Anville Instruments Ltd Series 420SB Data Acquisition System
Contents
1. analogue inputs are needed The SERIES 420SB s internal microprocessor converts all inputs into their correct engineering units for transmission to the host computer COMPATIBLE COMPUTER SYSTEM unit must be have 486 processor a 100Mbyte hard disk with at least 30 Mbytes free for system software and 8Mbytes of RAM A reasonably sized hard disk is necessary for storing SERIES 420SB data files if logging for long periods System Unit and Memory The system unit is the large box component of the computer The back of the unit supports all ports used for connecting your peripheral equipment including the SERIES 420SB Your SERIES 420SB will plug into to either COM1 or COM2 serial ports using the supplied data cable but on some system units the mouse could be using COM1 which means using COM2 instead It is also possible that COM2 is a 25 pin connector In this case you ll need a 25 pin female to 9 pin male adapter A printer port is also required The system unit houses the PC s main microchip and the computer s internal memory as well The memory has several names You commonly hear it referred to as RAM Random Access Memory The SVGA Monitor The television like screen is called the monitor The monitor is one place where graphical data and spreadsheet data will be sent for viewing Your monitor plugs into the back of your system unit The Printer Your printer provides a more permanent way of recording your SERIES 420SB s system2. results It can be used to provide hard copies of on screen information and spreadsheet data The printer can be described as the typewriter of a SCADA logging system The printer plugs into the parallel port at the back of the system unit The Keyboard The keyboard plugs into the back of your system unit Most of the keys are the same as a standard typewriter The letters and numbers in the large centre of the keyboard produce the characters that you type on screen In the main you will use only these keys in conjunction with using your mouse Page 4 of 16 oe 4 Comment 425SB Hardware User Manual March 2002 Iss 1 PART Il SERIES 420SB CONFIGURATION Box Address Your SERIES 420SB is supplied with its address set to zero An address is set by the positions of switches 1 to 4 of the UNIT CONFIGURATION switch array See SERIES 420SB side panel If more than one SERIES 420SB is to be used on the computer port it will be necessary to alter switch settings of any additional SERIES 420SBs thus providing each one with a unique address For example box 1 will have address 0 box 2 address 1 and so on To initialise switch settings power to the SERIES 420SB must be turned off then on The table below provides configuration address and switch settings Switch setting Unit address 123 4 on on on on on off on on off on off on off off off on on on on off on off on off off off on off iT on on off off 12 off on
3. A Anville Instruments Ltd Series 420SB Data Acquisition System Hardware User Manual QP10 March 2002 Issue 1 Anville Instruments Ltd Laser House Doman Road Camberley Surrey GU15 3DF Tel 01276 25107 Fax 01276 708638 NOTICE The contents of this manual are liable to change without notice Whilst every effort has been made to ensure the accuracy of this manual Anville will not be responsible for any errors and omissions or their consequence Windows and MS DOS are registered trademarks of Microsoft Corporation COPYRIGHT This documentation and the software described in it are copyrighted with all rights reserved Under copyright laws neither the documentation nor the software may be copied photocopied reproduced translated or reduced to any electronic medium or machine readable form in whole or in part without the written consent of Anville Instruments Failure to comply with this condition may result in prosecution S425SB Hardware User Manual March 2002 Iss 1 CONTENTS PART I INTRODUCTION TO THE SERIES 420SB PART II SERIES 420SB CONFIGURATION PART III CONNECTING THE SERIES 420SB TO YOUR COMPUTER PART IV SPECIFICATIONS Page 2 of 16 S425SB Hardware User Manual March 2002 Iss 1 AN OVERVIEW OF THIS USER MANUAL This manual is divided into 4 parts Part introduces you to the SERIES 420SB Starting with Part Il the manual shows you how to configure and operate the unit After mastering the system
