Honeywell Enraf 971 SmartRadar LTi Instruction Manual
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Honeywell Enraf 971 SmartRadar LTi Instruction Manual

Honeywell Enraf 971 SmartRadar LTi Instruction Manual

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971 SmartRadar LTi

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  • Page 1 Instruction manual 971 SmartRadar LTi...
  • Page 3 Instruction manual 971 SmartRadar LTi June 2008 Part no.: 4416.716 Rev. 3 Enraf B.V. P.O. Box 812 2600 AV Delft Netherlands Tel. : +31 15 2701100 : +31 15 2701111 E-mail : enraf-nl@honeywellenraf.nl Website : http://www.honeywellenraf.com Instruction manual 971 SmartRadar LTi Page 1...
  • Page 4 Copyright 2003 - 2008 Enraf B.V. All rights reserved. Reproduction in any form without the prior consent of Enraf B.V. is not allowed. This manual is for information only. The contents, descriptions and specifications are subject to change without notice. Enraf B.V. accepts no responsibility for any errors that may appear in this manual.
  • Page 5 Preface Preface This manual is intended for technicians involved in the commissioning and service of the Enraf series 971 SmartRadar LTi gauge. A description preceding the technical procedures gives the technical information necessary to understand its functioning. It is recommended to read this description prior to performing any of the procedures. For installation of the 971 SmartRadar LTi, please refer to the Installation guides of the 971 SmartRadar LTi and SmartRadar Antennas.

  • Page 6: Table Of Contents

    Table of contents Table of contents Preface ................................3 Introduction ..............................6 Principle of measurement.........................7 Configurations ..........................7 Optional functions..........................9 Remote monitoring ...........................9 Approvals (FM, ATEX) ........................9 Safety.................................10 Safety aspects of the 971 SmartRadar LTi ..................10 Personal safety..........................10 Safety conventions .........................11 Commissioning ............................12 Checks before starting the commissioning..................12 Introduction in programming the 971 SmartRadar LTi ..............12 Connection of Enraf service tool ....................14...
  • Page 7 Table of contents Appendix A Article and part numbers....................47 Appendix B ASCII table ........................50 Appendix C PCB layout ........................51 Appendix D Related documents .......................52 Index ................................53 Instruction manual 971 SmartRadar LTi Page 5...
  • Page 8 Table of contents Page 6...

  • Page 9: Introduction

    Introduction Introduction The Enraf 971 SmartRadar LTi is a radar based level gauge. It is designed to measure the product level in large storage tanks accurately and reliably. The following options can be added to the basic SmartRadar: $ One hard alarm output contact, which can be linked to one of the four programmable alarms in the instrument;...

  • Page 10: Principle Of Measurement

    Introduction 1.1 Principle of measurement The radar level gauge is a device that uses high-frequency (10 GHz) electromagnetic waves to determine the distance from the radar antenna to the product surface. The electro-magnetic wave is sent into the tank and reflected by the product.
  • Page 11 Introduction Instruction manual 971 SmartRadar LTi Page 9...

  • Page 12: Optional Functions

    Remote display can be achieved using the 977 TSI Tank Side Indicator, the 877 FDI field indicator or the 878 CPI panel indicator. 1.5 Approvals (FM, ATEX) The Enraf 971 SmartRadar LTi is an explosion proof instrument, which is designed to meet requirements of ATEX, Factory Mutual, and others. Measuring performance and data handling protocol meet API requirements.

  • Page 13: Safety

    Safety Safety 2.1 Safety aspects of the 971 SmartRadar LTi Warning Do not use the instrument for anything else than its intended purpose. The housing of the 971 SmartRadar LTi is explosion proof: $ II 1/2 G EEx de [ib/ia] IIB T4; KEMA 03ATEX1205 X certified by KEMA, Netherlands $ Class I, Division 1, Groups B, C, D T4, according to ANSI / NFPA 70 (Factory Mutual) The covers of the SmartRadar LTi are provided with blocking facilities which prevent unauthorised opening.

