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Fieldbus Networks - Test Equipment

1. TO SHIELD SHORT is displayed If the short is between the wire and the shield TO SHIELD SHORT is displayed If a detected shield short goes away the Monitor indicates an INTERMITTENT SHIELD SHORT to or J Add Drop If a new device is added to the segment the Monitor will display its address and signal level If a frame is retransmitted to a device the device is considered dropped by the FBT 6 PA and the Monitor will display the address and last known signal level of the dropped device A Master device that is sent an FDL Status Request frame is also considered dropped Low The signal level of the device with the weakest signal is shown The device s address in decimal and hexadecimal is also displayed This will be the lowest signal level reading from a device since the Monitor was connected to the fieldbus By default measurements greater than 150mV are OK Specification subject to change without notice EUROPE EMEA Tel 44 0 1582 723633 AMERICAS Tel 1 603 926 0090 ASIA PACIFIC Tel 65 6 487 7887 E mail enquiry mtl inst com Web site www mtl inst com Fax 44 0 1582 422283 Fax 1 603 926 1899 Fax 65 6 487 7997 Oct 2007 Save Report Saves the data collected by the Monitor as a report Up to 8 reports may be saved from multiple segments and or multiple locations on one segment Transfer Report Connect the Monitor to a PC USB port and transfer the saved reports to E
2. button The first device shown will be the Master By default measurements greater than 150mV are OK If a device leaves the segment a is displayed if a device is added it shows Average Noise Displays the average of the most recent 100 noise measurements Noise levels are measured and displayed in 3 frequency bands frequencies in the fieldbus signalling band Fieldbus Frequency FF frequencies below the fieldbus signalling band Low Frequency LF and frequencies above the fieldbus signalling band High Frequency HF The particular frequency band displayed is selected by pushing the SELECT button Peak Noise Displays the peak noise recorded since the Monitor was connected The value displayed is the highest noise level measured since the last reset Peak noise levels are measured and displayed in the same three frequency bands as average noise Retransmit If a device does not respond to a request frame or a token frame the frame is retransmitted The FBT 6 PA indicates the address decimal and hexadecimal of the last device that failed to respond together with the number of retransmits since the function was reset If more than 250 retransmits are detected the display will read 250 Pressing the SELECT button cycles through screens indicating the number of detected retransmits for each device Shield Short If a short circuit between the fieldbus wire and the cable shield is detected
3. there is a good connection to the wire pair and Fieldbus Monitor and the Wiring Validator is in battery save mode and will automatically power down in about five minutes If the Power On indicator lights continuously all connections have been made properly and the Wiring Validator will stay on until it is manually powered off When the Wiring Validator is turned on the Fieldbus Monitor powers up and displays the following readings Voltage should be between 9 and 10V continued overleaf AMERICAS EUROPE EMEA ASIA PACIFIC E mail enquiry mtl inst com Web site www mtl inst com Tel 44 0 1582 723633 Tel 1 281 571 8065 Tel 65 6 487 7887 Fax 44 0 1582 422283 Fax 1 281 571 8069 Fax 65 6 487 7997 Aug 2008 e Push the Monitor s Mode button once to get the LAS function The LAS signal level reading should say OK and show the signal level in millivolts LAS Signal mV Wire Condition 350 or more Excellent 200 350 Good 150 200 Marginal 150 or less Not Good e Push the Monitor s Mode button three times to get the NOISE Average reading It should say OK and display the average noise level Noise Level mV Wire Condition 25 or less Excellent 25 50 Good 50 75 Marginal 75 or more Not Good Wire System Testing A complete fieldbus wire system with two terminators and other wiring blocks installed can be tested before field devices are connected This is done in the same way as the wire te
