USB-SSR24 User`s Guide
Contents
1. Electric Fast Transient Burst immunity Criteria A IEC 1000 4 5 1995 Surge immunity Criteria C IEC 1000 4 6 1996 Radio Frequency Common Mode immunity Criteria A IEC 1000 4 8 1994 Magnetic Field immunity Criteria A IEC 1000 4 11 1994 Voltage Dip and Interrupt immunity Criteria A Declaration of Conformity based on tests conducted by Chomerics Test Services Woburn MA 01801 USA in June 2005 Test records are outlined in Chomerics Test Report EM14221 05 We hereby declare that the equipment specified conforms to the above Directives and Standards Oot Carl Haapaoja Director of Quality Assurance Measurement Computing Corporation 10 Commerce Way Suite 1008 Norton Massachusetts 02766 508 946 5100 Fax 508 946 9500 E mail info mccdag com www mccdag com2. USB IN POWER IN USB POWER OUT OUT Power up state configuration switch S3 1 O module type m 3 5 EB 000 e oooh a E cco E 006 a E ooa switch S1 i o Q gt Bo Control logic_ Fi 3 lhe ee s n 5 ooo FB ooo wl EE polarity switch S2 i 9 0 u B74 Screw terminals Figure 3 1 USB SSR24 component locations USB connectors The USB SSR24 has two USB connectors labeled USB IN and USB OUT on the enclosure and on the board Connect the USB IN connector to the USB port on your computer or USB hub connected to your computer using the supplied USB cable The USB OUT connector is a downstream hub output port intended for use with other MCC USB Series products only The USB hub is self powered and can provide 100 mA maximum current at 5 V For information on daisy chaining to other MCC USB Series products refer to Daisy chaining multiple USB SSR24 devices on page 3 3 External power connectors The USB SSR24 has two external power connectors labeled POWER IN and POWER OUT on the enclosure The POWER IN connector is labeled PWR IN on the board and the POWER OUT connector is labeled PWR OUT on the board Connect the POWER IN connector to the supplied 9 V external power supply External power is required to operate the USB SSR24 The POWER OUT connector lets you power additional daisy chained MCC USB Series products from a single external power supply Depending on your l
3. You must connect the external power supply before connecting the USB connector to the USB SSR24 To connect the power supply to your USB SSR24 do the following 1 Connect the external power cord to the power connector labeled POWER IN on the USB SSR24 enclosure PWR IN on the board Refer to Figure 3 1 for the location of this connector 2 Plug the AC adapter into a power outlet The PWR LED lights up when 9 V power is supplied to the USB SSR24 If the voltage supply is less than 6 0 V or more than 12 5 V the PWR LED does not light up Do not connect external power to the POWER OUT connector The power connector labeled POWER OUT on the enclosure PWR OUT on the board is used to provide power to an additional MCC USB Series product If you connect the external power supply to the POWER OUT connector the USB SSR24 does not receive power and the PWR LED does not light up Connecting the USB SSR24 to your system To connect the USB SSR24 to your system do the following 1 Turn your computer on 2 Connect the USB cable to the USB connector labeled USB IN on the USB SSR24 3 Connect the other end of the USB cable to a USB port on your computer or to an external USB hub that is connected to your computer The USB LED lights up The USB cable provides communication to the USB SSR24 When you connect the USB SSR24 for the first time a Found New Hardware popup balloon Windows XP or dialog other Windows versions opens
4. 4 Module 4 5 Module 5 5 Module 5 6 Module 6 6 Module 6 7 Module 7 7 Module 7 8 Module 8 8 Module 8 9 Module 9 9 Module 9 10 Module 10 10 Module 10 11 Module 11 11 Module 11 12 Module 12 12 Module 12 13 Module 13 13 Module 13 14 Module 14 14 Module 14 15 Module 15 15 Module 15 16 Module 16 16 Module 16 17 Module 17 17 Module 17 18 Module 18 18 Module 18 19 Module 19 19 Module 19 20 Module 20 20 Module 20 21 Module 21 21 Module 21 22 Module 22 22 Module 22 23 Module 23 23 Module 23 24 Module 24 24 Module 24 4 4 CE Declaration of Conformity Manufacturer Measurement Computing Corporation Address 10 Commerce Way Suite 1008 Norton MA 02766 USA Category Electrical equipment for measurement control and laboratory use Measurement Computing Corporation declares under sole responsibility that the product USB SSR24 to which this declaration relates is in conformity with the relevant provisions of the following standards or other documents EU EMC Directive 89 336 EEC Electromagnetic Compatibility EN 61326 1997 Amendment 1 1998 Emissions Group 1 Class A EN 55011 1990 CISPR 11 Radiated and Conducted emissions Immunity EN61326 Annex A IEC 1000 4 2 1995 Electrostatic Discharge immunity Criteria C IEC 1000 4 3 1995 Radiated Electromagnetic Field immunity Criteria C IEC 1000 4 4 1995
