S-940 User Manual
Contents
1. Connector Descriptions and Output Specifications The connector designations are shown in the diagram and photograph below Their descriptions and use are detailed in the following table GND 485A 24VDC Standby 12V out 485 B Diag High Em 4 20mA Low GND 5 pin and 8 pin connectors as viewed from the outside of the box Control 5 pin connector Connect input power 16 28VDC This is set to GND when sensor fails else floating The output is an open collector current sink The maximum rating of the transistor output is 24VDC at 150mA Ground The output is an open collector current sink The maximum rating of the transistor output is 24VDC at 150mA Should you connect a relay coil or any other inductive load to the transistor outputs a back EMF suppression diode must be fitted across the load STDBY If set to GND externally it puts the sensor head into Standby mode and the S940 945 into Sleep mode If set to GND again it will return to normal operation 8 pin connector This is set to GND when low alarm point is reached else floating Use the Configuration Program to setup The output is an open collector current sink The maximum rating of the transistor output is 24VDC at 150mA Should you connect a relay coil or any other Inductive load to the transistor outputs a back EMF suppression diode must be fitted across the load This is set to GND when high alarm point is reached else floating Use the Configuration Prog2. TEMP 4 bytes IEEE754 floating point data measured temperature value of S945 unit RH 4 bytes IEEE754 floating point data measured relative humidity value of 945 unit for S940 the command will be no reply at all Section 3 Broadcast commands are a set of special commands of the network system Every unit that receives the commands on the net work performs the action They are not ID specific BROADCAST com mand indicator can be considered as NETWORK_ID These commands send out by network master and that don t need reply at all BROADCAST is a 1 byte special S940 S945 ID that is zero 01 Broadcast S940 S945 standing by command this command will set all sensor head that connected to the network go to stand by state The command generates no reply To check whether a 940 945 unit has performed the com mand the network master should check STATUS2 s STAND_BY bit 40 QClOQUAL BASE STANDBY BROADCAST EMPTY CHECKSUM BROADCAST 1 byte broad cast indicator see section 4 for its value 02 Broadcast S940 S945 reset command it will reset whole network sensor heads that connected to The command generates no reply To check whether a 940 945 unit has performed the command the network master should check STATUS2 s STAND BY bit BASE RESET BROADCAST EMPTY CHECKSUM BROADCAST 1 byte broad cast indicator see section 4 for its value Section 4 Protocol commands value and descriptions BASE 0x55 command head
3. connector 2 Use twisted pair cable to connect the RS485 lines on the 8 pin connector to the RS485 hub bus or converter 3 Power on the monitor and run the communication software either Aeroqual Networking Software or your own software on your computer or PLC Network Settings If the S940 S945 is to be used as part of a daisy chained RS485 net work a number of settings need to be adjusted 1 Jumper settings The termination resistors need to be set correctly to ensure the network communication is stable The jumpers JP1 JP2 JP3 are to install termi nation resistors on the RS485 communication lines Remove the jumpers J1 J2 J3 for all S940 945 units in a chain except the last S940 945 unit in the network chain If there is only one unit then set the jumpers in place To access these jumpers remove the sensor head and then remove the four screws on the mounting plate The PC board as shown below is located on the under side of the fixing plate 2 ID Settings The ID of the monitors on the network need to be unique so they can be distinguished on the RS485 network The ID of the unit is factory set as 1 and therefore it will need to be changed Use the Configuration program to change the IDs see the section on Configuring the moni tors p22 21 EBEN QelOQUAL Jumpers Configuring the S940 S945 The Series 940 945 alarm and 4 20 mA output scale settings can be modified using a computer and the supplied
4. 1 b0 0 means sensor aging for low Ozone sensor only 41 QeClrOQUAL BROADCAST 0x00 broadcast command indicator like a special S940 S945 ID reserved for information broadcast PARAMETERS UPLOAD 0x19 command to upload configure settings to S940 S945 PARAMETERS DOWNLOAD 0x18 command to download configure settings from S940 S945 EMPTY 0x00 no meanings at all reserved space RESERVED can be any value no meanings at all CHECKSUM data stream check sum used to verify the command data stream information lost or noise It makes the data stream total byte sum to zero NETWORK ID range 0x00 OxFF 0x00 is reserved for broadcast command 0x01 will be the default ID when S940 S945 been programmed STATUS1 1 Byte SensorStatusO bO V bi 0 b0 0 sensor is normal SensorStatusi bi bi 0 b0 1 sensor failure no gas re porting bi 1 b0 0 means sensor aging for low Ozone sensor only FAN STATUS b2 reserved UNIT UNSTABLE FLAG b3 1 sensor head is at setting up stage not stable yet RESERVED b4 reserved RESERVED b5 reserved SensorResetFlag b6 1 sensor head is doing reset DATA UNVALID b7 21 the data is not valid data maybe last reported reading STATUS2 1 byte not used now reserved for further developing RESERVED b0 reserved RESERVED bi reserved RESERVED b2 reserved RESERVED b3 reserved STANDBY b4 1 sensor head in stand by mode b4 0 sensor head in normal working mode RESERVED b5 reserved RESERVED b6 reserved RE
5. S900 Configuration Pro gram or using a R900 purpose made hand held communication tool For further details on the R900 contact your supplier or Aeroqual Limited technical aeroqual com To configure the S940 S945 by computer you will need an RS232 RS485 or USB RS485 converter There are many RS232 RS485 converters on the market Only certain brands will function well with Aeroqual s prod ucts Aeroqual can supply a converter R51 suitable for configuring a single monitor it is not suitable for a S940 network Converters which have been tested by Aeroqual can be purchased from Aeroqual or it s distributors or contact Aeroqual for recommended brands on techni cal aeroqual com Computer requirements CD ROM Drive RS232 port Windows OS version 95 or later 45 Mb of spare hard drive space Additional components required 24V power supply RS232 RS485 or USB RS485 converter RS485 wired S940 S945 22 e i 0 0197 Y Connecting the R51 RS 485 to RS 232 Con verter Connect to PC serial COM port or USB via R52 TD A connect to RS485B TD B connect to RS485A RS 485 to RS 232 Converter to Series 930 940 TD A connect to RS485B TD B connect to RS485A GND not required GND not required 12V not required Using a USB to RS485 converter UN M AGES gt Recommended supplier Moxa www moxa com Note Aeroqual S900 series monitors communicate via 2 wire RS485 so the converter must be config
