Model RFT9739 Field-Mount Transmitter Instruction Manual Version 3 Transmitters February 2000
Model RFT9739 Field-Mount Transmitter Instruction Manual Version 3 Transmitters For technical assistance, phone the Micro Motion Customer Service Department: • In the U.S.A., phone 1-800-522-6277, 24 hours • Outside the U.S.A., phone 303-530-8400, 24 hours • In Europe, phone +31 (0) 318 549 443 • In Asia, phone 65-770-8155 Copyright ©2000, Micro Motion, Inc. All rights reserved. Micro Motion, ELITE, and ProLink are registered trademarks of Micro Motion, Inc., Boulder, Colorado.
Contents 1 Before You Begin 1.1 1.2 .............................. About this manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . About the transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1 1 2 Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.1 2.2 2.3 Hazardous area installations . . . . . . . . . . . . . . . . . . . . Installations in Europe . . . . . . . . . . . . . . . . . . . . . . . . .
Contents continued 5 Output Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.8 5.9 5.10 General guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . Maximum wire length . . . . . . . . . . . . . . . . . . . . . . . . . . Primary and secondary mA outputs. . . . . . . . . . . . . . . Connections for HART® communication devices. . . . . Frequency/pulse output . . . . . . . . . . . . . . . . . . . . . . . . Default configuration . . .
Contents continued 7 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 7.1 7.2 7.3 7.4 7.5 7.6 7.7 7.8 7.9 General guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . Transmitter diagnostic tools. . . . . . . . . . . . . . . . . . . . . Diagnostic LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fault outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Diagnostic messages . . . . . . . . . . . . . . . . . . . . . . . . .
Contents continued Tables Table 2-1 Table 2-2 Table 4-1 Table 5-1 Table 5-2 Table 5-3 Table 6-1 Table 6-2 Table 6-3 Table 6-4 Table 7-1 Table 7-2 Table 7-3 Table 7-4 Table 7-5 Table 7-6 Table 7-7 Table 7-8 Security modes . . . . . . . . . . . . . . . . . . . . . . . . . Communications configuration . . . . . . . . . . . . . Terminal designations . . . . . . . . . . . . . . . . . . . . Output wiring terminal designations . . . . . . . . . Peripheral wiring diagrams . . . . . . . . . . . . . . . .
Contents continued Figures Figure 1-1 Figure 2-1 Figure 2-2 Figure 3-1 Figure 3-2 Figure 4-1 Figure 4-2 Figure 4-3 Figure 4-4a Figure 4-4b Figure 4-5 Figure 4-6 Figure 4-7 Figure 5-1 Figure 5-2 Figure 5-3 Figure 5-4 Figure 5-5 Figure 5-6 Figure 5-7 Figure 5-8 Figure 5-9 Figure 5-10 Figure 5-11 Figure 5-12 Figure 5-13 Figure 5-14a Figure 5-14b Figure 5-15a Figure 5-15b Figure 5-16 Figure 5-17a Figure 5-17b Figure 5-18a Figure 5-18b Figure 5-19 Figure 5-20a Figure 5-20b Figure 5-20c Figure 5-21 Figure 5-22 F
Contents continued Figure 7-1 Figure 7-2 Diagnostic LED and communicator loops . . . . . 64 HART® Communicator, ProLink® PC-Interface, and AMS modem connections . . . . . . . . . . 67 Figures in appendixes Figure C-1 Figure D-1 Figure E-1 Figure F-1 Figure G-1 Figure G-2 Figure G-3 vi Coriolis mass flow sensor . . . . . . . . . . . . . . . . . On-line menu. . . . . . . . . . . . . . . . . . . . . . . . . . . Label number 3002168 . . . . . . . . . . . . . . . . . . . Switches on RFT9739 transmitters . .
Before You Begin About this manual Getting Started 1.
Before You Begin continued Figure 1-1.
Getting Started Hazardous area installations Getting Started 2.1 Before You Begin 2 WARNING Failure to comply with requirements for intrinsic safety in a hazardous area could result in an explosion. Mounting • Install the transmitter in an environment that is compatible with the hazardous area specified on the approvals tag. See Figure 2-1. • For intrinsically safe installations, use this document with Micro Motion UL, CSA, or SAA installation instructions.
Getting Started continued Installations in Europe To comply with CENELEC standards for hazardous area installations in Europe, adhere to the following CENELEC conditions for safe use. Cable glands and conduit seals • Use 3/4"-14 NPT cable glands or conduit fittings, rated flameproof for EEx d IIC areas and certified by an authorized test station. Flameproof glands supplied by Micro Motion meet these requirements. • Conduit openings that are not used should be sealed with blanking plugs of type PLG 2.
Before You Begin Getting Started continued 2.3 Switch settings Switches 1 through 10 are illustrated in Figure 2-2, and described in the following sections. Normally, switch settings do not require adjustment. Security modes For information about security mode 8, see pages 6 through 8. Output Wiring Table 2-1 lists the parameters that are write-protected and functions that are disabled for each security mode. Security modes 1 through 7 are entered immediately when switches 1 through 3 are set.
Getting Started continued Table 2-1.
