LCN cable Audit Report - Honeywell Process Solutions
Contents
1.2. Customer xxxxx LCN Audit Report Document LCN cable Audit Report Job Number xxxxxxx Page 20 Rev 0 Date N Y Y Good Linked N Untidy Cables to be tidied up Y N Y Y Good Linked N Untidy Cables to be tidied up Y N Y Y Good Linked Untidy Cables to be tidied up Y N Y X Good Linked N Untidy Cables to be tidied up Y N Y Y Good Linked N Untidy Cables to be tidied up Y N Y Y Good Linked N Untidy Cables to be tidied up DS 4 Not visible Not visible Not visible N Dirty To be cleaned pe Y N Y Y Good Linked N Untidy Cables to be tidied up Y N N Y Good N Y N Good Cabinet very dusty inside to be cleaned out N Cabinet very dusty inside to be cleaned out Y N N Y Good N Y N Good Cabinet very dusty inside to be cleaned out Y N N Y Good Y N Good Cabinet very dusty inside to be cleaned out Y N Y N Good N Y Good LCN A B joined with 3 open T s under floor Terminated at Mau under floor Y N N Y Good N Y Y Good Another Mau with LCN cables but no connection and open T s on LCN A B under floor LCN A B not labelled at T i N M N Good is Y Corroded N Good Connections on MAU Corroded Y N N N Good N Y N Good Node powered down but still Y N Y N Good N Good connected to LCN A B lusai Y N Y N Good N N Good LCN A B not labelled at T Customer xxxxx LCN Audit Report Job Number xxxxxxx Page 21 Document LCN cable
3. Report for XXXXXXXXXX LCN Audit Date xxxxx PROPRIETARY NOTICE This proposal contains proprietary information of Honeywell Inc Information contained herein is for the sole use of XXXXXXX Acceptance of the document by Xxxxxxxx constitutes agreement that they shall not disclose proprietary information of Honeywell to any third arty and shall not transmit any documents or copies thereof containing proprietary information of Honeywell to any third party except as may be authorized in writing by Honeywell This document contains proprietary information that Honeywell Ltd deems confidential It may not be reproduced or communicated to third parties in any way without the express written permission of a duly authorized officer of Honeywell Ltd To copy or communicate the contents of this Proposal either in full or in part without the required permissions may result in legal action being taken Customer xxxxxxx LCN Audit Report Document LCN cable Audit Report Job Number xxxxxx Rev 0 Date xxxx Copyright Notices and Trademarks Copyright 2008 by Honeywell Limited While this information is presented in good faith and believed to be accurate Honeywell disclaims the implied warranties of merchantability and fitness for a particular purpose and makes no express warranties except as may be stated in its written agreement with and for its customers In no event is Honeywell liable to anyone for any indirect special or consequential damages
4. problem with communication on cable A The same event is present at US 32 and AM 54 If the report is decreasing it means that the software was able to correct the hardware problem If the report is increasing it means that the software was unable to resolve the hardware problem and the board should be replaced with a new one Customer xxxxx LCN Audit Report Job Number xxxxxxx Page 13 Document LCN cable Audit Report Rev 0 Date xxxx 9 Jul 8 12 27 45 LCN CABLE DIAGNOSTICS MAIN MENU NUMBER OF TIMES MEDIA DEAD DETECTED Na CBL Al CBL B CEL A CBL B 8 Cr n c 4 to 2 3 ng JA XO 5 28 5 3 3 oo The Media Dead display should display 0 for all nodes for Cable A and Cable B If it doesn t then the system has been reporting errors and these errors need to be cleared by going further in the LNMENU display The cause could be picked up by calling up the Cable A amp B Rates If the Cable A amp B rates indicate a value other than 0 then the LOCAL DRIVER DATA display can be used to determine communication problems by specifying each node Check the values for Drive Errors Output Packets Lost Transmit Errors received IOCB Errors and LCN Recovery retries If any of these values are other than 0 then there is an indication that there is a LCN communications problem Customer xxxxx LCN Audit Report
