SCC-DO01 Isolated Digital Output Module User Guide
Contents
1. Figure 2 Connecting a Load Ri gqp2 to Voyt and Vsg Configuration 2 Figure 2 shows Configuration 2 with a load Ry oap2 connected to the Voyr and Vgg terminals and a voltage supply connected to the Vcom and Vss terminals Connect Configuration 2 to the SCC DOO1 by completing the following steps 1 Remove all power from the signal lines 2 Strip 7 mm 0 27 in of insulation from the ends of the signal wires 3 Insert the wires into the screw terminals a Connect the negative lead of the voltage supply to screw terminal 1 Vcom b Connect the negative lead from Ry g p gt to screw terminal 2 Voyr c Connect the positive lead of the voltage supply and the positive lead from Ry gap2 to screw terminal 1 Vss 4 Tighten the screws to 0 5 to 0 6 N m 4 4 to 5 3 lb in of torque For information about configuring the SCC DOO1 module using NI DAQm x refer to the SCC Quick Start Guide National Instruments Corporation 5 SCC DO001 Isolated Digital Output Module User Guide Specifications These specifications are typical at 25 C unless otherwise stated Output Characteristics Compatibility 0 eeeeeeeseeeees TTL compatible Number of channels eee eee 1 Supply voltage range eee 5 to 24 VDC Digital logic levels Configuration 1 refer to Figure 1 Output Voltage Level Logic Level between Vouyr and Vcom Low Io 0 mA OV High Io 25 mA 22 VDC at Vss 24 V 3 VDC at V552. 17 18 19 20 S Theory of Operation Setting the Power Up State of the SCC D001 Status LED Circuit Protection The switch for setting the power up state of the SCC DOO01 is on the top of the module Switch it to High or Low depending on whether you want the output state to be high or low on power up The switch does not override the output state as determined by the E Series DAQ device The SCC DOO1 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 Protection Against Spike Voltages Two clamping diodes protect the SCC DOO1 against spike voltages caused by inductive loads and long circuit wires One diode is connected across Vss and Vour and the other diode is connected across Voyz and Vcom National Instruments Corporation 11 SCC D001 Isolated Digital Output Module User Guide Signal Isolation The Vcom Vss and Vour signals on each SCC DOO1 are isolated from other channels and from the SCC DOO1 internal power and ground signals The isolation barrier protects the SCC DOO1 and other equipment from voltages up to 42 VDC Common mode voltages higher than 42 VDC can damage the SCC DOO1 and other equipment National Instruments NI ni com and NI DAQ are trademarks of National Instruments C
3. 5 V Configuration 2 refer to Figure 2 Output Voltage Level Logic Level between Voyr and Vcom Low Io2 25 mA 0 4 V High o2 0 mA Vss Maximum continuous load current Io Configuration 1a eee 86 mA Configuration 2 00 0 eee eeeeeeeee 120 mA Minimum load resistance at Vss 24 V Rroap1 sesessssesesosossssosossssosesossosossssesesoe 196 Q Rroap2 sesesossesesosessssssossososessssosessssesesoo 184 Q SCC D001 Isolated Digital Output Module User Guide 6 120 80 40 Load Current Io mA Output Voltage Level V Figure 3 Load Current versus Output Voltage Configuration 1 Load Current Io mA A oO 24 22 20 18 16 Output Voltage Level V Figure 4 Load Current versus Output Voltage Configuration 2 Propagation delay Low to high ceececeseeeseeeseeeeeeeees 400 us typ High to LOW oinnia 300 us typ RiS TMG 4 sees cdi iki wind die ena 120 us typ Fall Ume rizses 25 us typ 1 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 National Instruments Corporation 7 SCC DO01 Isolated Digital Output Module User Guide Power Requirement Digital power 0 cece eeeeeseeeeereeeeee 69 mW max Physical Characteristics DIMENSIONS 20 0 0 ccc cece ce ceeceseseseeeset
4. 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 you 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 DOO1 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 DOO1 modules SC 2345 2350 User Manual available at ni com SCC DOOI Isolated Digital Output 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
5. Windows 2000 NT XP Me My Note The Macintosh operating system is not supported SCC DO001 Isolated Digital Output Module User Guide 2 ni com Device Specific Information 3 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 DO01 into any digital input output PO socket J X 9 where X is 0 to 7 on the SC 2345 When you configure the SC 2345 according to the procedure in the SCC Quick Start Guide the SC 2345 routes the output signal from digital line PO X on the E Series DAQ device Connecting Loads to the SCC D001 3 Note The signal names have changed Refer to ni com info and enter rdtntg to confirm the signal names Figure 1 and Figure 2 show two ways to connect a load and an external voltage supply to the SCC DO01 These configurations have different electrical characteristics as described in the Specifications section National Instruments Corporation 3 SCC D001 Isolated Digital Output Module User Guide E Series SCC DO01 5V Aq 9 Status EED 66 5 Q 1 2 w 3 Vas m VV 16 i PO X AL