Power-Supply and Sensor Wiring Output Wiring To verify the transmitter is in security mode 8: • If the transmitter has a display, use the Scroll knob to scroll through process variable screens to event register screens. If event register screens appear, the transmitter is in security mode 8. For more information about using the Scroll knob and transmitter display, see Section 6.2, page 51. • If the transmitter does not have a display: 1. Configure the transmitter. 2.
Getting Started continued To make changes to configuration or calibration parameters once security mode 8 is entered: 1. Set switches 1, 2, and 3 to the OFF position. 2. Make changes through digital communication or, if the transmitter has a display, with the Scroll and Reset knobs (see "Communication configuration mode," page 54). Custody transfer event registers record changes made to defined configuration and calibration parameters (see Table 6-2, page 56).
Before You Begin Getting Started continued Communication settings Switch 5 enables the user to choose the standard communication configuration or user-defined parameters. With switch 10 in the ON (CONFIG) position, switches 1 through 6 can be used for setting userdefined communication parameters. Mounting For RFT9739 software versions 3.
Getting Started continued Table 2-2. Communications configuration Instructions Before beginning, make note of the positions of switches 1, 2, and 3. Then, for each setting: 1. Begin with switch 10 in the CONFIG position, and switches 1 through 6 in the OFF position. The LED flashes ON 3 times and pauses, which indicates the transmitter is in the communication configuration mode. 2. Set designated switches to the ON position as indicated below. 3.
Transmitter Mounting General guidelines Mounting Follow these guidelines when installing the field-mount RFT9739 transmitter: • Locate the transmitter where it is accessible for service and calibration. • In hazardous areas, install the transmitter in a location that is specified in Section 2.1, page 3. • Total length of cable from the sensor to the transmitter must not exceed 1000 feet (300 meters). • Locate the transmitter where the ambient temperature remains between –22 and 131°F (–30 and 55°C).
Transmitter Mounting continued 3.2 Mounting to a wall Follow these guidelines and refer to Figure 3-1 to mount the transmitter to a wall or other flat, rigid surface. • Use four 5/16-inch diameter (or M8) bolts and nuts to mount the transmitter to a wall or other flat, rigid surface. Use bolts and nuts that can withstand the process environment. Micro Motion does not supply bolts or nuts (such bolts and nuts are available as an option).
3.3 Mounting to an instrument pole Getting Started Follow these guidelines and refer to Figure 3-2 to mount the transmitter to an instrument pole: • Use two 5/16-inch U-bolts for 2-inch pipe, and four matching nuts, to mount the transmitter to a rigid instrument pole. Use U-bolts and nuts that can withstand the process environment. Micro Motion does not supply U-bolts or nuts. • The instrument pole should extend at least 12 inches (305 mm) from a rigid base, and be no more than 2 inches (50.
14 RFT9739 Field-Mount Transmitter Instruction Manual
Power-Supply and Sensor Wiring General guidelines Getting Started 4.1 Before You Begin 4 WARNING Failure to comply with requirements for intrinsic safety in a hazardous area could result in an explosion. Sensor wiring is intrinsically safe. Mounting Power-Supply and Sensor Wiring • Keep intrinsically safe sensor wiring separated from power-supply wiring and output wiring. • For intrinsically safe sensor installations, use this document with Micro Motion UL, CSA, or SAA installation instructions.
Power-Supply and Sensor Wiring continued The base of the transmitter has three ¾-inch NPT female conduit openings, indicated in Figure 4-1, which must remain sealed to keep the transmitter watertight. • Use conduit that allows a complete seal with the conduit openings. • If possible, orient the transmitter with its conduit openings pointed downward. Seal the conduit to prevent condensation and other moisture from entering the housing.
Installations in Europe Getting Started To comply with CENELEC standards for hazardous area installations in Europe, adhere to the following CENELEC conditions for safe use: • Use 3/4"-14 NPT cable glands or conduit fittings, rated flameproof for EEx d IIC areas and certified by an authorized test station. Flameproof glands supplied by Micro Motion meet these requirements. • Conduit openings that are not used should be sealed with blanking plugs of type PLG 2.
Power-Supply and Sensor Wiring continued 4.2 Power supply and grounding CAUTION Incorrect voltage, or installation with power supply on, will cause transmitter damage or failure. • Turn off power before installing transmitter. • Match power-supply voltage with voltage indicated in transmitter power terminals compartment. 18 Power-supply options The AC transmitter accepts an 85 to 250 VAC power supply. The DC transmitter accepts a 12 to 30 VDC power supply.
Before You Begin Power-Supply and Sensor Wiring continued Figure 4-3. Power-supply wiring terminals Getting Started Equipment ground Equipment ground Power-supply conduit opening Terminal labels L N − + Power-Supply and Sensor Wiring Grounding Mounting Transmitter power rating 85-250 VAC 50/60 Hz 12-30 VDC WARNING Failure to comply with requirements for intrinsic safety in a hazardous area could result in an explosion. • The transmitter must be properly grounded.
Power-Supply and Sensor Wiring continued Figure 4-4a. Grounding detail — typical I.S. ground terminals If national standards are not in effect, adhere to these guidelines for grounding: • Use copper wire, 14 AWG (2.5 mm²) or larger wire size. • Keep all ground leads as short as possible, less than 1 ohm impedance. • Connect I.S. ground terminals directly to internal case ground terminal. • Connect ground lead from power ground terminal directly to earth ground.
