683 are isolated and no unsafe voltages are present at

the NI 9683 inputs. Voltages that exceed the specifications could result in damage to

the NI 9683.

Caution Use the NI 9683 with only NI sbRIO-9605/9606 devices. The NI 9683 is

not electrically or mechanically compatible with other NI sbRIO devices.

Caution Do not operate the NI 9683 in a manner not specified in this user guide.

Product misuse can result in a hazard. You can compromise the safety protection built

into the product if the product is damaged in any way. If the product is damaged,

return it to National Instruments for repair.

2|ni.com |NI 9683 User Guide and Specifications

Figure 1. NI 9683 Parts Locator Diagram

Dimensions

Figures 2 through 4 show dimensional drawings of the NI 9683.

Figure 2. NI 9683 Primary Side Dimensions in Millimeters (Inches)

1 Primary Side

2 Secondary Side

3 LVTTL DIO

4 Sourcing DI

5 Sinking DO and Relay Control DO

6 Half-bridge DO

7 Simultaneous AI

8 Scanned AI and AO

9 sbRIO Mezzanine Connector

114.3(4.500)

109.22 (4.300)

93.32 (3.674)

91.67 (3.609)

23.57 (0.928)

21.59 (0.850)

11.81 (0.465)

0.00 (0.000)

–5.08(–0.200)

–1.88 (–0.074)

0.00 (0.000)

32.26 (1.270)

49.05 (1.931)

71.76 (2.825)

108.59 (4.275)

145.39 (5.724)

162.05 (6.380)

169.67 (6.680)

174.75 (6.880)

111.1 (4.374)

NI 9683 User Guide and Specifications |© National Instruments |3

Figure 3. NI 9683 Secondary Side Dimensions in Millimeters (Inches)

Figure 4. NI 9683 Maximum Height of Components in Millimeters (Inches)

Note For more information about the dimensions of the NI 9683, including

two-dimensional drawings and three-dimensional models, go to ni.com/

dimensions.

105.46 (4.152)

84.12 (3.312)

73.66 (2.900)

12.70 (0.500)

165.91 (6.532)

53.34 (2.100)

10.92 (0.430)

147.32 (5.800)

3.76 (0.148)

0.00 (0.000)

–5.08(–0.200)

3.76 (0.148)

0 (0.000)

–5.08(–0.200)

11x Ø 3.30 (0.130)

9.98(0.393)

4|ni.com |NI 9683 User Guide and Specifications

Typical NI 9683 System

Figure 5 shows a typical NI 9683 system.

Figure 5. Typical NI 9683 System

1 Enclosure. The NI 9683 must be installed inside a suitable enclosure.

2 NI sbRIO-9605/9606. Use the NI 9683 with only NI sbRIO-9605/9606 sbRIO devices.

3 NI 9683.

4 Interface board. The NI 9683 specifications assume direct board-to-board connections. Refer the Selecting

a Wire Gauge for Relay Control Digital Outputs section for information about designing ribbon cables to

meet the relay control DO specifications on the NI 9683.

5 Local ambient temperature location. The local ambient temperature is the operating temperature of the

NI 9683 inside the enclosure. Refer to the Environmental section for more information about the operating

temperature.

6 Ambient temperature location. The ambient temperature is the operating temperature outside of the

enclosure. Refer to the Environmental section for more information about the operating temperature.

NI 9683 User Guide and Specifications |© National Instruments |5

Mating the NI 9683 to the NI sbRIO-9605/9606

Figure 6 shows how to mate the NI 9683 to the NI sbRIO-9605/9606. Ensure that the

NI sbRIO-9605/9606 is powered off before connecting the NI 9683.

Caution You must use the standoffs specified below when mating the NI 9683 to

the NI sbRIO-9605/9606 to properly seat the sbRIO mezzanine connectors and

prevent damaging the device.

Figure 6. Mating the NI 9683 to the NI sbRIO-9605/9606

Note The screws include a nylon patch to prevent them from loosening when

subject to vibration. NI recommends using a 3/16 in. socket and Phillips screwdriver

when mating the NI 9683 to the NI sbRIO-9605/9606 to ensure the screw installs in

the standoff correctly.

