SCC-DI01 Isolated Digital Input
Contents
1. Level Min Max Input low voltage DC or Peak AC 1 V Input high voltage DC 2 VDC 30 VDC 1 kHz AC 4 Vims 30 VAC Input current DV DPU eaaa aae 1 5 mA 24 V IPU ernaria renesans 7 0 mA Tsolation rn a eae 42 VDC from computer ground Propagation delay Low to high s sssseeseseeseseesessesessesess 10 us High to loWaessuncosannoweniia 250 us Rise timeni eani eenaa ise 10 ns max Ball time sss aeiiseetiteest nna 10 ns max Power Requirement Digital power 00 eeeeeesseeeeereeeeeee 61 mW max Physical Characteristics DIMENSIONS 20 00 00 cee eececeeeeeeseseseseseteeeeeees 8 89 cm x 2 92 cm x 1 85 cm 3 50 in x 1 15 in x 0 73 in Mas 4st isc search ed Me tet A 28 6 g 1 0 oz The switching characteristics turn on time switching time and turn off time of the optical isolator used on the board limit the data transfer rate SCC DI01 Isolated Digital Input Module User Guide 4 ni com T O connectors 00 eee eeeeeeeeeeeeeeeees One 20 pin right angle male connector one 2 pin screw terminal Field wiring diameter ee 28 to 16 AWG Maximum Working Voltage Maximum working voltage refers to the signal voltage plus the common mode voltage Channel to earth oer 42 V Installation Category 2 Module to module 0 0 0 eee eeeeeeeeeeeneees 42 V Installation Category 2 Environmental Operating temperature 0 to 50 C Storage temperature 00 eee 20 to 70 C H midity sreserircai s2. ni com Device Specific Information aye Note For general SCC module installation and signal connection information and information about the SC 2350 carrier refer to the SCC Quick Start Guide available for download at ni com manuals Installing the Module UN Caution Refer to the Read Me First Safety and Radio Frequency Interference document before removing equipment covers or connecting disconnecting any signal wires Plug the SCC DIO1 into any digital input output socket J X 9 where X is 0 to 7 on the SC 2345 When you follow the procedure in the SCC Quick Start Guide the SC 2345 routes the digital input signal to channel PO X on the E Series DAQ device Connecting the Input Signals 3 Note The signal names have changed Refer to ni com info and enter rdtntg to confirm the signal names Signal SCC DI01 E Series Source Vn 2h yw 4 3 3 kQ PO X 1 2W D GND Vcom 1 Figure 1 SCC DI01 Signal Connections For information about how to configure the SCC DIO1 module using NI DAQmx refer to the SCC Quick Start Guide National Instruments Corporation 3 SCC DI01 Isolated Digital Input Module User Guide Specifications These specifications are typical at 25 C unless otherwise stated Input Characteristics Number of channels ccccceeeeeseeeeees 1 Maximum input voltage ee 30 VDC or 30 VAC Digital logic levels
3. A USER GUIDE SCC DI01 Isolated Digital Input Module The SCC DIO1 is a single channel optically isolated digital input module that can sense AC and DC digital signals including TTL up to 30 VDC or 30 VAC Conventions 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 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 see the Read Me First Safety and Radio Frequency Interference document shipped with the product for precautions to take This icon denotes a note which alerts you to important information 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 PP o bold Bold text denotes items that you must select in software such as menu items and dialog box options Bold text also denotes parameter names italic Italic text denotes variables emphasis a cross reference or an introduction to a key concept This font also denotes text that is a placeholder for a word or value that y
4. ges The SCC DIO1 registers a logic high when a positive or negative DC voltage of 2 V or more exists across the screw terminals If no voltage is present the SCC DIO1 registers a logic low Sensing AC Voltages The SCC DIO1 registers a logic high when an AC voltage exists across the screw terminals Signals with low amplitude and low frequency cause the SCC DIO1 to register alternating logic highs and logic lows Sinusoidal signals of 1 kHz or higher frequency and 4 Vms or higher amplitude cause the SCC DIO1 to register a constant logic high SCC DI01 Isolated Digital Input Module User Guide 8 ni com Isolating Signals The Vy and Vcom signals are isolated from the inputs of other channels and are also isolated from the SCC DIO1 internal power and ground signals The isolation barrier protects the SCC DIO1 and other equipment connected to it from voltages up to 42 VDC Voltages higher than 42 VDC can damage the SCC DIO1 and other equipment National Instruments NI ni com and NI DAQ are trademarks of National Instruments 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 orni com patents 371076B 01 Mar04 2002 2004 National Instruments Corp All rights reserved