4.3 Sensor wiring Cable connections to sensor and transmitter Getting Started The instructions in this section explain how to connect a fully prepared Micro Motion flowmeter cable to the RFT9739 and a sensor. The sensor can be a Micro Motion ELITE, F-Series, Model D, DT, or DL sensor. • The procedure for preparing Micro Motion flowmeter cable and cable glands is described in the instructions that are shipped with the cable. • Install cable and wiring to meet local code requirements.
Power-Supply and Sensor Wiring continued The wiring procedure is the same for the sensor and transmitter. Refer to the hazard statements on page 21 and the wiring diagrams below and on page 23, and follow these steps: 1. Insert the stripped ends of the individual wires into the terminal blocks. No bare wires should remain exposed. • At the sensor, connect wiring inside the sensor junction box.
Before You Begin Power-Supply and Sensor Wiring continued Figure 4-6. Wiring to F-Series, Model D, and DL sensors Flowmeter cable Field-mount RFT9739 terminals Maximum cable length 1000 ft.
24 RFT9739 Field-Mount Transmitter Instruction Manual
Output Wiring General guidelines Getting Started 5.1 Before You Begin 5 WARNING Failure to comply with requirements for intrinsic safety in a hazardous area could result in an explosion. Mounting Output wiring is not intrinsically safe. • Keep output wiring separated from power-supply wiring and intrinsically safe sensor wiring. • Follow all output wiring instructions to ensure transmitter and any connected devices will operate correctly.
Output Wiring continued Figure 5-1. Output terminals Table 5-1.
5.3 Primary and secondary mA outputs Mounting The mA outputs can produce a user-selected 0-20 or 4-20 mA current. (See "Milliamp output scaling," page 9). • When configured to produce 4-20 mA current, the mA output loop can supply loop-powered process indicators. • For transmitters with software version 3.8 or higher, when configured to produce 4-20 mA current, the mA outputs are compliant with the NAMUR NE43 standard. (All RFT9739 transmitters shipped after November 1999 have software version 3.
Output Wiring continued Use RFT9739 terminals 17 and 18 for the primary mA output. Use terminals 19 and 20 for the secondary mA output. See Figure 5-3. • Primary and secondary mA output loops are isolated and floating. Additional grounding will result in optimum performance, and optimum HART communication on the primary mA output. Ensure that mA output loops are grounded properly, either at the transmitter end, or at the external device.
Connections for HART® communication devices Figure 5-4. HART® Communicator, ProLink® PC-Interface, and AMS modem connections Getting Started Figure 5-4 illustrates how to connect a HART Communicator, the ProLink PC-Interface adaptor, or an AMS serial modem to the RFT9739 for digital communication over the primary mA output. For information about using the HART Communicator or ProLink program, see the appropriate instruction manual.
Output Wiring continued 5.4 Frequency/pulse output The RFT9739 frequency/pulse output represents the flow rate or flow total, independent of the primary and secondary mA outputs. The frequency/pulse output can be used with any Micro Motion peripheral device except the DMS Density Monitoring System and the PI 4-20 Process Indicator, which do not have frequency inputs.
When the RFT9739 is shipped from the factory, the frequency/pulse output is internally powered by an isolated 15-volt source via a 2.2 kohm pull-up resistor. This internal current is limited to approximately 7 mA. See Figure 5-5. Configuration for increased current In some applications, it might be necessary to increase the current in the frequency/pulse output circuit. See Section 5.2, page 25. For increased current, add a 1 to 3 kohm resistor across terminals 14 and 15, as illustrated in Figure 5-6.
Output Wiring continued Configuration for constant current Applications with high capacitance loading will benefit by wiring the frequency/pulse output circuit to maintain a constant current source of 50 mA for any load between 0 and 220 ohms. This configuration renders the control output circuit inoperable. For constant current, add a jumper across terminals 14 and 15, and a 100 to 250 ohm resistor at the PLC or pulse-counter end of the cable, as illustrated in Figure 5-7.
Configuration for open collector mode Mounting To configure the output for open collector mode, a resistor must be clipped as described below. This procedure will permanently alter the transmitter and cannot be reversed. • Clip resistor R14 (R1 on models with enhanced EMI immunity) and add an external DC power supply and a pull-up resistor. See Figure 5-8. • The pull-up resistor must be of sufficient value to limit loop current to less than 0.
Output Wiring continued Figure 5-8. Frequency/pulse output wiring for open collector mode FREQ+ (signal line) PLC or pulse counter RETURN (ground) Resistor (See note) DC power supply RFT9739 output terminals Resistor must be of sufficient value to limit loop current to less than 0.1 ampere, depending on total loop resistance. Figure 5-9.
5.5 Control output Mounting Power-Supply and Sensor Wiring Use RFT9739 terminals 22 and 16 for the control output. The control output, frequency/pulse output, and external zero input share terminal 16 as a common return. See Figure 5-10. • When configured to indicate flow direction, the output is high (+15 V) when indicating forward flow, and low (0 V) when indicating reverse flow.
Output Wiring continued Control output in open collector mode The RFT9739 provides current to the control output circuit. In applications where this current must be permanently suspended, and for receiving devices that require input voltage higher than approximately 10 volts, the control output circuit can be used in open collector mode. If the frequency/pulse output is configured for constant current (see "Configuration for open collector mode," page 33), the control output is rendered inoperable.