5. Audit Report Rev 0 Date N Y N Good N N Good LCN A B not labelled at T Y N N Y Good N Y N Good Y N N Y Not Visible N Y N Good Y N N Y Not Visible N Y N Good Cabling Untidy Cables to be tidied up Y N Y N Good N N OK LCN A not labelled at T LCN not labelled at T Logic Y N y N 998 N os and Chassis ground shorted out lnmas Y N Y N Good N N OK LCN A B not labelled at T Y N Y N Good N N OK LCN A B not labelled at T Y Y Y N Good N N OK LCN A B not labelled at T LI Y Y Y N Good N N OK LCN A B not labelled at T OK Y N Y N Good N N OK LCN A B not labelled at T Y Y Y N Good N N OK LCN A B not labelled at T LCNE not used Y Y Y N Good N N OK LCN A B not labelled at T LCNE not used Spare Fibre Optic Cable To Sat Spare LCN cable Room 2 Spare 3m LCN Segment N Y N Good N N OK LCN A B not labelled at T LCN A B not labelled at T Y Y Y N Good N Y Untidy Cables to be tidied up A B joined with open T s Eccc Y Y Y N Good N N OK LCN A B not labelled at T LCN Cables LCN cables to be tidied up Customer XXXXX LCN Audit Report Document LCN cable Audit Report Job Number Page 22 Rev 0 Date xxxx N Y Y Good N N OK Y N Y Y Good N N OK Y N Y N Good N N OK LCN A B not l
6. Honeywell Total Plant and Uniformance are registered trademarks of Honeywell International Inc Other brand or product names are trademarks of their respective owners Honeywell Checked by xxxxxxxx Honeywell Approved by xxxxxxx Customer Approved by Notes e Modifications will be indicated by a revision change bar in the left hand side margin e This document is uncontrolled unless it contains original signatures Honeywell Limited Address Contact details Customer xxxxx LCN Audit Report Document LCN cable Audit Report Job Number xxxxxxx Page 1 Rev 0 Date xxxx Revision Status Revision Date Prepared By Description 0 XXXXXXXX Honeywell Original Issue Note Modifications will be indicated by a revision change bar in the left hand side margin Revision Summary The following sections were added to A modified M or deleted D from the previous issue revision Section Change Description General Revisions Customer xxxxx LCN Audit Report Document LCN cable Audit Report Job Number xxxxxxx Page 2 Rev 0 Date xxxx Table of Contents 1 ABBREVIATIONS AND 5 2 24 2 2244 4 000000 4 1 1 ABBREVIATIONS eee tte ho 4 1 2 ok Jon Cs eae E ede nee 5 2 INTRODUCTION eec M CT
7. at is The Local Control Network LCN is a token bus network that is implemented in 75 ohm coaxial cable The bus is terminated at each end and each node on the bus is transformer isolated from the bus The LCN has two physically separate redundant copies LCN A and LCN B so there are actually two networks The Operator Consoles in the control room uses Group Trend Detail and Custom Displays as the interface to mimic and control the plant 3 Scope The scope of work for this audit Inspect and document all LCN Connections Inspect and review all MAU devices on the LCN Inspect and document all LCN node earthing Review and summarise all LCN Error statistics Review and document any standing System alarms Review and document all current history module journals for System errors This is a passive audit where no active testing of cabling system testing or performing any interruptions to the LCN cables was under taken Customer xxxxx LCN Audit Report Document LCN cable Audit Report Job Number xxxxxxx Page 6 Rev O0 Date xxxx 4 Inspection report The inspection report is divided into two sections The first section is detailed as the hardware inspection and the second section is the review of the system diagnostics and system journals 4 1 Hardware Inspection Below is a summary of the equipment inspected Appendix A is an Excel spreadsheet containing all the information on the LCN hardware
