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National Instruments SCC-AO10 User Manual

Isolated analog output module
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USER GUIDE
SCC-AO10 Isolated Analog
Output Module
Conventions
»
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The SCC-AO10 is an isolated voltage output module with an output range
of ±10 V. The output voltage level is controlled by the DAC output of an
E Series DAQ device. You can increase the output voltage level to ±20 V
by connecting two SCC-AO10 modules in series.
The following conventions are used in this guide:
The » symbol leads you through nested menu items and dialog box options
to a final action. The sequence File»Page Setup»Options directs you to
pull down the File menu, select the Page Setup item, and select Options
from the last dialog box.
This icon denotes a note, which alerts you to important information.
This icon denotes a caution, which advises you of precautions to take to
avoid injury, data loss, or a system crash. When this symbol is marked on
the product, refer to the Read Me First: Safety and Radio-Frequency
Interference document, shipped with the product, for precautions to take.
When symbol is marked on a product it denotes a warning advising you to
take precautions to avoid electrical shock.
When symbol is marked on a product it denotes a component that may be
hot. Touching this component may result in bodily injury.
Bold text denotes items that you must select or click in the software, such
as menu items and dialog box options. Bold text also denotes parameter
names.

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Summary of Contents for National Instruments SCC-AO10

  • Page 1 SCC-AO10 Isolated Analog Output Module The SCC-AO10 is an isolated voltage output module with an output range of ±10 V. The output voltage level is controlled by the DAC output of an E Series DAQ device. You can increase the output voltage level to ±20 V by connecting two SCC-AO10 modules in series.
  • Page 2 SC-2345 SC-2345 refers to both the SC-2345 connector block and the SC-2345 with configurable connectors. SCC refers to any SCC Series signal conditioning module. SCC-AO10 Isolated Analog Output Module User Guide ni.com...

  • Page 3: What You Need To Get Started

    What You Need to Get Started To set up and use the SCC-AO10, you need the following items: ❑ SC-2345/2350 with one of the following: – SCC-PWR01 – SCC-PWR02 and PS01 power supply – SCC-PWR03 (requires a 7 to 42 VDC power supply, not included) ❑...

  • Page 4: Device Specific Information

    Pins 2 and 3 both connect to the isolated voltage output for flexibility in field wiring. Caution Connecting an external voltage source to the output terminals of the SCC-AO10 may damage the module. Figures 1 and 2 show the SCC-AO10 connected to a nonreferenced load and to a load with a high common-mode voltage.
  • Page 5 AO ( X ) Load AO GND Figure 2. SCC-AO10 Connected to a Load with a High Common-Mode Voltage Connecting Two SCC-AO10 Modules in Series You can increase the maximum total output voltage to ±20 V by connecting two SCC-AO10 modules in series. Plug the two modules into sockets J17 and J18 of the SC-2345, and wire the modules to a load as shown in Figure 3.
  • Page 6 Figure 3. Connecting Two SCC-AO10 Modules in Series The SC-2345 routes the E Series DAQ device analog output channels AO 0 and AO 1 to the SCC-AO10 modules, and the resulting maximum output voltage range is ±20 V. Refer to Figure 3 and use the following...
  • Page 7 Calibrating Gain and Offset Errors The SCC-AO10 is calibrated at the factory before shipment. To adjust the gain and offset of the SCC-AO10 in your system using an E Series DAQ device, you need a voltage meter and a 1/8 in. flathead screwdriver. Before adjusting the SCC-AO10, allow 30 minutes for the DAQ device to warm up to its nominal operating temperature.

  • Page 8: Specifications

    Adjust the gain potentiometer on the top of the SCC-AO10 until the voltmeter reads 9.9 VDC. The gain is now calibrated. Specifications These ratings are typical at 25 °C unless otherwise stated. Electrical Number of output channels.....One nonreferenced (floating) Input range ..........±10 V Output range ...........±10 V...
  • Page 9 Pollution Degree (indoor use only) ..2 Stability Recommended warm-up time ....10 min (30 min for connected E Series DAQ device) Output offset drift........300 µV/°C Gain temperature coefficient....300 ppm/°C © National Instruments Corporation SCC-AO10 Isolated Analog Output Module User Guide...

  • Page 10: Electromagnetic Compatibility

    Refer to the Declaration of Conformity (DoC) for this product for any additional regulatory compliance information. To obtain the DoC for this product, visit , search by model number or product line, and click the ni.com/hardref.nsf appropriate link in the Certification column. SCC-AO10 Isolated Analog Output Module User Guide ni.com...

  • Page 11: I/O Connector Pin Assignments

    I/O Connector Pin Assignments Figure 4 shows the I/O connector pins on the bottom of the SCC-AO10. 1 Pin 1 Pin 2 PWB Key Pin 19 5 Pin 20 Figure 4. SCC Module Bottom View Table 1 lists the signal connection corresponding to each pin. A GND is the reference for the ±15 V supplies and REF 5 V.
  • Page 12 *371080B-01* Corporation. Product and company names mentioned herein are trademarks or trade names of their respective companies. For patents covering National Instruments products, refer to the appropriate location: Help»Patents in your software, the patents.txt file on your CD, or ni.com/patents.

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