Before You Begin Output Wiring continued Figure 5-11. Control output wiring for open collector mode Resistor (See note) Getting Started Receiving device DC power supply RFT9739 output terminals Mounting Resistor must be of sufficient value to limit loop current to less than 0.1 ampere, depending on total loop resistance. Power-Supply and Sensor Wiring Figure 5-12.
Output Wiring continued 5.6 Peripheral device wiring The wiring diagrams listed in Table 5-2 illustrate connections from the transmitter to Micro Motion peripheral devices. Table 5-2.
Before You Begin Output Wiring continued Figure 5-14a. Wiring to DRT with LED DRT LED terminals RFT9739 output terminals Getting Started Clip shields at this end Earth ground Mounting Figure 5-14b.
Output Wiring continued Figure 5-15a. Wiring to FMS-3 with LED FMS-3 LED terminals RFT9739 output terminals Clip shields at this end Earth ground Figure 5-15b.
Before You Begin Output Wiring continued Figure 5-16. Wiring to NFC RFT9739 output terminals Getting Started NFC terminals Note 1 Note 1 Mounting Note 2 Note 2 Earth ground Note 1 Power-Supply and Sensor Wiring 1. Clip shields at this end. 2. This wire not terminated.
Output Wiring continued Figure 5-17a. Wiring to AC-powered NOC RFT9739 output terminals NOC terminals Note 1 Note 2 Note 1 Note 2 Earth ground Note 1 1. Clip shields at this end. 2. This wire not terminated. Figure 5-17b. Wiring to DC-powered NOC RFT9739 output terminals NOC terminals Note 1 Note 2 Note 2 Note 1 Note 1 Earth ground 1. Clip shields at this end. 2. This wire not terminated.
Before You Begin Output Wiring continued Figure 5-18a. Wiring to Model 3300 with screw-type or solder-tail terminals RFT9739 output terminals Getting Started Model 3300 terminals Clip shields at this end Mounting Earth ground Power-Supply and Sensor Wiring Figure 5-18b. Wiring to Model 3300 with I/O cable Clip shields at this end Model 3300 terminals Earth ground Output Wiring RFT9739 output terminals Figure 5-19.
Output Wiring continued 5.7 Pressure transmitter wiring WARNING Failure to comply with requirements for intrinsic safety in a hazardous area could result in an explosion. Pressure transmitter wiring is not intrinsically safe. • Keep pressure transmitter wiring separated from powersupply wiring, intrinsically safe sensor wiring, and any other intrinsically safe wiring. • Make sure the safety barrier partition is in place before operating the transmitter.
If the pressure transmitter requires a power supply greater than 11.75 V, or if other loop devices are required, an external source can power the pressure transmitter. Use RFT9739 terminals S and 23. Terminal S (MA SIG IN) is the signal input to the RFT9739, and terminal 23 (SIGNAL GND) is the return, as shown in Figure 5-20b. Figure 5-20a.
Output Wiring continued Figure 5-20c. Wiring to pressure transmitter — digital communications WARNING: Pressure transmitter wiring is not intrinsically safe Pressure transmitter SMART only (1150 or 3051) 250 ohm ±5%, 0.5 W 250 ohm ±5%, 0.5 W 24 VDC RFT9739 output terminals 5.8 Remote-zero switch Power supply The transmitter can be configured to allow transmitter zeroing from an external switch.
Before You Begin Output Wiring continued 5.9 RS-485 multidrop network Getting Started The RFT9739 can be configured to communicate for any one of the following options: • HART protocol over the RS-485 standard • HART protocol over the Bell 202 standard • Modbus protocol over the RS-485 standard • Modbus protocol over the RS-485 standard and HART protocol over the Bell 202 standard For communications configuration instructions, see "Communication settings," page 9.
Output Wiring continued Figure 5-22. RS-485 wiring One RFT9739 and a host controller A Host controller B See note See note 27 26 RFT9739 Multiple RFT9739s and a host controller A Host controller B See note See note 27 26 27 26 RFT9739 27 RFT9739 26 RFT9739 For long-distance communication, or if noise from an external source interferes with the signal, install 120-ohm ½-watt resistors across terminals of both end devices. 5.
Figure 5-23. Typical HART® network wiring RFT9739 field-mount PV+ 17 PV– 18 RFT9739 rack-mount PV+ PV– CN2- CN2Z30 D30 SMART FAMILY transmitter SMART FAMILY transmitter DC source required for other HART 4-20mA passive transmitters 250 ohm load 4-20mA IFT9701 R-Series 24 DC Power-Supply and Sensor Wiring 4-20mA Mounting HART Communicator, ProLink PCI, or AMS modem Getting Started To connect the transmitter to a Bell 202 network, use RFT9739 terminals 17 and 18. See Figure 5-23.
50 RFT9739 Field-Mount Transmitter Instruction Manual
Startup Initialization After wiring has been connected, power can be supplied to the transmitter. During initialization, the diagnostic LED on the electronics module remains on continuously, while the transmitter performs a selfdiagnostic. After initialization is completed, the LED blinks ON once per second to indicate proper operation of the transmitter.
