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ER-8/16 User Manual - National Instruments

1. National Instruments Corporation 2 1 ER 8 16 User Manual Setup Chapter 2 14 OJO NS O 14 OJO MI O 51010 M OJO XZ O 5 OF O IN OF O N7 O 3 OFO M13 GPS COMi4 Elfo CMIS af a O O O 0 0 00 ojo ojo Ole o o m COM myo C o DS4 o o a20 omaojo 4 OJ O 4 O O eoo O RPS 000000000 ONAL RUMENTS PORATION 1995 J LIOOCOO0000 RP3 f 3 S N ASSY183057 0 O O mu 3 OF O gofo O Kil 10 S COM e OfO 2 O O 10 OF O INI a O ojo ojo O Como O ort a J o 000000000000 0000000900000 3 ETA 2 o Io ot O OIO OIO OIO OJO OIO O LNs OJO O o TU 2 c omao o id OJOMIOJO Bec 2
2. Channel Isolation All contacts have a working voltage of 250 VAC or 30 VDC This product complies with IEC 1010 for Voltage Installation Category II Pollution Degree 2 Refer to the specifications listed in Appendix A Specifications for further details before connecting the signals to the relay contacts Contact Protection for Inductive Loads When inductive loads are connected to the relays a large counter electromotive force can occur at relay switching time because of the energy stored in the inductive load These flyback voltages can severely damage the relay contacts and greatly reduce the relay life It is best to limit these flyback voltages at your inductive load by installing across your inductive load a flyback diode for DC loads as shown in Figure 3 1 or a metal oxide varistor MOV for AC loads Refer to the Diode Circuit and Varistor Circuit information in the table in the Contact Protection Circuit section of Appendix C Contact Protection for more information If placing a diode or an MOV across the load is not possible use arc suppressor pads on the ER 8 16 to limit the voltage spike generated during the switching of the inductive loads These pads are between the COM position and the NO position and between the COM position and the ER 8 16 User Manual 3 4 National Instruments Corporation Chapter 3 Signal Connections NC position of the relays Refer to the CR Circuit information in the table in the Contact P
3. and SCXI are trademarks of National Instruments Corporation Product and company names listed are trademarks or trade names of their respective companies WARNING REGARDING MEDICAL AND CLINICAL USE OF NATIONAL INSTRUMENTS PRODUCTS National Instruments products are not designed with components and testing intended to ensure a level of reliability suitable for use in treatment and diagnosis of humans Applications of National Instruments products involving medical or clinical treatment can create a potential for accidental injury caused by product failure or by errors on the part of the user or application designer Any use or application of National Instruments products for or involving medical or clinical treatment must be performed by properly trained and qualified medical personnel and all traditional medical safeguards equipment and procedures that are appropriate in the particular situation to prevent serious injury or death should always continue to be used when National Instruments products are being used National Instruments products are NOT intended to be a substitute for any form of established process procedure or equipment used to monitor or safeguard human health and safety in medical or clinical treatment Contents About This Manual ito ix Organization of This Manual scada rindiendo ix Conventions Used in This Manual jcss cos ts1 ncsicesaesotadydndsasatnnodunsi gud ere eio tees ink ue PE Raus X National Instruments Doc
4. A e he J RETI e lt lt 1 R R2 Contacts for R R Double pole relay Fig 19 Bad example of form A and B use R o Push button Switch R e 3 R R Contacts for R R Double pole relay Shorts Between Different Electrodes Although there is a tendency to select miniature control components because of the trend toward miniaturizing electrical control units care must be taken when selecting the type of relay in circuits where different voltages are National Instruments Corporation applied between electrodes in a multi pole relay especially when switching two different power supply circuits This is not a problem that can be determined from sequence circuit diagrams The construction of the es control component itself must be examined and sufficient margin of satety must be provided especially in creepage between electrodes space distance presence of barrier etc ER 8 16 User Manual Contact Protection Appendix C ELECTRONIC CIRCUIT DRIVE BY MEANS OF A RELAY e Chatterless electronic circuit Even though a chatterless characteristic is a feature of relays this is to the fullest extent a chatterless electrical circuit much the same as a mercury relay To meet the requirement for such circuits as the input to a binary counter there is an electronic chatterless method in which chattering is absolutely not permissible Even if chatt
5. Mexico 5 520 2635 Netherlands 0348 433466 Norway 32 84 84 00 Singapore 2265886 Spain 91 640 0085 Sweden 08 730 49 70 Switzerland 056 200 51 51 Taiwan 02 377 1200 U K 01635 523545 O National Instruments Corporation E 1 Fax Number 03 9879 6277 0662 45 79 90 19 02 757 03 11 905 785 0086 514 694 4399 45 76 26 02 09 502 2930 01 48 14 24 14 089 714 60 35 2686 8505 03 5734816 02 41309215 03 5472 2977 02 596 7455 5 520 3282 0348 430673 32 84 86 00 2265887 91 640 0533 08 730 43 70 056 200 51 55 02 737 4644 01635 523154 ER 6 16 User Manual Technical Support Form Photocopy this form and update it each time you make changes to your software or hardware and use the completed copy of this form as a reference for your current configuration Completing this form accurately before contacting National Instruments for technical support helps our applications engineers answer your questions more efficiently If you are using any National Instruments hardware or software products related to this problem include the configuration forms from their user manuals Include additional pages if necessary Name Company Address Fax Phone Computer brand Model Processor Operating system Speed MHz RAM MB Display adapter Mouse yes no Other adapters installed Hard disk capacity MB Brand Instruments used National Instruments hardware product model R
6. PB1 PC1 21 PD1 PAO 23 24 PBO PCO 23 PDO 5V 25 26 GND 5 V 25 GND a 26 Pin IN Connector b 26 Pin OUT Connector Figure B 3 26 Pin Internal Connectors Table B 3 26 Pin IN Connector Pin Descriptions Signal Name Description 10 12 14 PB lt 7 0 gt Port B Channels 7 through 0 Each of these pins controls 16 18 20 the relay channel A digital high on these pins connects the 22 24 COM contact of a channel to the NO contact of that channel A digital low on these pins connects the COM contact of a channel to the NC contact of that channel 9 11 13 PA lt 7 0 gt Port A Channels 7 through 0 Each of these pins controls 15 17 19 the relay channel A digital high on these pins connects the 21 23 COM contact of a channel to the NO contact of that channel A digital low on these pins connects the COM contact of a channel to the NC contact of that channel 2 4 6 8 Ground These pins are connected to the internal ground on 26 the ER 8 16 1 3 5 7 5 VDC supply These pins are connected to the internal 25 INT 5 VDC supply on the ER 8 16 National Instruments Corporation B 5 ER 8 16 User Manual I O Connectors 10 12 14 16 18 20 22 24 Table B 4 26 Pin OUT Connector Pin Descriptions Signal Name PD lt 7 0 gt Description Port D Channels 7 through 0 These sig
7. 24 device DIO 32 board DIO type board Lab board E Series device MIO board ER 8 16 User Manual Bold text denotes menu items function panel items and dialog box buttons or options Italic text denotes emphasis a cross reference or an introduction to a key concept Bold italic text denotes a note caution or warning Angle brackets containing numbers separated by an ellipsis represent a range of values associated with a bit signal name or port for example ACH lt 0 7 gt stands for ACHO through ACH7 Device refers generically to National Instruments boards cards or modules ER 8 16 refers to the ER 8 or ER 16 unless otherwise noted DIO device refers to National Instruments digital I O devices such as the AT DIO 32F NB DIO 24 NB DIO 96 NB DIO 32F PC DIO 24 DAQCard DIO 24 and PC DIO 96 unless otherwise noted DIO 24 device refers to the National Instruments NB DIO 24 DAQCard DIO 24 and PC DIO 24 digital I O devices unless otherwise noted DIO 32 board refers to the National Instruments AT DIO 32F and NB DIO 32F digital I O boards unless otherwise noted DIO type board refers to the National Instruments DIO boards with only digital I O capabilities These boards include the DIO 24 DIO 32F and DIO 96 boards unless otherwise noted Lab board refers to the National Instruments Lab LC Lab NB Lab PC and Lab PC boards unless otherwise noted E Series device refers to National Instruments digit
8. BY FAULT OR NEGLIGENCE ON THE PART OF NATIONAL INSTRUMENTS SHALL BE LIMITED TO THE AMOUNT THERETOFORE PAID BY THE CUSTOMER NATIONAL INSTRUMENTS WILL NOT BE LIABLE FOR DAMAGES RESULTING FROM LOSS OF DATA PROFITS USE OF PRODUCTS OR INCIDENTAL OR CONSEQUENTIAL DAMAGES EVEN IF ADVISED OF THE POSSIBILITY THEREOF This limitation of the liability of National Instruments will apply regardless of the form of action whether in contract or tort including negligence Any action against National Instruments must be brought within one year after the cause of action accrues National Instruments shall not be liable for any delay in performance due to causes beyond its reasonable control The warranty provided herein does not cover damages defects malfunctions or service failures caused by owner s failure to follow the National Instruments installation operation or maintenance instructions owner s modification of the product owner s abuse misuse or negligent acts and power failure or surges fire flood accident actions of third parties or other events outside reasonable control Copyright Under the copyright laws this publication may not be reproduced or transmitted in any form electronic or mechanical including photocopying recording storing in an information retrieval system or translating in whole or in part without the prior written consent of National Instruments Corporation Trademarks LabVIEW NI DAQ DAQCard DAQPad
9. Instruments Corporation D 1 ER 8 16 User Manual Takamisawa VE Series Relay Technical Data Appendix D VE 3 5 Amps Subminiature Relay Slim Type Power Relay BFEATURES UL CSA VDE Recognized 1 Form A SPST NO or 1 Form C SPDT Contact Low Cost Miniature Relay with Big Performance in Small Package S Surge Strength 4000V or 6000V CUm e Slim Type Meet High Density Mounting Requirement is Wide Operating Range e Easy Circuit Design with Completely Separated Terminal Arrangement Coil amp Contact Terminals e Washable Type Backfilled with Nitrogen STRUCTURE Base plate Material with high thermal stability amp solvent resistance is emploved Stationary spring N C Highly conductive spring is em ployed Yoke Movable spring Highly conductivity spring is em ployed Coil terminal Pre soldered terminal Armature xs Bobbin Material with high thermal stabili 1y flameproof amp tolerance is ern ployed AAA 127 ER 8 16 User Manual D 2 O National Instruments Corporation Appendix D Takamisawa VE Series Relay Technical Data VE Relay SPECIFICATIONS CONTACT COIL e Arrangement 1 Form A SPST NO or e Nominal Voltage 5 to 4BVDC 1 Form C SPOT e Nominal Power at 20 C Standard Type 360MW E VE H5 VE HM5 High Sensitive Type 250mW Silver cadmium oxide alloy e Operate Power at 209C Standard Type 177mW VE H VE HM