4. Fieldbus Foundation Austin Texas EUROPE EMEA Tel 44 0 1582 723633 AMERICAS Tel 1 603 926 0090 ASIA PACIFIC Tel 65 6 487 7887 E mail enquiry mtl inst com Web site www mitl inst com Fax 44 0 1582 422283 Fax 1 603 926 1899 Fax 65 6 487 7997 Dec 2007 SPECIFICATIONS Input voltage 8 to 32V DC Input current Fieldbus mode 10mA max t USB mode 30mA max Power dissipation Fieldbus mode 320mW max 32V DC USB mode 165mW max 5 5V DC Operating Temperature 20 to 50 C Dimensions 146 x 88 x 28 mm 5 7 x 3 5 x 1 1 inches Weight 378g 0 83lb Case Material ABS Case Specifications Provides IP54 protection DC Voltage measurement range 8 to 32 0 5 V DC Noise measurement ranges LF 50Hz to 4kHz O to 1000 mVpp 15 25mVpp FF Q9kHz to 40kHz O to 1000 mVpp 10 25mVpp t HF 9OkHz to 350kHz O to 250 mVpp 20 25mVpp Signal level measurement range 0 12 to 2Vpp 25mVpp Software utility and drivers Operating system Windows XP Windows 2000 USB version 1 1 2 0 Note Vpp Volts peak to peak Display update speed is impaired below 10 C t Excessive noise adjacent to the fieldbus frequency FF will prevent the FBT 6 from reading the fieldbus data and thus reduce functionality t In fieldbus mode the FBT 6 is powered by the fieldbus and draws approximately 9 4mA of current from the network depending on bus voltage and ambient temperature Specifications subject to cha
5. fall outside of these ranges replace the batteries as described below If the problem persists contact Relcom for assistance The unit contains no user serviceable parts Fieldbus Wiring Validator Low Battery 5 08 129 mm 2 75 69 9 mm Additional Wiring Tests To get a complete characterization of the fieldbus wiring measure the resistance between the individual conductors in the cable using a standard ohmmeter Suggested measurements include e The resistance between the twisted pair wires e The resistance between each of the twisted pair wires and the shield drain if present e The resistance between the shield drain and instrument ground bar Readings of 100K ohms or higher are acceptable Additional System Requirements A Relcom Fieldbus Monitor FBT 6 is required to obtain signal and noise measurements as described in these instructions Batteries The FBT 5 requires four 4 AA Alkaline batteries which are not included These must be installed prior to using the FBI 5 Access to the battery compartment is obtained by unscrewing the four screws on the back of the unit and removing the battery cover As a guide the batteries will last about 12 hours with continuous use Specifications The FBT 5 includes soft case Test Terminator clip leads and operating instructions Operating temperature range O to 50 C Dimensions 12 9 x 7 0 x 3 lcm 5 1 x 2 8 x 1 2 Weight 600g ORDERING INFORMATION D
6. fieldbus The red wire with the pointed probe should be connected at a positive point on the fieldbus For hands free operation a red mini hook assembly is available which can be attached to the end of the red pointed probe A black cable with mini hook is also available to plug onto the negative terminal of the FBT 4 Specifications The Monitor is powered by the fieldbus and draws 12 15mA of current depending on bus voltage and ambient temperature Operating temperature range O 50 C Weight 300g Size 11 8 x 5 0 x 2 1cm EUROPE EMEA AMERICAS ASIA PACIFIC Tel 65 6 487 7887 Fax 65 6 487 7997 E mail enquiry mtl inst com Web site www mtl inst com Tel 44 0 1582 723633 Tel 1 603 926 0090 Fax 44 0 1582 422283 Fax 1 603 926 1899 May 2004 Relcom CE Signal generator for testing fieldbus wiring Operates with wiring blocks installed The Fieldbus Wiring Validator FBT 5 is used in combination with the Relcom Fieldbus Monitor FBT 6 to test new or existing field wiring to determine its suitability for use in a FOUNDATION fieldbus network The FBI 5 acts as a signal generator supplying DC power and a simulated fieldbus signal to the wire pair being tested The FBT 6 is then used to take power signal and noise measurements Testing can be performed on existing instrumentation wiring multi pair cables newly installed fieldbus cable or a complete fieldbus wiring system with wiring bloc
7. power source is required It includes colour coded test leads and an LCD display Oct 2007 OPERATION The FBT 6 PA is connected to the segment using the clip on probes at the end of the cable The red probe is connected to the fieldbus wire the black probe to the wire and the green probe to the shield wire The and test leads are polarity sensitive and the Monitor will not operate if they are reversed When first connected to a fieldbus a version number is displayed for several seconds The Monitor then performs a Segment Check providing a quick indication of segment health The FUNCTION and SELECT buttons are used to choose from segment parameters that can be examined with the Monitor When a function is selected the data portion of the LCD display is blank until the Monitor has collected and processed the data After that the measured value is shown The indication OK is shown if the measured value is within the acceptable range The indication BAD is shown if the measured value is outside of the acceptable range The rotating symbol in the lower right corner of the display indicates that there is segment activity A horizontal bar underscore under the rotating symbol indicates that a frame was detected but could not be decoded This is not a maintained function so if a single bad frame is detected the underscore will only display for a short time Periodic bad frames will cause