5. h by model number or product line and click the appropriate link in the Certification column SCC DI01 Isolated Digital Input Module User Guide 6 ni com 1 0 Connector Pin Assignments Figure 2 shows the I O connector pins on the bottom of the module va OO OO Q Z P OO OO OO OO OO OO 1 Pin1 2 Pin2 3 PWB Key 4 Pin19 5 Pin20 Figure 2 SCC Module Bottom View Table 1 lists the signal connection corresponding to each pin GND is the reference for the 5 V supply Table 1 SCC DI01 Module Pin Assignments Pin Number Signal Name 1 p 3 4 _ 5 _ 6 7 PO X 8 9 5 V 10 GND 11 National Instruments Corporation SCC DI01 Isolated Digital Input Module User Guide Table 1 SCC DI01 Module Pin Assignments Continued Pin Number Signal Name 12 Theory of Operation Power Up Condition At power up the SCC DIO1 registers a logic low if there are no connections to the inputs Status LED The SCC DIO1 has a status LED that indicates when an input signal registers a logic high or a logic low The LED is located above the screw terminals If the LED is off the input signal is registering a logic low on the digital line If the LED is on the input signal is registering a logic high on the digital line Sensing DC Volta
6. nas 10 to 90 RH noncondensing Maximum altitude cccceeecceeeeseees 2 000 m Pollution Degree indoor use only 2 Safety The SCC DIO1 meets the requirements of the following standards for safety and electrical equipment for measurement control and laboratory use e TEC 61010 1 EN 61010 1 e UL3101 1 UL 61010B 1 e CAN CSA C22 2 No 1010 1 Sy Note For UL and other safety certifications refer to the product label or visit ni com hardref nsf search by model number or product line and click the appropriate link in the Certification column National Instruments Corporation 5 SCC DI01 Isolated Digital Input Module User Guide Electromagnetic Compatibility ESSO S nnen EN 55011 Class A at 10 m FCC Part 15A above 1 GHz TMMUILY a T EN 61326 1997 A2 2001 Table 1 CE C Tick and FCC Part 15 Class A Compliant B Note For full EMC compliance operate this device with shielded cabling In addition all covers and filler panels must be installed CE Compliance This product meets the essential requirements of applicable European Directives as amended for CE marking as follows Low Voltage Directive safety 73 23 EEC Electromagnetic Compatibility Directive EMC 0 eeeeeeeeeeseereereee 89 336 EEC nye Note Refer to the Declaration of Conformity DoC for this product for any additional regulatory compliance information To obtain the DoC for this product visit ni com hardref nsf searc
7. ou must supply Qr NATIONAL p INSTRUMENTS monospace Text in this font denotes text or characters that you should enter from the keyboard sections of code programming examples and syntax examples This font is also used for the proper names of disk drives paths directories programs subprograms subroutines device names functions operations variables filenames and extensions SC 2345 SC 2345 refers to both the SC 2345 connector block and the SC 2345 with configurable connectors SCC SCC refers to any SCC Series signal conditioning module What You Need to Get Started To set up and use the SCC DIO1 you need the following items m Ooovovowo oO Ooo vo SC 2345 2350 with one of the following SCC PWRO1 SCC PWRO0O2 and the PSO1 power supply SCC PWRO3 requires a 7 to 42 VDC power supply not included One or more SCC DIO1 modules SC 2345 2350 User Manual available at ni com SCC DIO1 Isolated Digital Input Module User Guide SCC Quick Start Guide available at ni com Read Me First Safety and Radio Frequency Interference SC 2345 Quick Reference Label 68 pin E Series DAQ device documentation and 68 pin cable of less than 2 m length 1 8 in flathead screwdriver Numbers 1 and 2 Phillips screwdrivers Wire insulation strippers NI DAQ current version for Windows 2000 NT XP Me My Note The Macintosh operating system is not supported SCC DI01 Isolated Digital Input Module User Guide 2
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