10. Q ZOZ ZOZ ZOZ ZOZ ZOZ ZOZ ZOZ OZO OSO OZO OZO OFO 0OZO0O OSO NNN OOO nom AAA wwo NNN CH7 Q NO 8 CH8 COM8 NC 8 Terminal Block ZOZ OZO OZ O CH10 C CoO OOO CH11 C mere remm CH12C sl CH13 C mere CH14 C mere CH15 C mere Zz zOz zOz zOz zOz zOz z OZO OZO O ZO OZO OZO OZO O as OOD NUM AAA 0000 NNN CH16 CO N Terminal Block Chapter 4 Theory of Operation Digital Interface There are four connectors with which to interface an ER 8 16 to digital devices or to daisy chain it to another ER 8 16 The two front connectors are marked DIO 24 and DIO 32 the two internal connectors are marked IN and OUT Use the internal connectors when daisy chaining the ER 8 16 or when using SC 205X Series cable adapters Warning Use only one of the connectors DIO 24 DIO 32 or IN at a time Using more than one of these connectors can damage your host computer DAQ device and the ER 8 16 National Instruments is NOT liable for any damages resulting from incorrect connections For additional information on signal connections refer to Chapter 3 Signal Connections Relay Channels Figure 4 2 shows the onboard equivalent circuit for the ER 8 16 When the channel receives a digital low signal the relay for that channel remains unenergized the NC contact shorts to the COM contact and the NO contact remains o
11. VIEW BOTTOM VIEW VE M Type 20 5702 10 5 92 2 2 9 1C y wo 2 012 508 127 10136 06 1 44 VE Type 20 5792 se 2 31 2 IR 2 610 NC EE E com c NE D 5 f il Le o 29 Nt q 4 US jer m rid um 2 54 2 54 127 136 061 i8 142 598 2 54 A e 131 ER 8 16 User Manual D 6 National Instruments Corporation Appendix E Customer Communication For your convenience this appendix contains forms you can use to request help from National Instruments or to comment on our products Filling out a copy of the Technical Support Form before contacting National Instruments helps us help you better and faster National Instruments provides comprehensive technical assistance around the world In the U S and Canada applications engineers are available Monday through Friday from 8 00 a m to 6 00 p m central time In other countries contact the nearest branch office You may fax questions to us at any time Corporate Headquarters 512 795 8248 Technical support fax 800 328 2203 512 794 5678 Branch Offices Phone Number Australia 03 9879 5166 Austria 0662 45 79 90 0 Belgium 02 757 00 20 Canada Ontario 905 785 0085 Canada Quebec 514 694 8521 Denmark 45 76 26 00 Finland 09 527 2321 France 01 48 14 24 24 Germany 089 741 31 30 Hong Kong 2645 3186 Israel 03 5734815 Italy 02 413091 Japan 03 5472 2970 Korea 02 596 7456
12. are working check the electrical continuity on fuses F1 and F2 If the continuity test fails on these fuses a fuse is blown You can either replace the fuse yourself or send it to National Instruments for replacement Note The fuses are socketed If you choose to replace them yourself the fuse specification is LIT PICOII 2 A 125 V fast The manufacturer is Littelfuse and the manufacturer part number is R251002T1 ER 8 16 User Manual 2 6 National Instruments Corporation Chapter 2 Setup 9 You can now test your ER 8 16 without making any connections to the screw terminals by writing to port A 0 When you write a digital 1 to port A 0 the DS1 LED should turn green indicating itis ON You may also hear a clicking sound Port A 0 corresponds to channel 1 on the ER 8 16 Use this procedure to test all the channels on your ER 8 16 Note LEDs are present only for verifying your digital cable connections Warning DO NOT connect any wires to the channel screw terminals when you are conducting this test National Instruments is NOT liable for any damages resulting from such connections If the ER 8 16 does not respond to the control signals check your cable connections and try again If the test fails again contact National Instruments Switch off your computer and the external power supply Make wire connections to the ER 8 16 channels by wiring to the proper screw terminals marked NC COM and NO For additional informat
13. chained ER 8 or ER 16 A digital high on these pins connects the COM contact of a channel to the NO contact of that channel A digital low on these pins connects the COM contact of a channel to the NC contact of that channel 45 46 43 49 48 44 50 47 PB lt 7 0 gt Port B Channels 7 through 0 Each of these pins controls the relay channel A digital high on these pins connects the COM contact of a channel to the NO contact of that channel A digital low on these pins connects the COM contact of a channel to the NC contact of that channel 41 36 42 35 40 38 39 37 PA lt 7 0 gt Port A Channels 7 through 0 Each of these pins controls the relay channel A digital high on these pins connects the COM contact of a channel to the NO contact of that channel A digital low on these pins connects the COM contact of a channel to the NC contact of that channel 26 28 30 32 34 Ground These pins are connected to the internal ground on the ER 8 16 17 25 27 29 31 33 ER 8 16 User Manual Not connected B 4 National Instruments Corporation Appendix B I O Connectors 26 Pin Internal Connectors 5 V GND 5 V GND 5 V GND 5 V GND 5 V GND 5 V GND 5 V 8 GND 5 V GND PA7 9 10 PB7 PC7 9 PD7 PA6 11 12 PB6 PC6 11 PD6 PAS 13 14 PBS PC5 13 PD5 PA4 15 16 PB4 PC4 15 PD4 PA3 17 18 PB3 PC3 17 PD3 PA2 19 20 PB2 PC2 19 PD2 PA1 21 22
14. external supply to the ER 16 the receiving unit Verify that SWI see Figure 2 1 is in the INT position on the receiving unit Connect the external supply to the sending unit The power supply will also be daisy chained through the NB7 cable to the expanded system Warning Connecting the cable to the wrong connector can damage the ER 8 16 or your DAQ device National Instruments is NOT liable for any damages resulting from such connections Using the SC 205X Series with the ER 8 You can use your SC 205X Series cable adapter with the Lab or MIO boards to control the ER 8 Connect the 26 pin cable to the ER 8 IN connector only In this configuration you can control only channels 1 through 8 Digital lines port A lt 0 7 gt as shown in Figure 3 3a control the relays Port B lt 0 7 gt is not used Warning When connecting more than one ER 8 with any of the SC 205X Series cable adapters verify that SW1 see Figure 2 1 is at the EXT position and that you are using an external power supply Connecting the cable to the wrong connector can damage the ER 8 16 or your DAQ device National Instruments is NOT liable for any damages resulting from incorrect connections DO NOT attempt to connect an ER 16 to any of the SC 205X Series cable adapters For additional information on the SC 205X Series cable adapters refer to the SC 205X Series User Manual ER 8 16 User Manual 3 8 O National Instruments Corporation Chapter 3 Signal Connect
15. form of contact contact switching speed and of bounce Because of contact transfer weiding abnormal wear increase in contact resistance and the various other damages which bring about unsuitable operation the following items require full investigation 1 Contact circuit voltage current and load Voltage AC and DC When there is inductance included in the circuit a rather high counter emf is generated as a contact circuit voltage and since to the extent of the value of that voltage the energy applied to the contacts causes damage with con sequent wear of the contacts and transfer of the contacts it is necesary to exercise care with regard to control capacity In the case of DC there is no zero Current point such as there is with AC and accordingly once a cathode arc has been generated because it is difficult to quench that arc the extended time of the arc is a major cause In addition due to the direction of the current being fixed the phenomenon of contact shift as noted separately below occurs in relation to the contact wear Ordinarily the approximate control capacity is mentioned in catalogues or similar data sheets but this alone is not sufficient With special contact circuits for the individual case the maker either estimates from the past experience or makes test on each occasion Also in catalogues and similar data sheets the control capacity that is mentioned is limited to resis
16. from date of shipment as evidenced by receipts or other documentation National Instruments will at its option repair or replace software media that do not execute programming instructions if National Instruments receives notice of such defects during the warranty period National Instruments does not warrant that the operation of the software shall be uninterrupted or error free A Return Material Authorization RMA number must be obtained from the factory and clearly marked on the outside of the package before any equipment will be accepted for warranty work National Instruments will pay the shipping costs of returning to the owner parts which are covered by warranty National Instruments believes that the information in this manual is accurate The document has been carefully reviewed for technical accuracy In the event that technical or typographical errors exist National Instruments reserves the right to make changes to subsequent editions of this document without prior notice to holders of this edition The reader should consult National Instruments if errors are suspected In no event shall National Instruments be liable for any damages arising out of or related to this document or the information contained in it EXCEPT AS SPECIFIED HEREIN NATIONAL INSTRUMENTS MAKES NO WARRANTIES EXPRESS OR IMPLIED AND SPECIFICALLY DISCLAIMS ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE CUSTOMER S RIGHT TO RECOVER DAMAGES CAUSED
17. tU YR TER E E Cen 10 000 000 operations min Electrical secs irte teeth aec en 100 000 at rated load Isolation Complies with IEC 1010 for Voltage Installation Category II Pollution Degree 2 Operate tim eret ere ede redet Ho dada 10 ms Release Me ci E E A E 5 ms Power Requirement External Supply Voltage ette ds Ghd nee ert EH EE D vague den 5 V 45 SA eus Mens uA M ELE 0 5 A for 8 channels 1 0 A for 16 channels 1 5 A for 24 channels 2 0 A for 32 channels 1 If you operate at high currents later operation at low currents may not be possible Relays are subject to normal wear based on the number of operations National Instruments Corporation A 1 ER 8 16 User Manual Specifications Appendix A Physical DIMENSIONS iii ibas 17 5 by 5 2 by 12 25 cm 6 9 by 2 05 by 4 82 in Connectors External niue E DIO 24 and DIO 32 50 pin male latching type ribbon cable front connectors Internal nascono cete auno ede IN and OUT 26 pin male latching type ribbon cable internal connectors Channel screw terminals occnnnnononncnnonononnnconnannnnnccnnnnnnanoconon 24 for ER 8 16 AWG wire max 48 for ER 16 18 AWG wire max Power supply screw terminals eese 2 Environment Operating temperature 0 to 50 C Storage temperature oe eee cee n Ern eiaa 55 to 150 C Rela ve humidity 4 2er eet e eie re eee hes 596 to 9096 noncondensing ER 8 16 User Manual A 2 National Instruments Corp
18. table on the right shows the relationship between typical loads and their inrush currents Type of load i Inrush current m Resistive load Steady state current 10 to 20 times the Solenoid load steady state current Motor load Sto 10 times the steady state current 10 to 15 times the Steady state current Incandescent lamp load Approx 3 times the Steady state current f 1 to 3 times the steady state current 20 to 40 times the Steady state current 5 to 15 times the steady state current Mercury lamp load Sodium vapor lamp load Capacitive load Transformer load O National Instruments Corporation C3 33 ER 8 16 User Manual Contact Protection Appendix C General Application Guidelines Load Inrush Current Wave and Time 1 Incandescent Lamp Load 2 Mercury Lamp Load i i 3 times 3 Fluorescent Lamp Load oe i i 5 to 10 times Contacts LL T CHE gt O30 T izi E for high power factor type 3to 5 minutes The discharge tube transformer choke coil capacitor etc are combined in common discharge lamp circuits Note that the inrush Approx 1 3 second current may be 20 to 40 times especially if inrush current rated current the power supply impedance is low in the A 10 to 15 times high power factor type 4 Motor Load 5 Solenoid Load 6 Electromagnetic Contac