8. the underscore to blink The following are more detailed explanations of each of the Monitor s functions r Segment Check When first connected the FBT 6 PA gathers data for all of its monitoring functions If all measured data is within acceptable range the Monitor displays ALL MEASUREMENTS OK Voltage The DC voltage on the segment is shown By default measurements over 9 volts are OK The maximum input voltage is 32 0 volts Device Count If Profibus PA devices are active on the segment the Monitor counts them If the count has remained the same since the initial segment check was performed the display shows OK Note on Profibus PA segments the Master is considered a device and as such is included in the count The FBT 6 PA is more sensitive to missed communications than most PC monitoring software As a result a device may still show up on PC monitoring software even though the FBT 6 PA has removed the device from its internal list of active devices Devices having communication difficulties may show up on the FBT 6 PA as repeatedly being added or dropped 1 If a device leaves the segment the display shows if a new device is added it shows FOUNDATION fieldbus is a trademark of Fieldbus Foundation Austin Texas EPS FBT 6 PA 1 Device The address in decimal and hexadecimal and signal level of each device on the segment is displayed in turn by pushing the SELECT
9. ARA Class Zone 21C T4 Imax Gps A B IIC mA CAN CSAE79 1 1 95 Imax Gps C D IIC IIA mA Entity IS eae ie Class Div 1 ABCD T4 Ui V 24 Canada FM CAN CSAE79 0 95 3028840 Class Zone O and 1 Imax Gps A B IIC mA 250 AEx Ex ia IIC T4 Imax Gps C D IIC IIA mA 250 CAN CSA E79 1 1 95 Pi W 12 Entity IS FN60079 0 2004 EU LCIE Pr EN60079 11 2005 IE 96 NEX Ex ia lC TA EN60079 27 2004 IEC 60079 0 2004 EU Relcom IEC 60079 15 2006 501 316 Ex nb IIC TA Ex ic lIC TA Vmax 32V Imax 1 54 IEC 60079 11 2005 ORDERING INFORMATION part Number FBT 6 PA Profibus PA Diagnostic Monitor supplied in carry ing case with FBT A 1 A62 and A63 cables software and instruction manual FBT A6 1 FBT 6 PA Fieldbus Cable with Mini Hook Probes FBT A62 FBT 6 PA USB Cable FBT A63 FBT 6 PA Fieldbus Cable with Clip on Probe FBT A64 Clip on Probe Specifications subject to change without notice j EUROPE EMEA Tel 44 0 1582 723633 Fax 44 0 1582 422283 AMERICAS Tel 1 603 926 0090 Fax 1 603 926 1899 ASIA PACIFIC Tel 65 6 487 7887 Fax 65 6 487 7997 Oct 2007 E mail enquiry mtl inst com Web site www mtl inst com
10. ATL Instruments Fieldbus Networks Test Equipment COOPER Crouse Hinds FBT 3 FBT 4 FBT 5 FBT 6 FBT 6 PA xRelcom C EUROPE EMEA AMERICAS ASIA PACIFIC Tel 44 0 1582 723633 Tel 1 281 571 8065 Tel 65 6 487 7887 E mail enquiry mtl inst com Web site www mtl inst com Bus powered fieldbus monitor for monitoring LAS Packet traffic Device counts Framing errors The Fieldbus Monitor FBT 3 is used to examine the operation of a live FOUNDATION fieldbus network without interfering with its operation The monitor is intended for maintenance personnel to verify network operation or to troubleshoot an errant network The Fieldbus Monitor allows the user to quickly assess the health of a fieldbus network segment by providing measurements of bus power level minimum signal level and peak and average noise level It also displays the number of devices present on the segment and indicates when devices are added or removed from the network The Fieldbus Monitor is palm sized for portability and is powered by the fieldbus so that no batteries or external power source is required It includes color coded test leads and an LCD display Fax 44 0 1582 422283 Fax 1 281 571 8069 Fax 65 6 487 7997 live troubleshooting for fieldbus H1 networks Monitor also measures Signal levels Noise levels DC power Caution The FBT 3 must not be used in a hazardous area without a ga
