Manual do usurio do DF77
Contents
1. USER S MANUAL PULSE INPUTS MODULE WITH PROVER SUPPORT S e gt o eo gt gt Q D 5x2 P FLOW COMPUTER DFI302 uo 3 E D F 7 7 ME smar www smar com Specifications and information are subject to change without notice Up to date address information is available on our website web www smar com contactus asp DF77 Pulse Inputs Module with Prover Support DF77 PULSE INPUTS MODULE WITH PROVER SUPPORT Introduction The DF77 is a module with 10 pulse and frequency inputs divided in 5 isolated groups provided with prover support It is ideal to applications of flow measurement and totalization such as turbines or positive displacement meters DF77 is an A Level pulse totalizer module that has 10 independent totalizers of 16 bits operating in single pulses or 5 totalizers operating in dual pulses It is in compliance with the main Brazilian and international standards regarding pulse transmission reliability and volumetric meter proving with pulsed output It is used together with FC302 This manual describes basic characteristics common to all the applications For specific information about configuration and operation please refer to the AuditFlow s manual 1A IN2 2A IN3 3A com 4A amp ouri 5A 82. aaea EP aE IV TABLE OF CONTENTS tadan daan Aadan naaraan Sanai V DF77 PULSE INPUTS MODULE WITH PROVER SUPPORT 1 OVERVIEW tes ctt esr ee ee ten e ee em aed e ER e et ER a ee e E Ede 1 STANDARDS COMPLIANCE 2 5 tote dete ce See tegi e aea u Pre ue eine 1 FEATURES dos tons ederet festa a esee ote 6 1 DESCRIPTION OF THE FRONT PANEL EEDS nee He e HIDE eet 2 VO CIRCUITS fi EE 2 INSTALLATION cise scat ite eden tr tete a geen ce d ir ces tr re eR a Y Du dde dle que Deva du eter da E tecto 3 THINGS THE USER SHOULD NEVER BO et cete queis ee en e arabes dst e cede ve dee 3 THINGS THE USER SHOULD AEWAYS DQ etui ct tme ct ge e ctore eh ttt bec thc dts 3 PULSE TRANSMITTER S 2 5 RR Ie noU ee E Lade 4 USING PREAMPLIFIERS a ee eec d erdt tn Se e e be e a tte d e ege 4 PROVER GONNEQGCTIONS tite e Re eR Rte t n Reden LE eee SER nec see 5 GENERAL GONNEGCTION FOR PROVERBS uu tede er Geis cele er 6 CONNECTING THE CALIBRON SYNCROTRAK COMPACT 2 6 CONNECTING THE BROOKS COMPACT
3. Prover interface 401 D Interface Figure 9 Connecting the Calibron Syncrotrak Compact Prover DF77 User s Manual Connecting the Brooks compact prover BROOKS TB1 ver Support To FC302 analog input modules nes DC 4 20 INPUT 4 20MA INPUT PLENUM PRESSURE PLENUM PRESSURE Figure 10 Connecting the Brooks Compact Prover Connecting the Master Meter The DF77 also supports the proving for Master Meter MM The MM operation is the same of any other meter This means that all filter mechanisms error detection and correction are applied to the MM It was defined that group 5 should be used for the MM connection However any input or group of inputs can be used once the FC302 blocks are configured correctly The MM must be carefully installed as the production meters Refer to FC302 s manual for more details Figure 11 Connecting the Master Meter DF77 Pulse Inputs Module with Prover Support Installation in Hazardous Areas The DF77 cannot be directly connected to devices located in hazardous areas One of the ways to do this installation is using intrinsic safety barriers Pulse signals installation Pulse inputs A1 B1 A5 B5 should use digital repeater barriers The barriers output should match DF77 input levels 0 1 2V and 1 gt 3 5V Additionally barrier s response time should be sufficient to work in the operation frequency range of the puls
4. 7 CONNECTING THE MASTER METER c count es OE Let ee allasqa 7 INSTALLATION IN HAZARDOUS AREAS n irre treten itr its etes 8 TECHNICAL SPECIFICATIONS tte ette repe thee Dec pode sad c e duet tene atte 11 DIMENSIONS T 12 TROUBLESHOOTING itin ot etd teen te bet e on een 13 DF77 User s Manual VI DF77 Pulse Inputs Module with Prover Support DF77 PULSE INPUTS MODULE WITH PROVER SUPPORT Overview Standards Compliance ANP INMETRO Regulation number 1 and number 64 API MPMS 4 6 Proving Systems Pulse Interpolation API MPMS 5 5 Metering Fidelity and Security of Flow Measurement Pulsed Data Transmission Systems ISO 6551 Petroleum Liquids and Gases Fidelity and security of dynamic measurement Cabled transmission of electric and or electronic pulsed data ISO 7278 3 Liquid hydrocarbons Dynamic measurement Proving systems for volumetric meters Part 3 Pulse interpolation techniques Features The DF77 has 10 inputs for counting the pulses and average frequency measurement with 0 01 accuracy The DF77 has features that make it ideal for applications of flow measurement and pulse totalization A level pulse totalizers API 5 5 and ISO 6551 The totalizers provide the accumulated total from the last CPU readi
