Marathon F200060 Stereo System User Manual
Contents
1. T C TYPE B PROBE MV 7 BLU WHT 1850 A WHT A A PROBE MV Q BLU 1851 A RED Hi AA ELN gt BLU WHT Tan hi i 2 RX TX pe OUT 2 13 1880 UTPUT 2 TEMPERATURE 10 RX Tx Dc oT 2 14 BLU 1881 800 F 3000 4 20mA BLUWHT 114 av coy N 24 3 WS 24 VDC BLU gt D som we 16 Figure 3 Schematic Connections Grounding and Shielding To minimize the pick up of electrical noise the low voltage DC connections and the sensor input wiring should be routed away from high current power cables Where it is impractical to do this use shielded cables with the shield grounded at the Probe Transmitter enclosure ground as show above Parameter Selections The following tables list the parameters available in the Probe Transmitter Default values are also listed The default values are loaded if a reset is force in the device Changes to these parameters must be specified at the time of order Process Parameters The following table shows the process selections and other parameters that effect the process value Page 4 of 23 11 14 2006 Rev 14 Table 1 Process Parameters Parameter Name Selection Units or Options Range Default PROCESS TYPE O2 CARBON DPT O2 MV CARB PROC FACT 150 0 to 1000 DEWPT PROC FACT 150 0 to 1000 OXYGEN EXPON 0002 POWER OF TEN 0 to 31 TC TYPE B B C E J K N NNM R S T Process Type Selecting the process type determines what type of calculati2. Operational Specifications Power input Thermocouple input 21 6 to 26 4 volts DC 130mA Millivolt input Input Impedance Cold junction compensation DC outputs Isolated Isolation No Isolation Calculations Calibration Setups 11 14 2006 Thermocouple type Zero F Span F B 800 3000 C 32 3000 E 32 1300 J 32 1300 K 32 2300 N 32 2300 NNM 32 2000 R 300 3000 S 300 3000 T 32 700 Bold shows default Accuracy after linearization 1 deg F 200 to 2000 millivolts 0 1 millivolt 25 Megohm 1 deg F 0 to 20mA 6500 max 1000V DC AC Power input to signal inputs Power input to communications Thermocouple input to Millivolt input inputs must be differential Percent carbon 0 2 55 no CO compensation Dewpoint 99 F 72 8 C 212 F 100 C no hydrogen compensation Percent oxygen 0 20 9 default CAUTION DO NOT CONNECT ANY AC SOURCE OR LOAD TO INSTRUMENT CONTACTS Millivolt Null Millivolt Span Page 18 of 23 Rev 14 Thermocouple Null Thermocouple Span Cold Junction Trim Communications port RS 485 Half Duplex Only Protocol Modbus RTU Baud rates 1200 2400 4800 9600 19 2K 19 2K default Parity None Address 1 254 Address 1 is default Housing Material Polyamide PA non reinforced Inflammability Evaluation Class VO UL94 Temperature Range 40 to 100 C Dielectric Strength 600 kV cm IEC243 1 Mounting Snaps on to EN 50022 top hat T
3. 1 OFFSET Minimum source value that correlates to minimum Analog Output of 4 mA The source value is based on the selection in ASRC lower byte ANALOG OUTPUT 1 RANGE Maximum source value that correlates to maximum Analog Output of 20 mA The source value is based on the selection in ASRC lower byte where ANALOG OUTPUT 2 OFFSET Minimum source value that correlates to minimum Analog Output of 4 mA The source value is based on the selection in ASRC upper byte ANALOG OUTPUT 2 RANGE Maximum source value that correlates to maximum Analog Output of 20 mA The 11 14 2006 Page 15 of 23 Rev 14 14 15 16 17 PARAMETER SPARE SPARE SPARE TEMPFIL BLOCK 0 DESCRIPTION source value is based on the selection in ASRC upper byte where SPARE SPARE Temperature Input Filter in seconds Range 0 to 3276 The higher the number the faster the reading update DEFAULT 1000 READ WRITE HEX 18 20 21 DEC 24 25 26 27 14 15 PARAMETER MVFIL AZERO ANUM BZERO BNUM PROC COLDJCT TEMP MV DACV1 BLOCK 1 DESCRIPTION Millivolt Input Filter in seconds Range 0 to 3276 The higher the number the faster the reading update DEFAULT 1000 READ WRITE READ WRITE LINEAR OFFSET Y INTERCEPT LINEAR READ WRITE SCALING FOR INPUT A LINEAR SPAN VALUE FOR INPUT A READ WRITE LINEAR OFFSET Y INTERCEPT LINEAR READ WRITE SCALING FOR INPUT B LINEAR