11. d It includes colour coded test leads and an LCD display Dec 2007 Operation The FBT 6 is connected to the network using the clip on probes at the end of the cable The red probe is connected to the fieldbus wire the black probe to the wire and the green probe to the shield wire The and test leads are polarity sensitive and the Monitor will not operate if they are reversed When first connected to a fieldbus a version number is displayed for several seconds The Monitor then performs an Overall Network Check to give the user a quick indication of network health The FUNCTION and SELECT buttons are used to select from network parameters that can be examined with the Monitor When a function is selected the data portion of the LCD display is blank until the Monitor has collected and processed the data After that the measured value is shown The indication OK is shown if the measured value is within the acceptable range The indication BAD is shown if the measured value is outside of the acceptable range The rotating symbol in the lower right corner of the display indicates that there is network activity A horizontal bar underscore under the rotating symbol indicates that a frame was detected but could not be decoded This is not a maintained function so if a single bad frame is detected the underscore will only display for a short time Periodic bad frames will cause the underscore
12. e display will read 250 Pressing and holding the SELECT key for 2 seconds will reset the retransmit count for all devices to zero Pressing the SELECT button for less than 2 seconds displays the number of detected missed pass tokens for each device Add Drop If a new device is added to the network the Monitor will display its address and signal level If a device does not respond to a Pass Token frame the device is considered dropped by the FBT 6 and the Monitor will display the address and last known signal level of the dropped device Shield Short If a short circuit between the fieldbus wire and the cable shield is detected TO SHIELD SHORT is displayed If the short is between the wire and the shield TO SHIELD SHORT is displayed If a detected shield short goes away the Monitor indicates an INTERMITTENT SHIELD SHORT to or J Save Report Saves the data collected by the Monitor as a report Up to 8 reports may be saved from multiple segments and or multiple locations on one segment Transfer Report Connect the Monitor to a PC USB port and transfer the saved reports to Excel files on the PC Set Report Names Customize the names of the reports saved in the Monitor to easily identify the report source Set OK BAD Limits Change the limits at which Monitor measurements transition from OK to BAD to establish customized plant standards FOUNDATION fieldbus is a trademark of
13. e without notice EPS FBT 6 PA 1 Profibus PA Segment Diagnostic Report Report 7 Segment Report Acceptable Values DRAAD 12 0 Minimum iim Mrmum hramuri Segment Mexsurements Lowest Device Signal Lewes Device Signal Address Awg Fieldbus Frequency Moise Drei a v Maou Peak Fighdbus Fequercy Noise Toke hmv Maoonuim Low Lee HEE 3 i i S me La eT Peak Low Frequent Ness fa se ae On gop pales betes E A e Shed Shon Ta Short 3 Mo Shons Masi Rece Add Diron Address ia Devices Addediropord Dmie Add or Ora Hong Adie di raped Hom Added Lrooned Ox Humber of Actwe Devices 1 gt le 7 Acoapiable Values 1S0my Miramum oped al Addedi d OK Masiero Slave i ee CS Meatuvrement Summary All Measurements are OK Data collected by Report approved by EUROPE EMEA Tel 44 0 1582 723633 AMERICAS Tel 1 603 926 0090 Fax 1 603 926 1899 ASIA PACIFIC Tel 65 6 487 7887 Fax 65 6 487 7997 Oct 2007 E mail enquiry mtl inst com Web site www mtl inst com Fax 44 0 1582 422283 EPS FBT 6 PA 1 APPROVALS C acc O Class Div 2 ABCD T4 Vmax V US FM ore Ol Soniye ce Class Zone 2 IIC T4 Imax Gps A B IIC mA Imax Gps C D IIC IIA mA Class Div 1 ABCD T4 Ui V US FM 3600 3610 3611 3810 3023564 Class Zone O and 1 Imax Gps A B IIC mA AEx Ex ia IIC T4 Imax Gps C D IIC IIA mA Pi W C22 2 No 213 C22 2 No 157 Class Div 2 ABCD T4 Ui V Canada FM CAN CSAE79 0 95 SOL
14. escription Part Number Fieldbus Wiring Validator FBT 5 Fieldbus Monitor FBT 6 EUROPE EMEA Tel 44 0 1582 723633 AMERICAS Tel 1 281 571 8065 ASIA PACIFIC Tel 65 6 487 7887 E mail enquiry mtl inst com Web site www mtl inst com Fax 44 0 1582 422283 Fax 1 281 571 8069 Fax 65 6 487 7997 Aug 2008 xRelcom C AMERICAS EUROPE EMEA ASIA PACIFIC E mail enquiry mtl inst com Web site www mtl inst com fieldbus powered device add amp drop indication shield short indication 4 measures low fieldbus and high frequency average and peak noise measures signal level for all segment devices The Fieldbus diagnostic monitor FBT 6 is used to examine the operation of a live FOUNDATION fieldbus H1 network without interfering with its operation The Monitor is intended for maintenance personnel to verify network operation or to troubleshoot an errant network The FBT 6 diagnostic monitor checks for retransmissions from each device on the segment providing a key performance indicator of the networks health Measurements of bus voltage level device signal level and peak and average noise level It displays the number of devices present on the segment and indicates when devices are added or removed from the network It also detects the presence of a short between either of the signal wires and the cable shield Modern fieldbus commissioning procedures require various bus paramete