19. the Glossary National Instruments Documentation The ER 8 16 User Manual is one piece of the documentation set for your DAQ system You could have any of several types of manuals depending on the hardware and software in your system Use the different types of manuals you have as follows e Your DAQ hardware user manuals These manuals have detailed information about the DAQ hardware that plugs into or is connected to your computer Use these manuals for hardware installation and configuration instructions specification information about your DAQ hardware and application hints Software manuals Examples of software manuals you may have are the LabVIEW and LabWindows CVI manual sets and the NI DAQ manuals After you set up your hardware system use either the application software LabVIEW or LabWindows CVI manuals or the NI DAQ manuals to help you write your application If you have a large and complicated system it is worthwhile to look through the software manuals before you configure your hardware National Instruments Corporation xi ER 8 16 User Manual About This Manual e Accessory installation guides or manuals If you are using accessory products read the terminal block and cable assembly installation guides or accessory device user manuals They explain how to physically connect the relevant pieces of the system Consult these guides when you are making your connections Customer Communication National Instrument
20. to 3 3 using SC 205X series with ER 8 16 3 8 specifications channel ratings A 1 environment A 2 physical A 2 power requirements A 1 ER 8 16 User Manual Index surge protector pads description table 2 3 parts locator diagram 2 2 SW 1 power supply switch description table 2 3 parts locator diagram 2 2 T Takamisawa VE series relay technical data D 1 technical support E 1 theory of operation block diagram 4 2 digital interface 4 3 functional overview 4 1 relay channels 4 3 U unpacking the ER 8 16 1 2 V voltage hazardous 2 4 W wire gauge channel connections 3 4 ER 6 16 User Manual Index 4 National Instruments Corporation
21. to the CR circuit 2 to reverse breakdown voltage of about 2 to 3 times i one 5 times the release time listed in the catalog the power supply voltage Contact a ee 4h Inductive load Diode and zener diode circuit c Effective when the release time in the diode circuit is too long Use a zener diode with a zener voltage about the same as the power supply voltage i Using the stable voltage characteristics of the Contact 3 varistor this circuit prevents excessively high ASA RO p IS voltages from being applied across the n ENS ES i te cy contacts This circuit also slightly delays the Varistor circuit Or Varistor P 5 EE LO Y release time Effective when connected to both NM E 3 i contacts if the power supply voltage is 24 or j AA E 48V and the voltage across the load is 100 to 200V Avoid using the protection circuits Fig 15 Contact Contact shown in the figures on the right ULP TET AA m i Although DC inductive loads are usually N Loa p a RIS aod arae ns E more difficult to switch than resistive 0 good Tsuppy 2 9 Tsuppy T j loads use of the proper protection a l E UL EP DM EL erre Ian circuit will raise the characteristics to that for resistive loads Fig 15 Although extremely effective in arc suppression as the contacts open the contacts are susceptible to welding since energy is stored in C when the contacts open and d
22. 2 boards and the bottom connector DIO 24 is for interfacing to DIO 24 devices Warning Use only one connector either the DIO 24 or the DIO 32 connector DO NOT connect cables to both connectors Connecting the cable to the wrong connector can damage the ER 8 16 or your DAQ device National Instruments is NOT liable for any damages resulting from such connections Using DIO 24 Devices If you are using a National Instruments DIO 24 device to control the ER 8 16 connect the cable to the DIO 24 connector National Instruments Corporation 3 1 ER 8 16 User Manual Signal Connections Chapter 3 You can control a maximum of 24 channels using this connector one ER 16 and one ER 8 Daisy chain the ER 8 to the ER 16 using the NB7 cable The ER 8 uses port A lt 0 7 gt to control channels 1 through 8 Port C lt 0 7 gt wraps back to the 26 pin OUT connector The ER 16 uses port A lt 0 7 gt to control channels 1 through 8 and port B lt 0 7 gt to control channels 9 through 16 Port C lt 0 7 gt wraps back to the 26 pin OUT connector For additional information on daisy chaining refer to the Daisy Chaining the ER 8 16 section later in this chapter Using DIO 32 Boards If you are using a National Instruments DIO 32 board to control the ER 8 16 connect the cable to the DIO 32 connector Note You will need an external 5 V power supply if you use this connector Warning Connecting the cable to the wrong connector can damag
23. 3 3 ER 8 16 Configurations with DIO Devices National Instruments Corporation 3 9 ER 8 16 User Manual Signal Connections Chapter 3 Figure 3 4 shows the possible DAQ system configurations using National Instruments multifunction DAQ devices and the ER 8 16 PortA E Series MIO Cable 2 Digital O 1200 Series cus NB7 Cable Feces Cot IE MA NB7 Cable NB7 Cable gt 3 Port A DAQCard 700 B7 Cable NB7 Cable gt SC ER AO R PC LPM 16 SC 2055 ER 8 PC AO 2DC ER 8 Port B NB7 Cable 3 A Port A Port B Port DAQCard AO 2DC PSH27 50F D1 5 ems DAQCard AO 2DC PSH27 50F D1 Cable ER 16 3 Port A DIO 24 NB7 Cable gt Boards ER 8 or other 8 channel accessories Na Port B NB7 Cable gt M gt ER 8 or other 8 channel accessories V Port C NB7 Cable ER 8 or other 8 channel accessories 1 E Series boards except AT MIO 16DE 10 MIO boards except AT MIO 16D 2 Cable Options AT MIO 16E 2 AT MIO 16E 10 AT MIO 16XE 50 SH6850 shielded cable or R6850 ribbon cable AT MIO 16F 5 AT MIO 16 AT MIO 16X NB1 cable AT MIO 64E 3 R1005050 ribbon cable pin 1 50 AT MIO 64F 5 Type NB5 cable pin 1 50 3 External supply should be connected to the ER 8 16 Figure 3 4 ER 8 16 Configurations with Multifunction DAQ Devices ER 8 16 User
24. 4 360 VE 18H M S E K VE 18H M S5 K VE 5H M S E K VE 5H M S5 K 250 VE 6H M S EHX VE GH M S5K 6 145 43 0 3 250 L VE SH M S E K VE 9H M S5 K 9 325 6 5 0 45 250 Z VE 12H MIS E K VE T2H M S5 K 12 575 8 6 0 6 250 1 300 250 igh Sensitive Type VE 24H M S E K VE 24H M S5 K VE 48H M S E K 24 L VE 48H M S5 K Dmepns Con Power Temperature Rise deg 80 e 2 e S b a Coil Temperature Rise fua e 7 Ds D 0 4 Cot owerlWi 0 6 2 310 0 8 1 0 1 2 250 250 no T 48 9 220 j 34 7 j 2 4 E CHARACTERISTIC DATA Timing Operating Range ZR enter aa eee Am VE Type m m 4 1 Td E mn do o o o Nominal Voltage Muluplyng Factor Ambient Ter ER 8 16 User Manual D 4 129 O National Instruments Corporation Appendix D VE Relay Takamisawa VE Series Relay Technical Data Operating Range Nominal Voltage 0 20 40 60 80 100 Ambient Temperature C E REFERENCE DATA Distribution of Operate amp Release Voltage 00 SVEC2HSK Distributiant 8l 3 19 20 32 40 Nominal voltage C
25. 6 e Chapter 2 Setup describes how to set up the ER 8 16 Chapter 3 Signal Connections describes the signal connections channel connections and digital interface to the ER 8 16 e Chapter 4 Theory of Operation contains a functional overview of the ER 8 16 and explains the operation of each functional unit making up the ER 8 16 e Appendix A Specifications lists the specifications of the ER 8 16 e Appendix B O Connectors contains the connector pinouts and pin descriptions for the ER 8 16 e Appendix C Contact Protection contains technical data on contact protection when you are switching inductive loads e Appendix D Takamisawa VE Series Relay Technical Data contains a manufacturer data sheet for the relay used on the ER 8 16 e Appendix E Customer Communication contains forms you can use to request help from National Instruments or to comment on our products The Glossary contains an alphabetical list and description of terms used in this manual including abbreviations acronyms metric prefixes mnemonics symbols and terms National Instruments Corporation ix ER 8 16 User Manual About This Manual The ndex contains an alphabetical list of key terms and topics used in this manual including the page where each one can be found Conventions Used in This Manual The following conventions are used in this manual bold italic bold italic lt gt device ER 8 16 DIO device DIO
26. ER 8 16 User Manual An 8 Channel or 16 Channel SPDT Relay Accessory for Data Acquisition Boards December 1996 Edition Part Number 371197A 01 Copyright 1995 1996 National Instruments Corporation All Rights Reserved National Instruments Corporate Headquarters 6504 Bridge Point Parkway Austin TX 78730 5039 512 794 0100 Technical support fax 800 328 2203 512 794 5678 Branch Offices Australia 03 9879 5166 Austria 0662 45 79 90 0 Belgium 02 757 00 20 Canada Ontario 905 785 0085 Canada Qu bec 514 694 8521 Denmark 45 76 26 00 Finland 09 527 2321 France 01 48 14 24 24 Germany 089 741 31 30 Hong Kong 2645 3186 Israel 03 5734815 Italy 02 413091 Japan 03 5472 2970 Korea 02 596 7456 Mexico 5 520 2635 Netherlands 0348 433466 Norway 32 84 84 00 Singapore 2265886 Spain 91 640 0085 Sweden 08 730 49 70 Switzerland 056 200 51 51 Taiwan 02 377 1200 U K 01635 523545 Limited Warranty The ER 8 or ER 16 is warranted against defects in materials and workmanship for a period of one year from the date of shipment as evidenced by receipts or other documentation National Instruments will at its option repair or replace equipment that proves to be defective during the warranty period This warranty includes parts and labor The media on which you receive National Instruments software are warranted not to fail to execute programming instructions due to defects in materials and workmanship for a period of 90 days
27. High Sensitive Type 130mW Gold overlay silver nickel e Operate Release Voltage Please see Coil Data Chart VE HE VE HME eMax Continuous Voltage Please see Characteristic Data Silver nickel e Type csse Single Type GENERAL e Resistance initial VE HM VE H e insulation Resistance Min 1 000MQ at 500VDC Max 70m at SVDC 1A Dielectric Strength VE H VE HE VE H5 VE HME VE HE 750VAC 1 minute Max 100mQ at 6VDC 1A between open contacts VE HM5 VE H5 VE HM VE HME VE HM5 e Ratings resistive Nominal Load Max Switching Power Max Switching Voltage Max Switching Currert Max Carrying Current y Min Switching Load 1 eLife Expectancy Mechanical Electrical 1 Min Switching Load mentioned above are reference values Please perform the confirmation test with the actual load before production since reference values may vary according to switching frequencies Max 200mQ at 6VDC 1A VE HM VE HME VE HMS VE H5 5A 250VAC VE H VE HE 5A 250VAC NO 3A 250VAC NC VE HM VE HME VE H5 VE HM5 1 250VA VE H VE HE 1 250VA NO 750VA NC 250VAC 150VDC VE HM VE HME VE H5 VE HM5 5A VE H VE HE 5A NO 3A NC 7A VE HM VE H 5VDC 10mA VE HME VE HE VE HM5 VE H5 SVDC 100mA 1x 107 operations 1x 105 operations at nominal load does Guess Standard Type 5x 104 operations at nominal loa
28. If contacts are connected to both side of the power supply as shown in b there is a risk of shorting the power supply when relatively close contacts short 34 Fig 18 a Good example b Bad example ER 8 16 User Manual C4 National Instruments Corporation Appendix C Contact Protection General Application Guidelines Dummy Resistor Since voltage levels at the contacts used in low current circuits dry circuits are low poor conduction is often the result One method to increase reliability is to add a dummy resistor in parallel with the load to intentionally raise the toad current reaching the contacts Care is required especially for low level switching circuits 0 1V or less 0 2mA or less Contact material and of course use of bifurcated contacts must also be taken into consideration e Avoid Circuits Where Shorts Occur Between Form A and B Contacts Fig 19 1 The clearance between form A and B contacts in compact control components is small The occurrence of shorts due to arcing must be assumed 2 Even if the three N C N O and COM contacts are connected so that they short a circuit must never be designed to allow the possibility of burning or generating an overcurrent 3 A forward and reverse motor rotation circuit using switching of torm A and B contacts must never be designed o T D On tee Commercial AC power Os Home AC generator PO