8. regular intervals Replace all LCNE2 boards with XLCNE2 boards as per service bulletin MP 0109 01A No review was conducted on the Hot Spare system A review should be done and guidelines of this report should be followed Customer xxxxx LCN Audit Report Document LCN cable Audit Report Job Number xxxxxxx Page 18 Rev 0 Date xxxx Once all of the recommendations are actioned a review should be conducted again to measure impact of changes and stability of LCN communications If no improvements are observed in the LCN communications then further testing needs to be conducted This could include but not limited to LCN Noise measurements LCN cable testing and active testing of the earthing system Customer xxxxx LCN Audit Report Document LCN cable Audit Report Job Number xxxxxxx Page 19 Rev 0 Date xxxx Appendix A Gather LCN Audit Data Y N Y Y Good Linked N Y N Y Y Good Linked N OK Y N Y Y Good Linked N OK Y N Y Y Good Linked N OK Y N Y Y Good N N OK Y N Y Y Good N N OK 1 Not visible Not visible Not visible N Dirty To be cleaned Y N Y Y Not Good N N OK Tight 2 Y N Y Y Good N N OK Y N Y Y Good N N OK Y N Y Y Good N N OK Y N Y Y Good N N OK Y N Y Y Good N N OK Y N Y Y Good N N OK Y N Y Y Good N N Untidy Cables to be tidied up Tuus N Y Not visible Not visible Not visible N Dirty To be cleaned
9. 0 06 0 4 07 0 61 89 3 90 06 0 4 07 0 95 56 3 90 06 0 4 07 0 70 37 3 90 06 0 4 07 0 93 09 3 90 06 0 4 07 0 20 2 3 90 06 0 4 07 0 93 44 3 90 06 0 4 07 0 96 14 3 90 06 0 4 07 2 92 63 3 90 06 0 4 07 15 95 82 3 90 06 0 4 07 1 79 36 3 90 06 0 4 33 2 92 09 3 90 06 0 4 1 94 03 3 90 06 0 4 07 0 82 11 3 90 06 0 4 07 2 92 79 3 90 06 0 4 33 0 93 14 3 90 06 0 4 07 1 96 26 25 Document LCN cable Audit Report Rev 0 Date xxxx 3 90 06 0 4 07 0 77 54 3 90 06 0 4 07 0 94 94 3 90 06 0 5 27 0 80 71 3 90 06 0 4 94 14 3 90 06 0 4 07 0 86 94 3 90 06 0 4 07 0 96 3 90 06 0 4 33 2 94 92 3 90 06 0 4 33 0 94 75 1 40 06 0 4 07 0 94 91 3 90 06 0 4 07 0 94 89 1 40 06 0 4 4 0 95 19 1 30 06 0 4 27 0 88 71 2 40 06 0 4 07 0 99 11 2 20 06 0 4 07 0 82 77 2 30 06 0 0 07 75 25 1 30 06 0 4 33 0 81 28 1 30 06 0 7 2 12 1 20E 06 0 0 4 36 97 03 1 30 06 0 4 53 0 87 53 5 90E 06 0 0 13 0 98 3 Customer xxxxx LCN Audit Report Job Number xxxxxxx Page 26 Document LCN cable Audit Report Rev 0 Date xxxx Customer LCN Audit Report Job Number xxxxxxx 5 90 06 0 37 93 0 95 71 5 90 06 0 0 2 0 98 48 5 90 06 0 32 73 0 96 26 5 40 06 0 0 2 0 94 31 5 10 06 0 0
10. 07 24 95 95 5 10 06 0 0 07 2 87 97 5 00 06 0 0 13 37 91 87 5 10 06 0 0 2 2 90 76 1 20 06 1 190 2 13 85 48 1 20 06 1 124 73 16 88 26 247296 0 46 93 148 84 74 450708 0 12 47 9 90 63 273223 0 55 07 62 87 69 531834 0 0 2 10 97 47 1 30 06 0 2 13 12 89 16 408349 0 21 47 295 94 26 719989 0 0 6 0 92 98 4 50 06 0 0 2 0 98 06 4 50 06 0 652 27 0 72 65 4 50 06 0 0 07 0 97 8 4 50 06 0 220 2 0 83 74 4 50 06 0 0 07 0 98 13 4 50 06 0 1 27 0 96 71 4 50 06 0 0 13 0 98 06 27 Document LCN cable Audit Report Rev 0 Date xxxx The following are quidelines for LCN performance Start with PARSEC when diagnosing a problem 4 50E 06 0 558 2 73 3 SECTION I PSDP parameters relevant to performance CPUFREE consistent averages below 15 20 are undesirable HEAPMIN Values over 100 000 are desirable though AMs can operate with as little as 40 000 HEAPFRAG Values at or above 2 indicate potentially fatal condition PARSEC Recommended Maximums NG 3600 for 68040 1200 for 68020 AM lt 615 for 68040 410 for 68020 HG lt 960 for 68040 630 for 68020 lt 1400 for 68040 750 for 68020 PFPSHLDB Consistently increasing values indicate overloading on other nodes Customer xxxxx LCN Audit Report Job Number xxxxxxx Page 28 Document LCN cable Audit Report Rev 0 Date xxxx