4. SPAN VALUE FOR INPUT B This value is the calculated process value shown as an integer The decimal point and exponent values are required to determine the actual scaled value Range 999 to 9999 For example If the process oxygen display decimal point 2 and exponent 6 and PROC 1234 then the actual value and displayed as 12 34 ppm COLD JUNCTION Where 1 COUNT 1 F C RANGE 99 TO 255 C Note this parameter is an unsigned integer MEASURED TEMPERATURE Where temperature is presented in degrees C or F based on the C F setting Note this parameter is an unsigned integer of temperature 2721 62815 Range max min range of selected thermocouple MEASURED MILLIVOLT Where this value is scaled in 0 1 mV increments i e 10001 1000 1 Range 0 to 2000 mV ANALOG OUTPUT 1 0 to 4095 is 4 to 20 mA In dual mode 4mA 100 12mA 0 20mA 100 READ WRITE READ ONLY READ ONLY READ ONLY READ ONLY READ WRITE 11 14 2006 Page 16 of 23 Rev 14 HEX 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F DEC 20 35 36 37 38 39 40 41 42 43 44 45 46 47 PARAMETER DACV2 SPARE SPARE SPARE SPARE SPARE SPARE SPARE SPARE SPARE SPARE SPARE SPARE SPARE BLOCK 1 DESCRIPTION ANALOG OUTPUT 2 0 to 4095 is 4 to 20 ma In dual mode 4mA 100 12mA 0 20mA 100 SPARE READ WRITE 11 14 2006 Page 17 of 23 Rev 14
5. iain EENES 9 IAS A KK i A Ta Aer hamata at st ta suede vm n maine N a eee 10 PUNENOIET TAAS am a a massassa J dao sosa IIS 10 Data PCL fois een en ISSN MSA mit e E eo i 10 Error Check Field CREI a diiniita cdi 10 MEMORY MA AAA O AN 12 OPERATIONAL SPECTFICATIONG scccsssrsssssssrssssrssnsssssrsessessrsessessrsessesensenssesensessesessessesessnsseseeseeseeses 18 NOTE Please specify the following parameters when ordering a transmitter process type process range ppm thermocouple type temperature scale F C analog output 1 process and scale analog output 2 process and scale Typical Oxygen Transmitter Calibration F840030 Calibration Measured Value or Output Units Function Input Cold Junction Room Temp F Thermocouple 800 F B type F min standard t c type Thermocouple 3000 F B type F max standard t c type Millivolt 0 0 mV Millivolts Millivolt 2000 mV Millivolts Analog 1 Zero 0 O2 4 0 mA 0 1 Analog 1 Span 20 9 O2 20 0 mA 0 1 Analog 2 Zero 800 F 5 4 0 mA 0 1 Analog 2 Span 3000 F 5 20 0 mA 0 1 Typical Carbon Transmitter Calibration F840031 Calibration Measured Value or Output Units Function Input Cold Junction Room Temp F Thermocouple MUST BE F Min SPECIFIED Thermocouple MUST BE F Max SPECIFIED Millivolt 0 0 mV Millivolts Millivolt 2000 mV Millivolts Analog Zero 0 Carbon 4
6. style DIN rail Terminals Wire clamp screw terminals on four position removable terminal blocks Wire Size AWG 24 12 flexible stranded removable terminal blocks Max Torque 0 8 Nm CAUTION DO NOT CONNECT OR DISCONNECT HOUSING PLUGS WHILE MODULE IS POWERED OR UNDER LOAD Weight 10 oz Environmental Conditions Operating Temperature 20 C to 55 C 4 to 130 F Storage Temperature 40 C to 85 C 40 to 185 F Operating and Storage Humidity 85 max relative humidity noncondensing from 20 to 65 C Certifications and Compliance PENDING Safety EN 61010 1 IEC 1010 1 Safety requirement for electrical equipment for measurement control and laboratory use Part 1 Electromagnetic Compatibility Immunity as specified by EN 50082 2 Electrostatic discharge EN 61000 4 2 Level 3 8 kV air