6. alarm 2 set point value see section 4 for its data representa 39 e i 0 0197 Y tion DEFINED SCALE 4 bytes user defined max output current output value CONTROL HIGH 4 bytes control high set point value see section 4 for its data representation CONTROL LOW 4 bytes control low set point value see section 4 for its data representation ALARM STATUS 1 byte alarm state settings see section 4 for details 09 Specific S940 S945 base unit version number request command and reply PC or other devices can request the base unit version information Command BASE BASE VERSION NETWORK ID EMPTY CHECKSUM Reply SENSOR BASE VERSION NETWORK ID VERSION NUM SEN SOR COUNT RESERVED RESERVED RESERVED RESERVED RESERVED RE SERVED RESERVED RESERVED RESERVED CHECKSUM VERSION NUM 1 byte the version number of the S940 S945 unit SENSOR COUNT 1 byte actually used to specify its S940 or S945 if it s 0x01 that is S940 no temperature and humidity sensor connected if it s 0x03 that is S945 there is a temperature and humidity sensor connected 10 Temperature and relative humidity data request command S945 only The command asks for the temperature and humidity data that a specific S945 unit currently holds The S945 unit responds with two values respectively Command BASE TEMP RH DATA NETWORK ID EMPTY CHECKSUM Reply SENSOR TEMP RH DATA NETWORK ID TEMP RH RESERVED STATUS1 STATUS2 CHECKSUM
7. i 0 0197 Y Appendix A Photographs Power Outputs Inputs Jumpers Sampling Pump Ingress Protection Connectors ID RS485 protocol Appendix C Enclosure Mounting Operating temperature Operating relative humidity Enclosure size Sample Flow rate Photographs ybleH En S940 S945 Specification and 24VDC 500mA range 22 26 VDC 4 20 mA opto isolated 12 24 V 30 VDC max maximum loop resistance 500 Q at 24V 4 x Relay outputs Hi alarm Low alarm Control Diagnostics RS485 two wire Standby toggle J1 J2 J3 termination resistors for RS485 network 12V BLDC Rotary pump or 5V BLDC diaphragm pump IP40 equivalent Screw 1 Default User configurable from 1 to 255 Aeroqual proprietary protocol see Polycarbonate Screw fix 5 C and 40 C 23 F and 120 F 5 to 95 non condensating 230mm x 140mm x 95mm LxWxH 0 2 0 1 LPM The S945 has a Temperature and RH probe located here External view of S940 with display 32 QClrOQUAL Internal view of S940 with display Note internal filters may vary 33 e i 0 0197 Y Appendix B Removing and Replacing the Sensor Head Note The S945 has a Temperature and RH probe located here 1 Undo the four lid screws remove lid and view the interior of the enclosure as shown above 2 Unscrew the inlet amp outlet nozzles A amp B Note Turn the plastic nut clockwise Remember the small elbows form part of the s
8. packed to enable it to achieve maximum performance Standby If the environment from which the monitor is sampling is subject to liquid sprays or misting eg cleaning or decontamination regimes it is recommended that the unit be put into STBY mode which turns off the internal pump and stops contaminants entering the unit 13 QClrOQUAL Installing the inlet Filter and Tubing It is recommended that an inlet filter is installed at the entrance to any tubing to prevent contamination of the inlet tubing Install inlet filter as shown The filter should be a 5 micron pore size PVDF or PTFE mem brane filter diameter at least 30 mm hydrophobic Sample tubing should be a maximum of 5 m in length and be inert PTFE FEP or PFA tubing 14 e v 0 0197 Y Operating the LED Display if 4 20 mA loop is not being used LED display models are designed to operate in conjunction with the 4 20mA circuit If the 4 20mA output is not being used the display can still be enabled by connecting two wire loops see diagram be low on the 8 pin connector between a the positive 4 20mA pin to the 12v output pin and b the negative 4 20mA pin to GND ground 485 B j 4 20mA and 12V High Control GND 24VDC POWER SUPPLY e i 0 0197 Y Operation as a relay controller The S940 S945 can be used as a simple relay controller using the alarm or control outputs which are open collector current sinks They are set
9. to read correctly e vi 0 0197 Y Display oscillates between Sensor head not fitted min and max Sensor failure when new sensor Sensor showing high baseline reading under zero gas conditions Sensor showing higher than expected reading in the presence of sensor gas correctly Insufficient warm up Air contaminated Sensor damaged Background gas level higher than normal Interferent gas present Sensor zero drift Sensor damaged Flow incorrect Zero calibration incorrect Span calibration incorrect Sensor correct Interferent gas present Sensor calibration lost Flow incorrect Insert sensor head cor rectly Run the sensor for 24 48 hours Move the sensor to cleaner environment and check reading Replace sensor Move sensor to clean air and recheck baseline Move sensor to clean air and recheck baseline Re zero sensor in a clean stable background Replace sensor Measure sample flow and compare with specifica tion If incorrect check for leaks and or replace pump Zero calibrate sensor Span calibrate sensor Check calibration of gas generator Move sensor to clean air and check reading upon exposure to known gas concentration Replace refurbish sensor Measure sample flow and compare with specifica tion If incorrect check for leaks and or replace pump 29 QClrOQUAL Sensor output noisy Sensor showing lower than expected reading in the presence o
10. D NETWORK ID OTHERS CHECKSUM BASE information request data stream header COMMAND 1 byte network unit action command NETWORK ID 1 byte S940 S945 network ID OTHERS may used to extend functions later it can be left as empty for now CHECKSUM makes the data stream total sum byte value to zero 02 S940 S945 unit basic reply command format will be a 15 bytes stream see Section 2 for details SENSOR COMMAND NETWORK ID DATA1 4 bytes DATA2 4 bytes RE SERVED STATUS1 STATUS2 CHECKSUM Section 2 S940 S945 Network ID specified commands These com mands generate a response by a specified S940 S945 unit Every com mand needs a corresponding reply 01 Gas Data request command The command asks for the gas data that a specific S940 S945 unit currently holds The S940 S945 unit responds with an gas value The gas data validity depends on the DATA UNVALID bit of STATUS1 flag please see Section 4 for details Command BASE GAS CONC DATA NETWORK ID EMPTY CHECKSUM Reply SENSOR GAS CONC DATA NETWORK ID DATA1 TEMP RH RE SERVED STATUS1 STATUS2 CHECKSUM DATA1 4 bytes IEEE754 floating point data measured gas value if DATA UNVALID bit of STATUS1 flag is 1 then it will be last byte measured value otherwise it s new measured value TEMP 2 bytes int value its actual value equals the int value divided by 10 TEMP 10 for its real temperature value of S945 unit RH 2 bytes int value its actua