5. sure that the signal wires do not contain live voltages Use 12 AWG to 22 AWG wire for your signal connections Properly insulate the wires to avoid any short circuit to the other channels ground or other points on the board Caution Keep the length of stripped wire at a minimum to avoid a short to the enclosure When connecting your field wiring to the screw terminals use the strip gage on the terminal strip or strip to 5 5 7 0 mm 0 215 to 0 275 long LED states Independent LEDs D1 D24 at each module position indicate the on off status of each module The LED lights up when an output module is active turned on or when an input module detects an input voltage logic high Daisy chaining multiple USB SSR24 devices Daisy chained MCC USB Series products connect to the USB bus through the high speed hub on the USB SSR24 You can daisy chain a maximum of four MCC USB Series products to a single USB 2 0 port or USB 1 1 port on your computer Use the supplied cable or an equivalent cable when daisy chaining MCC USB Series products To daisy chain two or more USB SSR24 modules follow the steps below This procedure assumes you already have one USB SSR24 connected to a computer and to an external power source The USB SSR24 already connected to the computer is referred to as the connected module The USB SSR24 you want to daisy chain to the connected module is referred to as the new module 1 Connect the Power OUT connector o
6. and follow the instructions for reaching Tech Support Fax 508 946 9500 to the attention of Tech Support Email techsupport mccdaq com Installing the software Refer to the Quick Start Guide for instructions on installing the software on the Measurement Computing Data Acquisition Software CD This booklet is available in PDF at www mccdag com PDFmanuals DA Q Software Quick Start pdf Installing the USB SSR24 Before you connect the USB SSR24 to your computer configure the hardware and then connect the external power supply that was shipped with the device You can connect up to four MCC USB Series products in a daisy chain configuration to a single USB 1 1 port or USB 2 0 port on your computer Configuring the hardware switches The USB SSR24 has three on board switches that you set to configure the I O module type relay logic polarity and relay power up state Configure these switches before you connect the external power supply to the USB SSR24 Factory configured default settings are listed in Table 2 1 Refer to Figure 3 1 for the location of each switch Remove from the enclosure to access the on board switches To change the configuration of a switch you must first remove the USB SSR24 from the enclosure Turn external power off before changing the switch settings Table 2 1 Default switch configuration Board Label Description Default setting IN OUT S1 Configures the I O type per g
7. power up When switched to pull down modules are active on power up T O module logic polarity Selectable via switch S2 Switch settings for polarity can be read back via software Default to non inverted For input modules invert mode returns a 1 when module is active non invert mode returns a 0 when module is active For output modules invert mode allows users to write a 1 to activate the module non invert mode allows users to write a 0 to activate the module Power Table 2 Power specifications Parameter Conditions Specification USB 5 V input voltage range 4 75 V min to 5 25 V max USB 5 V supply current All modes of operation 10 mA max External power supply required MCC p n CB PWR 9 9V 10O I1IA Voltage supervisor limits PWR LED Vext lt 6 0 V Vext gt 12 5 V PWR LED Off power fault 6 0 V lt Vext lt 12 5 V PWR LED On External power consumption All modules on 100 mA downstream hub power 800 mA typ 950 mA max All modules off 0 mA downstream hub power 200 mA typ 220 mA max 4 1 USB SSR24 User s Guide Specifications External power input Table 3 External power input specifications Parameter Conditions Specification External power input 6 0 VDC to 12 5 VDC 9 VDC power supply included Voltage supervisor limits PWR LED 6 0 V gt Vext or Vext gt 12