Electromagnetic RF fields EN 61000 403 Level 3 10 V m 80 MHz 1 GHz Page 19 of 23 11 14 2006 Rev 14 Fast Transients EN 61000 4 4 Level 4 2kV I O Level 3 2 kV power RF conducted interference EN 61000 4 6 Level 3 10 V rms 150 KHz 80 MHz Emissions as specified by EN 50081 2 RF Interference EN 55011 Enclosure class A Power main class A Note This instrument is designed for installation inside a grounded metal enclosure Always observe anti static precautions when installing or servicing any electronic device Ground your body to discharge any static field before touching the body or terminals of any electronic device T
7. 0 mA 0 1 Analog 1 Span 2 55 Carbon 20 0 mA 0 1 Analog 2 Zero MUST BE 4 0 mA 0 1 SPECIFIED Analog 2 Span MUST BE 20 0 mA 0 1 SPECIFIED Page 1 of 23 General Description The Oxymit Transmitter has been designed to work as an analog or digital interface for any zirconia based oxygen probe used to track dew point carbon potential or oxygen The transmitter connects to the temperature and millivolts outputs of an oxygen probe and can produce analog outputs proportional to the selected process value The features available are e Isolated inputs for thermocouple and probe millivolt e 24 bit Sigma Delta ADC for inputs e Serial EEPROM to store setup and calibration values e Two isolated self powered 4 20mA outputs for process value and temperature The transmitter makes a carbon or oxygen probe an intelligent stand alone sensor The transmitter is located near the probe preferably mounted in an enclosure The transmitter mounts onto a DIN rail and requires a24VDC power supply It measures the probe temperature and millivolts At the time of order the transmitter can be configured to calculate percent carbon dewpoint or percent oxygen from these inputs The results of any of these calculations are made available via two 4 20mA loop outputs Typically one first loop is set up for the process value the second loop transmits probe temperature eo a JN SVA 10 RTX y i
8. 0010 Linear Input A 0011 Carbon value 0100 Dewpoint value 0101 Oxygen value 0110 Redox value 0111 Output Power 1000 Control Output 1 1001 Control Output 2 1010 Linear Input B 1011 Programmable For Programmable write required output value into DACV1 where DACV1 0 is minimum output and DACV1 4096 is maximum output BITS 4 7 SPARE READ WRITE 11 14 2006 Page 14 of 23 Rev 14 HEX 0C 0D OE OF 10 DEC 12 13 14 15 16 PARAMETER DAC_OFFSET_1 DAC_SPAN_1 DAC SPAN 2 AOUTOF1 AOUTRN1 AOUTOF2 AOUTRN2 DAC_OFFSET_2 DAC2 OFFSET CALIBRATION BLOCK 0 DESCRIPTION READ WRITE HIGH BYTE ANALOG OUTPUT 2 0001 Temperature 0010 Linear Input A 0011 Carbon value 0100 Dewpoint value 0101 Oxygen value 0110 Redox value 0111 Output Power 1000 Control Output 1 1001 Control Output 2 1010 Linear Input B 1011 Programmable For Reference Number and Programmable write required output value into DACV2 where DACV2 0 is minimum output and DACV2 4096 is maximum output BITS 13 15 SPARE Special case If Analog Output 1 CONTROL OUTPUT 1 and Analog Output 2 CONTROL OUTPUT 2 and the Control Mode is dual then Analog Output 1 is 4 20ma for 0 to 100 PO and Analog Output 2 is 4 20ma for 0 to 100 PO DAC 1 OFFSET CALIBRATION READ WRITE DAC 1 SPAN CALIBRATION DAC2 SPAN CALIBRATION ANALOG OUTPUT