11. D Display if 4 20 mA loop is not being used 14 Operation as a relay controller 15 Operation as a 4 20 mA transmitter 17 4 20 mA wiring diagram for Loop and Display with opto isolation 18 420 mA wiring diagram for Loop and Display no opto isolation 19 Operation as a RS485 Transmitter 20 Network Settings 21 Configuring the S940 S945 21 Connecting the R51 RS 485 to RS 232 Converter 22 Installing Moxa RS485 to USB Converter 23 Procedure 23 Care and Maintenance 26 Troubleshooting 27 Diagnostics 30 Appendix A S940 S945 Specification and Photographs 31 Photographs 31 External view of S940 with display 32 Appendix B Removing the sensor head 33 Appendix C Sensor Head Specifications 34 Appendix D Series 940 and 945 RS485 Protocol 36 APPENDIX E Calibrating the LED display 38 e i 0 0197 Y Foreword Copyright Aeroqual Limited All rights reserved Reproduction transfer distribu tion or storage of part or all of the contents of this document in any form without the prior written permission of Aeroqual Limited is prohibited Aeroqual and Aeroqual Limited Making the Invisible Visible are registered trademarks of Aeroqual Limited Other product and company names mentioned herein may also be trademarks or trade names Aeroqual operates a policy of continuous development Aeroqual reserves the right to make changes and improvements to any of the products described in this document without prior notice Under no circumstances sh
12. LAY TYPE NAME LENGTH SENSOR NAME RESERVED CHECKSUM VERSION NUM 1 byte the version number of sensor head plugged in the S940 S945 unit Real version number is the value divided by 10 DISPLAY TYPE 1 byte the decimal value display type different gas sensor head are different see sensor head specifications for details NAME LENGTH 1 byte the sensor head name length SENSOR NAME 7 bytes max valid length depends on NAME LENGTH value the sensor head name ASCII code that connected to 940 S945 unit 05 Modify S940 S945 unit network ID command that can change current S940 S945 unit network ID Command BASE CHANGE NETWORK ID OLD ID NEW ID CHECKSUM Reply SENSOR CHANGE NETWORK ID NEW ID DATA1 DATA2 RESERVED STATUS1 STATUS2 CHECKSUM CHANGE_NETWORK_ID 1 byte command see section 4 for details 38 e vi 0 0197 Y OLD ID the S940 S945 unit old network ID 1 byte NEW ID the S940 S945 unit new network ID 1 byte 06 Specific S940 S945 connected sensor gas unit ppm to mg m3 convert factor and analogue current max output scale factor value request command Command BASE FACTOR REQUEST NETWORK ID EMPTY CHECKSUM Reply SENSOR FACTOR REQUEST NETWORK ID DATA1 DATA2 RESERVED STATUS1 STATUS2 CHECKSUM DATA 4 bytes gas unit ppm to mg m3 convert factor floating point value DATA2 4 bytes default S940 S945 4 20mA current output max scale factor floating point value See se
13. QClOQUAL ET Series 940 amp 945 3 g Transmitter Controller A User Guide e i 0 0197 Y Quick Start Guide 1 Unpack monitor and check supplied components are correct 2 Connect 24 VDC power supply to 5 pin connector pins 3 Configure monitor Using computer e Attach twisted pair cable to RS485 pins on 8 pin connector e Connect twisted pair to RS485 converter con nected to computer Load and run Configuration software Turn on monitor Configure monitor setpoints ID etc Using R900 e Connect R900 to monitor and follow instructions in R900 manual 4 Connect Outputs A If RS485 see Operation as RS485 Transmitter B If 4 20 mA see Operation as 4 20mA Controller C If Relay controller see Operation as Relay Control ler D 1f Display is fitted and the 4 20 mA loop is not being used see Operating the LED Display if 4 20 mA loop is not being used 5 Connect inlet filter and sample tubing if required 6 Power on and allow monitor to warm up for a few hours to reach optimum operation e i 0 0197 Y Table of Contents Quick Start Guide 1 Table of Contents 2 Foreword 3 Statement of Compliance 4 Warranty 5 For Your Safety 7 WARNING 7 Technical Support 7 Description 8 Components Supplied 8 Components not supplied but required 8 Connector Descriptions and Output Specifications 11 Operation 12 Warming up 12 Standby 12 Installing the inlet Filter and Tubing 13 Operating the LE
14. RESERVED STATUS1 STATUS2 CHECKSUM ALARM1 4 bytes alarm level 1 set point value see section 4 for its data repre sentation ALARM2 4 bytes alarm level 2 set point value see section 4 for its data repre sentation DEFINED SCALE 4 bytes user defined max output scale value CONTROL HIGH 4 bytes control high set point value see section 4 for its data representation CONTROL LOW 4 bytes control low set point value see section 4 for its data representation ALARM STATUS 1 byte alarm state settings see section 4 for details Reply just used for confirm uploading successfully 08 Specific S940 S945 unit configure settings download command total 25 bytes stream Command BASE PARAMETERS DOWNLOAD NETWORK ID EMPTY CHECK SUM Reply SENSOR PARAMETERS DOWNLOAD NETWORK ID ALARM1 ALARM2 DEFINED SCALE CONTROL HIGH CONTROL LOW ALARM STATUS CHECK SUM ALARM 4 bytes alarm 1 set point value see section 4 for its data representa tion ALARM2 4 bytes alarm 2 set point value see section 4 for its data representa tion DEFINED SCALE 4 bytes user defined max output current output value CONTROL HIGH 4 bytes control high set point value see section 4 for its data representation CONTROL LOW 4 bytes control low set point value see section 4 for its data representation ALARM STATUS 1 byte alarm state settings see section 4 for details 44 QClrOQUAL 09 Specific S940 S945 base unit version nu
15. SERVED b7 reserved ALARM STATUS 1 byte used for alarm status setting Alarm Enable b0 0 S940 S945 alarm enabled b0 1 S940 S945 alarm disabled Alarm2 Triger bi 0 S940 S945 alarm 2 triggered when reading ex ceed alarm 2 bi 1 S940 S945 alarm 2 rigged when reading below alarm 2 Define Ouput Scale b2 0 use sensor head default current output value b2 1 user defined current output value 42 QClOQUAL RESERVED b3 reserved RESERVED b4 reserved RESERVED b5 reserved RESERVED b6 reserved RESERVED b7 reserved The following data values use IEEE754 32 bits floating point little endian repre sentation These data are DATA1 DATA2 ALARM1 ALARM2 DEFINED SCALE CON TROL HIGH CONTROL LOW etc Section 5 Data transfer mechanism Floating point data 4 bytes send sequence is low byte first high byte last such as section 4 s data DATA1 ALARM1 ALARM2 etc 2 Broadcast command when network master broadcast a command to RS485 bus every unit connected to the bus has to perform the action immediately with out reply Whether the command has been performed or not can be tested using a specific sensor command to poll an individual unit If some sensor heads do not perform the action the network master needs to rebroadcast the command again 3 Specific unit sensor measured gas concentration request Once a sensor head measures a new concentration it will set STATUS1 b7 to zero indicating the value is valid However wh