Startup continued Adjusting the sight window The sight window in the transmitter housing cover enables the user to view the LCD on the electronics module inside the housing. After the cover has been put in place, the sight window might not be properly aligned for viewing the display. To align the sight window, rotate the adjustable faceplate in either direction until the entire display is visible. Micro Motion recommends mounting the transmitter with its conduit openings pointed downward.
Before You Begin Startup continued Table 6-1. Display screens Abbreviation in upper left corner of screen (RATE) (RATE) (DENS) (TEMP) (TOT) (TOT) (INV) (INV) (DP) or (P) (CONFIG REG) (CALIBRATE REG) (DISPLAY TEST) –– 1 While reading total (TOT) or inventory (INV) screens, use the unit of measure in the lower left corner to distinguish between mass and volume. 2 Screen appears only when transmitter is configured to indicate pressure.
Startup continued Communication configuration mode Switch 5 on the transmitter electronics module allows the user to select the standard communication configuration or establish a user-defined configuration. The communication configuration mode allows the user to configure the transmitter's digital output using the display and the Scroll and Reset knobs. • If switch 5 is in the USER DEFINED position (see Section 2.
CAUTION Getting Started M3 — Data bits, protocol, and physical layer The M3 screen enables selection of 7-bit or 8-bit mode for Modbus protocol, or 8-bit mode for HART protocol. • The HART protocol can use either the Bell 202 or RS-485 physical layer. • Using HART protocol over the primary mA output requires the Bell 202 physical layer.
Startup continued 6.3 Custody transfer event registers Event registers are provided for security requirements for custody transfer applications. When the transmitter is configured for security mode 8 (see Section 2.3, page 5), the transmitter meets security requirements for custody transfer described in National Institute of Standards and Technology (NIST) Handbook 44. Custody transfer event registers record one change for each change "session.
Before You Begin Startup continued 6.4 Flowmeter zeroing CAUTION Zero the flowmeter before putting the flowmeter in operation. Flowmeter zeroing establishes flowmeter response to zero flow and sets a baseline for flow measurement. Zeroing procedure Getting Started Failure to zero the flowmeter at initial startup could cause the transmitter to produce inaccurate signals. To zero the transmitter, follow these steps: 3. Ensure zero flow through the sensor. Power-Supply and Sensor Wiring 2.
Startup continued 4. Zero the transmitter in any of five ways: • Press and hold the ZERO button for at least ten seconds or until the LED remains on continuously. Figure 6-1, page 58, shows the location of the button on the electronics module. • If the transmitter has a display, use the Scroll knob to advance to the mass flow rate screen or volume flow rate screen, then rotate and hold the Reset knob for at least ten seconds. (In the rate screens, "RATE" appears in the upper left corner of the screen.
Diagnosing zero failure An error condition could indicate: • Flow of fluid during transmitter zeroing • Partially empty flow tubes • An improperly mounted sensor Getting Started If zeroing fails, the LED blinks ON four times per second to indicate an error condition. If the transmitter has a display, the blinking "Msg" (message) indicator appears. The message screen will indicate the zero failure with a message such as "*ZERO ERROR*", "*ZERO TOO HIGH*", or "*ZERO TOO LOW*".
Startup continued 6.5 Totalizer control The transmitter's mass totalizer and volume totalizer can be started, stopped, and reset using any of the following: • A HART Communicator • ProLink software version 2.4 or higher • A Modbus device • AMS software In addition, the totalizer can be reset using the Scroll and Reset knobs on the transmitter housing cover, if the RFT9739 has a display. WARNING When the totalizers are stopped, the frequency/pulse output is disabled.
Before You Begin Startup continued 6.6 Process measurement WARNING Getting Started Operating the transmitter without covers in place exposes electrical hazards that can cause property damage, injury, or death. Make sure the safety barrier partition, electronics module cover, and housing cover are securely in place before operating the transmitter. After flowmeter zeroing has been completed as described in Section 6.4, page 57, the flowmeter is ready for process measurement.
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Troubleshooting General guidelines Getting Started 7.1 Before You Begin 7 Troubleshooting a Micro Motion flowmeter is performed in two parts: 1. Tests of wiring integrity 2. Observation of the transmitter's diagnostic tools, which include the diagnostic LED, diagnostic messages, and fault output levels CAUTION Mounting During troubleshooting, the transmitter could produce inaccurate flow signals. Set control devices for manual operation while troubleshooting the flowmeter.
Troubleshooting continued Follow these general guidelines when troubleshooting a Micro Motion flowmeter: • Before beginning the diagnostic process, become familiar with this instruction manual and with the instruction manual for the sensor. • While troubleshooting a problem, leave the sensor in place, if possible. Problems often result from the specific environment in which the sensor operates. • Check all signals under both flow and no-flow conditions.
Fault outputs The RFT9739 has downscale and upscale fault outputs. (See "Milliamp output scaling," page 9.) Fault output levels are listed in Table 7-2.
Troubleshooting continued 7.3 Interrogation with a HART® device Connect a HART Communicator to the communicator hookup loops indicated in Figure 7-1, or use the ProLink or AMS programs to communicate with the transmitter. • If the HART Communicator does not offer RFT9739 "Dev v4" as a device description, the communicator memory module needs to be upgraded. • Use ProLink software version 2.3 or higher.