9. GE 0 255 Input Configuration BITS 0 3 TC Input TYPE 0000 B DEFAULT 0001 E 0010 0011 K 0100 0101 R 0110 0111 7 1000 SPARE 1001 SPARE 1010 SPARE 1011 SPARE 1100 SPARE 1101 SPARE 1110 SPARE 1111 SPARE BIT 4 SPARE BIT 5 0 NO CJ APPLIED 1 CJ APPLIED BIT 6 0 F 1 BIT 7 0 60HZ FILTER BIT 8 11 Millivolt Input TYPE 0000 LINEAR DEFAULT All other bit combinations are spare BITS 12 15 are spare SETUP VALUES READ WRITE 11 14 2006 Page 13 of 23 Rev 14 HEX OA 0B DEC PARAMETER FAULT ASRC BLOCK 0 DESCRIPTION BITS 0 4 OXYGEN EXPONENT RANGE 0 to 31 where 2 and 6 ppm DEFAULT 2 BITS 5 6 DISPLAY DECIMAL PLACE where 0 no decimal point in display 1 Display XXX X 2 Display XX XX 3 Display X XXX DEFAULT 0 BITS 8 12 REDOX METAL NUMBER RANGE 0 14 DEFAULT 0 BITS 13 15 SPARE FAULT BIT MAP BIT 0 Temperature Input Open BIT 1 MV Input Open BIT 2 Range of input is low BIT 3 Range of input is high BIT 4 Timer End BIT 5 Probe Care Fault BITS 6 7 SPARE BIT 8 CPU Fault BIT 9 Min Idle counter 0 BIT 10 Keyboard failure stuck key or a key was pressed during power up BIT 11 Flash Erase Failed BIT 12 Flash Checksum Failed BIT 13 EEPROM Checksum Failed BIT 14 Flash EEPROM Size Fault ANALOG OUT SOURCES LOW BYTE ANALOG OUTPUT 1 BITS 0 3 0001 Temperature
10. Marathon Sensors Inc Oxymit Transmitter Operators Manual Marathon Sensors Inc F200060 Revision 00 04 18 2001 01 02 03 04 05 06 07 08 09 10 11 12 13 14 04 23 2001 05 08 2001 09 19 2001 11 01 2001 11 21 2001 04 19 2002 10 30 2002 11 13 2002 11 06 2003 12 03 2003 09 30 2004 04 04 2005 04 11 2005 11 14 2006 COPYRIGHT 2004 MARATHON SENSORS INC 3100 East Kemper Road Cincinnati Ohio 45241 1 800 547 1055 513 772 1000 FAX 513 326 7090 All trademarks used in this publication are duly marked and the sole property of their respective owners No attempt at trademark or copyright infringement is intended or implied Marathon Sensors makes no warranties express or implied beyond the written warranty presented at initial purchase Marathon Sensors Inc is not responsible for any product process damage or injury incurred while using this equipment Marathon Sensors makes no representations or warranties with respect to the contents hereof and specifically disclaims any warranties of merchantability or fitness for any particular application or purpose Table of Contents GENERAL DESCRIPTION Kiissvcssisserisser Saana Taa Taa EA VATKAIN SSN Eer S SSE VSS N SE AAA AAA iaa naama asuaan 2 SAFETY SUMMARY ossssssssssssessssssccosssosseessssesansesensscosssssscaasvebedsesesssoosadvenscssosessenssecseddeaeedecssoesessbaceesasusaseadooesss 3 CONNECTIONS sis ccssscidesiscssscecssesisasicecesesdensassssces
11. SPARE HIGH BYTE SIO SETUP BITS 8 9 PARITY SETTING 00 Even Parity 7 bits 1 Stop bit 01 No Parity 8 bits 1 Stop bit 10 Odd Parity 7 bits 1 Stop bit BITS 10 11 RESPONSE DELAY 0 No delay applied to response 1 10ms delay applied to response 2 20ms delay applied to response 3 30ms delay applied to response BITS 12 14 BAUD SELECT 000 76 8K 001 38 4K 010 19 2K DEFAULT 011 9600 100 4800 101 2400 110 1200 111 600 BIT 15 HOST FORMAT 0 MSI PROP 1 MODBUS DEFAULT LOW BYTE TC ZERO CALIBRATION READ WRITE NUMBER HIGH BYTE TC SPAN CALIBRATION NUMBER LOW BYTE MV ZERO CALIBRATION NUMBER HIGH BYTE MV SPAN CALIBRATION NUMBER PROCESS FACTOR FOR CARBON OR DEWPOINT RANGE 0 to 4095 11 14 2006 Page 12 of 23 Rev 14 HEX 05 06 07 08 09 DEC PARAMETER EVENT LDLN CJTRM HADR SPARE CONFIGO CONFIG2 BLOCK 0 DESCRIPTION LOW BYTE INPUT EVENT CONFIGURATION Bits 0 3 0000 None 0001 Auto Mode Selected 0010 Remote Setpoint Selected 0011 Acknowledge alarms 0100 Timer Hold 0101 Timer End 0110 Timer Start 0111 Start probe test 1000 Process hold Bits 4 7 not used UPPER BYTE LOAD LINE LOW BYTE COLD JUNCTION TRIM COLD JUNCTION TRIM unsigned integer RANGE 128 TO 127 WHERE 1 COUNT 1 DEG C or F and 128 65408 HIGH BYTE HOST ADDRESS BITS 0 7 RAN