1 4-40 × 0.250 in. Screw (×8)

2 NI sbRIO-9605/9606

3 4-40 × 0.380 in. Standoff (×4)

4 NI 9683

6|ni.com |NI 9683 User Guide and Specifications

Connecting the NI 9683

The NI 9683 provides connections for 16 simultaneous analog input channels, 8 scanned analog

input channels, 8 analog output channels, 28 sourcing digital input channels, 14 half-bridge

digital output channels, 24 sinking digital output channels, 4 relay control digital output

channels, and 32 LVTTL digital input/output channels.

Table 7 lists and describes the connectors on the NI 9683 and the part number and manufacturer

of each connector. Refer to the manufacturer for information about using and matching these

connectors.

Figure 7. NI 9683 Connector Descriptions

Connector Description Recommended Mating Connector

Simultaneous AI 40-position header On-Shore Technology, Inc. (SH2-40G-PT)

Scanned AI, AO 20-position header On-Shore Technology, Inc. (SH2-20G-PT)

Sourcing DI 34-position header On-Shore Technology, Inc. (SH2-34G-PT)

Sinking DO, Relay Control DO 40-position header On-Shore Technology, Inc. (SH2-40G-PT)

Half-Bridge DO 26-position header On-Shore Technology, Inc. (SH2-26G-PT)

LVTTL DIO 60-position header On-Shore Technology, Inc. (SH2-60G-PT)

NI 9683 User Guide and Specifications |© National Instruments |7

Figure 8 shows the NI 9683 pin assignments.

Figure 8. NI 9683 Pin Assignments

GND

DIO 29

DIO 28

GND

DIO 25

DIO 24

GND

DIO 21

DIO 20

GND

DIO 17

DIO 16

GND

+3.3V

DIO 31

DIO 30

GND

DIO 27

DIO 26

GND

DIO 23

DIO 22

GND

DIO 19

DIO 18

GND

DIO 15

DIO 14

DIO 13

DIO 12

DIO 11

DIO 10

DIO 9

DIO 8

DIO 7

DIO 6

DIO 5

DIO 4

DIO 3

DIO 2

DIO 1

DIO 0

VI P1

DI P1.13

DI P1.11

DI P1.9

DI P1.7

DI P1.5

DI P1.3

DI P1.1

DI P0.13

DI P0.11

DI P0.9

DI P0.7

DI P0.5

DI P0.3

DI P0.1

VI P0

GND

DI P1.12

DI P1.10

DI P1.8

DI P1.6

DI P1.4

DI P1.2

DI P1.0

DI P0.12

DI P0.10

DI P0.8

DI P0.6

DI P0.4

DI P0.2

DI P0.0

GND

DO0

DO1

DO2

DO3

DO4

DO5

DO6

GND

Vext

GND

DO7

DO8

DO9

DO10

DO11

DO12

DO13

AI0

AI2

GND

AI4

AI6

AO0

AO2

GND

AO4

AO6

AI1

AI3

GND

AI5

AI7

AO1

AO3

GND

AO5

AO7

DO22

DO20

DO18

DO16

GND

DO14

DO12

DO10

DO8

GND

DO6

DO4

DO2

DO0

DO3+

DO2+

DO1+

DO0+

DO23

DO21

DO19

DO17

GND

DO15

DO13

DO11

DO9

GND

DO7

DO5

DO3

DO1

DO3–

DO2–

DO1–

DO0–

3536

3738

3940

CSCOM

AI0+

AI1+

AI2+

AI3+

AI4+

AI5+

AI6+

AI7+

AI8+

AI9+

AI10+

AI11+

AI12+

AI13+

AI14+

AI15+

Simultaneous AI

Scanned AI & AO

LVTTL

Sinking DO

Relay

Control

CSCOM

AI0–

AI1–

AI2–

AI3–

AI4–

AI5–

AI6–

AI7–

AI8–

AI9–

AI10–

AI11–

AI12–

AI13–

AI14–

AI15–

Half-Bridge

Sourcing DI

8|ni.com |NI 9683 User Guide and Specifications

Simultaneous Analog Input

The NI 9683 provides connections for 16 pseudo-differential analog input channels.

Each channel has an AI+ and AI- pin to which you can connect a voltage signal. AI- is internally

connected to the isolated ground reference through a high value resistor.