29. Manual 3 10 National Instruments Corporation Chapter 4 Theory of Operation This chapter contains a functional overview of the ER 8 16 and explains the operation of each functional unit making up the ER 8 16 Functional Overview The ER 8 has eight SPDT relays controlled by eight digital lines connected to the ER 8 Each of these relays has an NC contact that is connected to the COM contact when the corresponding digital output line is low and an NO contact that is connected to the COM contact when the digital line is high The contacts are break before make so all three contacts are never short circuited The block diagram in Figure 4 1 illustrates the key functional components of the ER 8 16 National Instruments Corporation 4 ER 8 16 User Manual Theory of Operation EXT EXT 5 V 5 V INT ER 8 16 User Manual Switch PortA Rela Driver Port BT Lines Rela iaj Driver Digital Input 8 Lines Y Digital Input Included on the ER 16 CH1 RELAY CH2 RELAY CH3 RELAY CH4 RELAY CH5 RELAY CH6 RELAY CH7 RELAY CH8 RELAY CH9 RELAY CH10 RELAY CH11 RELAY CH12 RELAY CH13 RELAY CH14 RELAY CH15 RELAY CH16 RELAY Figure 4 1 ER 8 16 Block Diagram 4 2 National Instruments Corporation 24 Power Lines Chapter 4 Q CH2 Q CH3 Q CH4 CH5 Q CH6 Q
30. National Instruments is NOT liable for any damages resulting from such connections Only one of the following connectors should be used and connected when operating the ER 8 16 the DIO 24 DIO 32 or IN connector National Instruments is NOT liable for any damages resulting from any other connections e If you are daisy chaining the ER 8 16 or using the SC 205X Series cable adapter connect the 26 pin cable to the correct 26 pin connector either IN or OUT For additional information on signal connections and cabling refer to Chapter 3 Signal Connections Switch the 5 V power supply switch SW1 to the correct position either INT or EXT The switch position depends on the number of channels and the type of DAQ device you are using with the ER 8 16 Set the switch to INT if you are using your DAQ device s internal 5 V supply Set the switch to EXT if you are using an external 5 supply For additional information on power supply connections refer to the Power Supply section in Chapter 3 Signal Connections Note By default your ER 8 16 is shipped with SW1 set to the EXT position Verify the connections and setup Turn on the external power supply if necessary then turn on your computer The red Power LED should light up indicating that the ER 8 16 is receiving power If the red Power LED does not light up verify that the power supply connections and electrical power supply are switched ON If the connections and external power supply
31. O gel O00c SWI 000000000 3 DI o o SO o o olo olo olo olo olo olo olo olo olo olo olo o O o ULN2803 e a T to g 00000000 EXTGND OO good O o0000poogo oogodooolH ocooaoooogol o I 38880000 ER 4 Od 00000000L000O joo OOOOOOOOOODOODOOOO OOOOOOOOOODOO DOoooo 0000000000 OH 0000 ee pa D 9 o 0000 0000 0000 0000 0000 0000000 QO O gt 1 Power LED 4 Channel 1 Relay J8 EXT power supply conn 10 J2 26 pin IN conn 2 SW1 power supply switch 5 Screw Terminals J3 26 pin OUT conn 11 J1 DIO 24 and 3 Channel 1 LED 6 Surge Protector Pads 9 Fuses DIO 32 conn Figure 2 1 ER 8 16 Parts Locator Diagram ER 8 16 User Manual 2 2 National Instruments Corporation Chapter 2 Setup Table 2 1 Parts Locator Diagram Descriptions Callout Name Description 1 Power LED When illuminated red this LED indicates that the ER 8 16 is receiving power This is the main 5 V power supply switch for selecting external or internal supply Move the switch to EXT if using external supply and to INT if using internal driving device or ER 16 supply By default your ER 8 16 is shipped with SW1 in the EXT position Channel 1 LED Thes
32. a D 1 Appendix E Customer Communication sese E 1 MOSS AY oes Cebepita fee taedia etd teas feit aces nas Cdi ess bo aaa T Metti Glossary 1 Index oto emat otto A E CD e EE Index 1 ER 8 16 User Manual vi National Instruments Corporation Figure 2 1 Figure 2 2 Figure 3 1 Figure 3 2 Figure 3 3 Figure 3 4 Figure 4 1 Figure 4 2 Figure B 1 Figure B 2 Figure B 3 Table 2 1 Table 3 1 Table 3 2 Table B 1 Table B 2 Table B 3 Table B 4 O National Instruments Corporation vii Contents Figures ER 8 T6 Parts Locator DIGEIQIHI ese ad 2 2 The ER 5 16 Front Connector roo eerste teeta ab code aor aesti edens 2 7 Contact Protection Using a Flyback Diode for DC Loads 3 5 Arc Suppressor Pad Locations for Channel 1 eene 3 6 ER 8 16 Configurations with DIO Devices eene 3 9 ER 8 16 Configurations with Multifunction DAQ Devices 3 10 ER 9 T16 Block Diagram deis 4 2 ER 8 16 Onboard Equivalent Circuit eese 4 3 The DIO 24 C OIOCIOE pitos B 1 The DIO 32 COME A E eed B 3 26 Pin Internal Connectors A cada id B 5 Tables Parts Locator Diagram Destripador UR dt eei 2 3 Arc Suppressor Placement COM to NO eese 3 5 Arc Suppressor Placement C OM to NC aiu toss ni orte ON eis 3 6 DIQ 24 Connector Pin Descriptions oes siste io
33. able 2 3 parts locator diagram 2 2 contact protection for inductive loads 3 4 to 3 6 arc suppressor pad locations for channel 1 figure 3 6 arc suppressor placement COM to NC figure 3 6 COM to NO figure 3 5 technical information C 1 using flyback diode for DC loads figure 3 5 customer communication xii E 1 D daisy chaining the ER 8 16 3 8 data acquisition devices connecting to ER 8 16 2 5 to 2 6 Index 1 ER 6 16 User Manual Index data acquisition system configuration ER 8 16 configuration with DIO devices figure 3 9 ER 8 16 configuration with multifunction DAQ boards figure 3 10 digital interface 4 3 DIO 24 connector pin assignments figure B 1 pin descriptions table B 2 DIO 24 devices connecting to ER 8 16 3 1 to 3 2 power supply note 3 3 DIO 32 boards connecting to ER 8 16 3 2 external power supply required note 3 3 DIO 32 connector pin assignments figure B 3 pin descriptions table B 4 documentation conventions used in manual x xi National Instruments documentation xi xii organization of manual ix E environment specifications A 2 equipment optional 1 2 ER 8 16 block diagram 4 2 features 1 1 getting started 1 1 optional equipment 1 2 software 1 2 unpacking 1 2 F fax technical support E 1 front connectors exceeding maximum ratings warning 3 1 for DIO 24 devices 3 1 to 3 2 for DIO 32 boards 3 2 ER 8 16 User Manual fuses desc
34. al I O devices such as the AT MIO 16E 2 AT MIO 64E 3 AT MIO 16E 10 AT MIO 16DE 10 AT MIO 16XE 50 NEC MIO 16E 4 and NEC AI 16XE 50 unless otherwise noted MIO board refers to National Instruments boards such as the AT MIO 16F 5 AT MIO 16D AT MIO 64F 5 AT MIO 16 and AT MIO 16X unless otherwise noted x National Instruments Corporation About this Manual DAQCard DAQCard refers to National Instruments cards such as the DAQCard 500 and DAQCard 700 unless otherwise noted 1200 Series 1200 Series refers to the National Instruments DAQPad 1200 and DAQCard 1200 unless otherwise noted NB NB refers to the NuBus Series computers NI DAQ NI DAQ is used in this manual to refer to the NI DAQ software for Macintosh and PC compatibles unless otherwise noted Macintosh Macintosh refers to all Macintosh II Macintosh Quadra and Macintosh Centris computers except the Centris 610 unless otherwise noted PC PC refers to PC XT AT and IBM PS 2 models 25 and 30 computers Port A Port A is used in this manual to refer to port A or port O as in your NI DAQ manuals Port B Port B is used in this manual to refer to port B or port 1 as in your NI DAQ manuals Port C Port C is used in this manual to refer to port C or port 2 as in your NI DAQ manuals Port D Port D is used in this manual to refer to port D or port 3 as in your NI DAQ manuals Abbreviations acronyms metric prefixes mnemonics symbols and terms are listed in
35. al connector table B 5 B 6 DIO 24 connector table B 2 26 pin internal connectors pin assignments figure B 5 pin descriptions table B 5 to B 6 C channel 1 LED description table 2 3 parts locator diagram 2 2 channel 1 relay description table 2 3 parts locator diagram 2 2 channel connections 3 3 to 3 6 channel isolation 3 4 contact protection for inductive loads 3 4 to 3 6 arc suppressor pad locations for channel 1 figure 3 6 arc suppressor placement COM to NC figure 3 6 COM to NO figure 3 5 using flyback diode for DC loads figure 3 5 power up conditions 3 4 wire gauge 3 4 channel isolation 3 4 channel rating specifications A 1 configuration See data acquisition system configuration setup connecting ER 8 16 to DAQ devices ER 8 16 front connector figure 2 7 procedural steps 2 5 to 2 6 connectors ER 8 16 front connector figure 2 7 National Instruments Corporation front connectors exceeding maximum ratings warning 3 1 for DIO 24 devices 3 1 to 3 2 for DIO 32 boards 3 2 internal connectors 3 7 to 3 8 daisy chaining the ER 8 16 3 8 T O connectors 26 pin internal connectors B 5 to B 6 DIO 24 connector B 1 to B 2 DIO 32 connector B 3 to B 4 J1 connector description table 2 3 parts locator diagram 2 2 J2 connector description table 2 3 parts locator diagram 2 2 J3 connector description table 2 3 parts locator diagram 2 2 J8 connector description t
36. are qualified to do so Before removing the cover make sure that the computer and the power supply are turned off and that the signal wires connected to the screw terminals do not contain live voltages The internal connectors expand the switching system to 24 or 32 channels with the minimum number of cables or accessories Use the IN connector to interface the ER 8 with the SC 205X Series cable adapters so you can interface your ER 8 to the Lab or MIO boards Warning If you are using the IN internal connector DO NOT connect a cable to any of the front connectors Connecting the cable to the wrong connector can damage the ER 8 16 or your DAQ device National Instruments is NOT liable for any damages resulting from such connections National Instruments Corporation 3 7 ER 8 16 User Manual Signal Connections Chapter 3 Daisy Chaining the ER 8 16 To expand your system from 16 channels to 24 channels connect a 26 pin NB7 ribbon cable from the ER 16 OUT connector to the ER 8 IN connector Note DO NOT connect an external supply to the ER 8 the receiving unit Verify that SWI is in the INT position on the receiving unit Connect the external supply to the sending unit The power supply will also be daisy chained through the NB7 cable to the expanded system To expand your system from 16 channels to 32 channels connect a 26 pin NB7 ribbon cable from one ER 16 OUT connector to the other ER 16 IN connector Note DO NOT connect an
37. d anno High Sensitive Type environmental conditons and expected reliability levels MSAFETY STANDARD amp FILE NUMBERS UL 508 File No E56140 C22 2 No 14 File No VDE 0435 Please be noted that UL CSA ratings may differ from the stan dard ratings 128 LR35579 National Instruments Corporation eSurge Strength sss eTemperature Range at nominal voltage e Time Value sss at normal voltage e Vibration Resistance Misoperatior Endurance Shock Resistance Miscperaticn Engurance e Unit Mass Enc OSUFe sss Nominal Relay type coil voltage Standard Type 1 000VAC 1 minute between open contacts 2 000VAC 1 minute between coil and contacts 4000V High Voltage Type 6000V at 1 2 x 50ys standard surge wave Standard Type 40 to 85 C High Sensitive Type 40 to 90 C Operate Max 10ms Release Max 5ms 10 to 55 Hz double amplitude of 3 3mm 10 to 55 Hz double amplitude of 3 3mm 100 m s 11 1 ms 500 m s 6 1 ms Approx 8g Polybutylene Terephthalate PBT Contact ratings 5 to 48VDC Normally open 1 114PH 125VAC 250VAC 5A 30VDC 250VAC Resistive Normally close 1 14HP 125VAC 250VAC 3A 30VDC 250VAC Resistive 5 to 48VDC 1 12HP 125VAC 250VAC 5A 30VDC 250VAC Resistive VE H5 VE HMS 5 to 4BVDC 1 i i D 3 i Normally open 1 10HP 125VAC 250VAC 5A 30VDC 250VAC Resi