8. promptly Lifetime Harsh Environment Warranty We will replace any product manufactured by Measurement Computing Corporation that is damaged even due to misuse for only 50 of the current list price I O boards face some tough operating conditions some more severe than the boards are designed to withstand When a board becomes damaged just return the unit with an order for its replacement at only 50 of the current list price We don t need to profit from your misfortune By the way we honor this warranty for any manufacturer s board that we have a replacement for 30 Day Money Back Guarantee You may return any Measurement Computing Corporation product within 30 days of purchase for a full refund of the price paid for the product being returned If you are not satisfied or chose the wrong product by mistake you do not have to keep it Please call for an RMA number first No credits or returns accepted without a copy of the original invoice Some software products are subject to a repackaging fee These warranties are in lieu of all other warranties expressed or implied including any implied warranty of merchantability or fitness for a particular application The remedies provided herein are the buyer s sole and exclusive remedies Neither Measurement Computing Corporation nor its employees shall be liable for any direct or indirect special incidental or consequential damage arising from the use of its products even if Measurement Com
9. 24 SSR IAC 05 SSR OAC 05 SSR IAC 05A SSR OAC 05A SSR IDC 05 SSR ODC 05 SSR IDC OSNP SSR ODC 05A SSR ODC 05R Details on these SSR modules are available from our web site at www mcecdag com cbicatalog directory asp dept_id 246 amp top_id 25 Remove the USB SSR24 from the enclosure to install SSR modules You must remove the USB SSR24 from the enclosure to access the solid state relay module mounting positions USB SSR24 block diagram USB SSR24 functions are illustrated in the block diagram shown here Switch S1 I O type alles eed nae ee jee i ee ee External 23 68 33 a8 Power SSR Module 5 SSR Module 6 SSR Module 7 SSR Module 8 2 SSR Modules 1 8 Port A 8 Rey Power Monitor Power Regulator SSR Modules 9 16 Port B 8 Relay 4 D lt S fog x o x o x o oa o3 a3 os ae OS OB az os z 2 N Load 6 s v driver a ise x ite Ko 2 xo E v Ns 5 2 t 2 2 oslovil Hs os 00 fe o O fe g ro ZIL 500 mA o m 3 3 _ USB USB 2 0 _ g Microcontroller compliant p KO a x x o 5 ce Ae Ioe lae las 4 Relay interface n ag oie o oro driver D fe o fe fe te R SSR Modules 17 20 Port CL iS N A i a X o Z o 5 ta TE ae ae ee 4 Relay Switch S2 ng oro ng Wiha driver inv non inv X 3 N Switch S3 pull up down Figure 1 1 USB SSR24 func
10. 5 V PWR LED Off power fault Note 1 6 0 V lt Vext lt 12 5 V PWR LED On External power adapter included MCC p n CB PWR 9 9 V 10 1 A Note 1 The USB SSR24 monitors the external 9 V power supply voltage with a voltage supervisory circuit If this power supply exceeds its specified limit the PWR LED will turn off indicating a power fault condition External power output Table 4 External power output specifications Parameter Conditions Specification External power output current range 4 0 A max External power output Note 2 Voltage drop between power input 0 5 V max and daisy chain power output Compatible cable s for daisy chain C MAPWR x x 2 3 or 6 feet Note 2 The daisy chain power output option allows multiple Measurement Computing USB boards to be powered from a single external power source in a daisy chain fashion The voltage drop between the module power supply input and the daisy chain output is 0 5 V max Users must plan for this drop to assure the last module in the chain will receive at least 6 0 VDC USB specifications Table 5 USB specifications USB B connector Input USB device type USB 2 0 full speed Device compatibility USB 1 1 USB 2 0 USB A connector Downstream hub output port USB hub type Supports USB 2 0 high speed full speed and low speed operating points Self powered 100 mA max downstream VBUS capability C
11. USB SSR24 USB based 24 Solid state Relay Module Interface Device User s Guide MEASUREMENT COMPUTING USB SSR24 USB based 24 Solid state Relay Module Interface Device User s Guide A AY MEASUREMENT COMPUTING Document Revision 5 August 2006 Copyright 2006 Measurement Computing Corporation Your new Measurement Computing product comes with a fantastic extra Management committed to your satisfaction Refer to www mccdaq com execteam html for the names titles and contact information of each key executive at Measurement Computing Thank you for choosing a Measurement Computing product and congratulations You own the finest and you can now enjoy the protection of the most comprehensive warranties and unmatched phone tech support It s the embodiment of our two missions To offer the highest quality computer based data acquisition control and GPIB hardware and software available at the best possible price To offer our customers superior post sale support FREE Whether providing unrivaled telephone technical and sales support on our latest product offerings or continuing that same first rate support on older products and operating systems we re committed to you Lifetime warranty Every hardware product manufactured by Measurement Computing Corporation is warranted against defects in materials or workmanship for the life of the product Products found defective are repaired or replaced
