Informe final Sinamics G150 (2).pdf

8/10/2019 Informe final Sinamics G150 (2).pdf

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FSINFORME DE SERVICIO TCNICO AUTOMATION & DRIVES.

Revisin 02 15 de Agoso 2012

Fecha 11 de junio del 2012

CLIENTE CMPC SANTA FE II

RUT

CONTACTO Cristian otey

ORDEN DETRABAJO N

Servicio de Emergencia.

CARACTERISTICAS DEL EQUIPOMODELO Sinamics G150

MLFB 6SL3710-1GE32-6AA0-Z D60+L10+L26+L45+M13+M21+M78+T60+X30+Y09

SERIAL

TAG 267_VSD_013B

VOLTAJEENTRADA VIN

400Vac

CORRIENTESALIDA IOUT

260A

ANTECEDENTES

En da 06 de Marzo del ao 2012 planta CMPC Santa Fe solicita la asistencia de emergencia por unadetencin no programa/solicitada del VDF con tag: 267_VSD_013B. El log de fallas del VDF indica perdidade comunicacin con Maestro de red. Se realizan mejoras a la red y se realizan pruebas de operatividaddel equipo, no encontrndose problemas.

SERVICIO REALIZADO 11 JUNIO 2012: Ing. Michael Sourit

Cliente solicita la visita de un tcnico de emergencia por aparente nueva detencin noprogramada/solicitada de VDF con tag: 267_VSD_013B.

Se revisa el histrico de eventos del equipo, encontrando varias indicaciones de detencin de motor porenclavamiento externo (falla externa 2). Tambin existe indicacin de cada de voltaje en el circuitointermedio cuya causa podra deberse a una perdida de energa de alimentacin.No se observa ninguna indicacin de fallas internas en el VDF y la inspeccin mecnica no presentadetalles.Se realiza el cambio de la unidad de control del VDF. Se sustituye la CU320 por su repuesto.Se realizan pruebas con motor energizado con programa antiguo y nueva CU320.

SERVICIO REALIZADO 3 JULIO 2012 : Ing. Jos Berrios.


Se revisa el histrico de eventos del equipo, encontrando varias indicaciones de detencin de motor porenclavamiento externo (falla externa 2).Se realizan pruebas de operatividad de componentes. Se desconecta la AOP32 para probar respuesta delVDF, no encontrndose problemas. Se prueban cables DRIVE-CLIQ, no encontrndose problemas. Semiden tensiones de control de 24VDC, no encontrndose problemas.Cliente revisa las conexiones de Puesta a Tierra de Gabinetes, no encontrndose problemas.

FOLIO 1


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FSINFORME DE SERVICIO TCNICO AUTOMATION & DRIVES.

Revisin 02 15 de Agoso 2012

SERVICIO REALIZADO 20 JULIO 2012 : Ing. Dirk Kuhn.


Se realiza mejora en acometida de cableado profibus en gabinete.Se realiza upgrade de firmware a FW V2.6.Se realiza cambio de AOP30 por nuevo repuesto.Se realizan pruebas con motor energizado con programa migrado a versin de firmware 2.6.

Detalles del diagnstico ver Anexo 1:

RECOMENDACIONES

1.-Revisar correcta acometida de cables de poder para cumplir con CEM(compatibilidad electromagntica).

2.-Revisar VDFs con firmware 2.3 en busca de registros de fallas con tiempos errneo.

3.-Revisar correcta acometida de cables Profibus en gabinete.

CONCLUSIONES

1.-Todas las actividades realizadas con anterioridad al servicio del especialista de casa matriz( 20 julio 2012),permitieron disear un plan de accin para solucionar detalles en VDF.

1.-Con los actividades realizadas por especialista de casa matriz, se logra normalizar funcionamiento de losequipos(VDF) involucrados.

3.-Las acciones realizadas podran ser aplicadas a otros equipos como accin preventiva.

