Siemens SINAMICS MV 9LD4110-7EX70-1AA0 Operating Instructions Manual Download

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Summary of Contents for SINAMICS MV 9LD4110-7EX70-1AA0

Page 1: ...Edition 5ZQF 9 01 3 5 4536 5 0 4 45 5 0 4536 5 0 4 www siemens com LDA 02 2022 SE 1BSUZ POUSPM 6QHSBEF 4 4 7 ...

Page 2: ......

Page 3: ...1872818 Introduction 1 Safety information 2 Description 3 Preparations for use 4 Mounting 5 Electrical connection 6 Commissioning 7 Operation 8 Maintenance 9 Spare parts 10 Disposal 11 Service Support A Technical specifications and drawings B Literature and references to SINAMICS GL150 documentation C ...

Page 4: ...are those who based on their training and experience are capable of identifying risks and avoiding potential hazards when working with these products systems Proper use of Siemens products Note the following WARNING Siemens products may only be used for the applications described in the catalog and in the relevant technical documentation If products and components from other manufacturers are used...

Page 5: ...h 19 2 7 5 Measures for operator protection in electromagnetic fields 19 2 8 Residual risks 19 2 9 Security information 21 3 Description 23 3 1 Area of application 23 3 2 Safety concept 23 3 2 1 Safety components and functions 24 3 2 2 External safety components 24 3 2 3 Protection and monitoring functions of internal components 25 3 2 4 Protection and monitoring functions for external components ...

Page 6: ... 5 12 Speed sensing for three motors only starting converters option A53 42 3 5 13 Speed sensing for four motors only starting converters option A54 43 3 5 14 Dry transformer monitoring option A72 43 3 5 15 Oil transformer monitoring option A73 43 3 5 16 Extended dry transformer monitoring option A74 43 3 5 17 Extended oil transformer monitoring option A75 44 3 5 18 Starting converter for a motor ...

Page 7: ...wer supply with 1 AC 230 V infeed option K74 53 3 5 50 Demagnetization device for output transformer for starting converters option L30 54 3 5 51 Cabinet lighting in the control section option L50 55 3 5 52 Temperature controlled and air humidity controlled anti condensation heating option L58 56 3 5 53 Brass cable entry for power and signal cables option M36 56 3 5 54 Separate installation M49 56...

Page 8: ... 6 3 Electromagnetic compatibility 85 6 4 Potential concept 88 6 5 Connecting equipotential bonding conductors 88 6 6 Using the equipotential bonding strip and shield bus 89 6 7 Connecting the protective grounding 89 6 8 Laying signal cables 90 6 8 1 Laying the cable shields 90 6 9 Separating adjacent cabinets using unsuppressed contactors 90 6 10 Laying additional wiring 91 6 11 Connecting the po...

Page 9: ...ings and faults 106 8 5 2 Diagnostics 106 8 5 2 1 Diagnostics via LEDs 106 8 5 2 2 Diagnostics via parameters 108 8 5 2 3 Indicating and rectifying faults 111 9 Maintenance 113 9 1 Safety instructions for maintenance 113 9 2 Grounding the system 116 9 3 Opening the device 117 9 4 Maintenance 117 9 4 1 Replacing a fan 117 9 4 2 Replacing the back up battery of the AOP30 operator panel 117 9 5 Clean...

Page 10: ...rts 137 11 Disposal 139 11 1 Disposing of packaging material 139 11 2 Removing device components and old devices 139 A Service Support 141 B Technical specifications and drawings 143 B 1 Standards and regulations 143 B 2 Environmental conditions 144 C Literature and references to SINAMICS GL150 documentation 147 Index 149 Table of contents 3rd Party LCI Control Upgrade 8 Operating Instructions 02 ...

Page 11: ...cal evaluation for each project 1 2 About these Operating Instructions Note Note regarding these operating instructions These operating instructions are based on a control upgrade from SIMOVERT S to SINAMICS GL150 technology Deviations can occur as a result of the different design principles of third party converters These Operating Instructions describe the device and provide you with information...

Page 12: ...mbered list Always perform the steps in the order given Lists are formatted as bulleted lists Lists on the second level are hyphenated Note Thenoteprovidesyouwithadditionalinformationabout theproductitself handlingtheproduct and the relevant documentation Introduction 1 3 Text format features 3rd Party LCI Control Upgrade 10 Operating Instructions 02 2022 A5E31872818 ...

Page 13: ...his documentation may only be operated by personnel qualified for the specific task in accordance with the relevant documentation for the specific task in particular its warning notices and safety instructions Because of their training and experience qualified personnel can recognize any risks involved with handling these products systems and avoid any possible dangers 2 3 The 5 safety rules To en...