12. aq com pdfs USB SSR24 pdf MCC s Quick Start Guide is available on our web site at www mecdag com PDFmanuals DAQ Software Quick Start pdf MCC s Guide to Signal Connections is available on our web site at www mcecdag com signals signals pdf MCC s Universal Library User s Guide is available on our web site at www mcecdag com PDFmanuals sm ul user guide pdf MCC s Universal Library Function Reference is available on our web site at www mecdag com PDFmanuals sm ul functions pdf MCC s Universal Library for LabVIEW User s Guide is available on our web site at www mecdag com PDFmanuals SM UL LabVIEW pdf USB SSR24 User s Guide this document is also available on our web site at www mcecdag com PDFmanuals USB SSR24 pdf vi Chapter 1 Introducing the USB SSR24 Overview USB SSR24 features This user s guide contains all of the information you need to connect the USB SSR24 to your computer and to the external devices you want to control The USB SSR24 is a USB 2 0 high drive full speed solid state relay board supported under popular Microsoft Windows operating systems This manual explains how to install and configure the USB SSR24 The USB SSR24 is designed for use in your control applications to switch on and off a variety of devices such as fans blowers pumps etc The USB SSR24 is a mounting rack for 24 solid state relay SSR modules The backplane is divided into two groups o
13. as the USB SSR24 is detected Found New Hardware USB SSR24 SB usessnas i Found New Hardware Windows has found new hardware and is locating the software for it When installation is complete the USB LED should flash and then remain lit This indicates that communication is established between the USB SSR24 and your computer If the USB LED turns off If the USB LED is lit but then turns off the computer has lost communication with the USB SSR24 To restore communication disconnect the USB cable and then reconnect it This should restore communication and the USB LED should turn back on If you are running Windows XP and connect the USB SSR24 to a USB 1 1 port a balloon displays the message Your USB device can perform faster if you connect to a USB 2 0 port You can ignore this message The USB SSR24 will function properly when connected to a USB 1 1 port Caution Do not disconnect any device from the USB bus while the computer is communicating with the USB SSR24 or you may lose data and or your ability to communicate with the USB SSR24 2 4 Chapter 3 Functional Details Internal components The USB SSR24 has the following internal components as shown in Figure 3 1 Two 2 USB connectors Two 2 external power connectors USB LED PWR LED J O module type switch S1 Control logic polarity switch S2 Power up state configuration switch S3 Screw terminals
14. ccesscssesseesecescesceeseeseceaecsseesensecsaecseeeseesecaaecaeeeeeeseeseceaecaaeeeeeaeecsecaeeeeeeaecaaecaeeeeeeaeeeaeeneees 1 2 USB SSR24 block diagram EE E A E A E E 1 2 SOltware fea ares E E AA AE int Tie E E A A ool 4 casa ete 1 3 Connecting a USB SSR24 to your Computer iS CASY eccescceseceseceseceecseeesecseecseeeseeeeeeneeeeeeeseesseeeseenseeaeenaes 1 3 Chapter 2 Installing the USB SSR24 cscccessesessseeeeeeeseeeeeseseeeseeeseeeseeneeeeeseseseeeseseseeeseseseeesesesnenseseseanenseseanens What comes with your USB SSR24 shipment Hardware taana AEn ANEN AEE EA eee esta haps ince dah eka EEA a TASER Sak TES Ep Tad A ena Additional documentation oisin ceccvacaiesies E E E E stewed ATE EREE EEEE OE E EEE AEE ih Unpacking the USB SSR24 0 e oe secccsccccicsseeceeistescebesedudeuscs sac e e a e a e a E ei Installing the software aeien iesi E E EE EE E EE E R eect Installing the USB SSR24 A AE E E A E EE Configuring the hardware switches cccccscessessesseessceseesseeseeseceaecseeeseeseceaecaeeesesecsaecseeeeeeseeaecsaecseeeeesecaaecaeeeeeneeeaeeneees Connecting the external power supply eeceeseeseeeeeeteeeseeneeee Connecting the USB SSR24 to your system Chapter 3 Functional Detalll S a r fee tee clive re tin tek ait ne te Sine dee ese aaa a a aaa AEn ae Kaaa a a EAEn Aaina ata 3 1 Internal components sic ce o eea eek A RRR AH ee eh RM OR Re 3 1 WS Bi COMME CLOTS 5 asec toe cies ce casietec I A Sane es wk no a E Au