4. anel connections are made through convenient solderless screw 6 way terminal blocks supplied with the SERIES 420SB Analogue Inputs tye ve Figure 1 Voltage input tye Ve Figure 2 Current loop input 4 to 20mA powered by transmitter or other external source CAUTION Where thermocouples are used involving fluids or condensing gases for example with Autoclaves they must be connected to the data logger in one of two ways 1 Ata point lower than the logger remove at least 2 5cm of insulating material from the thermocouple wire 2 Make thermocouple connections to the logger via flying leads either below logger level or at a distance of 0 5 metres with an in line cable mounting socket attached Both of these methods ensure that any liquids migrating up the thermocouple wire due to the capillary effect escape before reaching the logger Serious damage to the logger will result if liquid is allowed to enter tyg Ve Figure 3 Current loop input 4 to 20mA powered by Series 420SBSB Page 9 of 16 425SB Hardware User Manual March 2002 Iss 1 e Figure 4 Thermocouple input Note do not fit link between pins 4 and 5 if using grounded thermocouples Figure 5 Pt100 or resistive inputs excitation 10y Oy signal Ye Mye Figure 6 Transducer input Transducer Connections 4 20mA output Please note that this wiring diagram is an alternative to Figure 2 and should be
5. ange 0 to 30 watts Over voltage protection 110 140 of nominal output voltage Over load protection pulsing mode auto recovery Line regulation 0 5 max at full load DC pin chart Screen Black Environmental Operating temperature 0 to 30 C 100 load 0 to 40 C 60 load Relative Humidity 20 to 90 General Efficiency 78 min at 30W output Hold up time 12 msec min Withstand voltage I P O P 3KVA I P FG 1 5KVA 1 min Insulation resistance 10 Mohm min from output to ground EMC standards EN55022 IEC801 2 3 4 Safety standards UL 1950 CSA C22 2 NO 234 Notes Page 15 of 16 S425SB Hardware User Manual March 2002 Iss 1 Page 16 of 16
6. d cell switched constant voltage of 10V e For 4 20mA current loop switched constant voltage of 24V Input switching Reed relay 3 pole switching Engineering units As appropriate or selectable mV V mA C as appropriate or selected Scan speed 8 16 inputs per seconds Configuration using X 425SB software Serial link RS232 or RS422 Choice dependant on cable length Cable length Maximum cable length for RS232 operation is approximately 30 metres Maximum cable length for RS422 operation is approximately 1 5 kilometres To avoid electrical interference the serial cable should be installed away from other cables particularly mains voltage cables Ideally the serial link should be installed in it s own trunking Cable Type For runs of up to 30 metres two pair overall foil shielded 24 AWG polyethylene insulated PVC screened Type 0S2P24 UL style 2464 obtainable from Farnell Electronic Services FES For runs of up to 1 5 kilometres two pair overall foil shielded 24 AWG polyethylene insulated PVC screened Page 13 of 16 S425SB Hardware User Manual March 2002 Iss 1 Type FBOS2P24 UL style 2919 obtainable from FES Type 2 UL style 2493 obtainable from RS Components part no 368 738 Note only 2 wires are used BLACK from red black twisted pair and WHITE from white black twisted pair Baud rate Four baud rates are available 1200 2400 9600 19200 Daisy chained linked loggers Maximum nu
7. easuring both pulse count and frequency Hz The type of input configuration is dependent on the type of signal output from equipment connected to the logger Selection of counter or frequency is made during software configuration Connections to the logger are made via a 4 way screw block plug The table and diagrams below show pin and input connections Pin No SignalName Pin No Signal Name 1 5V output 2 input 3 trig level 4 ground A logic level uni polar input with a signal level of between OV to 5V CMOS TTL would generally use the connections shown in the Logic Level Input Circuit diagram OV to 2 4V 100mV logic 0 2 6 100mV to 5V logic 1 Pulse count input has a range of 0 to 65535 counts Counts are not cumulative each new count will replace the previous count input ground Series 425 Logley bmp Logic Level Input Circuit An AC signal bi polar input from 0 to 65Khz would generally be measured using the Zero Crossing Level circuit connections with voltage levels from 100mV peak to peak to 10V peak to peak Voltage levels below 100mV will not be seen by the logger Series 425 Trig level Sinewave bmp Zero Crossing Level Circuit The 5VDC on pin 1 can be used to power devices where the current requirement is not more than 5mA Digital Inputs digin The SERIES 420SB provides 8 optically isolated digital inputs With reference to the table below digin signals on
8. gnal direction Wire Tx to next 425SB white Rx from next 425SB black Signal ground screen 6 RS422link Linked to pin 8 T RS423 link Linked to pin 8 8 5V RS422 Transmission If the overall line length distance between your PC and the second daisy chained logger exceeds 30 metres approx 65 feet an RS422 serial card must be fitted to your PC to maintain signal integrity RS422 signal titles and pin connections are given in the table below In addition the serial cable link between pins 7and 8 must be removed and pins 6 and 8 linked See previous table Signal Signal Direction Name Txb to computer Txa to computer from computer from computer Power Up Note in order to comply with European EMC legislation the Series 420SB must be connected to mains earth No action is necessary if the supplied mains adapter is used The SERIES 420SB is dc powered requiring 5V at 0 5A and 24V at 0 2A The unit is normally supplied with a 230V AC mains adapter which will provide correct input voltages Power enters the SERIES 420SB via the 4 pin connector on the rear panel Where several units are to be mounted within an enclosure it may be beneficial to power them from a Common supply Power connection details are Pin Signal name 1 Earth Page 8 of 16 S425SB Hardware User Manual March 2002 Iss 1 2 OV 3 5V 4 24V Front Panel Connection Details All front p
