Loop-powered indicator About this document About this document Document conventions 1.1.1 Safety symbols DANGER This symbol alerts you to a dangerous situation. Failure to avoid this situation will result in serious or fatal injury. WARNING This symbol alerts you to a dangerous situation. Failure to avoid this situation can result in serious or fatal injury.
About this document Loop-powered indicator Symbol Meaning Reference to graphic Notice or individual step to be observed … Series of steps Result of a step Help in the event of a problem Visual inspection 1.1.4 Symbols in graphics Symbol Meaning Symbol Meaning 1, 2, 3,...
Loop-powered indicator Safety Instructions Document type Purpose and content of the document Operating Instructions (BA) Your reference document The Operating Instructions contain all the information that is required in various phases of the life cycle of the device: from product identification, incoming acceptance and storage, to mounting, connection, operation and commissioning through to troubleshooting, maintenance and disposal.
Safety Instructions Loop-powered indicator • The manufacturer accepts no liability for damages resulting from improper or non- intended use. The device must not be converted or modified in any way. • Panel-mounted device: The device is designed for installation in a panel and must only be operated in an installed state.
Loop-powered indicator Product description Product description Function The process indicator is integrated into the 4 to 20 mA/HART® loop and displays the measuring signal in digital form. The process indicator does not require an external power supply. It is powered directly from the current loop. The device meets the requirements of the HART®...
Incoming acceptance and product identification Loop-powered indicator variables are placeholders for measured values that can be called up using HART® communication. The HART® section at the end of these Operating Instructions provides examples of these four device variables for multivariable measuring devices → 46. Refer to the Operating Instructions for each device for details on the variables that are set as default on the sensor/actuator and how they can be changed.
‣ Compare the information on the nameplate with the order. 4.2.2 Name and address of manufacturer Name of manufacturer: Endress+Hauser Wetzer GmbH + Co. KG Address of manufacturer: Obere Wank 1, D-87484 Nesselwang or www.endress.com Certificates and approvals For certificates and approvals valid for the device: see the data on the nameplate HART ®...
Mounting Loop-powered indicator Mounting Installation conditions Permitted ambient temperature: –40 to 60 °C (–40 to 140 °F) At temperatures below –25 °C (–13 °F) the readability of the display can no longer be guaranteed. Installation Instructions For device dimensions, see "Technical data". 5.2.1 Panel housing •...
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Loop-powered indicator Mounting TX20 A0017789 2 Mounting the process indicator on a pipe Mounting plate for pipe/wall mounting Weather protection cover (optional) 1. Release the 4 housing screws. 2. Open the housing. 3. Secure the mounting plate to the rear of the device with 4 screws supplied. The optional weather protection cover can be secured between the device and the mounting plate.
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Mounting Loop-powered indicator A0017803 3 Mounting the process indicator on a wall 1. Use the mounting plate as a stencil for 2 6 mm (0.24 in) bore holes, 82 mm (3.23 in) apart, and secure the plate on the wall with 2 screws (not supplied). 2.
Loop-powered indicator Wiring Post-installation check 5.3.1 Display unit in the panel-mount housing • Is the seal undamaged? • Are the mounting clips securely fastened on the housing of the device? • Are the threaded rods properly tightened? • Is the device located in the center of the panel cutout? 5.3.2 Display unit in the field housing •...
Loop-powered indicator Wiring Connection in HART mode The following diagrams show in a simplified way how the process indicator is connected in the HART mode. 6.3.1 HART ® connection NOTICE Undefined behavior due to incorrect wiring of an actuator ‣ When installing the process indicator together with an actuator, the operating instructions for the actuator must always be followed.
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Wiring Loop-powered indicator Circuit diagram / Description 4-wire sensor with process indicator and transmitter power supply, with backlighting A0019571 HART ® resistor Current measuring device (optional) Sensor Power supply 4-wire device Current output with process indicator and actuator (e.g. actuator valve), without backlighting A0019573...
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Loop-powered indicator Wiring Circuit diagram / Description Multidrop 2-wire sensors with process indicator and transmitter power supply A0019575 Sensors Power supply ® HART resistor Multidrop 2-wire sensors with process indicator and transmitter power supply, with backlighting A0019722 Sensors Power supply ®...