15. f eight modules and two groups of four modules You set the module type for each module group with an on board switch You cannot mix input and output modules within a group The control logic polarity for each module group is switch settable for active high or low logic The power up state for output modules is switch settable with an on board switch Independent LEDs at each module position indicate the on off status of each module Switch settings can be read back with software The USB SSR24 has 24 pairs of screw terminals for your field wiring connections Positive and negative relay contacts are brought out to the screw terminals The USB SSR24 is powered by an external 9 V 1 A regulated power supply that is shipped with the device A USB cable is also included USB out and power out connections let you power multiple MCC USB Series products from a single external power source in a daisy chain fashion The USB SSR24 is shipped in a rugged enclosure that you can mount on a DIN rail or on a bench 1 1 USB SSR24 User s Guide Introducing the USB SSR24 Compatible SSR modules The USB SSR24 board has locations for 24 solid state relay modules that you can install in your USB SSR24 board The SSR modules use a standard color scheme so you can quickly identify what module type is installed Mounting screw threads are provided for you to easily install the SSR modules MCC offers SSR modules that are compatible with the USB SSR
16. for non inverted logic active low as shown in Figure 2 4 em CH _ CL m B Com A NON INVERT INVERT Figure 2 4 Control logic polarity switch S2 For input modules invert mode returns a 1 when the modules are active Non invert mode returns a 0 when the modules are active For output modules invert mode allows you to write a 1 to activate the module Non invert mode allows you to write a 0 to activate the module The I O type and the relay logic settings control what happens when a module is activated For example a module group configured for SSR input with non inverted logic outputs a low logic level when the module is ON A module group configured for SSR output with non inverted logic requires a low logic level to turn the output module ON Relay power up state configuration Configure switch S3 to set the state of the output relays at power up By default this product is shipped with switch S3 configured for pull up for all banks modules inactive on power up as shown in Figure 2 5 The relay settings are labeled P UP and P DN on the switch When switched to P DN pull down modules are active on power up P UP___P DN Cam CH Com CL _ B mm A S3 Figure 2 5 Relay power up state switch S3 2 3 USB SSR24 User s Guide Installing the USB SSR24 Connecting the external power supply Power to the USB SSR24 is provided with the 9 V 1 A external power supply MCC p n CB PWR 9
17. ife support systems and or devices without prior written consent from Measurement Computing Corporation Life support devices systems are devices or systems which a are intended for surgical implantation into the body or b support or sustain life and whose failure to perform can be reasonably expected to result in injury Measurement Computing Corporation products are not designed with the components required and are not subject to the testing required to ensure a level of reliability suitable for the treatment and diagnosis of people iii Table of Contents Preface About this User s G lden ceca cca oe cence ac ec nn cede dered aada a ce ee setae cee aE aaae anne eae vi What you will learn from this user s guide 0 0 0 eceeccescceseceseceeesecusecssecaaecaeecseeeneeaceaeeescenseceeceaecnaeeaecaaecaeeeaes vi Conventions in this user s guide ccceecesseescessceescesecescceseceaecsaecaeecaeeeseeecesnesseeeseseseseseeseesseeseceaecaecesecatecaeeenes vi Where to find more information cccccecccsseesseeseeeseeeeceeceseceseensecnaeceaecaeecaeeeaeeeseeeeeeeesseenseeesecaeeaecesecntecaeeeaes vi Chapter 1 Introducing the USB SSR24 cccccseecccseseeeeeeeseeeseeeeeeseseeneeseeeseeesesesneeseseseeesesesneeseseseeeseseseeeeenseeanens 1 1 Overview USB SSR24 features ccccescesccssecsseeseeeseeseeeescesecescensecesecsaecsaeceaecseeeaeeaaecseecaeeeaeseseeeeeenaeenseenaeenaes 1 1 Compatible SSR modules 0 cccccec
18. in a group You can use nstaCal to read the current I O type configuration for each module group Figure 3 2 shows switch S1 configured with its default settings S1 IN OUT Figure 3 2 Switch S1 default configuration Control logic polarity switch S2 Switch S2 is a four position switch that sets the control logic polarity for each module group for inverted active high or non inverted active low default Figure 3 3 shows switch S1 configured with its default settings Use InstaCal to read the current logic configuration for each module group am CH am CL 7 8 TIA NON 2 INVERT INVERT Figure 3 3 Switch S2 default configuration 3 2 USB SSR24 User s Guide Functional Details Relay power up state switch S3 Switch S3 is a four position switch that sets the state of the output relays at power up You can use nstaCal to read the current resistor configuration for each module group Figure 3 4 shows switch S3 configured with its default settings P UP___P DN __ CH _ CL m _ B om A S3 Figure 3 4 Switch S3 default configuration Screw terminals The USB SSR24 has 24 screw terminal pairs for your field wiring connections Each SSR module has a dedicated positive and negative screw terminal Each screw terminal is identified with a label on the board and on the underside of the enclosure lid Caution Before connecting wires to the screw terminals turn off the power to the USB SSR24 and make