5. The input is receiving the pulse train with frequency out of the lower and upper range limits configured in the CPU transducer block or Green blinking there is too much noise Mos M A5 The sign frequency is among the following limits B1 B5 iis f FREQ LOWER RANGE or FREQ UPPER RANGE f 25 Z There has been a signal failure or the measured frequency is out of Red ON the maximum limits of the equipment 5Hz 25kHz or the duty cycle is smaller than 1596 of the corresponding period to the configured value in FREQ UPPER RANGE OFF The corresponding input is disabled by the configuration in the CPU transducer block Table 1 Front Panel LEDs Circuits The figure below shows the block diagram of the I O circuits to facilitate the connection of the pulse transmitters preamplifiers and external interfaces DF77 Pulse Inputs Module with Prover Support DF77 5x2 Pulse Inputs with Prover Support Installation IN1 fo Oc 5 IM 22 Stat gt pe IN2 g x Stop INS o i OUT1 CONTROL GND ro COM START PULSE OUT1 Hono EL TO PROVER 140 L OPEN DRAIN 100 V 0 1 0 7 I B1 n AGND6 ISOLATION lol c1 1 BETWEEN EACH svoe GROUP 0 A2 Q 12V B2 2 4 3 5V Single pulse lol c2 hl 470R 2W n Ah if gt 3 BO E ee 50mA L Ra l A B3 gt Isolation
6. 6A o 2 3 B1 7A fo C1 8A a e 2 9A a 5 p B2 10A 2 1B 3 2 2B E a 3B 0 N 2 A 4B amp 4 5B 3 B4 B 10 A 6 J C4 7B ex A5 8B B5 9B C5 10B Figure 1 Pulse Inputs Module with Prover Support DF77 Part Number DF77 5 x 2 Pulse Inputs Module with Prover Support III DF77 User s Manual WARNINGS This equipment has Electrostatic Discharge ESD sensitive components Do not open the module while it is powered or without the appropriate ESD protection Otherwise the circuits can be damaged permanently It is important to install and configure all measurement system components correctly It is also important to check the installation to make sure there are no noise sources The automatic error detection and correction implemented in the DF77 helps the flow computer to reduce the measurement uncertainness only in untypical conditions This equipment does not guarantee the system functionality in precarious installation conditions with noise or meter problems Frequent maintenances are extremely important IV Table of Contents TABLE OF CONTENTS DF77 PULSE INPUTS MODULE WITH PROVER SUPPORTI INTRODUCTION tec i eet edet vede er ied Ul He eie ote t WARNINGS
7. Verify if the CPU is configured with an I O scanning cycle of less than 1 second Check the CPU configuration and the rack address The pulse input LED is off The corresponding input has been disabled Verify the CPU configuration The pulse input LED is blinking green The input frequency is out of the configured range Change the configuration in the transducer block in order to correspond to the pulse generator range The configured range is out of the application frequency range Change the CPU configuration The ON LED is red or blinking Some problem has occurred in the power supply Verify the power supply Some internal problem may have occurred in the module Turn off the module and then turn it on In case the problem persists send it to the technical support The FAIL LED is on or blinking Turn off and on the module If the problem persists send the module to the technical support The CPU s configuration may have a problem HC block missing for example The IMB power supply is indicating failure Verify the power supply and possibly other modules on the rack There isn t pulse counting Verify in the CPU s configuration if the configured operation mode of the input or of the groups is correct Verify if the input corresponding LED is green Otherwise check if the pulses are being generated amplitude frequency duty cycle etc The pulse totalization seems to be wrong There is loss
8. gt H H 9k6 2W S Pulse La 151 Ti 4 Pulse B qu P B4 1 4 0 C4 7 Dual pulse m7 AR AGND3 o B5 C5 Figure 2 I O Internal Circuits The DF77 was developed using the most recent technology and must be installed and operated carefully in order to obtain the best results The complete reading and understanding of this manual is fundamental to obtain the best results This equipment has Electrostatic Discharge ESD sensitive components Do not open the module while it is powered or without the appropriate ESD protection Otherwise the circuits can be damaged permanently Things the user should never do Start the installation before reading and understanding this manual In case of doubts please contact our technical support Expose or touch the electronic circuits when the module is powered Touch any internal part without ESD protection wrist trap ionizers etc and appropriate grounding This item also applies to the front terminal Insert metallic objects inside the module when it is powered Connect the signal cable s shield in more than one point Operate the system without appropriate grounding 20 Ohms Operate the equipment in constant noise conditions in the AC network as well as in pulse signals or housing and grounding Install signal cables in the same conduit of the power cables Use signal cables without the shield correctly grounded Start the syste