11. 29 amp 30 with no fibre connected Cabinet 37 CAB LCN3 Rear There is a spare fibre optic cable going to Sat room 2 and a spare 3m LCN segment in the bottom of the cabinet EN Figure 7 Spare Fibre Optics and LCN Segment Customer xxxxx LCN Audit Report Document LCN cable Audit Report Job Number xxxxxxx Page 12 Rev 0 Date xxxx 4 2 System Software Report Below is a summary of the system software report Appendix A is an Excel spreadsheet containing all the information on the LCN system software ACTIVE MAINT JOURNAL DATA DATE RIEUENT Junge Jung 817108 871088 871088 59 0271108 04111808 08411108 04101088 9 g85Jul88 59 6Julae 3 07111808 ENTER CA Text 0100104 0100106 SLOT 5 INVESTIGATE 5 SLOT 5 INVESTIGATE SLOT 5 INVESTIGATE SLOT 5 INVES 53000801 N 8115635 8115754 5300003 011743 8117448 5 INVESTIGATE LOT 5 INVESTIGATE IT 5 INVESTIGATE OT 16 REPLACE MA SLOT 16 REPLACE MA LOT 5 INVESTIGATE US 4 SLOT 5 INVESTIGATE CUR PECT CUR Cl NAL LONI NAL LENI 15 Jul 88 508 DEVICE SOR DEVICE SOR DEVICE 5 DEVICE OR DEVICE OR DEVICE JR DEVICE Cable B Cable B R DEVICE IR DEVICE For Information On Functions And Options Displayed On This Menu Position The Cursor On The Desired Target And Pr HELP 98 25 48 1 The event at NIM 23 SLOT 16 REPLACE MARGINAL LCNI Cable A is referring to
12. 6 2 1 PURPOSE OF THIS 0 0 6 2 2 SYSTEM ARCHITECTURE a 6 3 6 4 INSPECTION 7 4 1 HARDWARE INSPECTION 55 180080000080000080000000080010800000000001000011800808008 4 2 SYSTEM SOFTWARE REPORT 5 RECOMMENDATION S E 18 5 1 MDC 18 5 2 18 5 3 La ia aN 18 5 4 18 APPENDIX GATHER LCN AUDIT DATA 2 222 20 LCN Audit Report Document LCN cable Audit Report Job Number xxxxxxx Page 3 Rev 0 Date xxxx 1 Abbreviations and Definitions 1 1 Abbreviations The following abbreviations used in this document are defined as Abbreviation AI Definition Analogue In AO Analogue Out CER Central Equipment Room Customer XXXXXXX Display Native Window Operator Graphic DCS Distributed Con
13. Document LCN cable Audit Report Job Number xxxxxxx Page 14 Rev 0 Date xxxx 83 Jul 88 12 29 00 MM CABLE DIAGNOSTICS RECEIVED MESSAGE STATISTICS MAIN MENU CROSSED CABLE MESSAGE TOTALS COUNT Ta COUNT COUNT COUNT 81 120 The lowest US node cable Master which contains the K4 or K2 if K2 the LCN Firmware must be revision P or greater will check for crossed cables The lowest US which meets this conditions will have a count one higher or one lower than the rest of the nodes In this case it will be Node 01 If this is true then there are no crossed cables If there is a node s which have different values then that node s has the LCN cable crossed Shutdown the node s 2 times to place them into the failed state and then power down the node Reverse the tees on this node s and then power it up and reload it Once the cables swap the next time all nodes will be one more or less than the cable master Customer xxxxx LCN Audit Report Document LCN cable Audit Report Job Number xxxxxxx Page 15 Rev 0 Date The following snapshots were made of the system The errors the system have been cleared before the LCN audit was done The snapshots can be used as a baseline to determine if errors will increase on the LCN 83 Jul 808 12 LCN CABLE DIAGNOSTICS CABLE A RATES RECEIVED STATISTICS MAIN MENU ERRORS Bebe Begg Bebe Bebe Bebe Bebe Bebe Bebe Beg
14. abelled at T LCN not labelled at LCN N X n Good n N Untidy cables to be tidied up LCN A not labelled at T LCN Lo N Good N n Untidy cables to be tidied up Untidy LCN cables to be tidied up Y N N Y Good N Y Y Untidy LCN A B joined with open T s LCN A B joined with open T s Y N N M Good N 3 y Untidy LCN A B not labelled at T Cables untidy LCN T and cables to be removed Y N Y N Good N N Cables untidy LCN not labelled at T Lm Y N Y N Good N N Cables untidy LCN B not labelled at T Y N Y N Good N N Cables untidy LCN A B not labelled at T Y N Y N Good N N Cables untidy LCN A B not labelled at T Y Y Y Y Good N N Cables untidy 1 joined with open T s Y Y Y N Good N Y Cables untidy LCN A not labelled at T Customer LCN Audit Report Job Number Page 23 Document LCN cable Audit Report Rev 0 Date xxxx Customer LCN Audit Report Job Number xxxxxxx Page 24 Document LCN cable Audit Report Rev 0 Date xxxx Y Good Y N New cabinet still busy to tidy up Good N Good New cabinet still busy to tidy Y Good Y N Good up 2 x Spare MAU s with no connection Customer LCN Audit Report Job Number 3 90 06 0 4 07 2 93 62 3 90 06 0 4 0 93 06 3 9