12. ak in the furnace or excess methane present Refer to probe troubleshooting guides to determine what other factors maybe effecting the carbon value Dew Point Process Factor The dew point process factor is similar to the carbon process factor but is used to adjust the dew point value if dew point is selected as the process value This number takes into account a number of assumptions that the dew point value is based on Primary among these is the assumed level of hydrogen in the atmosphere See the Theory of Process Calculation section for a complete explanation of this value Page 5 of 23 11 14 2006 Rev 14 Oxygen Exponent The range of oxygen is factory configured using the oxygen exponent number Percent oxygen is the standard setting where the oxygen exponent is set to 2 and the output range is 0 00 to 20 9 For a part per million ppm range the exponent would be set to 6 and the output range of 0 00 X 10 to 99 99 X 10 TC Type The following table shows the available thermocouple types and the ranges BOLD indicates the typical oxygen default Span F 3000 3000 1300 1300 2300 2300 2000 3000 3000 700 The Cold Junction correction is applied to all thermocouple types Analog Output Channels The analog outputs are factory configured to provide 4 to 20mA signals proportional to selectable process values NOTE The Analog Output Channels are isolated self powered current sources and do not reguire an exte
13. d rate settings 1200 2400 4800 9600 or 19 2K The default baud rate is 19 2Kbuad The default address is 1 Changes to these values can be made by writing to the appropriate memory register The Transmitter communicates in Modbus RTU Remote Terminal Unit protocol using 8 bit binary data characters Message characters are transmitted in a continuous stream The message stream is setup based on the following structure Number of bits per character Start bits 1 Data bits least significant first 8 Parity None only no bits for no parity Stop bits 1 Frror Checking CRC Cyclical Redundancy Check The Transmitter recognizes three RTU commands These are read single I registers command 4 read a single H register command 3 and preset a single H register command 6 In Modbus mode the Transmitter can be only be configured for the none parity option The instrument never initiates communications and is always in receive mode unless responding to a guery RTU Framing Frame synchronization can be maintained in RTU transmission mode only by simulating a synchronous message The instrument monitors the elapsed time between receipt of characters If three and one half character times elapse without a new character or completion of the frame then the instrument flushes the frame and assumes that the next Page 9 of 23 11 14 2006 Rev 14 byte received will be an address The follow command message structure is used
14. hese values Percent Oxygen e E 0 0215 Tk Where E probe millivolts Tk probe temperature in degrees Kelvin The 20 95 is the O2 in air Percent Carbon e E 786 0 043102 Tk ER A A 29 PF 400 E 786 0 043102 Tk Where E probe millivolts Tk probe temperature in Kelvin and PF is the process factor Dewpoint 4238 7 b 2 REO ee ee ee eee ee 459 69 6 281216 log 29 PF 400 E 1267 8 0 05512 Tr Where E probe millivolts Tr probe temperature in Rankin PF is the process factor and DP is the dewpoint in Fahrenheit Page 8 of 23 11 14 2006 Rev 14 Communications The Transmitter is capable of digital communications using the Modbus protocol This is possible by connecting to the half duplex RS 485 terminals using a shielded twisted pair Modbus The MODBUS protocol describes an industrial communications and distributed control system DCS that integrates PLCs computers terminals and other monitoring sensing and control devices MODBUS is a Master Slave communications protocol whereby one device the Master controls all serial activity by selectively polling one or more slave devices The protocol provides for one master device and up to 247 slave devices on a RS 485 half duplex twisted pair line Each device is assigned an address to distinguish it from all other connected devices All instruments are connected in a daisy chain configuration The instrument communicates with bau