9. motors inverters etc 14
10. of pulses The showed frequency is incorrect Observe if the cable shield is installed and grounded correctly Verify in the CPU s configuration if the configured operation mode of the input or of the groups is correct single or dual pulse Verify if the frequency is within the configured operation range If in dual pulse mode verify the phase difference of the meter and the one configured at the CPU Check the connections to see if there is bad contact and if the frontal terminal block is well fit If the mode is dual pulse make sure that the connection order of the pulse signals A and B is correct Try to exchange A and B Try to increase the tolerance of the phase difference in the CPU s configuration because the signal can be very irregular The PROV blue LED does not switch on when the CPU requests the proving Verify the CPU s configuration and the rack address The proving operations do not complete with success Check the connections with the prover or Master Meter according to the installation instructions of this manual Observe if the cable shield is installed and grounded correctly Verify if the output for prover starting is connected and polarized correctly you may need to add external resistors Check prover documentation Check the voltage levels and frequency of all inputs Verify if the process is stable temperature pressure flow etc Observe if there is noise source during the proving
11. Pulse transmitter current mode 1 gt 3 5V 0 12V L ll 5x2 Pulse Inputs with Prover Support e Win mD Figure 6 Connecting the Current Pulse Generator Prover Connections The DF77 allows the FC302 to operate with a large variety of provers from conventional ones such as the U type to compact provers The following figures show how to connect the DF77 to the most common types of provers It is important to observe that there is no standard for provers and therefore the following figure should only be used as a reference It is recommended to consult the specific prover documentation before the installation Blocking Meter being proved and drain Piston and Detectors COMPACT 4 Pulses PROVER Optional Temperature and Pressure meters forthe prover Flow Computer Figure 7 Typical Installation for Prover and Flow Computer DF77 Pulse Inputs Module with Prover Support General connection for provers The DF77 operates with compact provers or provers with a large volume such as the U type The figure below shows an example of a general connection There are independent signal interfaces for each detector or a single signal for 2 detectors DF77 Do not forget this Joined detectors Figure 8 General Connection for Provers Connecting the Calibron Syncrotrak compact prover 24 VDC Power Supply External by Customer
12. ce with API 4 and ISO 7278 standards Operation Modes 10 inputs SINGLE PULSE or 5 groups DUAL PULSE with 4 for production measurement and 1 for MASTER METER Dimensions and Weight Dimensions HxWxD 141 50 5 57 x 39 90 1 57 x 137 50 5 41 Net Weight 300 g With package 350 g 12 DF77 Pulse Inputs Module with Prover Support Dimensions Dimensions are in mm inches 163 00 5 84 141 50 5 57 148 50 102 00 4 01 DIN RAIL OOOOOOOOOO 0000000000 136 50 5 37 137 50 5 41 13 DF77 User s Manual Troubleshooting Problem The pulse input LED is always red The input LED is blinking between red and green Solution Verify if there is pulse signal and if it is compatible with the voltage specification and input frequency Check if the logical levels 0 and 1 are in allowed voltage range 0 lt 1 2V and 1 gt 3 5V The cable can be broken or have some bad contact Check the electrical connections in the meter preamplifiers and terminal blocks Verify the polarity of the connection Verify the 1 5 barriers if there is any Verify if the frontal terminal block is well fit In case there are additional protections verify if they are in good conditions The IMB LED is red or blinking