38. e COM contact of a channel to the NC contact of that channel 2 4 6 8 10 12 14 16 18 20 22 24 36 38 40 42 44 46 48 50 Not connected 49 5 V supply This pin is connected to the internal 5 V signal on the ER 8 16 26 28 30 32 34 ER 8 16 User Manual Ground These pins are connected to the internal ground on the ER 8 16 B 2 O National Instruments Corporation Appendix B I O Connectors DIO 32 Connector Figure B 2 The DIO 32 Connector National Instruments Corporation B 3 ER 8 16 User Manual I O Connectors 6 5 8 2 3 7 1 4 Appendix B Table B 2 DIO 32 Connector Pin Descriptions Signal Name PD lt 7 0 gt Description Port D Channels 7 through O These signals are routed back to the 26 pin OUT connector for daisy chaining to another ER 8 or ER 16 Each of these pins controls the relay channel of the daisy chained ER 8 or ER 16 A digital high on these pins connects the COM contact of a channel to the NO contact of that channel A digital low on these pins connects the COM contact of a channel to the NC contact of that channel 10 15 9 16 11 13 12 14 PC lt 7 0 gt Port C Channels 7 through 0 These signals are routed back to the 26 pin OUT connector for daisy chaining to another ER 8 or ER 16 Each of these pins controls the relay channel of the daisy
39. e DAQ device Maximum input ratings for each signal are given in Appendix A Specifications National Instruments is NOT liable for any damages resulting from signal connections that exceed any of these ratings Turn off the host computer power before making any connections Warning Keep away from live circuits DO NOT REMOVE THE TOP COVER of the ER 8 16 when it is operating or is powered on If signal wires are connected to the unit dangerous voltages may exist even when the equipment is turned off To avoid dangerous electrical shock do not perform procedures involving cover removal unless you are qualified to do so Before removing the cover make sure that the computer and the power supply are turned off and that the signal wires connected to the screw terminals do not contain live voltages O National Instruments Corporation 2 5 ER 8 16 User Manual Setup Chapter 2 Remove the top cover of your ER 8 16 by removing the four screws located on the bottom of your unit Connect the 50 pin interfacing cable to the appropriate 50 pin connector located on the front end of the ER 8 16 as shown in Figure 2 2 e If you are connecting a DIO 24 device to the ER 8 16 use the DIO 24 50 pin connector This is the bottom connector e If you are connecting a DIO 32 board to the ER 8 16 use the DIO 32 50 pin connector This is the top connector Warning Connecting the cable to the wrong connector can damage the ER 8 16 or your DAQ device
40. e DS lt 1 16 gt LEDs are illuminated green when the NO contact is shorted to the COM contact for the respective channel Otherwise the LED is shut off Channel Relay These K lt 1 16 gt relays are controlled digitally on the ER 8 16 Screw Terminals The NC lt 1 16 gt screw terminals are for the NC contact for channels through 16 The NO 1 16 screw terminals are for the NO contact for channels through 16 The COM lt 1 16 gt screw terminals are for the COM contact for the channels 1 through 16 Surge Protector Pads The M lt 1 16 gt pads across NC and COM contacts are for protecting the relay contacts from inductive loads A resistor and capacitor combination can be placed across these pads to suppress sparking on the relay contacts due to inductive loads The N 1 16 pads across NO and COM contacts are for protecting the relay contacts from inductive loads A resistor and capacitor combination can be placed across these pads to suppress sparking on the relay contacts due to inductive loads This external power supply connector EXT 5 V is for external 5 V supply EXT GND is the reference for the external 5 V supply and is connected to the ER 8 16 ground 8 J3 This 26 pin OUT connector sends the 26 pin daisy chain cable to the ER 8 or the ER 16 9 F1 and F2 are socketed power supply fuses You may replace these fuses if they are blown The fuse is LIT PICOIIL 2 A 125 V fast This 26 pin IN connector
41. e the ER 8 16 or your DAQ device National Instruments is NOT liable for any damages resulting from such connections You can control a maximum of 32 channels using the DIO 32 connector and two ER 16s Daisy chain one ER 16 to the other ER 16 using the NB7 cable The ER 16 uses port A lt 0 7 gt to control channels 1 through 8 and port B lt 0 7 gt to control channels 9 through 16 Port C lt 0 7 gt and port D 0 7 wrap back to the 26 pin OUT connector For additional information on daisy chaining refer to the Daisy Chaining the ER 8 16 section later in this chapter Power Supply You can use either your DAQ device s internal 5 V supply or an external 5 V supply to power up your ER 8 16 If you use an external 5 V supply use the two screw terminals to connect external 5 V and GND Refer to Figure 2 1 in Chapter 2 Setup for the location of this screw terminal on the ER 8 16 Warning Connections that exceed any of the input signal maximum ratings on the ER 8 16 can damage the ER 8 16 your computer and the DAQ device Maximum input ratings for each signal are given in Appendix A Specifications National Instruments is NOT liable for any damages resulting from signal connections that exceed any of these ratings ER 8 16 User Manual 3 2 National Instruments Corporation Chapter 3 Signal Connections Current requirements for the ER 8 16 are as follows Current Amps 8 16 24 32 If you use its internal 5 V supp
42. ecember 1996 Part Number 371197A 01 Please comment on the completeness clarity and organization of the manual If you find errors in the manual please record the page numbers and describe the errors Thank you for your help Name Title Company Address Phone Mail to Technical Publications Fax to Technical Publications National Instruments Corporation National Instruments Corporation 6504 Bridge Point Parkway 512 794 5678 Austin TX 78730 5039 Glossary AC AWG cm COM DAQ DC EXT GND Hz in INT VO LED MB MOV NB NC NO PA PB PC PCMCIA degrees ohms percent amperes alternating current American Wire Gauge Celsius centimeters common data acquisition direct current external ground hertz inches internal input output light emitting diode megabytes of memory metal oxide varistor NuBus Series computers normally closed normally open port A pin port B pin port C pin personal computer memory card association O National Instruments Corporation Glossary 1 ER 8 16 User Manual Glossary PD port D pin PWB printed wire board RAM random access memory S seconds SPDT single pole double throw V volts VAC volts alternating current VDC volts direct current Vrms volts root mean square ER 8 16 User Manual Glossary 2 National Instruments Corporation Index Numbers 5 V signal 26 pin intern
43. ering develops on one side either the N O side contacts or the N C side contacts the flip flop does not reverse and the counter circuit can be fed pulsed without a miss However bouncing from the N O side to N C side must be absolutely avoided Fig 10 E Notes 1 The A B and C lines should be made as short as possible 2 It is necessary that there be no noise from the coil section induced into the contact section Binary i Counter Fig 10 Triac drive With an electronic circuit using a direct drive from a triac the electronic circuit will not be isolated from the power Circuit and because of this troubles due to erroneous operation and damage can develop easily The introduction of a relay drive is the most economical and most effective solution Photo coupler and pulse transformer circuits are complicated When a zero cross switching characteris ER 8 16 User Manual tic is necessary a solid state relay SSR should be used Fig 11 le t C6 National Instruments Corporation Appendix D Takamisawa VE Series Relay Technical Data This appendix contains a manufacturer data sheet for the relays used on the ER 8 16 Copyright Farnell Electronics Inc 1995 Reprinted with permission of copyright owner All rights reserved Farnell Electronics Inc Farnell Relay Products Takamisawa Relay amp SSR General Catalog 95 96 National
44. evision Configuration National Instruments software product Version Configuration The problem is List any error messages The following steps will reproduce the problem ER 8 16 Hardware Configuration Form Record the settings and revisions of your hardware on the line to the right of each item Complete a new copy of this form each time you revise your software or hardware configuration and use this form as a reference for your current configuration Completing this form accurately before contacting National Instruments for technical support helps our applications engineers answer your questions more efficiently National Instruments Products e SW1 Switch Position INT or EXT Power INT or EXT e Connector DIO 24 DIO 32 or IN e Daisy Chained Yes or No e SC 205X Series Cable Adapter Yes or No e PC Plug in Card or DAQCard Other Products e Computer Make and Model e Amount of Memory e Type of Video Board Installed e System and Finder Versions e Programming Language e Programming Language Version e Other Boards in System e Slots base I O addresses of Other Boards Documentation Comment Form National Instruments encourages you to comment on the documentation supplied with our products This information helps us provide quality products to meet your needs Title ER 8 16 User Manual Edition Date D
45. g maximum ratings warning 3 2 requirements for ER 8 16 3 3 setting up 3 2 to 3 3 specifications A 1 power supply switch SW 1 description table 2 3 parts locator diagram 2 2 power up conditions 3 4 R relay channels channel 1 relay description table 2 3 parts locator diagram 2 2 ER 8 16 onboard equivalent circuit figure 4 3 Takamisawa VE series relay technical data D 1 theory of operation 4 3 National Instruments Corporation Index 3 Index S safety information for ER 8 16 2 4 SC 205X series using with ER 8 16 3 8 screw terminals description table 2 3 parts locator diagram 2 2 setup 2 1 to 2 7 connecting ER 8 16 to DAQ device 2 5 to 2 6 ER 8 16 front connector figure 2 7 overview 2 1 parts locator diagram 2 2 description table 2 3 safety information 2 4 signal connections channel connections 3 3 to 3 6 channel isolation 3 4 contact protection for inductive loads 3 4 to 3 6 power up conditions 3 4 wire gauge 3 4 connecting signal lines 3 6 to 3 7 DAQ system configuration with ER 8 16 3 9 to 3 10 front connectors 3 1 to 3 2 exceeding maximum ratings warning 3 1 for DIO 24 devices 3 1 to 3 2 for DIO 32 boards 3 2 internal connectors 3 7 to 3 8 26 pin internal connectors B 5 to B 6 daisy chaining the ER 8 16 3 8 warnings 3 7 VO connectors 26 pin internal connectors B 5 to B 6 DIO 24 connector B 1 to B 2 DIO 32 connector B 3 to B 4 power supply 3 2
46. ge can damage several components on the ER 8 16 To avoid such damage in handling the unit take the following precautions Ground yourself via a grounding strap or by holding a grounded object e Touch the antistatic package to a metal part of your computer chassis before removing the ER 8 16 from the package Remove the unit from the package and inspect it for loose components or any other sign of damage Notify National Instruments if the ER 8 16 appears damaged in any way Do not install a damaged unit e Never touch the exposed pins of connectors ER 8 16 User Manual 1 2 National Instruments Corporation Chapter 2 Setup This chapter describes how to set up the ER 8 16 The ER 8 has eight SPDT relays controlled by eight digital lines Each of these relays has a normally closed NC contact that connects to the common COM contact when the corresponding digital output line is low and a normally open NO contact that connects to the COM contact when the digital line is high The contacts are break before make so that all three contacts are never shorted The ER 8 16 is an accessory to National Instruments DAQ devices with digital I O No hardware or software configuration is necessary To configure the DAQ device driving the ER 8 16 refer to your DAQ hardware user manual Figure 2 1 shows the parts locator diagram for the ER 8 16 See Table 2 1 for detailed descriptions of the parts called out on the parts locator diagram