16. all Aeroqual be responsible for any loss of data or income or any special incidental consequential or indirect damages howsoever caused The contents of this document are provided as is Except as required by appli cable law no warranties of any kind either express or implied including but not limited to the implied warranties of merchantability and fitness for a particular purpose are made in relation to the accuracy reliability or contents of this docu ment Aeroqual reserves the right to revise this document or withdraw it at any time without prior notice The availability of particular products may vary by region Please check with the Aeroqual dealer nearest to you Aeroqual Limited 2009 All rights reserved 03 02 09 CE Fe 109 Valley Road Mount Eden Auckland New Zealand phone 64 9 623 3013 fax 64 9 623 3012 email technical aeroqual com web www aeroqual com QClOQUAL Statement of Compliance 1 The Aeroqual Series 940 945 Transmitter Controller complies with EN 50082 1 1997 2 The Aeroqual Series 940 945 Transmitter Controller complies with EN 50081 1 1992 3 The Aeroqual Series 940 945 Transmitter Controller comply with Part 15 of the FCC Rules Operation is subject to the following two conditions i these devices may not cause harmful interference and ii these devices must accept any interference received including inter ference that may cause undesired operation NOTE This equipment has b
17. d If a different sensor needs to be installed or the fullscale needs to be changed then the display may need to be calibrated This requires installing and or selecting the correct shunt resistor selecting the position of the decimal point and setting the zero trim pot The adaptor board is based on the DATEL recommended circuit shown below R2 is the zero trim pot R1 is the shunt resistor Aeroqual usually installs 2 or 3 shunt resistors which can be switched in and out of the circuit in parallel using dipswitches to enable the correct resistor value to be achieved for the application The value of R1 is calculated by R1 Vfulscale I fulscale For example For a 0 2 V display and a desired reading of 0 5 at 20 ma then the value of the R1 shunt resistor should be R1 0 5 0 020 0 004 A 0 5 0 016 31 25 ohms Figure 1 DATEL recommended circuit for converting voltameter to 4 20 mA current meter DMS 30PC 1 c BERE EINEN 9 1 3 1 23V 5V SUP 5V RET REF REF OUT REF IN 46 e i 0 0197 Y Figure 2 Aeroqual adaptor board connections full shunt resistors in dip switch for se scale parallel lecting resistors trim pot loop loop GND 5V in out Zero trim pot Decimal place dip switch 47
18. dversely affect the supplied sensor In general the 940 945 should never be exposed to steam fumes water or chemical spray aggressive solvents high condensing humidity cooking vapors aromas paint fumes high levels of dust 10 qeroQUAL Permanent Controller Placement The S940 945 has been designed to measure the ambient gas concentration For indoor local area monitoring attach the controller to an inert surface For leak detection mount the unit as close as possible to potential gas leaks Ensure that the controller is protected from excessive water splash ing dust vibration excessive heat or cold excessive swings in humidity and gas concentrations outside the range of the spe cific sensor head Warm up It is recommended that the sensor head for the Series 940 945 transmitter controller is run for up to 24 hours prior to use as a control or alarm function if it has been switched off for more than 7 days This will remove any surface contamination on the sensor that may influence the accuracy of the sensor Calibration The sensor head is calibrated prior to delivery Environmental conditions such as dust high humidity vibration chemicals and heat or cold as well as high concentrations of gases may degrade the sensor performance and shorten the sensor life Please ask your local dealer or contact Aeroqual at technical aeroqual com about your application if you are in doubt e i 0 0197 Y
19. e the product in accordance with the terms and conditions stipulated herein QClrOQUAL Conditions The warranty is valid only if the original receipt issued to the original purchaser by the dealer specifying the date of purchase is presented with the product to be re paired or replaced Aeroqual reserves the right to refuse warranty service if this infor mation has been removed or changed after the original purchase of the product from the dealer If Aeroqual repairs or replaces the product the repaired or replaced product shall be warranted for the remaining time of the original warranty period or for ninety 90 days from the date of repair whichever is longer Repair or replacement may be via functionally equivalent reconditioned units Replaced faulty parts or components will become the property of Aeroqual This warranty does not cover any failure of the product due to normal wear and tear damage misuse including but not limited to use in any other than the normal and customary manner in accordance with Aeroqual s user guide for use faulty installa tion calibration and maintenance of the product accident modification or adjust ment events beyond human control improper ventilation and damage resulting from liquid or corrosion This warranty does not cover product failures due to repairs modifications or im proper service performed by a non Aeroqual authorized service workshop or opening of the product by non Aeroqua
20. e load STBY STBY is a hardware toggle switch If it is briefly pulsed about 50ms to GND it puts the sensor head into Standby mode and the S940 into Sleep mode If pulsed again to GND it will return to normal operation This can be used to protect the sensor during process room clean ing and or to reduce power and extend sensor life when the sensor is not needed Operation as a 4 20 mA transmitter QClrOQUAL The Series 940 945 can be connected to a PLC or current sensing device via the 4 20 mA output to provide concentration information The out put is linearly proportional to concentration The full scale 20 mA value is factory set but can also be user configured with the Configuration software supplied If the sensor fails the output will be 20 mA It is also recommended that the DIAG diagnostic output be used to monitor for fault conditions The 4 20 mA output loop is opto isolated from the Series 940 945 unit and it is recommended that it be powered by a separate power supply with a voltage in the range 12 24 V applied with the correct polarity as labeled This will produce the most reliable connection method If opto isolation is not important then the 4 20 mA loop may be powered by the same power supply as the unit LED display models are designed to operate in conjunction with the 4 20mA circuit and the loop needs to be powered correctly for the display to function correctly Procedure 1 Connect the 4 20 mA loop on
21. een tested and found to comply with the limits for a Class B digital device pursuant to Part 15 of the FCC Rules e i 0 0197 Y Warranty Thank you for purchasing this Aeroqual product To get maxi mum use of the features of your new product we recommend that you follow a few simple steps Read the guidelines for safe and efficient use Read all the terms and conditions of your Aeroqual Warranty Save your original receipt You will need it for warranty repair claims Should your Aeroqual product need war ranty service you should return it to the dealer from whom it was purchased or contact Aeroqual Our Warranty Aeroqual warrants this product to be free from defects in ma terial and workmanship at the time of its original purchase by a consumer and for a subsequent period as stated in the following table Series 940 945 Transmitter Controller One year from the date of purchase Sensor heads all gases Six months from the date of purchase Other Accessories One year from the date of purchase This warranty is expressly limited to the original owner who pur chases the equipment directly from Aeroqual or from an au thorized Aeroqual dealer What we will do If during the warranty period this product fails to operate un der normal use and service due to improper materials or work manship Aeroqual subsidiaries authorized distributors or author ized service partners will at their option either repair or replac