15. etermine if the problem resides in the transmitter itself or is due to an open or short in the network cable system Inexpensive and portable the FBT 4 runs on bus power and thus requires no batteries or other external source of power Operation One red and two green LEDs indicate the status of the fieldbus network They are labeled Signal Voltage and Reversed A lit green LED indicates that the network is performing satisfactorily A lit red LED signals an error condition Following are descriptions of the three indicators Signal indicates that there is bus activity It will only light if data traffic is detected with peak to peak amplitude greater than 150 mV The validity of the data is not checked You will notice that the LED monitoring of fieldbus networks Fieldbus Power and Signal Probe FBT 4 Relcom Inc Monitors DC power Polarity Packet traffic blinks when there is bus activity It is driven directly by the frame data and is thus not powered during the brief silence between packets Voltage indicates that the DC Voltage on the fieldbus is greater than the 9 0V dc minimum that is required by the fieldbus standard Reversed indicates that the FBT 4 probes have been connected to the network incorrectly or that the fieldbus has been wired with reversed polarity Connection The pointed probe attached directly to the case of the FBT 4 is the negative input and should be connected to a negative point on the
16. ice is to be added to the network it must respond to the Probe Node frame sent by the LAS The Monitor measures the signal level of the new device s response Measurements greater than 150mV are OK The address in hexadecimal of the new device is displayed also Specifications The Monitor is powered by the fieldbus and draws approximately 10mA of current from the network depending on bus voltage and ambient temperature Operating temperature range 2 75 ins Fieldbus Monitor 1 22 ins 31 mm O 50 C Dimensions 12 9 x 7 0 x 3 1cm Weight 150g as EUROPE EMEA Tel 44 0 1582 723633 Fax 44 0 1582 422283 AMERICAS Tel 1 281 571 8065 Fax 1 281 571 8069 May 2004 ASIA PACIFIC Tel 65 6 487 7887 Fax 65 6 487 7997 E mail enquiry mtl inst com Web site www mtl inst com FBT 4 Relcom C Checks for basic fieldbus operation Bus powered The Fieldbus Power amp Signal Probe FBT 4 is used to examine the operation of a live FOUNDATION fieldbus network without interfering with its operation The Probe is intended for maintenance personnel to verify network operation or to troubleshoot an errant network The Power and Signal Probe is designed to help instrument technicians quickly determine if bus power and signal levels are within specification at individual points on a fieldbus network segment For example if a fieldbus transmitter suddenly goes offline the FBT 4 can be used to d
17. ks and terminators already installed Connection Using the clip leads connect the FBT 5 to one end of the cable To the other end attach the Test Terminator Connect the FBT 6 to the Test Terminator Be sure to attach the red clips to the positive fieldbus wires and the black clips to the negative If the wires are reversed the Monitor will not function Caution The FBT 5 must not be used in a hazardous area without a gas clearance certificate If connected to an IS trunk even in a safe area the gas clearance must cover the whole system accurate characterisation of fieldbus wiring Use with FBT 6 to measure signal and noise levels Test fieldbus wiring before the control system is installed Operation The Wiring Validator has a push button Power switch to turn it on or off If the Wiring Validator is turned on with a single click of the Power button it will stay on for about 5 minutes and then automatically turn itself off to conserve battery power If the Wiring Validator needs to be powered on indefinitely such as when wire testing is being performed by a single person press and hold the Power button for about 3 seconds The green Power On light shows that the Wiring Validator is on If the Power On light blinks rapidly about three times per second the Wiring Validator or Fieldbus Monitor is not attached to the wire pair or the connection is reversed If the Power On blinks slowly about once a second