  • Page 14: Safety Conventions

    Safety 2.3 Safety conventions "Warnings", "Cautions", and "Notes" are used throughout this manual to bring special matters to the immediate attention of the reader. $ A Warning concerns danger to the safety of the technician or user $ A Caution draws attention to an action which may damage the equipment $ A Note points out a statement deserving more emphasis than the general text, but not requiring a "Warning"...

  • Page 15: Commissioning

    Commissioning Commissioning 3.1 Checks before starting the commissioning Examine the mechanical and electrical installation after the 971 SmartRadar LTi is installed on the tank. $ Check the connections of all electrical cabling $ Check that all ground connections are made $ Check that non-used cable inlets are sealed with appropriate stopping plugs $ Close all covers carefully (mind O-rings) and apply power 3.2 Introduction in programming the 971 SmartRadar LTi...
  • Page 16 Commissioning Protection level 2 All NOVRAM items which affect the (remote) level reading (such as reference level (RL) or transmission address (TA)) are protected by password 2 (W2). It is possible to modify these data only after entering the correct password W2=XXXXXX , where XXXXXX is the level 2 password.

  • Page 17: Connection Of Enraf Service Tool

    Commissioning 3.3 Connection of Enraf service tool 3.3.1 Communication via the Enraf field bus line By default, the 971 SmartRadar LTi is set on transmission address 00. The 971 SmartRadar LTi, and also other types of Enraf gauges, can be connected in parallel to the Enraf field bus line. Each instrument must have its unique transmission address.

  • Page 18: Communication Via Hart 7 Signal

    Commissioning 3.3.2 Communication via RS-232C or RS-485 RS-232C Connect the RS-232C transmission line from the SmartRadar LTi to a service PC where the Enraf service tool is running (refer to figure 3.3a). Default baud rate for RS-232C is 19200 baud. Continue with section 3.3.4, programming communication parameters.

  • Page 19: Programming Communication Parameters

    Commissioning 3.3.4 Programming communication parameters Start up the Enraf service tool and make contact with the SmartRadar LTi to be configured. Enraf service tool Logger: Go to section: Send items (2). Set the transmission address to >00= <F2> and check the CIU address <F3>. If necessary, set record type to >BZ= <F4>...
  • Page 20 Commissioning For remote transmission, the items TA and TI must be programmed and items GT and TS should be checked. All these items reside under protection level 2. Proceed as follows: Item Name Description Protection level 2 Enter password 2. Default level 2 password: ENRAF2 TA= Transmission address Two digits.

  • Page 21: Programming The Gauge

    Commissioning 3.4 Programming the gauge The 971 SmartRadar LTi is pre-programmed at the factory. Depending on the application, a number of additional parameters have to be set. Note: The items described in this section are typical for the basic 971 SmartRadar LTi. For the optional functions / boards such as: level alarm relay output, spot temperature measurement, average temperature measurement, analog level output and HIMS (Hybrid Inventory Management System) please refer to the applicable option manuals.

  • Page 22: Selecting Dimension And Decimal Separator

    Commissioning 3.4.1 Selecting dimension and decimal separator When one or more dimension items are changed, all items with related formats will be automatically changed and the values will be automatically converted to the new dimension. The same applies for the decimal separator.

  • Page 23: Level Start-Up

    Commissioning 3.4.2 Level start-up Refer to figure 3.4 for level start-up tank parameters. To get the level from the gauge without any compensation enabled, only the following items should be programmed. Radar reference: The radar reference (zero point for the radar gauge measurement) is the roof nozzle position (refer to figure 3.4).
  • Page 24 Commissioning Item Name Description Protection level 2 Enter password 2 to alter the required settings. BD= Stilling well diameter Floating point format; units: metres. This item contains the internal diameter of the stilling well (only if the SmartRadar LTi is installed on a stilling well). OM= Radar operational mode This item contains one character, which determines the operational mode and depends on the antenna.