15. his specification can change without notification Page 20 of 23 11 14 2006 Rev 14
16. ion 06 call to change data in register 01 to 200 The response from the instrument confirms the new value as being set Transmit from Host or Master Address Cmd Reg Reg Data Data CRC CRC HI LO HI LO HI LO 01 06 00 01 00 C8 D9 9C Response from Transmitter Address Cmd Reg Reg Data Data CRC CRC HI LO HI LO HI LO 01 06 00 01 00 C8 D9 9C The Transmitter will respond to several error conditions The three exception codes that will generate a response from the instrument are 01 Illegal Function 02 Illegal Data Address 03 Illegal Data Value 04 Slave Device Failure The response from the Transmitter with an exception code will have the most significant bit of the reguested function set followed by the exception code and the high and low CRC bytes Page 11 of 23 11 14 2006 Rev 14 Memory Map NOTE Modbus refers to the hexadecimal register location These parameters are formatted as unsigned 16 bit integers Any real number such as temperature can be evaluated as a signed number other parameters are bit mapped words that must be evaluated as single bits are bit groups 02 03 04 PARAMETER Not used TIME CONTROL SIOSET TC ZERO TC SPAN MV ZERO MV SPAN BLOCK 0 DESCRIPTION READ WRITE LOW BYTE TIMER CONTROL READ WRITE BIT 0 Timer Disabled 0 Timer Enabled 1 BIT 1 7
17. n gt gt 5V_A m 5V_B Power Pp gt 15V Supplies gt 15V is PO 15V 24V 12 B RS485 VUO Cra 24V COM m 15V 5V A 5V A ANALOG OUT 1 4 20mA T C INPUT j EEPROM mV INPUT A D CONV Process Controller 5V A ANALOG EVENT INPUT 4 20mA DISPLAY Figure 1 BLOCK DIAGRAM Page 2 of 23 11 14 2006 Rev 14 Safety Summary All cautions and instructions that appear in this manual must be complied with to prevent personne injury or damage to the Probe Transmitter or connected eguipment The specified limits of this eguipment must not be exceeded If these limits are exceeded or if this instrument is used in a manner not intended by Marathon Sensors Inc damage to this instrument or connected devices could occur Do not connect this device directly to AC motors valves or other actuators All AC alarm functions must be connected through an interposing DC coil relay with a maximum coil load of 0 5 amps DC The Probe Transmitter is not rated to act as a safety device It should not be used to provide interlocking safety functions for any temperature or process functions Alarm capabilities are provided for probe test and input faults only and are not
18. on the Smart Transmitter is going to do based on the probe millivolt and probe temperature inputs The default process value for the Smart Transmitter is O2 with an exponent selection of 2 This is the selection most often used in Boiler control and Combustion applications Percent Carbon and dew point are typically processes that are used in steel treating applications Percent Carbon is the process value most often used for the control of case depth or the percent of carbon in a steel hardening furnace Dew Point is used in the control for endothermic generators Carbon Process Factor The carbon process factor can be used to adjust the carbon value This number takes into account a number of assumptions that the carbon value is based on Primary among these is the assumed level of CO in the