47. ion refer to the Channel Connections section in Chapter 3 Signal Connections When you have connected the wires check the connections again 10 Replace the top cover and screw it on tightly 11 Turn on your computer and the external power supply Your ER 8 16 is now ready for operation Figure 2 2 The ER 8 16 Front Connector National Instruments Corporation 2 7 ER 8 16 User Manual Chapter 3 Signal Connections This chapter describes the signal connections channel connections and digital interface to the ER 8 16 Front Connectors This section describes the signal connections to the ER 8 16 via the I O connectors for the digital interface Warning Connections that exceed any of the maximum ratings of the input signals on the ER 8 16 can damage the ER 8 16 your computer and the DAQ device Maximum input ratings for each signal are given in Appendix A Specifications National Instruments is NOT liable for any damages resulting from signal connections that exceed any of these ratings Turn off signal sources before connecting or disconnecting any additional signal DO NOT attempt to connect your ER 8 16 to any connector for which it is not designed Incorrect connection can damage your ER 8 16 or the host computer National Instruments is NOT liable for any damages resulting from incorrect connections The front end of the ER 8 16 has two 50 pin connectors The top connector DIO 32 is for interfacing to DIO 3
48. ions DAQ System Configurations with the ER 8 16 The following figures show the possible DAQ system configurations using the ER 8 16 for multichannel control PortA Port A Port B DIO 24 Boards Cable t DIO 24 Boards Cable 1 ona Por or AT MIO 16D o er or AT MIO 16D Ll ER 16 AT MIO 16DE 10 AT MIO 16DE 10 3 a 8 Channel Relay Control b 16 Channel Relay Control PortA Port B Port A Port B DIO 24 Boards Cable i NB1 Cabl or AT MIO 16D Sape AT MIO 16DE 10 2 9 OUT OUT NB7 Cable Port C NB7 Cable Port C Port D c 24 Channel Relay Control d 32 Channel Relay Control Port AA Port AB NB1 Cable NB1 Cabl Port AA Port AB 2 ape OUT ER 16 NB7 Cable Port AC 2 NB7 case S In ER 8 ER 8 SC 2054 Port BA Port BB INL J DIO 96 48 Channel NB1 Cable Port BA Port BB Boards DIO 96 Sc 2054 NB1 Cable f D SC 2054 EE d Boards 48 Channel ER 48 C hannel so OUT NB7 cae ov Port BC ER 8 IN NB1 Cable e 48 Channel Relay Control NB7 Cable Port 24 NB1 Cable 1 Cable Options DAQCard DIO 24 PSH27 50F D1 cable OU PC DIO 24 NB DIO 24 NB 1 cable NB7 Cable AT MIO 16D Type NB5 cable pin 51 100 AT MIO 16DE 10 R1005050 ribbon cable pin 51 100 IN 2 External supply should be connected to the ER 16 3 External supply needed for PCMCIA DAQCards f 96 Channel Relay Control Figure
49. ischarge current flows from C when the contacts close Although extremely effective in arc suppression as the Contacts open the contacts are susceptible to welding since charging current flows to C when the contacts close Mounting the Protective Device In the actual circuit it is necessary to locate the protective device diode resistor Capacitor varistor etc in the immediate vicinity of the load or contact If located too far away the effectiveness of the protective device may diminish As a guide the distance should be within 50cm e Abnormal Corrosion During High Frequency Switching of DC Loads spark generation If for example a DC valve or clutch is switched at a high frequency a blue green corrosion may develop This occurs from the reaction with nitrogen in the air when sparks arc discharge are generated during switching For relays with a case the case must be removed or air holes drilled in the case A similar phenomenon occurs in the presence of ammonia based gas Therefore care is required in circuits where sparks are generated at a high frequency e Type of Load and Inrush Current The type of load and its inrush current characteristics together with the switching frequency are important factors which cause contact welding Particularly for loads with inrush currents measure the steady state current and inrush current and select a relay which provides an ample margin of safety The
50. lops a sulfide film in a sulfide atmosphere i silver nickel AgW sitver tungsten Hardness and melting point are high arc resistance is excellent and it is highly resistant to material transfer However high contact pressure is required Furthermore contact resistance is relatively high and resistance to corrosion is poor Also there are constraints on processing and mounting to contact springs AgNi Equals the electrical conductivity of silver Excellent arc resistance AgPd silver palladium At standard temperature good corrosion resistance and good sulfidation resistance However in dry circuits organic gases adhere and it easily develops a polymer Gold clad is used to prevent polymer buildup Expensive PGS alloy platinum gold silver Excellent corrosion resistance Mainly used for low current circuits Au Ag Pt 69 25 6 Combines perfect corrosion resistance and hardness As plated contacts used for relatively light loads pili in an organic gas atmosphere care is required as polymers may develop Therefore it is used in hermetic seal relays reed relays etc Expensive i Au with its excellent corrosion resistance is pressure welded onto a base metal Special characteristics i Au clad are uniform thickness and the nonexistence of pinholes Greatly effective especially for low level loads Surface gold clad under relatively adverse atmospheres Often difficu
51. lt into your ER 8 16 can become impaired if it is damaged in any way If necessary return the unit to National Instruments for service and repair to ensure that safety is not compromised DO NOT SUBSTITUTE PARTS OR MODIFY EQUIPMENT To avoid introducing additional hazards do not install unauthorized parts or modify your ER 8 16 If necessary return the unit to National Instruments for service and repair to ensure that safety is not compromised When using the unit with high common mode voltages you must insulate your signal wires appropriately National Instruments is NOT liable for any damages or injuries resulting from inadequate signal wire insulation When connecting or disconnecting signal lines to the ER 8 16 screw terminal verify that the lines are powered off Potential differences between the lines and the ER 8 16 ground create a shock hazard while you connect the lines Connections including power signals to ground and vice versa that exceed any of the maximum signal ratings on the ER 8 16 can create a shock or a fire hazard or can damage any or all of the devices connected to the ER 8 16 the host computer and the ER 8 16 National Instruments is NOT liable for any damages or injuries resulting from incorrect signal connections ER 8 16 User Manual 2 4 O National Instruments Corporation Chapter 2 Setup Use and connect to only one of the following connectors when operating the ER 8 16 the DIO 24 DIO 32 or IN connect
52. lt to implement clad contacts in existing relays due to Finish design and installation Au plating Similar effect to Au cladding Depending on the plating process used supervision is important as there gold plating is the possibility of pinnoles and cracks Relatively easy to implement gold plating in existing relays g g gota p g g y f Au flash plating gold thin film plating Purpose is to protect the contact base metal during storage of the switch or device with built in switch However a certain degree of contact stability can be obtained even when switching loads 3 Contact Protection e Counter EMF When switching inductive loads with a DC relay such as relay sequence circuits DC motors DC clutches and DC solenoids it is always important to absorb surges e g with a diode to protect the contacts When these inductive loads are switched off a counter emf of several hundred to several thousand voits develops which can severely damage contacts and greatly shorten life If the current in these loads is relatively small at around 1A or less the counter emf will cause the ignition of a glow or arc discharge The discharge decomposes organic matter contained in the air and causes black deposits oxides carbides to develop on the contacts This may result in contact failure ON OFF E OT V Several hundred to several j thousand volts E e m a p Fig 13 Example of counter emf a
53. ly setting make sure your device can supply the required amount of 5 V power to the ER 8 16 Note DIO 32F boards do not provide internal 5 V supply You will need an external 5 V supply for DIO 32F boards DAQCard DIO 24 and other DAQCards can provide a maximum of 500 mA of current You can drive only one ER 8 with the internal supply You will need an external 5 V supply for driving more than eight channels In addition to the above note refer to Figures 3 3 and 3 4 for information on configurations that require an external 5 V supply When you connect more than one ER 8 with any of the SC 205X Series cable adapters you will need an external 5 V power supply Warning Connecting the cable to the wrong connector can damage the ER 8 16 or your DAQ device National Instruments is NOT liable for any damages resulting from such connections Use and connect only one of the following connectors when operating the ER 8 16 the DIO 24 DIO 32 or IN connector National Instruments is NOT liable for any damages resulting from incorrect connections If you use your DAQ device s internal 5 V supply make sure that the power supply switch SW1 is set to the INT position If you are using an external 5 V supply make sure that SW1 1s set to the EXT position Refer to Figure 2 1 for the location of the SW1 switch Note By default your ER 8 16 is shipped with SW1 set to the EXT position Channel Connections The ER 8 16 has 26 screw
54. nals are for daisy chaining to another ER 8 or ER 16 Each of these pins controls the relay channel of the daisy chained ER 8 or ER 16 A digital high on these pins connects the COM contact of a channel to the NO contact of that channel A digital low on these pins connects the COM contact of a channel to the NC contact of that channel Appendix B PC lt 7 0 gt Port C Channels 7 through 0 These signals are for daisy chaining to another ER 8 or ER 16 Each of these pins controls the relay channel of the daisy chained ER 8 or ER 16 A digital high on these pins connects the COM contact of a channel to the NO contact of that channel A digital low on these pins connects the COM contact of a channel to the NC contact of that channel Ground These pins are connected to the ground on the ER 8 16 ER 6 16 User Manual 5 VDC supply These pins are connected to the 5 V supply on the ER 8 16 B 6 National Instruments Corporation Appendix C Contact Protection This appendix contains technical data on contact protection when you are switching inductive loads CONTACT The contacts are the most important elements of relay construction Contact performance conspicuously influenced by contact material and voltage and current values applied to the contacts in particular the voltage and current waveforms at the time of application and release the type of load frequency of switching ambient atmosphere
55. nd actual measurement on a peak hold meter In Fig 13 8 an emf e L S with a steep waveform is generated across the Coil with the polarity shown in Fig 13 b at the instant the inductive load is Switched off The counter emf passes through the power supply line and reaches both contacts Generally the critical dielectric break down voltage at standard temperature and pressure in air is about 200 to 300 volts Therefore if the counter emf exceeds this discharge occurs at the contacts to dissipate the energy eL i stored in the coil For this reason it is desirable to absorb the counter emf so that it is 200V or less A memory oscilloscope digital memory peak hold meter etc can be used to measure the counter emf However since the waveform is extremely steep considerable discrepancies may result depending on the precision of the equipment used The table shows the counter emf of various relays measured on a high precision peak hold meter Actual measurement of counter emf on a peak hold meter Relay Type Nominal Coil Voltage y pg 12V DC 24V DC R relay single side stable LASN 165 E NF4 relay 410V 470V 510V Material Transfer Phenomenon Material transfer of contacts occurs when one contact melts or boils and the contact material transfers to the other contact As the number of switching operations increases uneven contact surfaces develop such as those