13. ction against ESD and surges Isolation 500 Vrms among the groups 500 Vrms among the groups and the IMB Interface with CPU IMB hot swappable module ID 77 Power supply and consumption 3W 5VDC 5 via IMB maximum ripple of 50 mVpp 600 mA in regime 1A during 1ms on power up Digital pulse filter In all inputs with cut width of T 8 of FREQ_UPPER_RANGE configured individually to each input Low pass filter All inputs cut frequency 3 dB 75 kHz Operation environment 0 C to 60 C 5 to 90 non condensed relative humidity Storage environment 25 C to 80 C 596 to 9096 non condensed relative humidity Indicator LEDs ON bicolor indicates module is powered and operating IMB bicolor indicates active CPU scan PROV blue prove is being executed FAIL red indicates hardware failure in the IMB or in the module A1 B5 bicolor indicates the status of each pulse input Pulse Counters 16 bit provide the accumulated total since the last scanning cycle Average frequency accuracy 0 0196 32 bits of resolution Dual pulse fidelity A level in compliance with API 5 5 and ISO 6551 standards with automatic error detection and correction to coincident pulses phase errors sequence errors counting errors false pulses and missing pulses Interface for volumetric prover Accept the most common prover types conventional U and compacts in complian
14. e transmitter for example response of 10 ms frequency up to 100 Hz See the following example which uses SENSE KD 1 1 Ex barrier Frontal View SENSE Sensores e instrumentos Repetidor Digital KO 11 Ex CPR 214 EC Ru M EO By m m Fone 011 942 0444 Made in Brazil Rear View Pulse Inputs with Prover Support ESSE PSS Sis 5x2 DF77 Figure 12 Pulse Inputs Installation in Hazardous Areas DF77 User s Manual Interface to volumetric prover Discrete inputs IN1 IN2 and IN3 should use digital repeater barriers provided the same restrictions for the pulse inputs OUT1 output should use a digital drive barrier OUT1 is OPEN DRAIN which assures a voltage drop in the output less than 1V 100mA 100V maximum Use a 10k 1 4W resistor as pull up for 24VDC operation See the example in the figure below for the SENSE KD 572T Ex barrier SENSE KD 572T Ex N EHBnmnnnnmm Frontal View OR Ex 91 Tic TA CEPEL EX 194300 Digital Drive Digital Exi Output H ee ene 1 Input Control 1 D Ye a Output 5 1 lt 40mA 3i mes ba Uezav 1 i g e Power On f S a Ye a 8 Xs 1440 v1 riis tr Us2av 12 2 1 2evacs1O Power www sense 4 Tol 85 1 6190 0444 Ad Made in Brazit Exi 1 Output Figure 13 Interface with Volumetr
15. ic Prover in Hazardous Areas 10 DF77 Pulse Inputs Module with Prover Support Example of connection for Calibron Syncrotrak prover with barriers IN1 COM IN2 gt IN3 24vDC Prover interface 24 Vdc Run Run 401 D Interface KD 572T Ex ssasrsssusbrrrrsrtryr 9 1 10 30 49 e 3 Pit ED ca Figure 14 Calibron Syncrotrak Prover in Hazardous Areas IMPORTANT The 24 VDC power supply for the 401D interface have to be isolated from the barriers power supply and from the power supply of the safe side DF77 11 DF77 User s Manual Technical Specifications Number of inputs Technical Specifications 10 of pulse and frequency groups 1 to 5 and 3 discrete group 6 Number of outputs 1 open drain 100 mA 100 V Isolated groups 6 2x5 pulses and frequency 3 1 discrete Operation frequency 5 Hz to 25 kHz duty cycle from 12 5 to 87 5 Voltage input 30 to 60 VAC VDC Schmitt trigger in all inputs Logic level 0 lt 1 2V and logic level 1 gt 3 5V Digital deboucing eliminates the need of installing external capacitors Wave forms Square pulse sinusoidal triangular and trapezoidal Input pull up 490 for 5 VDC internal isolated Input impedance 5 6k Protections Resetable polymeric fusel in all field signals Prote
16. m operation without validating the installation and the pulse totalization devices according to the recommendations in this manual Start the system operation without validating the installation and the proving devices according to the recommendations in this manual DF77 User s Manual Things the user should always do Read the manual carefully before installing and operating the system This step prevents damages and installation delays Use quality grounding system 20 Ohms in the installation connecting cables with appropriate measures and isolation Use shielded twisted pair cables to connect the signals from the field to the module Connect the cable loop to one single point preferably on the base of the mounting panel preserving the loop in the input of the front module Isolate the cable terminal with a thermal shrinking tube to protect the loop Place the loop close ta terminal but do not connect Loop diversion to connect the common grounding bus of the cabinet Figure 3 Suggestion of Connection of the Cables Shield in the Panel Grounding DF77 Pulse Inputs Module with Prover Support Pulse transmitter s connection The DF77 module can be used with different meter types with pulsed output The only condition is that the generated pulses amplitude frequency and duty cycle within the module s operation limits Frequency 5Hz to 25kHz Amplitude VOmax 1V and V1min 4 3V where the transitio