Page 14: ...prolonged length of time Touching live parts can result in death or serious injury Carefully comply with the 5 safety rules Page 11 Operate the device properly Service and maintain the device regularly and correctly Danger due to high voltage in operation When operating this equipment very high voltages develop Even after switching off the mains voltage or while the connected machine is still turn...

Page 15: ... Touching live parts can result in death or serious injury Carefully comply with the 5 safety rules Work on the converter must be carried out by qualified appropriately trained personnel Strictly observe the warnings provided in this documentation and the safety relevant information on the product itself Danger caused by arcing Hazards caused by arcing can occur as result of the following factors ...

Page 16: ...condensation heating is switched off before carrying out any repair or maintenance work Risk of injury at places that are difficult to access If you do not use appropriate protective equipment when working in places that are difficult to access you are at risk of injury For example sharp edges and splinters can cause injuries to the head and skin If you carry out work in the upper section using un...

Page 17: ...rious physical injury can result As a consequence it is not permissible for people with pacemakers to stand close to the device NOTICE Data loss Electromagnetic fields can cause data loss to magnetic or electronic data storage media Therefore do not carry magnetic or electronic data storage media with you Nominated persons in control of electrical installations can find further information on elec...

Page 18: ... following conditions is met The measuring device is grounded with a protective conductor for example The measuring head of a floating measuring device has been discharged directly before the measurement The necessary ESD protective measures for the entire working range for electrostatically sensitive devices are illustrated once again in the following drawings Precise instructions for ESD protect...

Page 19: ...ction regulations and the regulations for using personal protective equipment are observed during all work The operating instructions and the complete product documentation are always available when carrying out any work The technical data as well as the specifications relating to the permissible installation connection ambient and operating conditions are taken into account at all times Only qual...

Page 20: ...unding conductor from one of the following variants According to local wiring regulations Calculated according to IEC 60364 5 54 543 1 Half a phase conductor cross section 2 7 3 Installation site safety Danger due to an unsecured installation location This device is used in industrial power installations Improper use incorrect operation insufficient maintenance and access by unauthorized persons c...

Page 21: ...ealth and safety regulations or the applicable national regulations in the country of installation In Germany electromagnetic fields are subject to regulations BGV B11 and BGR B11 stipulated by the German statutory industrial accident insurance institution Display adequate hazard warning notices on the installation Place barriers around hazardous areas Take measures e g using shields to reduce ele...

Page 22: ...ftware errors Operating and or environmental conditions outside of the specification External influences damage For instance a fault can have the following effects Extraordinarily high temperatures including open fires as a result of the fault Emissions of light noise particles or gases Devices with Open Type IP20 degree of protection must be installed in an electrical room or a comparable environ...

Page 23: ... machines and networks In order to protect plants systems machines and networks against cyber threats it is necessary to implement and continuously maintain a holistic state of the art industrial security concept Siemens products and solutions constitute one element of such a concept Customers are responsible for preventing unauthorized access to their plants systems machines and networks Such sys...

Page 24: ...m siemlda en 109751848 Security Guidelines for SIMATIC HMI devices Manual Notes relating to Industrial Security for HMI devices are available here https support industry siemens com cs de en view 109481300 Safety information 2 9 Security information 3rd Party LCI Control Upgrade 22 Operating Instructions 02 2022 A5E31872818 ...

Page 25: ...rbine sets Hydroelectric power generators Large synchronous motors on weak power systems Continuous duty converter The output frequency typically lies between 0 and 105 Hz The converter is used for the variable speed drive of the following driven machines for example Blowers Fans Pumps Turbo compressors Reciprocating compressors Extruders and mixers Continuous flow conveyors Marine propellers Driv...

Page 26: ...l be present even after shutdown If live parts are touched this can result in death or severe injury A grounding switch is not installed The system operator must therefore ensure that there is sufficient grounding Ensure sufficient grounding during work on the power unit Further information on grounding can be found under Safety information for maintenance and repairs 3 2 2 External safety compone...

Page 27: ...or the control hardware Protection against communication failure between the closed loop control and the power unit Anti condensation heating 3 2 4 Protection and monitoring functions for external components Transformer and motor can be monitored in the device A fast protective shutdown that you can activate for external problems e g short circuits is present 3 3 Power unit 3 3 1 Power unit compon...

Page 28: ...Stack Adapter The power stack adapter PSA acts as an interface between the power unit and the open loop closed loop controller The Power Stack Adapter is also where the power unit is electrically isolated from the open loop closed loop controller The DRIVE CLiQ serial communication interface ensures the exchange of data between the Power Stack Adapter and Control Unit CU In the Power Stack Adapter...

Page 29: ...VT combination module and sent via the fiber optic cable to the power stack adapter The primary circuit is separate from the secondary circuit 3 3 1 4 Surge arresters Overvoltages can occur when inductive loads are switched for example in the case of transformer disconnections at no load These overvoltages can pose a danger to the converter For indoor systems surge arresters without spark gap are ...

