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
12
7
5
9
3
4
6
8
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)
–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.
6
5
1
34
2

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
2
1
1
3
4

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
GND
GND
DIO 29
DIO 28
GND
DIO 25
DIO 24
GND
DIO 21
DIO 20
GND
DIO 17
DIO 16
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
+3.3V
+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
60
58
56
54
52
50
48
46
44
42
40
38
36
34
32
30
28
26
24
22
20
18
16
14
12
10
8
6
4
2
59
57
55
53
51
49
47
45
43
41
39
37
35
33
31
29
27
25
23
21
19
17
15
13
11
9
7
5
3
1
NC
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
NC
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
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
2
4
6
9
10
12
14
16
18
20
22
24
26
28
30
32
34
DO0
DO1
DO2
DO3
DO4
DO5
DO6
GND
GND
GND
GND
GND
Vext
GND
GND
GND
GND
GND
GND
DO7
DO8
DO9
DO10
DO11
DO12
DO13
14
12
10
8
6
4
2
20
18
16
19
17
15
26
24
22
25
23
21
13
11
9
7
5
3
1
AI0 AI2 GND AI4 AI6 AO0 AO2 GND AO4 AO6
AI1 AI3 GND AI5 AI7 AO1 AO3 GND AO5 AO7
20
18
16
14
12
10
8
6
4
2
19
17
15
13
11
9
7
5
3
1
DO22 DO20 DO18 DO16 GND DO14 DO12 DO10 DO8 GND DO6 DO4 DO2 DO0 NC NC DO3+ DO2+ DO1+ DO0+
DO23 DO21 DO19 DO17 GND DO15 DO13 DO11 DO9 GND DO7 DO5 DO3 DO1 NC NC DO3– DO2– DO1– DO0–
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
3536
3738
3940
CSCOM CSCOM CSCOM 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
DO
CSCOM CSCOM CSCOM CSCOM AI0– AI1– AI2– AI3– AI4– AI5– AI6– AI7– AI8– AI9– AI10– AI11– AI12– AI13– AI14– AI15–
40
38
36
34
32
30
28
26
24
22
20
18
16
14
12
10
8
39
37
35
33
31
29
27
25
23
21
19
17
15
13
11
9
7
65 43 21
Half-Bridge
DO
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
5V
I_peakmax
--------------------------=
Rmax
5V
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