  • Page 25: Level Check

    Commissioning AdvancedDSP level calculation routine Under certain installation conditions, the product level calculation can be done more accurately when the AdvancedDSP level calculation routine is enabled. In that case the calculated level is less sensitive for obstructions in the microwave path, like equalisation holes in stilling well, welding seams and multipath effect from tank shell.

  • Page 26: Zones And Threshold Settings

    Commissioning 3.4.4 Zones and threshold settings The tank height is divided into 3 measuring zones: Antenna zone, Product zone and Bottom zone. In addition, ten obstruction zones can be programmed. Refer to figure 3.5. Please note that the X-axis from figure 3.5 indicates ullage. The zero point on the X-axis represents the "Radar reference".
  • Page 27 Commissioning The area between antenna zone length and the bottom zone is called "product zone". The product zone threshold can be set with item ZP. The bottom zone is defined around tank zero. With bottom zone offset (item BZ) the position above tank zero is defined where the product zone ends and the bottom zone begins.
  • Page 28 Commissioning Changing the settings for the zones and thresholds should be done, on the basis of information from a reflection diagram. It should be common practice at installation of the 971 SmartRadar LTi gauge to make a reflection diagram and, if necessary, adjust the zones and threshold settings. Item Name Description...
  • Page 29 Commissioning Item Name Description Freeze RSP data The freeze Radar Signal Processing data is a command that stores all relevant radar processing data in RAM memory. Wait approximately 5 seconds before requesting the next data. Number of peaks above threshold This item contains the number of peaks above the threshold settings.
  • Page 30 Commissioning Figure 3.8 shows a Reflection Diagram in which an obstruction is found at approximately 8 m level (6.25 m ullage). The product reflection is found at approximately 3.8 m level (10.44 m ullage). In this example, the following settings should be selected: Obstruction zone start at 5.85 m ullage (at least 0.4 m before the obstruction reflection).
  • Page 31 Commissioning It is advised to use obstruction area=s for recognizable obstruction peaks that stay below the zone threshold (for instance: welding seams from the tank shell or stilling well, or roof truss). Obstructions from welding seams can be recognized as they appear at regular intervals. Refer to figure 3.9. Select the peaks in the reflection diagram, which are known to be caused by an obstruction.

  • Page 32: Alarm Settings

    Commissioning 3.4.5 Alarm settings Refer to figure 3.10. High level alarm (HA) and low level alarm (LA) conditions are transmitted to the host via the communication lines. Item Name Description Protection level 2 Enter password 2 (default password: ENRAF2) AH= Level alarm hysteresis Format according to item LD.

  • Page 33: Ullage Readout

    Commissioning 3.4.6 Ullage readout The two items described in this section need only be programmed, when ullage readout is required. Refer to figure 3.11. Item Name Description Protection level 2 Enter password 2 (default password: ENRAF2) UR= Upper reference Format according to item LD. The upper reference value is only used when 'Ullage' is to be read from the 971 SmartRadar LTi gauge.

  • Page 34: Password Protection

    Commissioning 3.4.7 Password protection Item Name Description Protection level 2 Enter password 2 (default password: ENRAF2) W1= Password 1 6 Characters, default value W1=ENRAF1. This password can be read protected by jumper J6 on the ICU board. If this jumper is set to position 1, the password can not be read W2= Password 2 6 Characters, default value W2=ENRAF2.
  • Page 35 Commissioning Item Name Description Protection level 1 Enter password 1 Low product reflection warning Two digits; default value: 99. The maximum value is 99 and delay counter then the delay is approximately 1 minute. During the delay, the last valid measured level is transmitted as the product level. Exit Exit protection level Reduced accuracy...
  • Page 36 Commissioning 4S= 2 Level calc. decision switch Ten characters; default setting: - - - - - - - - - - Pos. Char. Function Normal communication mode (other settings are used for broadcast mode) Plain selection of peaks (only for factory testing) Intelligent peak selection Measurement by means of roof reflector Measurement direct on product...