ANEXO 1

Informe Ejecutivo:


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EMEN

For internal use only

Service-Report

Distribution Details on author of Service-Report

Vucicevic, Miroslav (I CS LS LD ENG

SYS 4)

Name Kuhn, Dirk

Loessel, Michael (I CS LS LD ENG SYS

2)

Department I CS EH 3 1

Becker, Christine (I CS EH 3 3) Assignment from 20.07.2012

Assignment to 23.07.2012

Details on Service-Report

Network plan 1547487

Report No. INR_10102523

Composed on24.07.2012

Details on Order

Org ID 4050523 Ordering customer I CS LS LD ENG SYS 4

Order No. 2452221003 End customer CMPC, Planta Santa Fe

SR No. no service request Locationvenida J. Hemmelmann 670

Nacimiento

Switch No. 267-VSD23-013 Country CL|Chile

Plantdesignation

Two Sinamics G150 for pump application inside cellulose/paper plant

ActivityInvestigation of strange behavior of Sinamics G150 VSD system

Exchange of OP30 and CF card (upgrade of Firmware 2.3.0->2.6.2)

Follow-up activitiesMission completed, no further actions necessary

Long time observation necessary

Suggestionsno

Contact personsSierra Joel Ivan, Sourit Michael (Siemens Chile SCL)

Sourit Nelson (Siemens Chile, Concepcion)

Attendants, furtheremployees

no

Summary

Visual investigation of Sinamics G150 installation

Discussion with CMPC end customer about history

267-23-013A: Software Backup of VFD (Starter project and CF-card)

267-23-013A: Exchange of AOP30 and CF card hardware

267-23-013A: Firmware upgrade (2.3 to 2.6), testrun of drive successful

267-23-013A: Optimization of Profibus cable connection (cable screen connected and cable shortened)

267-23-013B: Software Backup of VFD (Starter project and CF-card)

267-23-013B: Exchange of AOP30 and CF card hardware

267-23-013B: Firmware upgrade (2.3 to 2.6), testrun of drive successful 267-23-013B: Optimization of Profibus cable connection (cable screen connected and cable shortened)


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Service-Report INR_10102523 / Page 2 of 10

1 Problem description and service history

1.1 Service request from Siemens Chile

Product: Sinamics G150, 6SL3710-1GE32-6AA0-Z; 380Vac; 294A

FN: N-TD5000753060002

Details:

Sinamics is failing randomly without failure recording in the DCS control system that is connected, the Sinamics G150freezes in AOP variables are displayed with question marks (??) and the panel keys locked. The VDF stops operating

and displays message "no communication with drive." To de-energize the drive and power up again, the conditionremains ready to go, without saving alarms or faults.

Works:

A. - Review and certification of Profibus: OK.

2. - Review and improvement of grounding: OK.

3. - Change of CU320 with a new, without firmware update.

Additional Information:

1. - There are 2 Sinamics working and connected to DCS system, one in Automatic and the other one in Manual, wasdetected that Automatic is working on which it freezes.

2. - Drive failure after 5 years.

Do you know a similar problem in another place?

Do you have some recommendation?

We need a specialist to support on this problem and if possible a Field Service Engineer ready to come to Chile.

This Drives are using in very critical process and customer are requesting all our attention, because he have a lot ofdrives Sinamics and if we don't quickly answer they could change for another manufacturer

1.2 Service and problem history

There are two Sinamics G150 variable frequency converters (VFD) for a pump application atCMPC Santa Fe cellulose site. The commissioning of the units was 2005. Since 2005 bothG150 operates without any problems. Since approx. March 2012 some strange problemsoccurred with both units. The system stops without any stop command from DCS (DataControl System) and the AOP30 panels was frozen and on the operation main screen therewere question marks ? visible for the variables speed, frequency, current etc. The onlypossibility to get the system back in operable situation was to switch the power off/on. It lookslike that the CU320 didnt react. Also the Profibus values to the DCS were frozen so that theoperator didnt saw the problem directly. In the DCS it looks like that the drive is running but itwasnt. For the CMPC plant these pumps are very important and a stop critical for the plantprocess.

Siemens Chile tried to investigate the problems and exchanged a CU320 at system No: 267-VSD-23-013B (03.07.2012). But this didnt solve the problem. The strange behaviour occursagain and the unit stops sporadic without any stop command. Due to the reason that this endcustomer is very important for Siemens S.A. Chile they opened an escalation to Siemens

Germany. The assigned Siemens escalation manager is Mr. Miroslav Vucicevic (CS LS LDENG SYS 4).