56. o eun tape otra oen epe B 2 DIO 32 Connector Pin Descriptions essen enne enne B 4 26 Pin IN Connector Pin DescriptiOMS oococonocccnoncccnnncncnnnccononacononanonanacnnnnccnnnnnss B 5 26 Pin OUT Connector Pin Descriptions eese B 6 ER 6 16 User Manual About This Manual This manual describes the electrical and mechanical aspects of the ER 8 and ER 16 and contains information concerning their setup operation and safety Both the ER 8 and ER 16 are single pole double throw SPDT relay accessories for use with other data acquisition DAQ products The ER 8 has eight channels the ER 16 has 16 channels Throughout this manual ER 8 16 refers to either the ER 8 or ER 16 unless otherwise noted The ER 8 16 interfaces to any National Instruments DAQ device with digital I O capabilities for the Macintosh and PC XT AT AT Series Lab computers More specifically the National Instruments product families that interface with the ER 8 16 are the DIO 24 DIO 32 Lab E Series MIO DAQCards and 1200 Series devices This accessory is designed for low cost control applications in laboratory testing production testing and industrial process monitoring and control Organization of This Manual The ER 8 16 User Manual is organized as follows e Chapter 1 Introduction describes the ER 8 16 lists what you need to get started and optional equipment describes software support and explains how to unpack the ER 8 1
57. omaci Resistarceims t Electrical Life Test 539 200 100 F 30 Operation Ma Sob Make Side 250VAC SAIR 20 FBreak Side 10 Fr OVAC BAR Contact Resistar atal 20 se Cpeateni a 2 d V Contact Resistance Contact CurrenttA ooo e Maximum Switching Power c 20 3C 405 100 200 300400500 Current Voltage wv Distribution of Operate amp Release Time 100 de bo Baye WE TENS r 50 g got E ZA Operate vE 12H5 lt n 50 8C EZA Maxe 20 0 I 20 30 40 50 Cortac Pessstarceim 2 Electr cal Life Test pag 200 32 Operater Tig 50 0 1 10 I 100 _250VAC Sins ger ita 5000 Life Curves VoltagelV Contact Resistance eriw o 240VAC Resist vel E HE reak IL 240VAC cos WE HT Break 0 1 2 203 05 2 34 5 Coniac Currents Distribution of Contact Resistance 30 ac 50 Contact Resis anceimi i t 500 a Face ir tiat 0 01 2 1 I 5 10 Operation 9 130 National Instruments Corporation ER 8 16 User Manual Takamisawa VE Series Relay Technical Data Appendix D VE Relay DIMENSIONS in mm E WIRING DIAGRAM DRILLING PLAN in mm BOTTOM
58. or National Instruments is NOT liable for any damages resulting from incorrect connections Equipment described in this document must be used in an Installation Category II environment per IEC 664 This category requires local level supply mains connected installation Do not operate this equipment in a manner that contradicts the information specified in this document Misuse of this equipment could result in a shock hazard Terminals are for use only with equipment that has no accessible live parts Use only 26 16 AWG wire with a voltage rating of 300 V and 60 C for controlling 250 V Prepare your signal wire by stripping the insulation no more than 7 mm Connect the signal wires to the screw terminals by inserting the stripped end of the wire fully into the terminals Tighten the terminals to a torque of 5 7 in lb Clean devices and terminal blocks by brushing off light dust with a soft nonmetallic brush Remove other contaminants with deionized water and a stiff nonmetallic brush The unit must be completely dry and free from contaminants before returning to service Connecting the ER 8 16 to Your DAQ Device The following are general instructions for setting up your ER 8 16 Consult your computer user manual or technical reference manual for specific instructions and warnings Warning 1 Connections that exceed any of the maximum rating of the input signals on the ER 8 16 can damage the ER 8 16 your computer and th
59. oration Appendix B I O Connectors This appendix contains the connector pinouts and pin descriptions for the ER 8 16 DIO 24 Connector Figure B 1 The DIO 24 Connector National Instruments Corporation B 1 ER 8 16 User Manual I O Connectors 1 3 5 759 11 13 15 Appendix B Table B 1 DIO 24 Connector Pin Descriptions Signal Name Description Port C Channels 7 through 0 These signals are routed back to the 26 pin OUT connector for daisy chaining to another ER 8 Each of these pins controls the relay channel of the daisy chained ER 8 A digital high on these pins connects the COM contact of a channel to the NO contact of that channel A digital low on these pins connects the COM contact of a channel to the NC contact of that channel 17 19 21 23 25 27 29 31 PB lt 7 0 gt Port B Channels 7 through 0 Each of these pins controls the relay channel A digital high on these pins connects the COM contact of a channel to the NO contact of that channel A digital low on these pins connects the COM contact of a channel to the NC contact of that channel 33 35 37 39 41 43 45 47 PA lt 7 0 gt Port A Channels 7 through 0 Each of these pins controls the relay channel A digital high on these pins connects the COM contact of a channel to the NO contact of that channel A digital low on these pins connects th
60. pen When a digital high signal is present on a channel the relay for that channel is energized the NO contact shorts to the COM contact and the NC contact is open A green LED just above each relay illuminates when the relay is energized To reduce the power consumption and to help extend relay life control the signals so that relays are energized for only short periods of time and only a minimal number of relays are energized Digital Line ULN 2803 High Current Driver Figure 4 2 ER 8 16 Onboard Equivalent Circuit National Instruments Corporation 4 3 ER 8 16 User Manual Appendix A Specifications This appendix lists the specifications for the ER 8 16 These specifications are typical at 25 C and 50 humidity unless otherwise noted Channel Rating Number of channels esee 8 channels for ER 8 16 channels for ER 16 Relay Dista emet e e ee OS dE ted SPDT 1 Form C nonlatching Max switching capacity resistive load ien 3 A at 250 VAC DC nuhi aaa 3 A at 30 VDC Max working voltage sees 250 Vrms channel to ground 250 Vrms channel to channel same phase Switching current nest tee eem eren 3 A max per channel 40 A max for ER 16 all channels 24 A max for ER 8 all channels Channel on resiStanCe occoncooonnncnonnnnnnnononnnnnnnnncnonanannnnconnnnnnoss 100 m Contactimatertal Guitarras Silver nickel alloy Life Mechanical inet
61. receives the 26 pin daisy chain cable from the ER 16 or SC 205X cable adapter This 50 pin dual connector has the top connector for DIO 32 boards and the bottom connector for DIO 24 devices National Instruments Corporation 2 3 ER 8 16 User Manual Setup Chapter 2 Safety Information The following warnings contain important safety information concerning hazardous voltages AM Warning Connections that exceed any of the maximum input signal ratings on the ER 8 16 can create a shock or a fire hazard or damage the ER 8 16 your computer and the DAQ device Maximum input ratings for each signal are given in Appendix A Specifications National Instruments is NOT liable for any damages resulting from signal connections that exceed any of these ratings Do not operate your ER 8 16 in an explosive atmosphere or where there may be flammable gases or fumes KEEP AWAY FROM LIVE CIRCUITS DO NOT REMOVE THE TOP COVER of the ER 8 16 when it is operating or is powered on If signal wires are connected to the unit dangerous voltages may exist even when the equipment is turned off To avoid dangerous electrical shock do not perform procedures involving cover removal unless you are qualified to do so Before removing the cover make sure that the computer and the power supply are turned off and that the signal wires connected to the screw terminals do not contain live voltages DO NOT OPERATE DAMAGED EQUIPMENT The safety protection features bui
62. ription table 2 3 parts locator diagram 2 2 replacing 2 6 G GND signal 26 pin internal connector table B 5 B 6 DIO 24 connector table B 2 DIO 32 connector table B 4 I inductive load protection against See contact protection for inductive loads internal connectors 3 7 to 3 8 26 pin internal connectors pin assignments figure B 5 pin descriptions table B 5 to B 6 daisy chaining the ER 8 16 3 8 I O connectors See also connectors 26 pin internal connectors pin assignments figure B 5 pin descriptions table B 5 to B 6 DIO 24 connector pin assignments figure B 1 pin descriptions table B 2 DIO 32 connector pin assignments figure B 3 pin descriptions table B 4 M manual See documentation O operation of ER 8 16 See theory of operation optional equipment 1 2 National Instruments Corporation P PA lt 7 0 gt signal 26 pin internal connector table B 5 DIO 24 connector table B 2 DIO 32 connector table B 4 PB lt 7 0 gt signal 26 pin internal connector table B 5 DIO 24 connector table B 2 DIO 32 connector table B 4 PC lt 7 0 gt signal 26 pin internal connector table B 6 DIO 24 connector table B 2 DIO 32 connector table B 4 PD lt 7 0 gt signal 26 pin internal connector table B 6 DIO 32 connector table B 4 physical specifications A 2 power LED description table 2 3 parts locator diagram 2 2 power supply 3 2 to 3 3 exceedin
63. rotection Circuit section of Appendix C Contact Protection for more information To determine the placement of each arc suppressor refer to Tables 3 1 and 3 2 which list the channel and suppressor pad assignments Inductive Load 7S Flyback Diode O Figure 3 1 Contact Protection Using a Flyback Diode for DC Loads Table 3 1 Arc Suppressor Placement COM to NO O National Instruments Corporation 3 5 ER 8 16 User Manual Signal Connections Chapter 3 Table 3 2 Arc Suppressor Placement COM to NC COM to NC Transient Voltage Suppressor Channel Number Reference Designator 1 2 3 4 5 6 7 8 9 Inductive Load COM1 Arc Suppressor Pads Figure 3 2 Arc Suppressor Pad Locations for Channel 1 Connecting Your Signal Lines To connect the signal wires to the screw terminals perform the following steps 1 Turn off your ER 8 16 Make sure the signal wires you are connecting to the screw terminals are also turned off and do not contain any live voltages Also make sure the host computer is turned off ER 8 16 User Manual 3 6 National Instruments Corporation Chapter 3 Warning Signal Connections KEEP AWAY FROM LIVE CIRCUITS DO NOT REMOVE THE TOP COVER of the ER 8 16 when it is operating or is powered on If signal wires are connected to the ER 8 16 dangerous voltages may exist even when the equipment is turned off To avoid dangero
64. s wants to receive your comments on our products and manuals We are interested in the applications you develop with our products and we want to help if you have problems with them To make it easy for you to contact us this manual contains comment and configuration forms for you to complete These forms are in Appendix E Customer Communication at the end of this manual ER 8 16 User Manual Xii National Instruments Corporation Chapter 1 Introduction This chapter describes the ER 8 16 lists what you need to get started and optional equipment describes software support and explains how to unpack the ER 8 16 About the ER 8 16 Thank you for buying the National Instruments ER 8 16 The ER 8 consists of eight isolated single pole double throw SPDT or form C relay channels The ER 16 consists of 16 isolated SPDT or form C relay channels The ER 8 16 can serve as a controller or switcher in laboratory testing production testing and industrial process monitoring and control applications The ER 8 16 operates with full functionality with most National Instruments digital I O products It also interfaces with the Lab and MIO boards using the SC 205X Series cable adapters The ER 8 16 has onboard screw terminals for easy wire attachment You can also build a 32 channel ER system by daisy chaining two ER 16s Detailed ER 8 16 specifications are in Appendix A Specifications What You Need to Get Started To set up and use your ER 8 16 yo