Before You Begin Troubleshooting continued Figure 7-2. HART® Communicator, ProLink® PC-Interface, and AMS modem connections Field-mount RFT9739 Getting Started PV terminals 17 and 18 Communicator loops (same circuit as PV terminals) HART Communicator, ProLink PCI, or AMS modem PV+ R3 (Note 3) Communicator loops or PV terminals R2 Mounting R1 (Note 1) DCS or PLC with internal resistor (Note 2) PV– CAUTION Power-Supply and Sensor Wiring 1.
Troubleshooting continued 7.
Overrange and sensor error messages To interpret overrange and sensor error messages, use the transmitter's fault output levels, a digital multimeter (DMM) or other reference device, and refer to Table 7-4 for corrective actions. Slug flow Programmed slug flow limits enable transmitter outputs and the display to indicate conditions such as slug flow (gas slugs in a liquid flow stream).
Troubleshooting continued Table 7-4. Using overrange and sensor error messages Instructions 1. Turn off power to the transmitter. 2.
Before You Begin Troubleshooting continued Informational messages Information messages are described below. Table 7-6 summarizes informational messages and lists typical corrective actions. Cal in Progress indicates flowmeter zeroing in progress or density calibration in progress. Getting Started Power Reset indicates a power failure, brownout, or power cycle has interrupted operation of the transmitter. The transmitter has a nonvolatile memory, which remains intact despite power interruptions.
Troubleshooting continued Table 7-6.
Before You Begin Troubleshooting continued Power supply Check for specified power at the transmitter terminals. • If the transmitter power terminals are labeled "L" (line) and "N" (neutral), the transmitter accepts an 85-250 VAC power supply. • If the transmitter power terminals are labeled "+" (positive) and "–" (negative), the transmitter accepts a 12-30 VDC power supply. • Check all fuses. 7.
Troubleshooting continued 7.7 Master reset CAUTION All configuration data will be lost by performing a master reset. Before performing a master reset, phone the Micro Motion Customer Service Department: • In the U.S.A., phone 1-800-522-6277, 24 hours • Outside the U.S.A., phone 303-530-8400, 24 hours • In Europe, phone +31 (0) 318 549 443 • In Asia, phone 65-770-8155 Use the switches on the transmitter electronics module to perform a master reset.
Before You Begin Troubleshooting continued Table 7-8. Default values after a master reset Characterization variables Default 1.00005.13 Default 1.0 1.0 1.0 No DP CELL! 0.00 psi 1000.00 psi 0.00% per psi 0.00 g/cc per psi 0.00 psi Default g/sec l/sec g/cc Temperature unit Pressure unit Default °C psi Default 0.00 g/sec 0.0000 l/sec Forward only 0.80 sec Low slug flow limit High slug flow limit Internal damping on density Internal damping on temperature Default 0.0000 g/cc 5.0000 g/cc 2.00 sec 4.
Troubleshooting continued 7.8 Additional information about troubleshooting For more information about troubleshooting the RFT9739 transmitter, see any of the following instruction manuals or AMS on-line help: • Using the HART Communicator with Micro Motion Transmitters • Using ProLink Software with Micro Motion Transmitters • Using Modbus Protocol with Micro Motion Transmitters 7.9 Customer service For technical assistance, phone the Micro Motion Customer Service Department: • In the U.S.A.
Appendix A RFT9739 Specifications Performance specifications Sensor model Mass flow accuracy* ELITE liquid gas ±0.10% ± [(zero stability / flow rate) x 100]% of rate ±0.50% ± [(zero stability / flow rate) x 100]% of rate F-Series liquid gas ±0.20% ± [(zero stability / flow rate) x 100]% of rate ±0.70% ± [(zero stability / flow rate) x 100]% of rate D (except DH38), DT and DL liquid gas ±0.15% ± [(zero stability / flow rate) x 100]% of rate ±0.
RFT9739 Specifications continued Functional specifications Output Signals Analog Two independently configured analog outputs, designated as primary and secondary, can represent mass or volumetric flow rate, density, temperature, event 1 or event 2. These outputs cannot be changed from active to passive. With a pressure transmitter, outputs can also provide indication for pressure. Internally powered, can be selected as 4-20 mA or 0-20 mA current outputs.
RFT9739 Specifications continued Communication Switch allows selection of preset or user-defined settings. • Default preset-settings: HART protocol over Bell 202, on the primary mA output, 1200 baud; Modbus protocol in RTU mode, on the RS-485 output, 9600 baud; 1 stop bit, odd parity. • Default user-defined settings: HART protocol, on the RS-485 output, 1200 baud, 1 stop bit, odd parity. Bell 202 signal is superimposed on primary variable mA output, and is available for host system interface. Frequency 1.
RFT9739 Specifications continued Pressure compensation The analog input can accept a signal from a pressure transmitter for pressure compensation of flow and density. Range, 0-25 mA. Can be used to power independent pressure or differential pressure transmitter. Voltage sourcing capability, 15 V. Input impedance, 100 ohms. Low-flow cutoff Flow values below the low-flow cutoff cause digital and frequency outputs to default to zero flow levels.