19. is user s guide explains how to install configure and use the USB SSR24 so that you get the most out of its solid state relay features This user s guide also refers you to related documents available on our web site and to technical support resources Conventions in this user s guide For more information on Text presented in a box signifies additional information and helpful hints related to the subject matter you are reading Caution Shaded caution statements present information to help you avoid injuring yourself and others damaging your hardware or losing your data lt tt gt Angle brackets that enclose numbers separated by a colon signify a range of numbers such as those assigned to registers bit settings etc bold text Bold text is used for the names of objects on the screen such as buttons text boxes and check boxes For example 1 Insert the disk or CD and click the OK button italic text Italic text is used for the names of manuals and help topic titles and to emphasize a word or phrase For example The JnstaCal installation procedure is explained in the Quick Start Guide Never touch the exposed pins or circuit connections on the board Where to find more information The following electronic documents provide information relevant to the operation of the USB SSR24 MCC s Specifications USB SSR24 the PDF version of the Specifications chapter in this guide is available on our web site at www mccd
20. l for 25 C unless otherwise specified Specifications in italic text are guaranteed by design I O module configuration Table 1 I O module configuration specifications Modules 1 8 Selectable via switch S1 A position as either input modules or output default modules Switch settings for direction can be read back via software Do not mix input and output modules within this bank of eight Modules 9 16 Selectable via switch S1 B position as either input modules or output default modules Switch settings for direction can be read back via software Do not mix input and output modules within this bank of eight Modules 17 20 Selectable via switch S1 CL position as either input modules or output default modules Switch settings for direction can be read back via software Do not mix input and output modules within this bank of four Modules 21 24 Selectable via switch S1 CH position as either input modules or output default modules Switch settings for direction can be read back via software Do not mix input and output modules within this bank of four Pull up pull down on digital VO lines Configurable via switch S3 with 2 2 K ohm resistor network Switch settings for pull up pull down selection can be read back via software Default to pull up Switch settings are applicable during power up conditions of output modules only Modules are active low When switched to pull up modules are inactive on
21. n the connected module to the Power IN connector on the new module This step is required only if you plan to daisy chain power to another module 2 Connect the USB OUT connector on the connected module to the USB IN connector on the new module 3 3 USB SSR24 User s Guide Functional Details 3 To add another module repeat steps 1 2 with the module you just connected now being the connected module A daisy chain example is shown in Figure 3 5 Note that the last board in the chain is supplied with external power USB p rt to POWER OUT USB IN to POWER IN CB PWR 9 supply to POWER IN USB OUT to USB IN 53 USB OUT to USB IN CB PWR 9 supply to POWER IN z gt Seen Figure 3 5 USB SSR24 daisy chain connections Power limitations using multiple USB SSR24 devices When daisy chaining additional MCC USB Series products to the USB SSR24 you must ensure that you provide adequate power to each board that you connect The USB SSR24 is powered with a 9 VDC nominal 1 0 A external power supply Voltage drop A drop in voltage occurs with each board connected in a daisy chain system The voltage drop between the power supply input and the daisy chain output is 0 5 V maximum Factor in this voltage drop when you configure a daisy chain system to ensure that at least 6 0 VDC is provided to the last board in the chain 3 4 Chapter 4 Specifications Typica