22. en the new data has been sent out the STATUS1 b7 DATA UNVALID bit will set to 1 indicating the data not valid 4 Timing issue VERY IMPOTANT The master request command frequency can t be less than 1 second per command otherwise the network will be unsta ble Section 6 RS485 communication port settings Baud rate 4800 Data bits 8 Stop bits 1 Parity none Flow control none OLD ID the S940 S945 unit old network ID 1 byte NEW ID the S940 S945 unit new network ID 1 byte 06 Specific S940 S945 connected sensor gas unit ppm to mg m3 convert factor and analogue current max output scale factor value request command Command BASE FACTOR REQUEST NETWORK ID EMPTY CHECKSUM 43 QeClrOQUAL Reply SENSOR FACTOR_REQUEST NETWORK_ID DATA1 DATA2 RESERVED STATUS1 STATUS2 CHECKSUM DATA 4 bytes gas unit ppm to mg m3 convert factor floating point value DATA2 4 bytes default S940 S945 4 20mA current output max scale factor floating point value See sensor head spec for details 07 Specified S940 S945 unit configure settings upload command which set the S940 S945 unit alarm 1 alarm 2 defined output scale and alarm enable settings Total 25 bytes data stream Command BASE PARAMETERS UPLOAD NETWORK ID EMPTY CHECKSUM Parameters BASE PARAMETERS UPLOAD NETWORK ID ALARM1 ALARM2 DEFINED SCALE CONTROL HIGH CONTROL LOW ALARM STATUS CHECK SUM Reply SENSOR PARAMETERS UPLOAD DATA1 DATA2
23. ensor head 3 Now replace the sensor head keyed to fit one way only tighten the inlet and outlet nozzles A and B Note Turn the plastic nut anti clockwise 4 Replace the lid and tighten the four lid screws 34 QClrOQUAL Appendix C Sensor Head Specifications j Re Operational Range Range Resolu sponse Analogue Sensor LDL Accuracy i output 90 Ammonia bs x5 ppm 0 100 qi pom idi TUM SEATS Mid Ammonia leak 0 1000 ppm ini Carbon monox a 5 ide 0 100 x5 ppm 0 1 ppm 150s 0 C to 40 C 5 to 95 100ppm 0 100 ppm Carbon monox ide 2000 1 ppm lt 10 1 ppm 150s 0 C to 40 C 5 to 95 1000ppm 008 0 1000 ppm Carbon dioxide x 40 pn 0 2000 ppm 3000 Eg 10 ppm ES s oware to 40 C sos to 9596 ae s E ppm i0 ppm 0to40 c 5to95 5000ppm 0 01 60s 0 to 40 C 5 to 95 2000 2 m ENZH 1em ppm eos s awe to 40 C sus to 9596 02pm 0 00 Hyd 25 5000 pp soo ai Beles ae E Hydrogen sulphide 0 10 25 10 ppb lt 0 5 ppm 0 01 ppm 60s 20 C to 40 C 5to 9596 10ppm 0 10 ppm Hydrogen 0 05 su Pom ES h J i 209 o has 0 50 100 ppm lt 2 ppm 10 50 0 1 ppm 60s 20 C to 40 C 5to 9596 50ppm ppm Methane 0 RADONO PR ii p ase ee peepee Ozone 0 0 001 lt 0 008 ppm 0 Ozone 0 0 1 ppm 0 001 H 0 05 ppm m 1pPb 41604 0 1 0 5 pora 60s 5 C to 40 C 5to 9596 ppm EY lt 10 0 5 2 ppm i 0 5 20 ppm a 10 ppb lt 15 2 20 ppm 0 01 ppm 5 C
24. er used for network master to S940 S945 SENSOR OxAA reply header used for S940 S945 to network master STANDBY OxFD command used to set sensor head standing by mode RESET 0x07 command to reset sensor head to normal working state GAS CONC DATA 0x10 command to request report measured gas con centration value TEMP RH DATA 0x20 command to request temperature and humidity values BASE VERSION 0xF9 command to request report S940 S945 base unit version number SENSOR VERSION OxFB command to request report sensor head version num ber FACTOR REQUEST 0x2A command to request report sensor head concen tration ppm to mg m3 conversion factor and max current output scale factor BROADCAST 0x00 broadcast command indicator like a special S940 S945 ID reserved for information broadcast PARAMETERS UPLOAD 0x19 command to upload configure settings to S940 S945 PARAMETERS DOWNLOAD 0x18 command to download configure settings from S940 S945 EMPTY 0x00 no meanings at all reserved space RESERVED can be any value no meanings at all CHECKSUM data stream check sum used to verify the command data stream information lost or noise It makes the data stream total byte sum to zero NETWORK ID range 0x00 OxFF 0x00 is reserved for broadcast command 0x01 will be the default ID when S940 S945 been programmed STATUS1 1 Byte SensorStatusO bO V bi 0 b0 0 sensor is normal SensorStatusi bi bi 0 b0 1 sensor failure no gas re porting bi
25. exclusions may not apply to you This warranty gives you specific legal rights and you may also have other rights which may vary from coun try to country e i 0 0197 Y For Your Safety Read these simple guidelines Ignoring these guidelines may be hazardous USE SENSIBLY Use only as per this user guide USE AEROQUAL APPROVED SERVICE Only approved service personnel must work on this product ACCESSORIES Use only approved accessories Do not connect incompatible products CONNECTING TO OTHER DEVICES When connecting to any other device read the appropriate user guide for detailed safety instructions Do not connect incompatible products HAZARDOUS ENVIRONMENTS Do not use the Gas Sensors in or near volatile fuel or chemicals HEALTH AND SAFETY IN THE WORKPLACE The Aeroqual Series 940 945 Transmitter Controller and Sensor Heads are used to monitor ambient gas concentrations Aeroqual does not guarantee user safety In hazardous environments an appropriate Health and Safety plan should be in place WARNING Do not expose the monitor to gas concentrations outside the range of the specific sensor head Do not switch the monitor on before reading the User Guide Do not open the product enclosure or attempt to remove the sen sor head while the unit is powered up Technical Support Technical information service and spare parts are available through your distributor In addition world wide technical support is availab
26. f sensor gas 30 S940 945 power supply Install unregulated Local air flow too high Environmental conditions fluctuating Pump not working cor rectly Zero calibration incorrect Span calibration incorrect Sensor correct Sensor inlet contaminated Interferent gas present Gas reactive and decom posing before detection Sensor calibration lost Flow incorrect regulated power supply Reduce air flow Reduce fluctuations Replace pump Zero calibrate sensor Span calibrate sensor Check calibration of gas generator Clean sensor inlet filter and mesh Move sensor to clean air and check reading upon exposure to known gas concentration Move the monitor closer to the source of the gas Replace refurbish sensor Measure sample flow and compare with specifica tion If incorrect check for leaks and or replace pump QClOQUAL Diagnostics The S940 945 has inbuilt diagnostics to detect sensor faults If the sen sor fails it can be easily replaced by simply removing and installing a new one see sensor manual for details The failed sensor can be sent back to Aeroqual for refurbishment or disposal Table of fault condition diagnostics scription put No fault valid gas reading Statusi 0x00 Sensor failed last valid gas read ing Status1 0x01 fault Sensor not fitted correctly Sensor aging 20 mA last i a read fault T 0x02 Oscillates be no reply tween E dn 20 3l e