6. 5 24 VDC Power Up Di lo1 T D GND State Switch AM sie 2 Vout o aie Fax Load RLoani 1 Vcom wv 16 Q 77 7 7 External voltage source may be floating or ground referenced Figure 1 Connecting a Load R gap tO Vcom and Voyr Configuration 1 Figure 1 shows Configuration 1 with a load Ry gap connected to the Vcom and Voyr terminals and a voltage supply connected to the Vss and Vcom terminals Connect Configuration 1 to the SCC DOO1 by completing the following steps 1 2 3 Remove all power from the signal lines Strip 7 mm 0 27 in of insulation from the ends of the signal wires Insert the wires into the screw terminals a Connect the negative lead of the voltage supply and the negative lead from Ry oap to screw terminal 1 Vcom b Connect the positive lead from Ry gap to screw terminal 2 Voyr c Connect the positive lead of the voltage supply to screw terminal 1 Vss Tighten the screws to 0 5 to 0 6 N m 4 4 to 5 3 Ib in of torque SCC DO01 Isolated Digital Output Module User Guide 4 ni com E Series SCC DO01 PO X D GND 5V An o o Status LED 66 5 Q 1 2w 3 Veg WW o 16 Q lo2 PS Load Power Up RLoan2 State Switch 2 Vout el ale 7 5 24 VDC ZS WWW 16 9 aes 77 7 External voltage source may be floating or ground referenced
7. A USER GUIDE SCC D001 Isolated Digital Output Module The SCC DOO01 is a single channel optically isolated digital output module The output circuitry consists of a photomos relay and a load resistor You can use the SCC DOO1 with a 5 24 VDC external voltage supply to switch external devices such as transistors and solid state relays 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 gt Pe o When symbol is marked on a product it denotes a component that may be hot Touching this component may result in bodily injury 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
8. 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 eee eeeeeeeeeneeeees 89 336 EEC Sy 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 search by model number or product line and click the appropriate link in the Certification column National Instruments Corporation 9 SCC D001 Isolated Digital Output Module User Guide Figure 5 shows the I O connector on the bottom of the SCC DO01 OO OO OO OO OO OO OO OO Q 1 Pin1 2 Pin2 3 PWB Key 4 Pin19 5 Pin20 Figure 5 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 D001 Pin Signal Connections Pin Number Signal 1 P0 X O oe an Nn gt w N 5 V 10 GND SCC D001 Isolated Digital Output Module User Guide 10 ni com Table 1 SCC D001 Pin Signal Connections Continued Pin Number Signal 14 15 16
9. eseeeenees 8 89 cm x 2 92 cm x 1 85 cm 3 50 in x 1 15 in x 0 73 in Ma Sun ei eda 28 6 g 1 0 oz T O connectorsS e seesseeeeeeeesreeerrrsrsresee One 20 pin right angle male connector one 2 pin screw terminal Field wiring diameter 0 00 0 ee 28 to 16 AWG Maximum Working Voltage Environmental Safety Maximum working voltage refers to the signal voltage plus the common mode voltage Channel to earth eee eeeeeee 42 V Installation Category 2 Module to module eee eeeeeeseeeeeeeee 42 V Installation Category 2 Operating temperature 00 ee 0 to 50 C Storage temperature eee eee 20 to 70 C Humidity sinerien nni 10 to 90 RH noncondensing Maximum altitude 2 000 m Pollution Degree indoor use only 2 The SCC DO01 meets the requirements of the following standards for safety and electrical equipment for measurement control and laboratory use e IEC 61010 1 EN 61010 15 e UL3111 1 UL 6101B 1 e CAN CSA C22 2 No 1010 1 SCC D001 Isolated Digital Output Module User Guide 8 ni com B Note For UL and other safety certifications refer to the product label or visit ni com hardref nsf search by the model number or product line and click the appropriate link in the Certification column Electromagnetic Compatibility EMSS OS aaae EE EN 55011 Class A at 10 m FCC Part 15A above 1 GHz TiM Y eio EN 61326 1997 A2 2001 Table 1 CE C Tick and FCC Part 15 Class A Compliant 3
10. orporation 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 371077B 01 Mar04 2002 2004 National Instruments Corp All rights reserved
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