  • Page 37: Additional Adjustment With Measurement On Stilling Well

    Commissioning 3.4.9 Additional adjustment with measurement on stilling well The propagation speed of the microwave, and hence the level measurement, depends on the inner diameter of the stilling well. The smaller the diameter, the lower the propagation speed, resulting in a larger measured radar ullage.
  • Page 38 Commissioning An example with an S10 antenna: Item BD is programmed as 254 mm. At 19 m level, the deviation of the SmartRadar LTi level is: -2 mm; At 2 m level, the deviation of the SmartRadar LTi level is: +3 mm. Note: After the new stilling well diameter is programmed, the SmartRadar LTi must be set to level with the RL and AR sequence.

  • Page 39: Data Items

    Commissioning 3.5 Data items The table below lists a number of data items. They contain measured data, verification data and diagnostic data. The verification data can be used to check the peak selection result. The radar status indicates the validity of the measured data.

  • Page 40: Service And Troubleshooting

    Service and troubleshooting Service and troubleshooting The 971 SmartRadar LTi does not require preventive maintenance. For mechanical and electrical installation details, refer to the installation guides of the Antennas and the SmartRadar LTi Depending on the application, the Antenna may over time become too contaminated for accurate level measurement.

  • Page 41: The Instrument Covers

    Service and troubleshooting 4.2 The instrument covers The SmartRadar LTi enclosure is water proof IP67. For this purpose, the covers are fitted with O-rings. Check the O-rings before closing the instrument. Caution Do not damage the thread of the covers and 971 housing and keep the thread free of dirt. After opening, grease it lightly with anti seize grease.

  • Page 42: Alarm Loop Checking

    Service and troubleshooting Item Name Description Protection level 2 Enter password 2. Clear min max diagram Clears all elements of item 4T by writing 30 in them (sets 4T to default). Exit Exit protection level. 4.4 Alarm loop checking Normally, level alarms can be verified when the level reaches the low level or high level alarm set point. The level alarms and, if applicable, the hard alarm contact coupled to one of the level alarms, can be checked by a Aloop check@ command.

  • Page 43: Error Codes And Status Information

    Service and troubleshooting 4.5 Error codes and status information The 971 SmartRadar LTi is an instrument with error reporting. Detected errors can be requested by the 847 PET (optional) or by the Enraf service tool. The following items provide the error data of the processor boards: EB Error request RFB-2 / DAB board EE Error request ICU board (APU part) EP Error request ICU board (XPU-2 part)

  • Page 44: Apu Warning Code (Item Wc), Error Code (Item Ee) And Status Request (Item Qr) Of Icu Board

    Service and troubleshooting 4.5.2 APU warning code (item WC), error code (item EE) and status request (item QR) of ICU board Some ICU (APU part) warning codes of item WC (indexed item of 10 elements) are listed below, with suggestions for solving the problem. For a complete overview, refer to item help in the Enraf service tool. 00000 No warning 07001...

  • Page 45: Dab Error Code (Item Eb) And Status Request (Item Qh) Of Rfb-2/Dab Board

    Service and troubleshooting Item QR consists of 2 bytes (Byte 0, Byte 1) with status information of the ICU board (APU part). Status byte 0: Status byte 1: bit 0 : Low level alarm bit 0 : Level fail 1 : Low low level alarm 1 : Warning (for example: sensor contaminated) 2 : High level alarm 2 : Last valid level used...

  • Page 46: Updating Software

    Service and troubleshooting 4.6 Updating software The 971 SmartRadar LTi is a multiple microprocessor gauge. If a new software version is installed, or an option board is added, it may be necessary to replace one or more of the program memories (EPROM) on the processor boards of the 971 SmartRadar LTi.

  • Page 47: Replacing Software (Eprom) On Icu_Hpi Board

    Service and troubleshooting Item Description Supply board (ICU_GPS) Optional communication board (ICU_RS232/485 or ICU_HPO) Optional interface board (ICU_HPI) ICU board 4.6.2 Replacing software (EPROM) on ICU_HPI board Refer to figure 4.3 and to Appendix C. When no optional communication board (ICU_RS232/485 or ICU_HPO) is installed; Locate ICU_HPI board (3).