18. nge without notice P EUROPE EMEA Tel 44 0 1582 723633 Fax 44 0 1582 422283 AMERICAS Tel 1 603 926 0090 Fax 1 603 926 1899 ASIA PACIFIC Tel 65 6 487 7887 Fax 65 6 487 7997 E mail enquiry mtl inst com Web site www mtl inst com Dec 2007 APPROVALS je aaa ane US FM 3600 3610 3611 3810 3023564 US FM 3600 3610 3611 3810 3023564 Canada FM Class Div 2 ABCD T4 Class Zone 2 IIC T4 Class Div 1 ABCD T4 Class Zone O and 1 AEx Ex ia IIC T4 C22 2 No 213 C22 2 No 157 CAN CSA E79 0 95 CAN CSA E79 1 1 95 Class Div 2 ABCD T4 Class Zone 2 IIC T4 C22 2 No 213 C22 2 No 157 3028840 CAN CSA E79 0 95 Canada FM 3028840 CAN CSAE79 1 1 95 EN60079 0 2004 EU LCIE Pr EN60079 11 2005 ae ee EX EN60079 27 2004 IEC 60079 0 2004 EU Relcom 501 316 IEC 60079 15 2006 ORDERING INFORMATION Class Div 1 ABCD T4 Class Zone O and 1 AEx Ex ia IIC T4 Ex ia IIC T4 Ex nL IIC TA Ex ic IIC T4 IEC 60079 11 2005 part Number FBT 6 FOUNDATION fieldbus H1 Diagnostic Monitor supplied in carrying case with FBT A6 1 A62 and A63 cables software and instruction manual FBT A6 1 FBT 6 Fieldbus Cable with Mini Hook Probes FBT A62 FBT 6 USB Cable FBT A63 FBT 6 Fieldbus Cable with Clip on Probe FBT A64 Clip on Probe 501 338 FBT 6 User Manual Specifications subject to change without notice Vmax V Imax Gps A B IIC mA Imax Gp
19. nts greater than 150mV are OK Device The address in decimal and hexadecimal and signal level of each device on the network is displayed in turn by pushing the SELECT button On FOUNDATION fieldbus networks the first device shown will be the LAS Measurements greater than 150mV are OK Average Noise Displays the average noise based on the average of the last 100 noise measurements Noise levels are measured and displayed in 3 frequency bands frequencies in the fieldbus signalling band Fieldbus Frequency FF frequencies below the fieldbus signalling band Low Frequency LF and frequencies above the fieldbus signalling band High Frequency HF The particular frequency band displayed is selected by pushing the SELECT button Measurements of less than 75mV are OK Specification subject to change without notice Peak Noise Displays the peak noise recorded since the Monitor was connected The value displayed is the highest noise level measured since the last reset Peak noise levels are measured and displayed in the same three frequency bands as average noise Measurements of less than 7SmV are OK Retransmit The FBT 6 checks for any device not responding to a LAS pass token and indicates the address decimal and hexadecimal of the last device that failed to respond to the LAS pass token together with the number of missed pass tokens since the function was reset If more than 250 re transmissions are detected th
20. rs to be measured and recorded Key parameters include bus voltage signal level for each device and noise level on each Tel 44 0 1582 723633 Tel 1 603 926 0090 Tel 65 6 487 7887 Fax 44 0 1582 422283 Fax 1 603 926 1899 Fax 65 6 487 7997 Fieldbus diagnostic monitor assesses network health connects to intrinsically safe fieldbus in Zone 1 and Division 1 hazardous areas connects to non incendive fieldbus in Zone 2 and Division 2 hazardous areas uploads measurement data to a PC via USB port segment or at every device on each segment and recording the results allows a baseline of the fieldbus physical layer to be established The FBT 6 collects this data and allows up to eight file sets of data to be saved for uploading to a PC via a USB port The data is uploaded as a tab delimited text file and may then be used to create comprehensive commissioning and operations reports Considerable savings can be achieved by reducing commissioning time and verifying the accuracy of the data on the segment Data collected from periodic network verification testing or during troubleshooting can be simply transferred to a file for easy comparison to the segment baseline history measurements Data can be displayed as tables and graphs using commonly available software such as Microsoft Excel Hand held for portability the FBT 6 is powered by the fieldbus so that no batteries or external power source is require