27. he unit s current values 7 Modify settings 8 Click Upload to upload the settings to the S940 945 9 Click Exit 10 Power down the S940 945 and install 24 QClrOQUAL Gao 700 Lerner bum 14 2181 x Syst Dort ades 5 20 m oetprat scale sosy dsk Dto D5 pem C Ust defies ntu pent Dormon Ue Port ID Be Click on Port menu and select Change port ID to change ID to your requirement in the range 1 to 255 Caution if you are setting up a network please ensure each unit has a unique ID otherwise there will be conflicts and data loss Alarms High alarm and low alarm setpoints can be set by clicking on the appro priate window and entering the required activation setpoint Please note High alarm setpoint must be greater than low alarm setpoint The low alarm trigger determines whether low alarm is activated by being above or below the setpoint Click mouse on the button to select The Alarms can be enabled or disabled by clicking on the button along side Enable or Disable respectively Control The control output is triggered according to the band set by the Control high and Control low values Control high must be greater than Control low The action of this output is designed to enable control of an ozone generator The Control output will be on when the concentration is rising in the range from below Control low until it hits Control high when it turns off It remains off unt
28. il the concentration falls below Control low 4 20 mA output scale QClOQUAL This sets the gas concentration scale that corresponds to 4 20 mA Each sensor head type has a default setting but the user can modify this by clicking the user define button and entering the required value that corresponds to 20 mA NOTE The LED display is calibrated for the default settings only and will not operate correctly if the default range is altered if you are in any way uncertain of this please seek technical assistance from Aero qual Upload Clicking this button uploads the settings to the S940 945 Download Clicking this button downloads the settings from the S940 or S945 Use this function to check the settings are correct 26 QClrOQUAL Care and Maintenance Your Aeroqual S940 945 is a product of superior design and quality and should be treated with care When using your S940 945 Keep it and all its parts and accessories out of the reach of small children Keep it dry Avoid water and or condensation as humidity and liquids containing minerals may corrode electronic circuits Do not use or store in dusty dirty areas Do not expose sensor heads to higher levels of gas than its de signed range e Only operate within its specified temperature range Avoid sud den changes in temperature will cause condensation that may damage the electronic components Do not drop knock or shake as this could lead to
29. internal dam age Do not use harsh chemicals cleaning solvents or strong deter gents for cleaning Wipe with a soft cloth slightly dampened with a mild soap and water solution 27 e i 0 0197 Y Troubleshooting Fault Description No power RS485 communications unstable 4 20 mA output failure Network unstable Display shows 1 Display shows 1 Display shows 125 28 Possible cause Lead connection broken Power supply failure S940 945 damaged RS485 RS232 adaptor faulty Connections broken ID incorrect Noise on cable Sensor head not fitted correctly 30V input exceeded ID conflict Noise on leads Jumpers set incorrectly S940 945 units too close together over range gt 20 mA reverse loop current over range loop current gt 20 mA 4 20 mA Loop not pow ered Remedy Reconnect power lead Replace 24V power sup ply Replace unit Reconfigure replace adaptor Reconnect leads Check ID use shielded twisted pair cable Insert head correctly Replace S940 945 Modify IDs so that no S940 945 units share the same ID use shielded twisted pair cable Set jumpers correctly The leads between S940 945 units should be a minimum of 30 cm in length Loop polarity is incorrect Reverse this Incorrect loop polarity can cause irreversible damage to the 930 8940 Reduce loop current Reduce loop current Power loop The display requires the loop to be powered
30. l authorized persons The warranty does not cover product failures which have been caused by use of non Aeroqual original accessories Tampering with any part of the product will void the warranty Damage to the sensors can occur through exposure to certain sensor poisons such as silicones tetraethyl lead paints and adhesives Use of Aeroqual sensors in these environments containing these materials may at the discretion of Aeroqual void the warranty on the sensor head Exposure to gas concentrations outside of the design range of a specific Aeroqual sensor head can adversely affect the calibration of that sensor head and will also void this warranty as it applies to the replacement of sen sor heads Aeroqual makes no other express warranties whether written or oral other than contained within this printed limited warranty To the fullest extent allowable by law all warranties implied by law including without limitation the implied warranties of merchantability and fitness for a particular purpose are expressly excluded and in no event shall Aeroqual be liable for incidental or consequential damages of any nature whatsoever however they arise from the purchase or use of the product and including but not limited to lost profits or business loss Some countries restrict or do not allow the exclusion or limitation of incidental or consequential damage or limitation of the duration of implied warranties so the preceding limitations or
31. l value equals the int value divided by 10 37 e i 0 0197 Y RH 10 for its real relative humidity value of S945 unit for S940 the field TEMP and RH will be always zero for firmware version 1 5 and later However for S945 firmware version 1 4 and earlier can t use this command to request temperature and humidity 02 Standby command The S940 S945 unit will set its sensor head to standby state The S940 S945 will set STANDBY bit of STATUS2 to 1 indicating it is in standby mode When the standby state has been terminated it will reset STANDBY bit of STATUS2 to 0 Command BASE STANDBY NETWORK ID EMPTY CHECKSUM Reply SENSOR STANDBY NETWORK ID DATA1 DATA2 RESERVED STATUS1 STATUS2 CHECKSUM DATA1 and DATA2 no meanings The reply just confirms that it performed action to find it check status bit 03 Specific S940 S945 reset command The command will reset the S940 S945 atany time Command BASE RESET NETWORK ID EMPTY CHECKSUM Reply SENSOR RESET NETWORK ID DATA1 DATA2 RESERVED STATUS1 STATUS2 CHECKSUM DATA1 and DATA2 no meanings RESET 1 byte reset command see section 4 for details 04 Specific S940 S945 unit connected sensor head version number request command and reply PC or other devices can request sensor head version infor mation through S940 S945 unit Command BASE SENSOR_VERSION NETWORK_ID EMPTY CHECKSUM Reply SENSOR SENSOR VERSION NETWORK ID VERSION NUM DIS P