atmosphere See the Theory of Process Calculation section for a complete explanation of this value It maybe necessary to change the apparent furnace carbon as measured by the oxygen probe if this value is different than actual load samples shim stocks or gas analysis The basic rule of thumb is that an increase is the carbon process factor will decrease the apparent carbon level in the furnace The default value is 150 Typical values can very from 50 to 400 Increase or decrease the process factor until the desired carbon level is achieved A process factor that is drastically different than normal may be an indication of a failing probe water or air le
19. rnal supply If a chart recorder is to be used it should have input specifications within 4 to 20 mA If the recorder only responds to VDC inputs it will be necessary to add a 250 ohm dropping resistor across its input terminals The ideal location of the recorder is adjacent to the instrument but it may be located remotely if the connecting wires are properly shielded For best results the chart recorder input s should be isolated from ground Page 6 of 23 11 14 2006 Rev 14 Table 2 Analog Outputs Parameter Oxygen Possible Possible Name Default Options Ranges OUTPUT 1 02 02 CARBON 02 0 9999 MODE DEWPT TEMP LIN C 0 00 2 55 0 20 9 PROG DP 99 9 212 0 4 20mA Temp 999 3000 LIN 999 9999 PROG 0 4095 OUTPUT 2 TEMP 02 CARBON 02 0 9999 MODE DEWPT TEMP LIN C 0 00 2 55 800 3000 F PROG DP 99 9 212 0 4 20mA Temp 999 3000 LIN 999 9999 PROG 0 4095 NOTE SEE PAGE 4 FOR TYPICAL CALIBRATION VALUES Calibration The Smart Transmitter is factory calibrated The calibration can be verified once a year or according to customer calibration schedules The instrument should be returned to the factory if calibration is required 11 14 2006 Page 7 of 23 Rev 14 Process Variable Calculations The transmitter has a selectable process calculation for percent carbon percent oxygen or dewpoint The following eguations are used to derive t
20. tesdeassoss sdesaaesssendabesieasodesscicds uauuvasaaauaaane0skuuaaaeu aa kukaa asu aaenant 3 GROUNDING AND SHIELDING s sscccccesssnsencesecsececessenseeseeseceseenseeuccseccesecsceessnncesecescesssnnceueeceeeessessesnseaneesecess 4 PARAMETER SELECTIONS wisscessssescsssnsesvesscdeccesssoteccssoodedsossvieesodesduaees vaan vaakeuda nana vau in nie vaa aa avan vau tenian raadunsaen 4 PROCESS PARAMETERS 4 ssesescecescsvessesssteeceeseesvesueet STATS VEITSI VAINEN cddevslesep tena levebvesdeensecesesvees envencuscdnes 4 Process Type mean NO 3 Carbon Process Factor oaa daa 5 Pew Point Process Larco SANTA M A ai A ST N TNA A nat hain 5 Oxygen EXPONCNE at E EA EE A e LKT E aE E iia di 6 LC Types nn sa asa Fads en A Sedans oA cane eA ed LATA a Meet meets Navia 6 ANALOG QUTPUT CHANNELS 1 12i5issse ss NSA AASIN N AIN ATA NNN Ae avaan 6 SAA sens ossos seas stesse Ssss isores See NN ANKAN AV AT KNN esris aava kaan aa Vann 7 PROCESS VARIABLE CALCULATION G cssssccsssssccssssseccccsssscccsssccscssccccessscccssessscccssssccscssseccccssnsece see 8 PERCENT OXYGEN seat ds a mai A Lii s Met Ovat ante iei 8 PERCENT CARBON ma A NST airis 8 BIRAOA O I H EAEE EEE E a dc io ut ia et 8 COMMUNICATIONS issssstssasss tossa VV Nea asa aan ces UdG Eao SA OV aan KAN SU O NK N SAASTE EEEa SESE ESEAS Eneas 9 MOD US STM ISSa Tae NKI taa 9 RTU FVAMINBossssslsk i sista s aka Gdeie eaa kuaasaa ly saa arkea a donne ran oia ci aon arkaa KKeay saks eaa ea BE EOE