15. g Bebe Bebe i ow ANC dm a 51 amp 83 Jul 88 LCN CABLE DIAGNOSTICS CABLE A TOTALS RECEIVED MESSA STATISTICS MAIN MENU co J CO Cn mo on D N ga co dg c dg un a GG 1 Customer xxxxx LCN Audit Report Document LCN cable Audit Report Job Number xxxxxxx Page 16 Rev 0 Date xxxx 09 Jul 08 LCN CABLE DIAGNOSTICS CABLE B RATES RECEIVED MESSAGE STATISTICS MAIN MENU dead Hebe Hebe me o Re qo c c enn mona E 4 ol us dU R3 BO PRO BO PRO Mm PR BR ho 4 L 23 Begg Bebe oT Jul 88 12 LCN CABLE DIAGNOSTICS CABLE B TOTALS RECEIVED MESSAGE STATISTICS MAIN MENU 03 8 6777 Customer xxxxx LCN Audit Report Document LCN cable Audit Report Job Number xxxxxxx Page 17 Rev 0 Date 5 Recommendations 5 1 MAU The MAU located at GUS 44 should have the MAU and tee s replaced Also the location of this MAU needs to be relocated from the sub floor space to an environmental stable position 5 2 Earthing The earthing guidelines should be reviewed and applied to each node on the LCN A more detailed scope of work needs to be created to define the action per node and implementation of a corrective acti
16. he outer conductor of the coaxial cable is grounded to chassis at one location The following items are noted as not meeting the requirements cable earthing is not implemented This should ground A and cables and not to be grounded at the same node LCN A and B should be grounded in 37 CAB LCN1 at NIM 23 or NIM 24 Customer xxxxx LCN Audit Report Document LCN cable Audit Report Job Number xxxxxxx Page 8 Rev 0 Date xxxx respectively They should also be grounded in 37 CAB LCN6 at 47 and NIM 48 respectively Note this connection can be made by installing CS R I O 51304286 boards The CS R s provide a connection from the BNC outer conductor to chassis on the PWB As this time we cannot confirm installation of these boards based that the part number is not visible e Cables are joined by Tee connectors this is not recommended for use of extending cable lengths Only where a physical connection is required to a LCN node On US stations Logic and Chassis ground must be shorted this is not implemented on nodes 5 6 8 9 31 32 33 34 35 36 37 Also note node 8 has no chassis ground connection Ground guidelines can be found in reference document TPS System Site planning SW02 550 section 5 4 1 3 HIWAY Grounding Principles TDC HiWay systems will keep the Master Reference Ground and the Safety Ground This is outside of scope for the LCN audit Customer xxxxx LCN Audit Report Job Number xxxx
17. inspection 4 1 1 Media Access Units MAU s founded are the newer type i e case manufactured from aluminium Details are found in BeAware advice BW 98010 A copy of the BeAware notice is provided in The MAU s are located at LCN node addresses 20 21 22 38 39 40 44 55 58 Other MAU s were found but not connected to TPS hardware These are noted in Appendix A Also Gus 44 MAU is displaying signs of corrosion due it its location near a sub floor air conditioning duct Customer xxxxx LCN Audit Report Document LCN cable Audit Report Job Number xxxxxxx Page 7 Rev 0 Date xxxx Figure 2 MAU at Node 44 show signs of corrosion 4 1 2 LCN Grounding Principles XXXXxxx uses Non CE equipment and the following must apply on the grounding of equipment The required grounds and their connections including design