32. le from Aeroqual Ltd Please contact Aeroqual Limited 109 Valley Road Mt Eden Auckland 1024 New Zealand Phone 64 9 623 3013 Fax 64 9 623 3012 Email technical aeroqual com QClrOQUAL Description The Aeroqual Series 940 Transmitter Controller is designed to measure and control gas concentrations and to communicate to a vari ety of hardware systems The Series 945 also measures Temperature and Relative Humidity and transmits this on the RS485 output The monitor contains a pump to provide sample flow and up to 5m of sam ple tubing can be attached to the inlet to enable remote sampling The Series 940 945 Transmitter Controller can operate as a relay con troller with user controlled setpoints as 4 20 mA gas transmitter and it can communicate via RS485 on a network Series 900 PC Networking amp Data logging Software for connecting a RS485 network of S940 S945 monitors to a computer is available as an option Please contact your distributor if you require this The S940 S945 monitors can be supplied with or without a LED display If you have ordered a monitor with display the 4 20 mA loop will need to be powered in order for the display to function correctly If the loop is not powered then the display will typically display 125 Components Supplied Series 940 or 945 base unit transmitter controller Gas Sensor Head installed Temperature and Relative Humidity Sensor S945 only User guide amp Configuration Sof
33. mber request command and reply PC or other devices can request the base unit version information Command BASE BASE VERSION NETWORK ID EMPTY CHECKSUM Reply SENSOR BASE VERSION NETWORK ID VERSION NUM SEN SOR COUNT RESERVED RESERVED RESERVED RESERVED RESERVED RE SERVED RESERVED RESERVED RESERVED CHECKSUM VERSION NUM 1 byte the version number of the S940 S945 unit SENSOR COUNT 1 byte actually used to specify its S940 or S945 if it s 0x01 that is S940 no temperature and humidity sensor connected if it s 0x03 that is S945 there is a temperature and humidity sensor connected 10 Temperature and relative humidity data request command S945 only The command asks for the temperature and humidity data that a specific S945 unit currently holds The S945 unit responds with two val ues respectively Command BASE TEMP RH DATA NETWORK ID EMPTY CHECKSUM Reply SENSOR TEMP RH DATA NETWORK ID TEMP RH RESERVED STATUS1 STATUS2 CHECKSUM TEMP 4 bytes IEEE754 floating point data measured temperature value of S945 unit RH 4 bytes IEEE754 floating point data measured relative humidity value of 945 unit for S940 the command will be no reply at all 45 e i 0 0197 Y APPENDIX D Calibrating the LED display Aeroqual uses a DATEL DMS 30PC voltmeter display fitted with an adap tor board to enable it to measure 4 20 mA The display is factory cali brated for the sensor head installe
34. nsor head spec for details 07 Specified S940 S945 unit configure settings upload command which set the S940 S945 unit alarm 1 alarm 2 defined output scale and alarm enable settings Total 25 bytes data stream Command BASE PARAMETERS UPLOAD NETWORK ID EMPTY CHECKSUM Parameters BASE PARAMETERS UPLOAD NETWORK ID ALARM1 ALARM2 DEFINED SCALE CONTROL HIGH CONTROL LOW ALARM STATUS CHECK SUM Reply SENSOR PARAMETERS UPLOAD DATA1 DATA2 RESERVED STATUS1 STATUS2 CHECKSUM ALARMI 4 bytes alarm level 1 set point value see section 4 for its data repre sentation ALARM2 4 bytes alarm level 2 set point value see section 4 for its data repre sentation DEFINED SCALE 4 bytes user defined max output scale value CONTROL HIGH 4 bytes control high set point value see section 4 for its data representation CONTROL LOW 4 bytes control low set point value see section 4 for its data representation ALARM STATUS 1 byte alarm state settings see section 4 for details Reply just used for confirm uploading successfully 08 Specific S940 S945 unit configure settings download command total 25 bytes stream Command BASE PARAMETERS DOWNLOAD NETWORK ID EMPTY CHECK SUM Reply SENSOR PARAMETERS DOWNLOAD NETWORK ID ALARM1 ALARM2 DEFINED SCALE CONTROL HIGH CONTROL LOW ALARM STATUS CHECK SUM ALARM 4 bytes alarm 1 set point value see section 4 for its data representa tion ALARM2 4 bytes
35. ram to setup The output is an open collector current sink The maximum rating of the transistor output is 24VDC at 150mA Should you connect a relay coil or any other inductive load to the transistor outputs a back EMF suppression diode must be fitted across the load 12VDC output from the S940 which can be used to power the 4 20 mA loop if opto isolation is not required However if a display is fitted and the loop output is required it is recommended that an external power supply be used otherwise problems associated with high loop impedance and or ground loops may arise Communication lines These are used to communicate with and configure the S940 945 4 20 ma loop connection The output is opto isolated and designed to be externally powered with a voltage range of 12 24V Maximum voltage is 30 VDC It may be powered using the 12 VDC output pin on the connector but this will remove the opto isolation The maximum total loop resistance should be 100 ohms at 12V and 500 ohms at 24V The output is linearly proportional to concentration The default concentration scale is dependent on the concentration range of the sensor head type The concentration scale can be defined by the user using the Configuration Program If the sensor fails the output will be 20 mA 12V out RS485 A RS485 B T QClOQUAL Photograph of S940 connectors Operation Warming up Please warm up the S940 S945 for a few hours after it is first un
36. ration software The output is an open collector current sink The maximum rating of the transistor output is 24VDC at 150mA Should you connect a relay coil or any other inductive load to the transistor outputs a back EMF suppression diode must be fitted across the load 16 QClOQUAL HiALM This is set to GND when high alarm is activated It is floating at other times Use the Configuration Program to set the Hi alarm set point The output can be used to drive an alarm relay or similar The output is an open collector current sink The maximum rating of the transis tor output is 24VDC at 150mA Should you connect a relay coil or any other inductive load to the transistor outputs a back EMF suppression diode must be fitted across the load CNTRL This is set to GND when the gas concentration is rising in the range from below Control low set point to the Control high set point at which stage it is set to floating It re mains floating until the concentration falls below the Con trol low set point at which point it is reset to ground Use the Configuration Program to set the Control set points This output can be used to control for example a gas generator or vent in a process operation The output is an open collector current sink The maximum rating of the transistor output is 24VDC at 150mA Should you connect a relay coil or any other inductive load to the transistor outputs a back EMF suppression diode must be fitted across th