21. to be considered or used as safety contacts in any application Connections The Probe Transmitter has four removable terminal blocks grouped with four terminals each Each terminal is a wire clamp type with a standard slot screw Each clamp can accommodate AWG 24 to 12 flexible stranded wire Maximum torgue on the terminal screws should not exceed 0 8 Nm The figure below shows the arrangement of the terminals ese a og evi evt a LUT SIDE A01 COM NO eL OCK LOWER 5 6 7 8 Loo bool NSII TC MV uer BLUEK E RMINAL UPPER 9 10 11 12 8 18 1828 n RS485 2400 BLOCK TOWER N 13 14 15 16 NSN lt NC Ne SDE TERMINAL AO2 BI K R A ERMINAL Figure 2 Terminal Layout Page 3 of 23 11 14 2006 Rev 14 The next figure shows a schematic representation of the Probe Transmitter and typical connections reguired in the field OXYGEN MONITOR F 840030 BLU WHT an i BE OUT Tal il 180 UTPUT 1 OXYGEN De mt 1 p PU 1801 0 20 9 4 20mA DIGITAL EVENT 2 DIGITAL EVENT COM 4 uH HD lt qe BLU wHT 184C BLK J ora VD 7 1 6 Z BLU 1841 A GRN
22. where T is the reguired character delay Response from the instrument is based on the command T1 T2 T3 ADDRESS FUNCTION DATA CHECKSUM T1 T2 T3 8 BITS 8 BITS N X 8 BITS 16 BITS Address Field The address field immediately follows the beginning of the frame and consists of 8 bits These bits indicate the user assigned address of the slave device that is to receive the message sent by the attached master Each slave must be assigned a unique address and only the addressed slave will respond to a query that contains its address When the slave sends a response the slave address informs the master which slave is communicating Function Field The Function Code field tells the addressed slave what function to perform MODBUS function codes are specifically designed for interacting with a PLC on the MODBUS industrial communications system Command codes were established to manipulate PLC registers and coils As far as the Transmitter is concerned they are all just memory locations but the response to each command is consistent with Modbus specifications The high order bit in this field is set by the slave device to indicate an exception condition in the response message If no exceptions exist the high order bit is maintained as zero in the response message Data Field The data field contains information needed by the slave to perform the specific function or it contains data collected by the slave in response to a query This information ma
23. y be values address references or limits For example the function code tells the slave to read a holding register and the data field is needed to indicate which register to start at and how many to read Error Check Field CRC This field allows the master and slave devices to check a message for errors in transmission Sometimes because of electrical noise or other interference a message may be changed slightly while it is on its way from one device to another The error checking assures that the slave or master does not react to messages that have changed during transmission This increases the safety and the efficiency of the MODBUS system The error check field uses a CRC 16 check in the RTU mode Page 10 of 23 11 14 2006 Rev 14 The following is an example of a function 03 call for data at memory location 03 The value returned by the instrument is the hex value 1E Transmit from Host or Master Address Cmd Reg Reg Count Count CRC CRC HI LO HI LO HI LO 01 03 00 03 00 01 74 OA Response from Transmitter Address Cmd Byte Byte Data Data CRC CRC Count Count HI LO HI Lo HI LO 01 03 00 02 00 1E 38 4C Note that all the values are interpreted as hexadecimal values The CRC calculation is based on the A001 polynomial for RTU Modbus The function 04 command structure is similar to the 03 structure The following is an example of a funct
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