17. n levels are 0 lt 1 2V and 1 gt 3 5V Duty cycle 15 to 85 of period FREQ UPPER RANGE configured in the transducer block Refer to CPU s manual for more details Using preamplifiers The DF77 pulse inputs are not developed for small signal sensors such as magnetic pick ups inductive sensors variable reluctance etc If the flow meter uses this type of sensor a proper preamplifier must be installed between the sensor and the module according to the following figure DF77 Flow meter 5x2 Pulse Inputs with Prover Support 1 3 5V 0 12V I LIL Figure 4 Single Signal Connected to the A2 Pulse Input Dual Pulse Flow Meter 5x2 Pulse Inputs with Prover Support 4 gt 3 5V 0 lt 1 2V Figure 5 Dual Signal Connected to Group 2 A2 B2 Inputs DF77 User s Manual IMPORTANT In the dual pulse example above it is extremely important to observe the pulse sequence A B and configure the correct phase difference in the DF77 transducer block usually 90 The group should also be configured to operate in the dual signal check mode In case there is a lot of variation in the phase difference among the pulses it may be necessary to increase the tolerance in the phase difference verification for a correct totalization Refer to the CPU s manual for more details DF77 100R 300R O co C Cn Co EBEEREERE gt
18. ng The CPU is responsible for maintaining the totalization for larger periods of time Use of advanced programmable logic technology to guarantee reliable and accurate operation with specific hardware for critical functions 10 independent 16 bit totalizers operating in single pulse mode or 5 independent totalizers operating in dual pulse mode The totalizers reading is done simultaneously in each CPU cycle with the counters synchronized In the AuditFlow FC302 system this feature is important for Master Meter MM proving where the totalization value for the meter in prove and the MM must be obtained in same instant On the dual pulse mode the DF77 automatically detects and corrects level A errors related to gt Coincident pulses gt Sequence error gt Phase difference error gt Missing pulses gt Additional pulses gt Coincident pulses phase errors sequence errors and additional pulses errors are automatically ignored in the totalization being computed by counters that are individual for each type of error which are available in the CPU transducer block gt Detected missing pulses are automatically counted gt If one of the signals is lost the totalization will continue only with the remaining signal without error detection and correction The prover support includes Connection to any prover that detects the beginning and the end of the calibrated section compact U type etc Open drain output con
19. trolled by the flow computer FC302 to start proving Dual chronometry implementation for pulse interpolation with counters operating at 50MHz providing excellent resolution Proving does not interfere in the totalization since it is executed by independent specific hardware configuration of this mode depends on the CPU used Refer to the CPU s manual for further details DF77 User s Manual Description of the Front Panel LEDs LED Siatus Description Green The module is powered the HOT SWAP circuit is operating correctly and the FPGA initialization sequence was successful ON The module is powered via IMB 5V but the FPGA initialization Red ON sequence was not successful The FPGA may not have been programmed yet It may have some internal problem OFF There is no power on the IMB or the HOT SWAP circuit failed IMB Green ON The CPU is scanning the module with acceptable periodicity Red ON or blinking The CPU is not scanning the module with acceptable periodicity PROV Blue ON Proving is being executed OFF There is no proving being executed Red ON Hardware failure the CPU and or the power supply indicate failure in FAIL the IMB HC block missing power failure OFF No hardware failure The corresponding input is continuously receiving the pulse train with Green ON frequency within the configured range with configuration FREQ_LOWER_RANGE and FREQ_UPPER_RANGE of PIP block
Download Pdf Manuals
Related Search