37. the 8 pin connector to the power supply and current measuring device eg PLC ensuring the polarity is correct Please refer to the diagrams below Caution if the polarity is incorrect the 4 20 mA output may be permanently damaged 2 Power on the S940 945 and PLC 3 Check the PLC or current sensing device to ensure data is pre sent 4 20 mA wiring diagram for Loop and Display with opto isolation 18 e vi 0 0197 Y GN 485A 12V out 485 B GND 24VDC POWER SUPPLY 24VDC POWER SUPPLY 4 20 mA wiring diagram for Loop and Display no opto isolation QClrOQUAL 24VDC POWER SUPPLY 20 QClrOQUAL Operation as a RS485 Transmitter The Series 940 945 unit can communicate over a RS485 bus Each monitor has an ID which can be user set via the Configuration software and up to 255 units networked together Aeroqual supplies a Configura tion program to configure the S940 S945 over the RS485 please refer to the section in the manual to learn how to do this Aeroqual can also supply Networking software to set up a RS485 network of S940 S945 units linked to a computer Alternatively the user can write their own PLC or computer software to communicate with the S940 S945 based on the protocol detailed in Appendix C Please read the section on RS485 Network Settings below to learn about setting up a network of S940 S945 Connecting via RS485 1 Connect a 24 vDC power supply to the power input on the 5 pin
38. to 40 C 5 to 95 20ppm lt 0 01 ppm 0 0 1 Nitrogen dioxide 0 ppm 0 001 0 0 2 ppm 0 200 1 ppb 1096 0 1 ppm 180s 0 C to 40 C 30 to 70 0 2ppm 0 2 ppm NMHC 0 1 lt 10 0 1 25 es m oe odd ipid aes je 35 e i 0 0197 Y NMHC 0 1 31096 0 1 25 od A 0 25 ppm es ppm TIE AUS ias aud Perchloroethyl t5 pem 0 50 2 ene 0 200 250 1ppm ance 30 1 ppm 0 C to 40 C 30 to 80 0 200 ppm lt 50 200 ppm Sulphur dioxide 0 2 0 10 ppm 10 5 ppm oti oti ppm ES s acios to 40 C 51055 to 51055 E Sulphur dioxide E 100 mut emm e eon imm sons ancioae rem voc 0 1 lt 10 0 1 25 ons 9 o sin Sen ots as awewe soy sm mE 1000 1 ppm X109 1 ppm 60s 20 C to 40 C 5 to 95 0 500 eed pp o ppi fo other Gases Gases Contact Aeroqual with specific requirements for gas and concentration 36 QClOQUAL Appendix D Series 940 and 945 RS485 Pro tocol Protocol Version 1 5 Date 01 02 2005 The network communication is in master slave mode which means that a PC or other device will be the network master All information is requested by the net work master Otherwise no information is sent out by the S940 S945 network units Section 1 General description of the communication commands for command details and data representations please refer section 4 01 Information request command to S940 S945 The basic format is a 5 bytes data stream BASE COMMAN
39. to ground when activated according to their setpoints The setpoints can be configured by computer using the supplied Configura tion program or using a R900 programmer see Aeroqual for more information It is recommended that the DIAG output is always used to alert a sensor fault condition Procedure 1 Connect 24 V DC power supply to 5 pin connector 2 Connect alert relay alarm to DIAG output on 5 pin connector if required 3 Connect relay ground toggle to STDBY pin on 5 pin connector if required 4 Connect control relay to CNTL output on 5 pin connector if re quired 5 Connect relays to LoALM and or HiALM alarm outputs on 8 pin connector if required 6 Power on and test response The description and operation of the outputs are given below DIAG This output is designed to enable detection of sensor faults This is normally floating but is set to GND when the sensor fails Thus it can be considered a switch which is closed when the sensor fails This can be used to activate an alarm or relay and can also be monitored with a PLC The output is an open collector current sink The maximum rating of the transistor output is 24VDC at 150mA LoALM This is set to GND when low alarm is activated It is floating at other times Use the Configuration Program to set the Lo alarm set point The output can be used to drive an alarm relay or similar The alarm can be set to trigger above or below the set point using the configu
40. tware CD Enclosure mounting brackets 2 x Male cord connectors 8 pin amp 5 pin 1 x external filter with fittings Please check that all these components have been supplied and contact your dealer or Aeroqual on email at sales aeroqual com if any of the components are missing Components not supplied but required 24VDC 1A power supply RS485 RS232 converter or RS485 USB converter PC for configuring the monitor Multi strand twisted pair cables for connections e i 0 0197 Y Digital Communication Systems Multi Sensor Networks The Series 940 and 945 are designed to operate as part of a network system with computer based systems or PLC controllers A full range of measurement and control functionality is offered for digi tal systems Each unit can be given a unique ID required for digital networking sys tems The set up for digital network communications requires termination re sistors on the RS485 communication lines to be correctly set Section 11 See operation as a RS485 transmitter Gas Measurement Guidelines The following information is presented to help users operate their Aero qual S940 945 Transmitter Controller in the most effective and efficient manner Installation Guide The S940 945 should be installed at a location that is free from con taminants that might affect the performance of the sensor head Please contact technical aeroqual com for assistance with specific chemicals that you believe may a
41. ured to RS485 2W using software sup plied with the converter 23 e i 0 0197 Y Installation instructions for version 1 5 0 0 of the Moxa UPort1150 driver Configure a Moxa UPort 1150 for RS485 2 wire mode as follows 1 Install software from the CD provided with Moxa UPort 1150 2 Attach Moxa UPort 1150 USB device to USB port Once the drivers have been installed for the device open up the device manager found under control panel system device manager Windows Vista OR Control panel system hardware device manager Windows XP Right click on the UPort 1150 item and select properties Expand the Multi port serial adapters item Click on the Ports Configuration tab Select the appropriate COM port Click on the button labeled Port Setting Under heading Interface select the RS 485 2W entry from the drop down list 10 Click OK in this window and in the original window opened from the Device Manager in step 5 10 90 NON TR Procedure for S940 S945 operation 1 Plug in and install the USB or RS232 to RS485 converter into your computer 2 Connect the Series 940 945 RS485 port leads to the converter 3 Install the Aeroqual Series 930 935 Configuration Program on the computer if not already installed 4 Power up the Series 940 945 unit 5 Run the Aeroqual Series 940 945 Configuration Program 6 Select Unit by entering the ID of the S940 945 you wish to modify and click on Download to download t
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