21. rt between either of the signal wires and the cable shield Modern fieldbus commissioning procedures require various bus parameters to be measured and recorded Key parameters include bus voltage signal level for each device and noise level on each segment or at every device on each segment Tel 44 0 1582 723633 Tel 1 603 926 0090 Tel 65 6 487 7887 Fax 44 0 1582 422283 Fax 1 603 926 1899 Fax 65 6 487 7997 E mail enquiry mtl inst com Web site www mtl inst com EPS FBT 6 PA 1 Profibus PA diagnostic monitor measures signal level for all segment devices assesses network health upload measurement data to a PC via USB port Recording the results allows a baseline of the fieldbus physical layer to be established The Monitor collects this data and saves up to eight segment reports to be saved for transfer to a PC via a USB port The reports are saved as Microsoft Excel files as a comprehensive commissioning and operations report Considerable savings can be achieved by reducing commissioning time and verifying the correct operation of the segment Data collected from periodic segment verification testing or during troubleshooting can be simply transferred to a file for easy comparison to the segment baseline history measurements Data can be displayed as tables and graphs using Microsoft Excel Hand held for portability the Monitor is powered by the fieldbus so that no battery or external
22. s C D IIC IIA mA Ui V Imax Gps A B IIC mA Imax Gps C D IIC IIA mA Pi W Ui V Imax Gps A B IIC mA Imax Gps C D IIC IIA mA Ui V Imax Gps A B IIC mA Imax Gps C D IIC IIA mA Pi W Entity IS 24 250 Entity IS 24 250 250 1 2 Entity IS 24 250 1 2 Vmax 32V Imax 1 5A EUROPE EMEA Tel 44 0 1582 723633 Fax 44 0 1582 422283 AMERICAS Tel 1 603 926 0090 Fax 1 603 926 1899 ASIA PACIFIC Tel 65 6 487 7887 Fax 65 6 487 7997 E mail enquiry mtl inst com Web site www mtl inst com Dec 2007 EUROPE EMEA AMERICAS ASIA PACIFIC fieldbus powered device add amp drop indication shield short indication 4 measures low fieldbus and high frequency average and peak noise The Profibus PA Diagnostic Monitor FBT 6 PA is used to examine the operation of a live Profibus PA segment without interfering with its operation The Monitor is intended for maintenance personnel to verify segment operation or to troubleshoot an errant segment The FBT 6 PA Diagnostic Monitor checks for retransmissions from each device on the segment providing a key performance indicator of segment health The Monitor also provides measurements of bus voltage level device signal level and peak and average noise level It displays the number of devices present on the segment and indicates when devices are added or removed from the segment It also detects the presence of a sho
23. s clearance certificate If connected to an IS trunk even in a safe area the gas clearance must cover the whole system May 2004 Operation The FBT 3 can be connected to the network using the clip leads The test leads are polarity sensitive and the Monitor will not operate if they are reversed When first connected to a fieldbus a Version number is displayed for 1 second The MODE button is used to select from several network parameters that can be examined with the Monitor When a function is selected the LCD display reads until the monitor has collected and processed the data After that the measured value is shown The indication OK is shown if the measured value is within the acceptable range as defined by the fieldbus specification The rotating symbol in the lower right corner of the display indicates that there is network activity A horizontal bar under the rotating symbol indicates that a frame was detected but could not be decoded This is not a maintained function l e if a single bad frame is detected the horizontal underbar will only be on the display for a short time Periodic bad frames will cause the underbar to blink Following are more detailed explanations of each of the monitor s modes Power The DC voltage on the network is shown Measurements over 9V are OK The maximum displayed value is 25 5V LAS If there is any activity on the network the Link Active Scheduler LAS
24. should be sending out Probe Node frames The Monitor measures the signal level of the Probe Node frame The signal level is in millivolts Device If there are fieldbus devices active on the network the Monitor counts them If the count has remained the same since the Device function was selected the display shows OK Note that the LAS is considered a device and as such is included in the count Devices are counted by watching their response to a Pass Token If a device does not respond to the Pass Token it is taken off an internal list and the count will be reduced The device may still show up on PC monitoring software because the LAS will not take it off of the Live List until it has failed to respond to a Pass Token three times in a row If a device leaves the u n network is displayed If a new device is added the display shows Low The signal level of the device with the weakest signal is shown The device s address hexadecimal is displayed behind the word LOW This will be the lowest signal level reading from a device since the tester was connected to the fieldbus Measurements greater than 150mV are OK Noise Av The noise on the network is measured during the silence between frames The value is averaged over 10 measurements Measurements of less than 75mV are OK Noise Pk The peak noise recorded since this function was started is displayed Measurements of less than 75 mV are OK New If a new dev