9. mber of loggers that can be daisy chained is 16 Environmental Operating Range 0 C to 40 C Power supply 5V 0 5 Amps and 24V 0 25 Amps OTHER INPUTS OUTPUTS Frequency input Optically isolated frequency and pulse count Frequency range 0 to 65khz or 0 65535 counts software configured Signal level 100mV pk pk to 10V pk pk or CMOS Digital inputs Voltage free contact TTL or CMOS optically isolated Digital outputs Open collector transistor max sink current 500mA Max switching voltage 24VDC Analogue outputs Isolated 0 to 10V accuracy 0 1 COMPUTER e Processor type 486SX DX e Processor speed 33MHz e Machine memory RAM 8Mb e Display type VGA e Hard disc size 100Mb e Pointer device Mouse tracker ball some laptops e Serial ports 2 e Printer parallel ports 1 POWER SUPPLY SPU 41 16 The power supply is an AC DC switching power supply providing 30 watts of continuous output power The supply is enclosed in plastic case with IEC320 inlet connector to mate with interchangeable mains cable for world wide use This model complies with CUL TUV and CE requirements Input Voltage 90 to 264 VAC Frequency 47 to 63Hz Page 14 of 16 S425SB Hardware User Manual March 2002 Iss 1 Current 1 2A rms 230VAC Inrush current lt 60A peak at 230VAC cold start Output Voltage 5V DC 3 0A max ripple and noise 50mV Voltage 24V DC 1 0A max ripple and noise 150mV Power r
10. off off on off off off 7 off off off off 15 O WIND ays O CIN Unit Configuration Table Communication Baud Rate Your SERIES 420SB is supplied with baud rate set to 9600 If you need to change the baud rate use switches 5 and 6 of the UNIT CONFIGURATION switch array The following table gives switch settings for specific baud rates To initialise switch settings power to the SERIES 420SB must be turned off then on Please note that whichever baud you configure you must also set the same baud in Windows Control Panel to match See below how to do this Switch settings 5 6 Baud rate on on 1200 off on 2400 on off 9600 off off 19200 Communication Format The communication format is fixed and will consist of 8 data bits 1 stop bit no parity flow control none Please note that if you are not using the SERIES 420SB s software it is very important that you set the communication format and baud rate for the chosen serial port using WINDOWS Start Settings Control Panel before operating the SERIES 420SB Page 5 of 16 S425SB Hardware User Manual March 2002 Iss 1 Analogue Outputs option Two analogue outputs may be factory fitted to the SERIES 420SB Configuration details are shown below with connections being made via a 4 pin plug in terminal block Signal name Pin no Signal name anout ground 2 anout 2 Frequency Input The Series 420SB provides inputs for m
11. pins 2 5 are measured with respect to pin 1 and digin signals on pins 5 8 are measured with respect to pin 6 Page 6 of 16 425SB Hardware User Manual March 2002 Iss 1 Pin Signalname __ Pin Signal name ground ground digin 1 digin 5 1 2 3 digin 2 digin 6 4 digin 3 digin 7 5 digin 4 digin 8 The input connector provides access to one end of the LED of an optical isolator with a 4K7 series resister to limit current Connections are via a 10 pin plug supplied with the unit Relay Contact Series 425 Digin ground A typical digital input circuit digin2 bmp Digital Outputs Digout The SERIES 420SB provides 8 digital outputs These are open collector transistor type outputs capable of directly driving relays With reference to the table below digout on pins 2 5 are with respect to pin 1 and digout on pins 5 8 are with respect to pin 6 Connections are via a 10 pin plug supplied with the unit Pin no Signalname_ Pin no Signal name 1 ground ground 2 digout 1 digout 5 3 digout 2 digout 6 4 digout 3 digout 7 5 digout 4 digout 8 Diode Fal Pl zog digout Cail 48 i 5 24 en PSU Ve common Series 425 digout2 bmp A typical digital output circuit PART Ill CONNECTING THE SERIES 420SB TO YOUR COMPUTER IMPORTANT NOTE please refer to PART IV SPECIFICATIONS if you do not intend using the cable supplied NOTE Pins 6 and 8 pin