Connecting Differential and Single-Ended Voltage Signals to the

NI 9683

You can connect grounded or floating signal sources to the NI 9683. Connect the positive

voltage signal to AI+ and the negative voltage signal to the AI-.

Figure 9. Connecting a Differential Voltage Signal to a Simultaneous AI Channel

Figure 10. Connecting a Single-Ended Voltage Signal to a Simultaneous AI Channel

NI 9683 Circuitry

The NI 9683 analog channels share a common ground that is isolated from other parts of the

board. The NI 9683 protects each channel from overvoltages. Refer to the Specifications section

for more information about overvoltage protection. The incoming analog signal on each channel

is buffered and conditioned by the differential amplifier and then sampled by a 12-bit ADC.

Each channel has an independent track-and-hold amplifier and ADC that allow you to sample

and convert all 16 channel simultaneously.

Connecting Current Sensors to the NI 9683

You can connect current sensors to the NI 9683 using a termination resistor to convert the current

measurement to a single-ended voltage measurement.

Connect the current sensor output to AI+ and the external power supply COM to the current

sensor common pin (CS COM) on the NI 9683.

NI 9683

Simultaneous AI+

Simultaneous AI–

Isolated

ADC

Voltage Source

–

NI 9683

Simultaneous AI+

Simultaneous AI–

Isolated

ADC

Voltage Source

–

NI 9683 User Guide and Specifications |© National Instruments |9

Figure 11. Connecting a Current Sensor to the NI 9683

To avoid the affect of common mode impedance on the measurement, connect one end of all the

termination resistors to a single, small plane. Then have a single connection from the plane to

the CS COM pin of the NI 9683.

The NI 9683 simultaneous analog inputs have ±10 V and ±5 V input ranges that can

accommodate termination resistor values in a certain range, based on the sensor peak current.

Select the highest possible termination resistor to maximize the dynamic range of the analog

input. Refer to the Specifications section for more information about the analog input range. Use

the following equation to determine the maximum value for the terminal resistor based on the

sensor peak current.

For a current sensor with a peak output current of 70 mA, the maximum termination resistor that

can be used with the NI 9683 is as follows:

Note Using the ±5 V input range can reduce the power dissipation on the

termination resistor by 50% when compared to the power dissipation of the ±10 V

input range.

Scanned Analog Input (Monitoring)

The NI 9683 provides connections for 8 single-ended scanned analog input channels.

Each channel has an AI pin to which you can connect a voltage signal. Scanned analog input and

scanned analog output channels share four GND pins on the dedicated 20-position connector.

NI 9683

Interface Board

Termination

Resistor

AI0+OUT

PS–

PS+

PS–

PS+

AI1+

CSCOMCOM

Isolated

ADC

Current

Sensor

External

Power

Supply

Rmax

I_peakmax

--------------------------=

Rmax

0.07A

-------------- 71Ω==

10 |ni.com |NI 9683 User Guide and Specifications

Figure 12. Connecting Single-Ended Voltage Signals to the Scanned Analog Inputs

Scanned Analog Inputs Accuracy and Bandwidth

Use signal sources with an output impedance of less than 2 kΩto ensure specified performance.

Large source impedances add to the input resistor inside the NI 9683, which results in increased

settling time and decreases the accuracy of the measurement. Increased input impedance also

results in a decrease of the -3 dB bandwidth.

Half-Bridge Digital Output

The NI 9683 provides connections for 14 half-bridge digital output channels.

Each channel has an half-bridge DO pin to which you can connect a digital input device. An

external power supply referenced to ground of the board must be connected to Vext.

Figure 13. Connecting a Digital Device to a Half-Bridge DO Channel

The NI 9683 has push-pull half-bridge digital outputs, meaning the NI 9683 can sink or source

current. When the channel is ON, the half-bridge DO pin is driven to the external power supply

minus a voltage drop due to the sourced current. When the channel is turned OFF, the half-bridge

DO pin is driven to ground plus a voltage drop due to the sinked current.

Note Make sure the devices you connect to the NI 9683 are compatible with the

half-bridge digital output specifications. Use connections that match the output

impedance of the NI 9683 half-bridge outputs. Refer to the Specifications section for

information about output voltages.

NI 9683

ADCMUX

Scanned AI0

Scanned AI7

GND

Voltage Source

–

NI 9683

Half-Bridge DO

100 Ω

GND

Vext Device

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