RFT9739 Specifications continued Power supply options and fuses 85 to 250 VAC, 48 to 62 Hz, 10 watts typical, 15 watts maximum, fused with IEC 127-3 400mA/250V, time-lag, subminiature. All AC-powered RFT9739 transmitters comply with low-voltage directive 73/23/EEC per IEC 1010-1 with Amendment 2. 12 to 30 VDC, 7 watts typical, 14 watts maximum, fused with IEC 127-3 1.6A/125V, time-lag, subminiature. At startup, transmitter power source must provide a minimum of 1.
RFT9739 Specifications continued Hazardous area classifications Without display When properly installed with an approved sensor, the RFT9739 fieldmount transmitter can be installed in the following areas: UL and CSA Transmitter: Class I, Div. 1, Groups C and D. Class II, Div. 1, Groups E, F, and G explosion proof when installed with approved conduit seals. Otherwise, Class I, Div. 2, Groups A, B, C, and D. Outputs: Provides nonincendive sensor outputs for use in Class I, Div.
RFT9739 Specifications continued Physical specifications Housing NEMA 4X (IP65) epoxy polyester painted cast aluminum Weight 12.5 lb (5.
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Appendix B Ordering Information RFT9739 model number matrix Code Transmitter model RFT9739 RFT9739 transmitter Code Housing options E D Field mount, without display, NEMA 4X, explosion-proof Field mount, with display, NEMA 4X Code Power supply 4 5 85 to 250 VAC 20 to 30 VDC Code Configuration S E Standard Enhanced EMI immunity (CE compliant) — requires installation with Micro Motion cable type CPLTJ or CFEPJ installed in conduit, or type CPLTS, CPLTA, CFEPS, or CFEPA installed with approved c
Ordering Information continued Micro Motion instruction manuals 86 Sensors • ELITE® Sensor Instruction Manual • R-Series Flowmeter Instruction Manual • R-Series Flowmeter with FOUNDATION™ fieldbus • T-Series Flowmeter Instruction Manual • F-Series Sensor Instruction Manual • Model D and DT Sensors Instruction Manual • Model DL Sensor Instruction Manual Transmitters • ALTUS™ Installation Manual • ALTUS™ Detailed Setup Manual • ALTUS™ Density Applications Manual • ALTUS™ Net Oil Computer Manual • Install
Appendix C Theory of Operation The flow tubes of the Coriolis mass flow sensor are driven to vibrate at their natural frequency by a magnet and drive coil attached to the apex of the bent tubes (see Figure C-1). An AC drive control amplifier circuit in the transmitter reinforces the signal from the sensor’s left velocity pickoff coil to generate the drive coil voltage.
Theory of Operation continued Mass flow measurement The vibrating motion of the flow tube, combined with the momentum of the fluid flowing through the tubes, induces a Coriolis force that causes each flow tube to twist in proportion to the rate of mass flow through the tube during each vibrational cycle. Since one leg of the flow tube lags behind the other leg during this twisting motion, the signals from sensors on the two tube legs can be compared electronically to determine the amount of twist.
Theory of Operation continued ρo = ρs * exp[– α∆T (1 + 0.8α∆T )] where: ρo ρs ∆T α = = = = operating density standard density temperature difference from base (standard) temperature K0 /(ρs )2 + K1 /ρs , where K0 and K1 are constants The equation is iterative, and requires significant calculation time to generate one reading. The transmitter software contains a simplification of this correlation to maximize sampling frequency of the measurement. Accuracy of the Micro Motion correlation is ±0.
Theory of Operation continued Pressure compensation A pressure transmitter can be connected to the RFT9739 for pressure compensation. The RFT9739 or an external source can supply power to the pressure transmitter. If the input is configured to indicate gauge pressure, the transmitter uses the pressure input to account for effects of pressure on the flow tubes of certain sensors. Not all sensors are affected by pressure.
Appendix D HART Communicator Menu Trees ® Figure D-1.
HART Communicator Menu Trees continued ® Figure D-1.
HART Communicator Menu Trees continued ® Fast key Function/variable Analog output 1 Analog output 2 Analog 1 range values Analog 2 range values Auto zero Basic setup Calibration Characterize sensor Control output Date Density calibration factors Density calibration procedure Density variables Descriptor Device ID Device information Detailed setup Device information Diagnostics and service Events Fault output Field device variables Final assembly number Fix analog output 1 Fix analog output 2 Fix frequency
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Appendix E Label Maintenance and Replacement Maintaining and replacing labels Micro Motion product safety labels have been designed in accordance with the voluntary standard, ANSI Z535.4. If any of the labels on the transmitter is illegible, damaged, or missing, promptly have new ones installed. The transmitter includes the safety label illustrated below. Contact Micro Motion for replacement labels: • In the U.S.A., phone 1-800-522-6277 • Outside the U.S.A.
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Appendix F Transmitter Version Identification To identify a Version 3 RFT9739 field-mount transmitter: 1. Unscrew the cover from the base of the transmitter's explosion-proof housing. 2. Inside the transmitter is an electronics module, which has terminal blocks for intrinsically safe and non-intrinsically safe wiring connections. A Version 3 transmitter has an electronics module that is different than older versions. Earlier versions of the module have switches labeled SELECT, CONTROL, and EXT.ZERO.