22. oad requirements daisy chained products may require a separate power supply Refer to Power limitations using multiple USB SSR08 devices on page 3 4 for more information 3 1 USB SSR24 User s Guide Functional Details USB LED The USB LED indicates the communication status of the USB SSR24 It uses up to 5 mA of current and cannot be disabled Table 3 2 explains the function of the USB LED Table 3 2 USB LED illumination USB LED Indication Ilumination Steady green The USB SSR24 is connected to a computer or external USB hub Pulses green Initial communication is established between the USB SSR24 and the computer or data is being transferred PWR LED The PWR LED lights up when external power is supplied The USB SSR24 incorporates an on board voltage supervisory circuit that monitors the external 9 V power supply Table 3 3 explains the function of the PWR LED Table 3 3 PWR LED illumination PWR LED Indication illumination Steady green External power is supplied to the USB SSR24 Off Power is not supplied by the external power supply or a power fault has occurred A power fault occurs when the input power falls outside of the specified voltage range of the external supply 6 0 V 12 5 V I O module type switch S1 Switch 1 is a four position switch that sets the type of each module group for input or output default You cannot mix input and output modules with
23. ompatible products MCC USB Series devices USB cable type upstream and A B cable UL type AWM 2527 or equivalent min 24 AWG VBUS GND min 28 downstream AWG D D USB cable length 3 meters max Digital I O transfer rates Table 6 Digital I O transfer rate specifications Digital I O transfer rate System dependent 33 to 1000 port reads writes or single bit reads writes per software paced second typ 4 2 USB SSR24 User s Guide Specifications Mechanical Table 7 Mechanical specifications Card dimensions without modules 431 8 mm L x 121 9 mm W x 22 5 mm H 17 0 L x 4 8 W x 0 885 H Enclosure dimensions 482 6 mm L x 125 7 mm W x 58 9 mm H 19 00 L x 4 95 W x 2 32 H Environmental Table 8 Environmental specifications Operating temperature range 0 to 70 C Storage temperature range 40 to 85 C Humidity 0 to 90 non condensing Main connector Table 9 Main connector specifications Connector type Screw terminal Wire gauge range 12 22 AWG 4 3 USB SSR24 User s Guide Specifications Screw terminal pin out Table 10 Screw terminal pin out Pin Signal name 1 Module 1 1 Module 1 2 Module 2 2 Module 2 3 Module 3 3 Module 3 4 Module 4
24. puting Corporation has been notified in advance of the possibility of such damages HM USB SSR24 doc ii Trademark and Copyright Information TracerDAQ Universal Library Harsh Environment Warranty Measurement Computing Corporation and the Measurement Computing logo are either trademarks or registered trademarks of Measurement Computing Corporation Windows Microsoft and Visual Studio are either trademarks or registered trademarks of Microsoft Corporation LabVIEW is a trademark of National Instruments CompactFlash is a registered trademark of SanDisk Corporation All other trademarks are the property of their respective owners Information furnished by Measurement Computing Corporation is believed to be accurate and reliable However no responsibility is assumed by Measurement Computing Corporation neither for its use nor for any infringements of patents or other rights of third parties which may result from its use No license is granted by implication or otherwise under any patent or copyrights of Measurement Computing Corporation All rights reserved No part of this publication may be reproduced stored in a retrieval system or transmitted in any form by any means electronic mechanical by photocopying recording or otherwise without the prior written permission of Measurement Computing Corporation Notice Measurement Computing Corporation does not authorize any Measurement Computing Corporation product for use in l
25. rdized plug and port combination Data can flow two ways between a computer and peripheral over USB connections Chapter 2 Installing the USB SSR24 What comes with your USB SSR24 shipment As you unpack your USB SSR24 make sure that the following components are included Hardware USB SSR24 External power supply and cord CB PWR 9 9 volt 1 amp DC power supply USB cable 2 meter length Additional documentation In addition to this hardware user s guide you should also receive the Quick Start Guide available in PDF at www mcecdag com PDFmanuals DAQ Software Quick Start pdf This booklet supplies a brief description of the software you received with your USB SSR24 and information regarding installation of that software Please read this booklet completely before installing any software or hardware 2 1 USB SSR24 User s Guide Installing the USB SSR24 Unpacking the USB SSR24 As with any electronic device you should take care while handling to avoid damage from static electricity Before removing the USB SSR24 from its packaging ground yourself using a wrist strap or by simply touching the computer chassis or other grounded object to eliminate any stored static charge If your USB SSR24 is damaged notify Measurement Computing Corporation immediately by phone fax or e mail For international customers contact your local distributor where you purchased the USB SSR24 Phone 508 946 5100