12. s 7 and 8 of the D type plug are no longer linked for RS232 or RS422 operation Units are factory set for the required protocol However cables with links fitted can still be used Pin configuration details are retained for reference Page 7 or 16 425SB Hardware User Manual March 2002 Iss 1 The SERIES 420SB is supplied with a 2 metre length cable which meets the requirements of RS232 fitted with 9 pin D type plug and socket The system requires transmit Tx receive Rx and ground connections for most applications so these are the only signal connections made in both plug and socket Pins 6 and 8 or pins 7 and 8 are linked depending on serial data transmission protocol Links are made in the cable plug end that is connected to the logger Cable wiring details are given below Pin Signal name Signal direction Wire 2 Tx to Computer white 3 Rx from Computer black 5 signal ground screen 6 RS422 link Linked to pin 8 7 RS423 link Linked to pin 8 hr ee Pins 1 4 and 9 are not used The SERIES 420SB has two serial port connectors SERIAL IN and SERIAL OUT As a general rule SERIAL OUT will be connected to your computer in a single unit installation Where a second unit is used it will be connected into the system by daisy chaining the SERIAL IN to the SERIAL OUT of the first unit Cable connections for daisy chaining a SERIES 420SB are given in the table below Pin Signal name Si
13. special ventilation requirements Cleaning Loggers are easy to clean Use a non abrasive or foam cleaner ANALOGUE INPUTS Direct Voltage and Current Page 12 of 16 Range Resolution Accuracy 10mV 1uV 0 02 100 mV 10 uV 0 02 1V 100 uV 0 02 10v 1 mV 0 02 4 20mA 0 01 0 02 Thermocouples Input range C Input function Resolution C Accuracy C 200 to 400 T thermocouple 0 1 0 5 100 to 200 T thermocouple 0 01 0 25 200 to 1200 K thermocouple 0 1 0 5 100 to 200 K thermocouple 0 01 0 5 100 to 1100 J thermocouple 0 1 0 5 0 to 1300 N thermocouple 0 1 0 5 100 to 1000 E thermocouple 0 1 0 5 0 to 1700 R thermocouple 1 4 0 to 1700 S thermocouple 1 4 0 to 1800 B thermocouple 1 4 425SB Hardware User Manual March 2002 Iss 1 Note accuracy includes cold junction error when using thermocouple sockets but not when using general purpose sockets PT100 100 ohms 0 C 4 wire connection Range C Resolution C Accuracy C 100 to 600 0 1 0 5 100 to 200 0 01 0 2 Pressure transducer load cell Range Resolution Accuracy 10 mV 1 uV 0 02 100 mV 10 uV 0 02 1V 100 uV 0 02 10 V 1 mV 0 02 Signal conditioning For thermocouple PT100 and pressure transducers Transducer energisation e For PT100 switched constant current of 1mA e For pressure transducer loa
14. used if a transducer connected as Figure 2 does not respond The example shows how you would connect a 2 wire transducer to the unit using an external 24V DC source external supply yve t sig 3 zig 4 4 2yvtransh bmp external Supply we Page 10 of 16 S425SB Hardware User Manual March 2002 Iss 1 PART IV SPECIFICATIONS DATA LOGGER Construction The SERIES 420SB data logger is constructed as a metal box formed by 2 U shaped sections A bottom box section forms the mount for printed circuit boards PCB All components are mounted on the PCBs A top box section locates over the bottom section allowing access to connectors and switches and is secured into position using 4 M3x6mm screws Four rubber feet are screwed to the bottom Dimensions 269mm long 150mm wide 95mm deep including feet Connectors e 16 inputs combinations of thermocouple and general purpose connectors e 2RS423 ports Page 11 of 16 S425SB Hardware User Manual March 2002 Iss 1 1 digital input 1 digital output 1 analogue output option 1 power input 1 frequency input e o o Switches e 4 unit configuration e 2 baud rate Mounting and Ventilation To mount a logger remove rubber feet and use the same screw locations Maximum screw length penetration is M3x4mm It is dangerous to exceed the recommended penetration length as damage to internal components could occur The logger requires no
15. you can use the manual as a handy reference When you need help with a specific problem turn to the appropriate area of the manual that describes that part of the system To give you an idea of the manual s layout here is a description of each part of the manual e Part describes the hardware for both the SERIES 420SB and the computer system e Part II describes system hardware configuration and tells you how to connect the different types of sensors e Part III tells you how to connect the SERIES 420SB unit to your computer e Part IV provides specifications for the SERIES 420SB equipment Page 3 of 16 S425SB Hardware User Manual March 2002 Iss 1 PART I INTRODUCTION TO SERIES 420SB OVERVIEW Welcome to the SERIES 420SB Data Acquisition Unit which provides 16 general purpose analogue inputs 8 digital inputs and 8 digital outputs The units operate in conjunction with a wide variety of bespoke or SCADA computer based software packages The SERIES 420SB is connected to a compatible computer system which provides the SDADA software operating environment working under Windows 3 x Windows for Work Groups Win 95 98 and Windows NT The compact hardware provides thermocouple and general purpose analogue inputs digital inputs and digital outputs Connection to a computer using the supplied cable is made via an RS422 423 serial link An additional RS422 423 connector allows you to daisy chain two SERIES 420SBs together if more
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