2 Scope of work on site

2.1 End customer informations

After arrival on site at CMPC in Nacimiento/Chile the end customer reported to Mr. Kuhn thatthe last action what the end customer did was some earth cable improvements. He installedin both G150 cabinets some earth cable wires to the CU320 and TM31 modules. Also hefound out that there was an earth cable missing between the main potential equalization rails

and the cable racks. He reinstalled this earth cable during the last month but he didntremember exactly when. Nobody of the end customers technicians could give any exactly


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history how often and when and at which unit the problem occurs. The only thing what theycould find out was the beginning of the problems in march 2012 and that at both units theproblems occurs several times. The last problem occur maybe 17.07.2012.

2.2 Scope of work, problem presumptions, analyses and improvements

Due to the reason that after the problem occurs there was no communication of the AOP30to the CU320 and also the Profibus to the DCS freezes it looks like that the CU320 hangedup and didnt react. This can be the reason of a corrupted CF storage card. Also it is possible

due to EMI problems (missing proper EMI installation) that the CF cards became corrupted insome sections which will be accessed randomly and sporadic by the CU320 processor. Dueto the reason that Siemens Chile already exchanged the CU320 hardware without successthe next step is now to exchange the CF cards and also update the firmware to the latestversion 2.6.2.14 for CU320. This action will be done during the service visit of Mr. Kuhn20.07.2012 & 23.07.2012.

2.2.1 267-VSD-23-013A, Bomba de Transferencia A de Licor de Quemado

G150: 6SL3710-1GE32-6AA0-Z (N-TD5000753060002), 132kW, 1000rpm

CF-card (old): 6SL3054-1CD00-1AA0, 12.10.2005, Firmware: V02030000

CF-card (new): Firmware: V02060214

AOP (old): 6SL3055-0AA0-4CA2, Version E, s Q6T9377892, V02.03.07

AOP (new): 6SL3055-0AA00-4CA4, s Q6A7401516, V02.06.38

CU320 (old): 6SL3040-0MA00-0AA1, Version E

No new CU320 installed

TM31 (old) Version E

No new TM31 installed

The following steps are performed:

267-23-013A: Upload of Drive Software (Backup) (Starter V 4.3.1.0)

267-23-013A: Convert Starter project from 2.3.0.0 to V2.6.2 (Starter V 4.3.1.0)

267-23-013A: Spare CF-card with FW4.3 deleted and FW2.6.2.14 installed

267-23-013A: Exchange of AOP30 and CF-card hardware

267-23-013A: Firmware upgrade of CU320, AOP, TM31, CIB (2.3.0.0 to 2.6.2.14)

267-23-013A: Testrun under load conditions of drive successful

267-23-013A: Optimization of Profibus cable connection (cable screen connected andcable shortened)

Due to the reason that the spare CF card which was taken by Mr. Kuhn from germany to thesite was not compatible with G150 (S120 CF card) a G150 CF-card with FW 4.3 was takenfrom end customers stock. This CF-card was deleted and the G150 FW 2.6.2.14 (taken fromPridaNet) installed.

The Profibus cable inside the cabinet was not installed in a very good condition. It was verylong and also the cable screen of the Profibus cable was not connected directly at theCU320. The distance between the CU320 Profibus connector and the cable screenconnection should be as short as possible to avoid EMI problems.


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The motor cables screen connections is not made very good. The cables are connected onlywith pig tails to the earth and not with a clamp around the cable screen for a flat 360connection. Pig tails can destroy the EMI effect of the cable screen and can cause EMIproblems!

Picture 2.2.1.a, FW version old, before FW upgrade

Picture 2.2.1.b, FW version new, after FW upgrade


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Picture 2.2.1.d, motor cables without correct flat 360 cable screen connection(only with pig tails)

Picture 2.2.1.e, Alarm history of G150 unit no A before FW upgrade

Some alarm entries are very strange. It says that the alarm occurred at 0days and it wasreset at 1230days. This can not be. Maybe with the FW 2.3 there were some problems withthe alarm history?

If the alarm entries are correct there were no strange alarms during the last 1230days. Only aprofbus timeout and an undervoltage of the DC link happened at day 1222 & 1076. But thiswill also occur if the end customer switches off the complete cabinet.