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Wiring Loop-powered indicator Wiring Circuit diagram / Description 2-wire sensor with process indicator and transmitter power supply, without backlighting A0020839 HART ® communication resistance module Sensor Power supply 2-wire sensor with process indicator and transmitter power supply, with backlighting A0020840 HART ®...
Wiring with switchable backlighting An additional current-limited power source (e.g. active barrier from the Endress+Hauser RN product family) is required to implement switchable backlighting. This power source is used to supply the LED backlighting of up to seven process indicators without generating an additional voltage drop in the measuring loop.
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3-wire connector, e.g. WAGO 221 series 2-wire sensor Terminal block on DIN rail Active barrier (e.g. RN product family from Endress+Hauser) 4 to 20 mA output to the control unit Power supply Power source (e.g. RN product family from Endress+Hauser)
Loop-powered indicator Wiring Inserting the cable, field housing TX20 A0017830 6 Inserting the cable, field housing Inserting the cable, field housing, connection without transmitter power supply (example) 1. Release the housing screws. 2. Open the housing. 3. Open the cable gland (M16) and insert the cable. 4.
Wiring Loop-powered indicator therefore, cable shielding of fieldbus systems should only be grounded on one side, for example at the supply unit or at safety barriers. NOTICE If the shielding of the cable is grounded at more than one point in systems without potential matching, power supply frequency equalizing currents can occur that damage the signal cable or have a serious effect on signal transmission.
Loop-powered indicator Wiring TX20 A0018908 9 Ground terminal on field housing Ensuring the degree of protection 6.8.1 Field housing The devices meet all the requirements of IP67. It is absolutely essential to comply with the following points to ensure this protection is guaranteed after mounting or servicing the device: •...
Operation Loop-powered indicator Operation A0017719 10 Display and operating elements of the process indicator Symbol: operating menu disabled Symbol: error Symbol: warning Symbol: HART ® communication active (option) Operating keys "-", "+", "E" 14-segment display for unit/TAG Bar graph with indicators for under range and over range 5-digit 7-segment display for measured value, digit height 17 mm (0.67 in) The device is operated using three operating keys on the front of the housing.
Loop-powered indicator Commissioning Setup Basic device settings → 25 (SETUP) Diagnostics Device information, display of error messages → 27 (DIAG) Expert Expert settings for the device setup → 25 (EXPRT) The Expert menu is protected from editing by an access code (default 0000). Commissioning Post-installation check and switching on the device Perform the final checks before commissioning the device:...
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Commissioning Loop-powered indicator Setup menu (SETUP) Parameter Values (default in Displayed when Description bold) SCAN MODE = HART Select "YES" to start scanning. All addresses are then automatically scanned once in a HART® application until a sensor/actor is found. Scanning runs from 0 to 63. Only addresses up to 15 are permitted for HART 5.
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Loop-powered indicator Commissioning Diagnostics menu (DIAG) Parameter Values Description AERR Read only The current diagnostic message appears on the display. If several messages occur simultaneously, the message with the highest priority is shown on the display. LERR Read only The last diagnostic message with the highest priority appears on the display. FWVER Read only The firmware version appears on the display.
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Commissioning Loop-powered indicator Expert menu (EXPRT); a code must be entered In addition to all the parameters in the Setup menu, the Expert menu also contains the parameters described in this table. If you call up the Expert menu, you will be asked to enter the user code (UCODE, default: 0000). Parameter Values (default in Displayed when...
Loop-powered indicator Troubleshooting Troubleshooting Error limits as per NAMUR NE 43 In Mode=4-20, the device can be set to error limits as per NAMUR NE 43→ 27. The device displays an error message if a value is outside these limits. Current value Error Diagnostic code...
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Troubleshooting Loop-powered indicator Diagnostic Short text Remedial action Status signal Diagnostic Priority number behavior F960 HART® • Verify HART slave address Alarm communication (slave • Check electrical wiring (HART®) not responding) • Check HART® function sensor/actor C970 Multi-master collision • Check additional master in HART® network (e.g. Check handheld) •...
Loop-powered indicator Troubleshooting The following values are displayed: < 120 mV 120 to 200 mV 200 to 800 mV 800 to 850 mV > 850 mV Indication Level in mV Bargraph < < 0 to 100 % > > Measuring the "NOISE" interference signal: When the interference signal level is measured, the interference signal determined is divided into three categories: LO = low...