are discussed below Five Slot Modules are grounded according to the type of node present in the module Universal Stations have the logic ground terminal connected to chassis ground All other LCN nodes have the logic ground connected to MRG Dual Node Modules require grounding of both nodes in the module according to the type of node present in the module e Hiway Gateways HG have the logic ground connected to All other node types have the logic terminal connected to chassis ground e Redundant gateways HGs NIMs and PLCGs must be located in separated Dual Node Modules For safety reasons t
18. on plan Further details of earthing principles for a TPS system is found in Honeywell guide TPS system Site Planning SW02 550 No testing was made of the earthing points It is recommended to test and inspected these and to document the results This should be included in a preventative maintenance plan per annum 5 3 LCN Cabling All excessive cabling should be removed from the LCN There were many connections in the LCN that had no requirement for equipment needs or operation needs Honeywell recommends removal of all unused tees Require accurate documentation of the LCN cable path and segmental lengths it should also note the physical path cable part numbers and location of any connections A review of this document should be included in a preventative maintenance plan per annum at minimum and update the document as LCN changes occur between reviews The LCN cabling should be labelled such to provide information of the source and or destination of the cable It is also recommend replacing all end termination resistors of the LCN and documenting the location of these All LCN cabling should have a minimum separation of 30 centimetres from power cabling Every attempt should be made to ensure this is complied to 5 4 Other A review of the environment conditions of the LCN equipment needs to be checked i e humidity and temperature are being controlled within Honeywell recommended limits This should be monitored and recorded at
19. ower cabling The bend radius of the LCN coaxial cable should be as large as possible to minimize cable impedance changes Bend radius less than 0 3 meters are unacceptable on the trunk style cable Node 8 is outside the bend radius guide line and there is tension on the LCN connector Figure 6 Bend Radius at Node 8 Customer xxxxx LCN Audit Report Document LCN cable Audit Report Job Number xxxxxxx Page 11 Rev 0 Date 4 1 5 Environmental Conditions The air conditioning in the Central Equipment Room CER should be checked regularly System equipment operates over a wide range of temperature and humidity however corrosive process materials contaminants in the air and other realistic considerations may reduce the environmental range that can be placed on the equipment The following guidelines limiting the operating ranges are recommended Maintain relative humidity levels between 40 and 50 Control humidity fluctuations to less than 6 per hour rate of change e Limit the temperature rate of change to 1 C minute on actuation of the air conditioner The system at Xxxxxxx is monitored and alarms are generated to warn if the air conditioner is not operating correctly 4 1 6 Other Observations US Nodes 7 17 37 have a build up of dust Experion Node 38 39 43 are operating in custom built cabinets and these nodes have a build up of dust Two available LCNE board are installed in nodes