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Appendix G Replacing Older Transmitters Step 1 Disconnecting the old transmitter WARNING Hazardous voltage can cause severe injury or death. Shut off power before disconnecting the transmitter. CAUTION Process control will stop when the transmitter is disconnected. Set control devices for manual operation before disconnecting the transmitter. Follow these steps to wire the RFT9739 in place of the old transmitter: a. Shut off power to the transmitter. b. Open the transmitter wiring compartment covers.
Replacing Older Transmitters continued Step 2 Determining type of RTD in the sensor Determine whether the sensor has a platinum or copper RTD (resistance temperature detector). The type of RTD determines how the transmitter and sensor must be wired and configured. All sensors shipped after October 1986 have platinum RTDs. For older sensors, or if the date of manufacture is not known, follow these steps to determine the sensor's RTD type: a.
Replacing Older Transmitters continued Step 3 Installing the RFT9739 transmitter WARNING Hazardous voltage can cause severe injury or death. Shut off power before disconnecting the transmitter. Follow these instructions to mount and wire the new RFT9739 transmitter: a. Mount the RFT9739 transmitter in accordance with the instructions in Chapter 3. b. Connect power-supply wiring and ground wires to the RFT9739 transmitter in accordance with the instructions in Chapter 4. c.
Replacing Older Transmitters continued Figure G-2. RE-01 Remote Electronics Unit terminals Table G-2. RE-01 to RFT9739 terminal conversions Take the wire from RE-01 terminal number: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 [1] ...
Replacing Older Transmitters continued Figure G-3. RFT9712 Remote Flow Transmitter terminals Table G-3. RFT9712 to RFT9739 terminal conversions Take the wire from RFT9712 terminal number: 0 1 2 3 4 ...
Replacing Older Transmitters continued Step 4 Characterizing sensors with copper RTDs CAUTION Failure to characterize a sensor with a copper RTD will cause measurement error. If the sensor has a copper RTD, the flow calibration factor programmed into the transmitter must be modified to ensure accurate flow measurement. Replace the second decimal point in the flow calibration factor with the letter "c". Example: Calibration factor with platinum RTD: 63.1905.13 Calibration factor with copper RTD: 63.
Appendix H Return Policy General guidelines Micro Motion return procedures must be followed for you to meet the legal requirements of applicable U.S. Department of Transportation (DOT) regulations. They also help us provide a safe working environment for our employees. Failure to follow these requirements will result in your equipment being refused delivery. To return equipment, contact the Micro Motion Customer Service Department for return procedures and required documentation: • In the U.S.A.
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Index Page numbers in bold indicate illustrations. A About this manual 1 Accuracy 77 Agency approvals approved areas 82 hazardous area installation 3 order an approved transmitter 85 Ambient temperature limits 81 AMS configuration with 4 connecting to transmitter 29 zeroing procedure 58 Analog output. See mA outputs API gravity 79 Approvals. See agency approvals ASCII mode. See Modbus protocol Asset Management Solutions software 4.
Index continued D D, DL, DT sensor accuracy with 77 normal resistance range 73 repeatability with 77 wiring D, DL sensor 23 DT sensor 23 Damping specification 80 Data bits communication configuration using display 55 using switches 5, 9–10 master reset default values 75 Default characterization and configuration values 75 DH sensor. See D sensor Diagnostic LED 58. See also Startup; Troubleshooting conditions indicated by 64 during startup 51 during zeroing 58 master reset 74 messages.
Index continued Grounding 18–20, 20 power supply and 18, 19 H Handbook 44 custody transfer event registers 56 security mode 8 6 HART Communicator. See also HART protocol connecting to transmitter 2966–67 custody transfer event registers 56 diagnostic messages 65 fast key codes 93 instruction manual 86 interrogation with 66 master reset 74 menu trees 91–93 specifications communication output 79 troubleshooting with 66 HART protocol.
Index continued mA 27–29 Bell 202 multidrop network 48 communication configuration 9–10 performance 27, 27 scaling 9 switches 5, 9–10 temperature effect on 81 test 66, 80 trim 66 NAMUR standard 27 specifications 78–80 terminals 26 test 66, 80 wiring 25–49 P Parity 5. See also Bell 202; RS-485 communication configuration using display 54 using switches 5, 9–10 Partition.
Index continued Safety barrier partition 16 general wiring requirements 15 power-supply wiring 18 sensor wiring 21 wiring 15 Scale. See Downscale; mA outputs; Scaling; Upscale Scroll and Reset knobs. See also Display about 1 communication configuration 54–55 dimensions 12 security modes 5–8 troubleshooting 63 using 51 zeroing with 57–59 Secondary output 27. See also mA output Security breach 6 custody transfer event registers 56 modes 5–8.
Index continued "RAM error" 68 "RTI error" 68 "security breach" 71–72 "sensor error" 69–70 "slug flow" 69–70 "temp overrange" 69–70 "xmtr failed" 68 "zero error" 71–72 diagnostic tools 64–65, 64 display 68–72 fault outputs 65 frequency/pulse output test 66 general guidelines 63–64 HART Communicator 66 mA outputs test 66 mA outputs trim 66 master reset 74–75 normal resistance range for flowmeter circuits 73 open circuits 73 power supply 73 ProLink program 66 sight window 52 wiring 73 zero failure 59, 71–72 U
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