Maintenance Loop-powered indicator The firmware version on the nameplate and in the Operating Instructions indicates the device release: XX.YY.ZZ (example 1.02.01). Change to main version No longer compatible The device and Operating Instructions change. Change to functions and operation Compatible The Operating Instructions change. Fixes and internal changes No changes to the Operating Instructions Date...
Loop-powered indicator Repair • Carry out repairs according to the instructions. On completion of the repair, carry out the routine test specified for the device. • A certified device may only be converted to another certified device version by the manufacturer only.
Accessories Loop-powered indicator 11.4 Disposal If required by the Directive 2012/19/EU on waste electrical and electronic equipment (WEEE), the product is marked with the depicted symbol in order to minimize the disposal of WEEE as unsorted municipal waste. Do not dispose of products bearing this marking as unsorted municipal waste.
Loop-powered indicator Technical data Active barrier from the Endress+Hauser RN product family A0044417 15 Dimensions of active barrier for DIN rail mounting, unit mm (in) M16 cable gland with integrated pressure 3.5 Nm 20 mm compensation lbf ft) membrane 1.5 Nm...
Technical data Loop-powered indicator 13.2 Power supply Supply voltage NOTICE SELV/Class 2 device ‣ The device may be powered only by a power unit with an energy-limited circuit in accordance with UL/EN/IEC 61010-1 Paragraph 9.4 or Class 2 as per UL 1310: ' S ELV or Class 2 circuit' .
Loop-powered indicator Technical data 13.5 Environment Ambient temperature –40 to 60 °C (–40 to 140 °F) range At temperatures below –25 °C (–13 °F) the readability of the display can no longer be guaranteed. Storage temperature –40 to 85 °C (–40 to 185 °F) Climate class IEC 60654-1, Class B2 Operating altitude...
Technical data Loop-powered indicator Required panel cutout 45x92 mm (1.77x3.62 in), max. panel thickness 13 mm (0.51 in). Field housing 131 (5.16) 55.5 (2.19) mm (in) A0017722 17 Dimensions of the field housing incl. cable entries (M16) Weight Panel-mount housing 115 g (0.25 lb.) Field housing 520 g (1.15 lb)
Loop-powered indicator HART ® communication 13.8 Certificates and approvals Ex-approval Information about currently available Ex versions (ATEX, FM, CSA, etc.) can be supplied by your supplier. All explosion protection data are given in a separate documentation which is available upon request. Functional safety A SIL version of the device is optionally available.
Loop-powered indicator ® HART communication maximum of 600 Ω. If the resistance is less than 230 Ω, the digital signal is greatly attenuated or short-circuited. Therefore, a HART ® communication resistor is always required in the 4 to 20 mAcable in the case of a low-impedance power supply. 14.1 HART ®...
Loop-powered indicator ® HART communication The following bits are analyzed by the process indicator and displayed as a diagnostic message: Bit mask Definition Used in the process indicator 0x80 Device error function – The device has detected a serious error or an Diagnostic F911 error function which affects the operation of the device.
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Loop-powered indicator ® HART communication Unit code Description Display text Feet per second FT/S Meters per second Gallons per second gal/S Million gallons per day Liters per second Million liters per day Cubic feet per second FT3/S Cubic feet per day FT3/d Cubic meters per second m3/S...
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Loop-powered indicator ® HART communication Unit code Description Display text Pounds American tons TN SH British tons TN L Millisiemens per centimeter mS/cm Microsiemens per centimeter uS/cm Newton Newton meters Grams per second Grams per minute g/min Grams per hour Kilograms per second Kg/S Kilograms per minute...
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Loop-powered indicator ® HART communication Unit code Description Display text Volume percent %VOL Degrees Balling °bal Proof per volume P/VOL Proof per mass P/maS Bushels Cubic yards YARD3 Cubic feet FEET3 Cubic inches inch3 Inches per second in/S Inches per minute in/mi Feet per minute F/min...
Loop-powered indicator ® HART communication In Multidrop mode, several HART ® devices are incorporated in a single current loop. Analog signal transmission is disabled in this case and the data and measured values are ® exchanged exclusively via the HART protocol.
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