20. trol System DI Digital Input DO Digital Output EXPERION Honeywell Experion PKS GUS Global User Station DCS Operator interface HM History Module HPM High Performance Processor Manager HWL Honeywell Limited I O Input Output LCN Local Control Network now known as TPN LCS Honeywell LCS 620 PLC system MAU Media Access Unit NIM Network Interface Module OP Output P amp ID Piping and Instrumentation Diagram PC Personal Computer PHD Process History Database PID Proportional Integral Derivative PLC Programmable Logic Controller Points DCS SCADA entities PV Process Variable SCADA Supervisory Control and Data Acquisition Schematic Honeywell DCS Legacy Custom Graphic SI Serial Interface I O SP Setpoint TPS Honeywell TotalPlant Solution System TPN TPS Network UCN Universal Control Network US Universal Station Honeywell legacy DCS Operator interface UxS US with a Unix Co processor X layer Workstation Customer xxxxx LCN Audit Report Job Number xxxxxxx US contained in a stand alone desk side unit Document LCN cable Audit Report Page 4 Rev 0 Date xxxx 1 2 Definition of Terms Goods Equipment Services Software Errors Defects Non HWL Goods or Services Operator Customer xxxxx LCN Audit Report Job Number xxxxxxx Equipment or software Equipment manufactured by Honeywell its affiliates and bearing the Honeywell nameplate Honeywell labour or Honeywell service as provided
21. under a Honeywell Service Agreement Computer programs sold by Honeywell in the form of machine readable instructions or documentation of produce literature bearing the Honeywell name Are limited to the failure of goods to perform a function as described in the Honeywell proposal or the Honeywell Functional Specification for those goods or in the case of standard goods limited to the failure of goods to perform a function as described in the appropriate Honeywell User Manual or Honeywell product literature Any deficiency flaw weakness or other fault excluding errors of any kind to which the goods may be subject Equipment documentation product literature labour knowledge service or computer programs in the form of machine readable instructions that is supplied installed or provided by a person other than Honeywell The person responsible for operating the Plant Document LCN cable Audit Report Page 5 Rev 0 Date xxxx 2 Introduction 2 1 Purpose of this Document The purpose of this LCN audit is to generate a report and suggested corrective actions to be taken based on an inspection done at the xxxxxxxxx This document is to be reviewed and approved by the Customer 2 2 System Architecture The Control System at xxxxxxxx consists of Universal stations GUS Application Modules APP Nodes Highway Gateways Network Interface Modules History Modules Experion Servers and Experion Stations The current LCN version
22. xxx Page 9 Document LCN cable Audit Report Rev 0 Date 4 1 4 LCN cabling Currently the LCN cabling does not have reliable source and destination labels It was unable to determine LCN cable length and cable path A reliable LCN network diagram was not available for review Many LCN cable connections were discovered which appeared to be joining LCN cable together with no LCN nodes present Each of these open Tee connections 13 in total found can act to introduce noise and errors to the LCN system The LCN A cable must be grounded at a different node as the LCN B cable However in mixed ground systems MRG and Safety Ground both cables need to be connected to the same ground i e Both connected to MRG but in different nodes or both connected to Chassis Ground but in different nodes Figure 4 No earth connection to LCN A Routing of LCN coaxial cables is critical to ensure minimal noise coupling The cables should be isolated from other power and signal cables as much as possible LCN coaxial cables crossing other cables at 90 degrees is acceptable but long parallel runs with other cables should be avoided Also there should be no risk of the LCN metal connectors making contact with other metal components Customer xxxxx LCN Audit Report Document LCN cable Audit Report Job Number xxxxxxx Page 10 Rev 0 Date xxxx f 1 gt 1 E 9 n Figure 5 Open Tee connector near P
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