65. shown in Fig 14 After a while the uneven contacts lock as if they were welded together This often occurs in circuits where sparks are produced at the moment the contacts make such as when the DC current is large for DC inductive or capacitive loads or when the inrush current is large several amperes or several tens of amperes Contact protection circuits and contact materials resistant to material transfer such as AgW or AgCu are used as countermeasures Generally a concave formation appears on the cathode and a convex formation appears on the anode For DC capacitive loads several amperes to several tens of amperes it is always necessary to conduct actual confirmation tests E a gt p eene Material transfer of contacts Fig 14 32 ER 8 16 User Manual C2 National Instruments Corporation Appendix C Contact Protection General Application Guidelines e Contact Protection Circuit Use of contact protective devices or protection circuits can suppress the counter emf to a low level However note that incorrect use will result in an adverse effect Typical contact protection circuits are given in the table below Good x No Good Application Circuit ESA Features Others Device Selection If the load is a timer leakage current flows i Contact through the CR circuit causing faulty operation ae e ES E If used with AC vol
66. stive Normally close 1 14HP 125VAC 250VAC 5A 30VDC 250VAC Resistive ER 8 16 User Manual Takamisawa VE Series Relay Technical Data Appendix D VE Relay E ORDERING INFORMATION Nominal Voltage VE 12HMSE K HV Type HERE i Contact Rating H Heavy Duty Type Contact Arrangement Nil 1 Form C SPDT M 1 Form A SPST NO B COIL DATA CHART VD Ms VD UL CSA VDE Approved Type Surge Strength Nil Standard Type 4000V HV High Voltage Type 6000V Enclosure K Washable Type Contact Material Nil Gold Overlay Silver Nickel E Silver Nickel 5 Stiver Cadmium Oxide Alloy Coil Sensitivity Nil Standard Type S High Sensitive Type Note 1 Actual marking omits the hyphen of k VEX HM VEX HME VE H VE4 HE 4 ORDERING CODE VE4 HMS VE4 JH5 Coil Nominal Coil Resistance Must Operate Must Release Coil Nominal Voltage 2 10 Voltage Voltage f Power VD at 20 C V DC at 20 C V DC at 20 C mW at 20 C VE SH M E K VE SHM K 5 69 3 5 0 25 360 amp VE GH MXE K VE 6H M 5 K 6 100 4 2 0 3 360 i VE SH MXE K VE 9H M 5 K 9 225 6 3 0 45 360 E VE 12H MXE K VE 12H M 5 K 12 400 l 8 4 0 6 1360 E VE 18H M E K VEA8H M K 18 900 12 6 0 9 360 VE 24H MXE K VE 24H M K 24 1 600 16 8 12 360 VE 48H M E K VE 48H M 5 K 48 6 400 33 6 2
67. t Load 7 Capacitive Load i i 5 to 10 times i i 10 to 20 times i i 3 to 10 times i i 20 to 40 times MOOG A prt callas e 0 2 to 0 5 second 1 to 2 cycles Conditions become harsher if ptugging 1 60 to 1 30 seconds or inching is performed since state transitions are repeated EA e When Using Long Wires M B Equivalent circuit if long wires 100 to 300m are to be used T in a relay contact circuit inrush current may become a problem due to the stray Contacts capacitance existing between wires E Add a resistor approx 10 to 500 in Aaded resistor wire aay eens series with the contacts Fig 16 100 to 300m Um Fig 16 e Phase Synchronization in Switching AC Loads 1 2 to 2 cycles 1 120 to 1 30 seconds If switching of the relay contacts is synchronized with the phase of the AC power reduced electrical life welded contacts or a locking phenomenon incomplete release due to contact material transfer may occur Therefore check the relay while it is operating in the actual system However if problems develop control the relay using an appropriate phase Fig 17 4 Cautions on Use Related to Contacts e Connection of load and contacts Connect the load to one side of the power supply as shown in Fig 18 a Connect the contacts to the other side This prevents high voltages from developing between contacts
68. tage be sure the impedance of the ee i zu ES o load is sufficiently smaller than that of the CR circuit AS a guide in selecting r and c r c tr 0 5 to 10 per 1V contact voltage log i 0 5 to 1uF per 1A contact current i i Values vary depending on the properties of the i j j i load and variations in relay characteristics CR circuit T If the load is a relay or solenoid the Capacitor c acts to suppress the discharge the Contact release time iengthens Effective when moment the contacts open Resistor r acts to j E connected to both contacts if the power limit the current when the power is turned onthe fa i i 5 supply voltage is 24 or 48V and the voltage next time Test to confirm Use a capacitor with ES 2 across the load is 100 to 200V a breakdown voltage of 200 to 300V Use AC C T cu 3 type capacitors non polarized for AC circuits i T E i Contact The diode connected in parallel causes the i Use a diode with a reverse breakdown voltage at o 875 i energy stored in the coil to flow to the coil in least 10 times the circuit voltage and a forward Diode circuit d e S o the form of current and dissipates it as joule current at least as large as the load current L Diode 2 heat at the resistance component of the In electronic circuits where the circuit voltages E i E inductive load This circuit further delays the are not so high a diode can be used with a mm 2 release time compared
69. terminals Twenty four of these screw terminals are for connecting the loads to the relay channels and two screw terminals are for providing the external 5 V supply to the unit Each channel consists of a COM position an NC position and an NO position O National Instruments Corporation 3 3 ER 8 16 User Manual Signal Connections Chapter 3 Power up Conditions When the digital interface cable is not connected to either connector the COM contact is connected to the relay NC contact at power up When the digital interface cable is connected to any of the connectors the power up state depends on the power up state of the digital signals on the DAQ device If the power up state of the digital lines driving the ER 8 16 is low the COM contact is connected to the relay NC contact If the power up state of the digital lines driving the ER 8 16 is high the COM contact is connected to the relay NO contact Wire Gauge When using the ER 8 you can use up to 16 AWG gauge wire for all channels If you are using the ER 16 and all channels are in use use 18 AWG gauge wire maximum Warning When using the ER 8 16 with high voltages you must insulate your signal wires appropriately National Instruments is NOT liable for any damages or injuries resulting from inadequate signal wire insulation Make sure that your wires are properly insulated to avoid any short circuit to the other channels ground or any other point on the printed wire board PWB
70. tive load but there is a broad meaning indicated for that class of relay and ordinarily it is proper to think of current capacity as that for 125V AC Circuits Current The current at both the closing and opening time of the contact circuit exerts an important influence For example when the load is either a motor or a lamp to the extent of the inrush current at the time of closing the circuit wear of the contacts and the amount of contact transfer increase and contact welding and contact transfer make contact separation impossible Copyright Aromat Corporation 1993 Reprinted with permission of copyright owner All rights reserved Aromat Corporation Relay Technical Data Book National Instruments Corporation Cl ER 8 16 User Manual Contact Protection General Application Guidelines Appendix C 2 Characteristics of Common Contact Materials Characteristics of contact materials are given below Refer to them when selecting a relay Contact Materia Electrical conductivity and thermal conductivity are the highest of all metals Exhibits low contact PA UE resistance is inexpensive and widely used A disadvantage is it easily develops a sulfide film in a sulfide atmosphere Care is required at low voltage and low current levels AgCd Exhibits the conductivity and low contact resistance of silver as well as excellent resistance to welding silver cadmium Like silver it easily deve
71. u will need the following L ER S or ER 16 ER 8 16 User Manual LJ Your DIO 24 DIO 32 Lab E Series MIO DAQCard or 1200 Series device and documentation SC 205X Series cable adapter if you are using a Lab or MIO board Interface cable different for DIO 24 and DIO 32 devices DAQCards and SC 205X Series adapters LJ Your computer National Instruments Corporation 1 1 ER 8 16 User Manual Introduction Chapter 1 Optional Equipment You can use the following National Instruments products with your ER 8 16 Any National Instruments DAQ device with digital I O capability SC 2050 cable adapter with NB1 cable SC 2051 cable adapter with NB1 cable SC 2052 cable adapter with NB1 cable SC 2053 cable adapter with NB1 cable SC 2054 48 channel kit with NB5 cable SC 2054 96 channel kit with NB5 cable SC 2055 cable adapter with NB1 cable NB7 cable assembly SH6850 shielded cable R6850 ribbon cable R1005050 ribbon cable Type NB3 cable For more information about optional equipment available from National Instruments refer to your National Instruments catalog or call the office nearest you Refer to Chapter 3 Signal Connections for additional information on cabling connectors and adapters Software The ER 8 16 requires no additional software beyond what you are using for your DAQ device Unpacking Your ER 8 16 is shipped in an antistatic package to prevent electrostatic damage to the unit Electrostatic dischar
72. umentation eese eene ener xi Customer COMMUNICATION uso avete e br Eo DU RES Rex EDO mdp t gae tese pL es s gas xii Chapter 1 troceado 1 1 A A E 1 1 What Yom Need to Get di da 1 1 Optional EQUIP IS 1 2 A E 1 2 Unpac EIE coute tse dieser ao O 1 2 Chapter 2 Setup ced A tL IS La ceras 2 1 Safety Informations NS E EE UN NR a neue ee Bese ura E ents aes 2 4 Connecting the ER 8 16 to Your DAQ Device sse eene 2 5 Chapter 3 Signal OMC ooo rode oae vedete aci ed ee 3 1 Front Connectors an db Das ba usen OS 3 1 Using DIODOS 3 1 Wing DIO 32 Boards a eae ets 3 2 PONES o eise 3 2 Channel Connect A ee aie 3 3 Power up Conditions iaa ibi 3 4 Ware CAME tata 3 4 Cm ae a dios 3 4 Contact Protection for Inductive Loads eene 3 4 Connecting Your Signal LES redee oe NUES np Uo hector de exitu Ipae ciales arias 3 6 Internal Connectors ics ger eaten de 3 7 Daisy hamms the ERG Gis aho du xot uite o eb indt aps 3 8 Using the SC 205X senes with the BR iS 3 8 DAQ System Configurations with the ER 8 16 sse 3 0 Chapter 4 Theory of Operatoria 4 1 Ig O A na e a te spac eee eee OS 4 1 Disita Lera 4 3 Relay E AM EAE 4 3 O National Instruments Corporation v ER 8 16 User Manual Contents Appendix A Specifications a ad do bos A 1 Appendix B VOCE IAEA E obe dut B 1 Appendix C Contact Protection tia asta da a O C 1 Appendix D Takamisawa VE Series Relay Technical Dat
73. us electrical shock do not perform procedures involving cover removal unless you are qualified to do so Before removing the cover make sure that the computer and the power supply are turned off and that the signal wires connected to the screw terminals do not contain live voltages 2 Remove the ER 8 16 top cover by placing a screwdriver in the groove at the bottom of the ER 8 16 and rotating the screwdriver 3 Install the contact protection preferably across the load if your load is inductive Refer to the Contact Protection for Inductive Loads section earlier in this chapter For additional information refer to Appendix C Contact Protection 4 Connect the wires to the screw terminals 5 Bundle the wires at the rear end of the ER 8 16 and use a tie wrap to tie them together 6 Replace the top cover so that the bundled wires fall within the smaller rectangular hole in the top cover 7 Tighten the top cover by fastening the screws to the bottom cover Internal Connectors There are two 26 pin connectors marked IN and OUT on the ER 8 16 PWB These connectors are visible when you remove the top cover Warning KEEP AWAY FROM LIVE CIRCUITS DO NOT REMOVE THE TOP COVER of the ER 8 16 when it is operating or is powered on If signal wires are connected to the ER 8 16 dangerous voltages may exist even when the equipment is turned off To avoid dangerous electrical shock do not perform procedures involving cover removal unless you

ER-8/16 User Manual - National Instruments

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