  • Page 48: Replacing Software (Eprom=S) On Icu Board

    Service and troubleshooting 4.6.3 Replacing software (EPROM= = = = s) on ICU board Refer to figure 4.3 and to Appendix C. a) XPU-2 EPROM / NOVRAM: When no optional interface board (ICU_HPI) is installed; Locate ICU board (4). Remove EPROM and insert new EPROM (mind notch!). Remove NOVRAM and insert new NOVRAM (mind notch!).

  • Page 49: Novram Init

    Service and troubleshooting Loosen the 4 Allen head screws, marked AD@ in figure 4.3 (use Allen head key 3 mm). Pull ICU board with mounting plate away from RFB-2 / DAB board so that it is released from its interconnector The RFB-2 / DAB board is now visible (refer to Appendix C).

  • Page 50: Appendix A Article And Part Numbers

    Appendix Appendix A Article and part numbers It is recommended to keep one set printed circuit boards on stock for spare. Refer to the figure on the next page. Description Part. no. Front cover 0186.853 O - ring (215 x 4 NBR70) 2132.990 (option) Communication board...
  • Page 51 Appendix The part numbers of the EPROM=s (and NOVRAM) are shown in table below. For software compatibility, refer to table in section 4.6 (page 43). EPROM Part no. EPROM Part no. ICU - APU L&H (set) 0181.302 ICU_HPI 0181.311 ICU - XPU-2 0181.301 ICU_HPO 0181.320...
  • Page 52 Appendix Antenna type part numbers Antenna type Stem length [mm] Part number 0050 0873.911 0300 0873.913 0500 0873.915 6" stilling well 0800 0873.918 0050 0873.921 0300 0873.923 0500 0873.925 8" stilling well 0800 0873.928 0050 0873.931 0300 0873.933 0500 0873.935 10"...

  • Page 53: Appendix Bascii Table

    Appendix Appendix B ASCII table Instruction manual 971 SmartRadar LTi Page 51...

  • Page 54: Appendix Cpcb Layout

    Appendix Appendix C PCB layout The x inside the EPROM in the figure above notes the notch on the EPROM. The notch of the EPROM must fit with the notch of the EPROM socket on the processor board. Page 52...

  • Page 55: Appendix D Related Documents

    Appendix Appendix D Related documents Installation guide 971 SmartRadar LTi Installation guide SmartRadar Antennas Model 971 SmartRadar LTi Safety instructions for installation, commissioning, operation and maintenance Instruction manual 973 SmartRadar LT Hard alarm output contact Instruction manual ENSITE service tool Instruction manual 847 PET Instruction manual Temperature, Water bottom and Analog output options Instruction manual HIMS / HTG and vapour pressure (P3) measurement...

  • Page 56: Index

    Index Index Accept reference...........22, 35 Items ..............12 Acceptance criterium ..........31 00 ..............40 AdvancedDSP.......21, 22, 26, 28, 32, 34 03 ..............40 Alarm settings .............29 4M ..............41 Alarm test............39 4S.............32, 33 Amplitude of detected peaks......26, 36 4V.............21, 32 Analog level output ...........6, 9 4W............33, 41 Antenna.............7, 48, 49 4X.............33, 41...
  • Page 57 Index QH ..............42 Peak selection dilemma ........33 QR ............36, 42 Portable Enraf Terminal ..6, 10, 12, 14, 40, 46 RD..............36 Position of detected peaks ......26, 36 RI .............21, 36 Position radar ............21 RL ..........22, 35, 41, 46 Product reflection signal strength......36 RT ..............36 Product zone............24 RU............21, 36...
  • Page 58 Honeywell Enraf Delftechpark 39 2628 XJ Delft The Netherlands Tel: +31 (0)15-2701 100 Email: enraf-nl@honeywell.com 4416716 - Revision 3 June 2008 www.honeywellenraf.com © 2008 Honeywell International Inc.

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