The alarm history didnt show abnormal faults.

2.2.2 267-VSD-23-013B, Bomba de Transferencia B de Licor de Quemado

G150: 6SL3710-1GE32-6AA0-Z (N-TD5000753060001), 132kW, 1000rpm

CF-card (old): 6SL3054-1CD00-1AA0, 12.10.2005, Firmware: V02030000

CF-card (new): 6SL3054-1CD00-1AA0, Firmware: V02060214

AOP (old): 6SL3055-0AA0-4CA2, s Q6T9377876, FW V02.03.07

AOP (new): 6SL3055-0AA00-4CA4, s Q6A7401516, FW V02.06.38

CU320: 6SL3040-0MA00-0AA1, Version G

This CU was already exchanged by Siemens Chile 03.07.2012TM31 (old) Version E


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No new TM31 installed

Picture 2.2.2.a, FW version old, before FW upgrade

Picture 2.2.2.b, FW version new, after FW upgrade


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Picture 2.2.2.c, Profibus cable inside G150 cabinet No. B

The following steps are performed:

267-23-013A: Upload of Drive Software (Backup) (Starter V 4.3.1.0)

267-23-013A: Convert Starter project from 2.3.0.0 to V2.6.2 (Starter V 4.3.1.0)

267-23-013A: Spare CF-card with FW4.3 deleted and FW2.6.2.14 installed

267-23-013A: Exchange of AOP30 and CF-card hardware

267-23-013A: Firmware upgrade of CU320, AOP, TM31, CIB (2.3.0.0 to 2.6.2.14)

267-23-013A: Testrun under load conditions of drive successful

An optimization of the Profibus cable was not permitted by the end customer. He was afraidto open the Profibus loop. But it is strongly recommended to shorten the Profibus cable andalso connect the cable screen directly at the CU320 and PLC side to eliminate possible EMIproblems.

Picture 2.2.2.d, Alarm history of G150 unit no B

Since 03.07.2012 (new CU320 installed by Siemens Chile) there is no abnormal alarm entry.


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2.3 Next steps and further recommendations

The reason for this problem couldnt found out exactly during this service visit. Both G150units operate without problems during the service visit 20.07.2012 23.07.2012.

Due to the reason that in the past suddenly both G150 makes problems it is most unlikelythat some parts are damaged inside both cabinets. Most likely something changed in theinstallation. Mr. Nelson Sourit (Siemens Chile) told that he made a new commissioning ofsome other converters which are also installed close to these G150. Maybe this cause now a

different EMI condition and makes an influence to the G150 cabinets.Generally the complete Installation is not EMI proof. The motor cables and also the Profibuscables are not installed in a way to eliminate EMI. Particular around and inside the G150 it isvery important to have a focus on a proper EMI installation. It can be that the Profibusinformation gets corrupted due to EMI influence. This can produce exactly the effect that theunit stops without any message and fault. If one of the Off-command bits inside the Profibustelegram gets 0 for a short time the G150 will switch off without any fault (like a normal stop).Also a high frequency noise current which flows through the electronic boards can interruptthe CU320 processor and a restart is necessary. This theory explains also thecommunication problems of the AOP30 because if the CU320 processor stucks the serialcommunication to the AOP stops also and the ?-marks at the AOP screen will appear.

Generally it is difficult to find the problem but first the installation should be correct andimproved.

For a better EMI installation the following steps are recommended:

-Shorten the Profibus communication cables (short as possible)

-No long ways and cable loops of Profibus cable inside the cabinet

-Prevent communication cable paths which are parallel or close to power rails or cables

-Connect the cable screens correctly (both ends also at the PLC side and connect the cablescreen close to the end of the cable, only some cm).

Note: At the CU320 there is a special clamp for Profibus underneath the plastic cover

-Connect all moveable metal parts (cabinet doors, cabinet roof, terminal box etc.) togetherwith a special EMI braided copper ribbon (see picture 2.3.a). Dont use normal cable wires!

Picture 2.3.a braided copper ribbon

-Connect the motor cable screen correctly. Dont make pig tails. Connect the cable screenwith special clamps 360 around the cable screen to the rail. Also connect the cable screenat the motor side correctly.