25. sting described previously except that the Test Terminator is not used Note The wiring system cannot have fieldbus devices attached to it during testing The Wiring Validator is not capable of providing power to the fieldbus devices and its signal generator will interfere with any data transmission that the fieldbus devices attempt to initiate If the wiring system has two terminators installed as required for proper fieldbus operation test results will be comparable to the results of the wire by itself However if too few or too many terminators have been installed the measured signal levels will be inaccurate The chart below shows the relative values of LAS signal level that will be observed Terminators LAS Signal mV O 999 961 2 correct number 760 3 637 Error Conditions A blinking Low Battery light indicates that the outputs of the Wiring Validator are shorted The Low Battery light may also flash briefly as the Wiring Validator is first attached to a wire pair A continuously lit Low Battery light indicates that the batteries need to be replaced Self Test To verify that the Wiring Validator and the Fieldbus Monitor are working correctly connect them to each other through the Test Terminator Observe the power signal and noise values and verify that they are within the following ranges Measurement Acceptable Range Power 9 to 10V LAS Signal 700 to 800mV Noise Average less than 25mV If the observed values
26. to blink Here follows a more detailed explanation of each of the Monitor s functions Segment Check When first connected the FBT 6 gathers data for all of its monitoring functions If all the measured data is within an acceptable range the Monitor displays ALL MEASUREMENTS OK Voltage The DC voltage on the network is shown Measurements over 9 volts are OK The maximum input voltage is 32 0 volts Device Count If there are fieldbus devices active on the network the Monitor counts them If the count has remained the same since the initial network check was performed the display shows OK Note on FOUNDATION fieldbus networks the Link Active Scheduler LAS is considered a device and as such is included in the count The FBT 6 is more sensitive to missed communications than most PC monitoring software As a result a device may still show up on PC monitoring software even though the FBT 6 has removed the device from its internal list of active devices Devices having communication difficulties may show up on the FBT 6 as repeatedly being added or dropped If a device leaves the network the display shows if a new device is added it shows Low The signal level of the device with the weakest signal is shown The device s address in decimal and hexadecimal is also displayed This will be the lowest signal level reading from a device since the Monitor was connected to the fieldbus Measureme
27. xcel files on the PC Set Report Names Customize the names of the reports saved in the Monitor to easily identify the report source Set OK BAD Limits Change the limits at which Monitor measurements transition from OK to BAD to establish customized plant standards SPECIFICATIONS Input voltage Fieldbus Mode 8 to 32 VDC USB Mode 4 1 to 5 5 VDC Input current Fieldbus mode 10mA max t USB mode 30mA max Power dissipation Fieldbus mode 320mW max 32 VDC USB mode 165mW max 5 5 VDC Operating Temperature 20 to 50 C Dimensions 146 x 88 x 28 mm 5 7 x 3 5 x 1 1 inches Weight 378g 0 83 b Case Material ABS DC Voltage measurement range 8 to 32 0 5 VDC Signal level measurement range 0 12 to 2 Vpp 10 25mVpp Noise measurement ranges LF 50Hz to 4kHz O to 1000 mVpp 15 25 mVpp FF Q9kHz to 40kHz O to 1000 mVpp 10 25 mVpp T HF 9OkHz to 350kHz O to 250 mVpp 20 25mVpp Software utility and drivers Operating system Windows XP Windows 2000 USB version 1 220 Note Vpp Volts peak to peak t In fieldbus mode the FBT 6 PA is powered by the fieldbus and draws approximately 9 4mA of current from the segment depending on bus voltage and ambient temperature Display update speed is impaired below 10 C t Excessive noise adjacent to the fieldbus frequency FF band will prevent the FBI 6 PA from reading the fieldbus data and thus reduce functionality Specifications subject to chang

Fieldbus Networks - Test Equipment

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