26. roup for input or output OUT Output NON INVERT INVERT Configures the relay logic parity per module group for invert or NON INVERT S2 non invert logic active low P UP P DN S3 Configures the power up state of output relays for pull up or pull down P UP Pull up Each DIP switch sets the configuration of one module group The switch labeled A configures modules 1 through 8 the switch labeled B configures modules 9 through 16 the switch labeled CL configures modules 17 through 20 and the switch labeled CH configures modules 21 through 24 You can use JnstaCal to read the current configuration of each switch Configures modules 21 24 L _ CH Configures modules 17 20 L m CL Configures modules 9 16 gt ___ B Configures modules 1 8 gt maa A Figure 2 2 Typical board switch 2 2 USB SSR24 User s Guide Installing the USB SSR24 I O module type Configure switch S1 to set the type of each module group for input or output You cannot mix input and output modules within a group By default switch S1 is shipped with all modules configured for output as shown in Figure 2 3 S1 IN OUT Figure 2 3 I O module type switch S1 Control logic polarity Configure switch S2 to set the control logic polarity for each module group for inverted active high or non inverted active low default logic By default these devices are shipped with switch S2 set to NON INVERT all modules configured
27. ta STEPS Sas Ah he PEE ed ee 3 1 V O module type switch S1 oo eee eceseecseeseceeeseeeceeeeeeneeseseeees Control logic polarity switch S2 Relay power up state switch S3 Screw terminals nren ena N caybac Socck vad sect A NA a onc babed be vee E E A A AAA Seba ob TEED States en o E E a ts STA tte E EA R EE K EERE Daisy chaining multiple USB SSR24 devices se sesessseseeeesseerssseeressestsestesessteressesttsteseestsseetestrsessreereseeseent 3 3 Power limitations using multiple USB SSR24 devices ssssesssesseeeisressrstsesereretsssststetrstsesseststrrrsesessesretrerst 3 4 Voltage dropinn iiss oenar aE n eia e E a AAEE A AA i cas E A ie O R ERS 3 4 Chapter 4 SPOCHI CALI ONS cc TTT TTT ETTE 4 1 VO module configuration c 2 2 asssehdons wetland wa diehies asthiel and wees Ati hedeetat waned ets 4 1 POWERS ce aneio eie r ie El ek E E RR E heck debe cade sedan ca setae A sbiede ck esd E E E E R 4 1 External power Input sere a eee EEE ER A as O E Woes Ree RREA 4 2 External power Output sesnesnenniein iens in n E EE E T R E a R 4 2 USB specifications er n n i a E EE ES o EEE EE E o EEEE EE E ETETE 4 2 Digital I O transter e E T E E E A A E E E oh cones 4 2 Mechanical AEE E E E EE EE 4 3 Environmentalt i 2s22 ete ee E E I TER OTRE E AE EE R 4 3 iv USB SSR24 User s Guide Main connector Screw terminal pin out Preface About this User s Guide What you will learn from this user s guide Th
28. tional block diagram 1 2 USB SSR24 User s Guide Introducing the USB SSR24 Software features For information on the features of JnstaCal and the other software included with your USB SSR24 refer to the Quick Start Guide that shipped with your device The Quick Start Guide is also available in PDF at www mecdag com PDFmanuals DAQ Software Quick Start pdf Check www mccdag com download htm for the latest software version or versions of the software supported under less commonly used operating systems Connecting a USB SSR24 to your computer is easy Installing a data acquisition device has never been easier The USB SSR24 relies upon the Microsoft Human Interface Device HID class The HID class ships with every copy of Windows that is designed to work with USB ports We use the Microsoft HID because it is a standard and its performance delivers full control and maximizes data transfer rates for your USB SSR24 No third party device driver is required You can connect the USB SSR24 before or after you install the software and without powering down your computer first When you connect an HID to your system your computer automatically detects it and configures the necessary software You can connect and power multiple HID peripherals to your system using a USB hub You can connect your system to various devices using a standard four wire cable The USB connector improves upon serial and parallel port connectors with one standa
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