- Make sure that all metal parts are connected with a braided copper ribbon.

Note in picture 2.3.b the G150 No. A.: The cable screens of the Profibus are connected butthere is a gap between the metal of the cabinet box and the earth rail. Such installations willnot give any positive EMI solution because the rail is not connected to the cabinet box! ForHF EMI currents normal cable wires are a big resistance. HF currents will only flow off over alarge metal surface (skin effect). This is also the reason why pig tails will not have anypositive effect against EMI problems.


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Picture 2.3.b, metal gap in cabinet G150 No. A

The end customer has to observe the units again during the next few month. And also it isrecommended to write all problems exactly down with the date, time and what exactlyhappened.

If the change of the CF-cards/AOP30 will not solve the problem and the problem occursagain the next steps should be an improvement in the EMI installation by Siemens Chile orend customer! If it is for sure that the installation is in a good condition it is possible toanalyse further things but generally, faults like that are most of the time the result of an EMIproblem and a bad EMI installation!

3 Spare parts

Material / spares

Table 3.a Spare parts

The old AOP and CF cards are overhand to the end customer. Due to the reason that theCF-cards which was taken by Mr. Kuhn to the site were the wrong one this cards couldnt beused. But Siemens Chile (Mr. Michael Sourit) asked to get it for another projects. Thereforethese 2 cards (S120 CF cards) are left in Siemens Santiago office.

Due to the reason that the spares were registered at the Chile customs office (after arrival atthe customs) Siemens Chile paid tax for the parts.

4 Tools and Instruments (Sirent)

No tools rented for this service.

Rckgabemenge(nicht bentigt) /not used material:

Materialbezeichnung(s. vorliegender Lieferschein) /

material(according to dispatch note):

MLFBSiemens-Materialnr. /

Siemens material number:

Menge /amount:

davon Verbleibbeim Kunden /amount used

at site:ausgepackt /unpacked:

verpackt /still

packed:

Sinamics AOP30 6SL3055-0AA00-4CA4 2 2 0 0

CF-card Sinamics S120 6SL3054-0CG00-1AA0 2 2 0 0


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5 Travel / working hours

5.1 Preparation time:

Date Hours Remarks

16/07/12 (5h) Service request, E-Mails, problem analyses, VISA

16/07/12 (4h) Travel preparation, flight, spare parts etc.

18/07/12 (5h) Meeting & discussions Siemens Santiago office

19/07/12 (9h) Travel preparations, Waiting for PET/VISA + spares

Table 5.1.a, preparation time

5.2 Travel- / Workinghours:

Date Time Remarks (Chile -6h)

17/07/12 15:00 17:00 (02h) Rental car and spares pick up

17/07/12 17:00 24:00 (07h) Travel time Germany Chile (Santiago)

18/07/12 00:00 12:00 (18h) Travel time Germany Chile (Santiago Siemens)

20/07/12 05:00 11:00 (06h) Travel time Chile (Santiago) - CMPC Nacimiento

20/07/12 11:00 16:00 (05h) Working time at CMPC Santa Fe Nacimiento

20/07/12 16:00 18:00 (02h) Travel time CMPC Nacimiento Conception (Hotel)

23/07/12 06:30 08:30 (02h) Travel time Concepcion (Hotel) - CMPC Nacimiento

23/07/12 08:30 16:30 (07h) Working time at CMPC Santa Fe Nacimiento

23/07/12 16:30 24:00 (07h) Travel time CMPC Nacimiento Santiago (Hotel)

25/07/12 10:00 19:00 (08h) Travel time Chile Hotel Rio de Janeiro Hotel

26/07/12 18:00 24:00 (06h) Travel time Rio de Janeiro Hotel Germany

27/07/12 00:00 19:00 (14h) Travel time Rio de Janeiro Hotel Germany

Table 5.2.a, travel-, working hours

5.3 Final work:

Date Hours Remarks

24/07/12 (04h) Meeting, VISA issues at Santiago Siemens office

24/07/12 (05h) Siemens internal IN report

30/07/12 (03h) Siemens travelling expenses statement

Table 5.3.a, finishing worksgd. D. Kuhn

Documents

Informe final Sinamics G150 (2).pdf