Page 30: ...ee circulating pump pumps the hot water into the heat exchanger The external raw water circuit cools the hot deionized water The cooled deionized water is pumped back to the drive Internal de ionized water circuit The internal water circuit is filled with deionized water deionized fully desalinated water The conductivity of the cooling water must be 1 µS cm in operation NOTICE Material damage due ...

Page 31: ...on exchanger is installed in the re cooling unit The ion exchanger is connected in the deionized water circuit If the conductivity exceeds the permissible limits then a message is output In this case replace the filling in the ion exchanger with an original filling If the conductivity continues to rise the re cooling unit and drive are switched off The ion exchanger is a consumable and is not cove...

Page 32: ...tronically The open loop and closed loop control systems prevent an impermissible rise in any overcurrent by switching the line side converter to inverter operation NOTICE Fault due to incorrect configuration of line supply and transformer impedances On the line side the converter is designed for short circuit proof operation Short circuit proof operation is only guaranteed if the line supply and ...

Page 33: ...ol and protection complex programmable logic device The thyristor electronics are part of the thyristor control and monitoring system They work together with the Power Stack Adapter PSA The thyristor electronics can control all line side and motor side converters which are supplied with voltage by the gate current of the thyristor RC circuit The thyristor electronics module has the following tasks...

Page 34: ...heckback signal and the synchronizing voltage the offset angle can be determined in a test operation The information that can be derived from the correlation between the command and the generated signals includes 1 Commutation errors 2 Bridge short circuit 3 Inverter shoot through 4 Misfiring 3 3 2 3 Voltage actual value sensing The voltage actual values are measured using AVT combination modules ...

Page 35: ...s Transformer Measuring resistors Surge suppressor 80 kHz power supply Figure 3 5 Components of the motor voltage sensing Description 3 3 Power unit 3rd Party LCI Control Upgrade Operating Instructions 02 2022 A5E31872818 33 ...

Page 36: ...values Here the voltage drop at the resistors between ground and the following artificial neutral points is compared Three phase current input line side Three phase output at the motor If the warning threshold is exceeded an alarm is output If the fault threshold is exceeded an alarm message is output and the converter is switched off Description 3 3 Power unit 3rd Party LCI Control Upgrade 34 Ope...

Page 37: ...Using them in conjunction with the surge suppressor provides personnel protection Precision resistors Surge suppressor and base point resistor Figure 3 8 Operator protection ground fault detection See also Protection function of ground fault detection Page 105 Description 3 3 Power unit 3rd Party LCI Control Upgrade Operating Instructions 02 2022 A5E31872818 35 ...

Page 38: ... the drive may still be operational or high voltages may still be present Residual voltages can result in death severe injury or significant material damage The Safety shutdown function can neither ensure that the drive stops immediately nor can it ensure that residual voltages do not still exist at the output terminals and within the unit Make sure that the drive no longer rotates and that there ...

Page 39: ... state of the drive unit RUN green ALARM yellow FAULT red LOCAL REMOTE green Help function describing causes of and remedies for faults and alarms Function keys for prompted navigation through the menus Realtime clock for the time stamping of faults and for setting up simple time controls LOCAL REMOTE switchover for selecting the operating location Two stage security concept to protect against uni...

Page 40: ...setpoint using the alphanumeric keys Using the numeric keypad any speed ranging between the maximum and minimum speed can be entered Function keys These keys havedifferent functions depending on the menu The respective function appears in plain text above the key 3 4 5 Description of the components Further information is available in the following documents Additional information about connecting ...

Page 41: ...he interface to include additional Terminal Modules 3 4 5 4 Voltage Sensing Module The VSM10 Voltage Sensing Module measures the actual line voltage values The connections are wired internally to the customer terminal block 3 4 5 5 DC DC converter DC DC converters are used to provide a stable and reliable 24 V power supply for the TM15 TM31 terminal module the circuit breaker and the SIMATIC S7 op...

Page 42: ...nnecting circuit breakers Page 94 3 5 2 Terminal strip extension Option A06 Withthe option thenumberofcontrolandstatussignals availableviaterminalstripsis extended using one additional TM31 and one additional TM15 Terminal Module More information is provided in document Supplementary component descriptions https www lda portal siemens com siemlda en 109768128 3 5 3 Motor monitoring option A09 The ...

Page 43: ... g modem transformer monitoring motor monitoring etc are implemented in this open loop control system with the associated input and output modules Customer specific functions e g communication with a higher level control system can also be implemented in the open loop control system The SIMATIC S7 controls the communication between the Control Unit and the excitation You will find details of this ...

Page 44: ...ctronics section of the power unit Operation at temperatures about 40 C up to a maximum of 45 C is therefore possible The electronic compartment in the reactor area is designed as a separate low voltage compartment with its own doors and if applicable fans in the doors It therefore allows you to open the electronic compartment during operation for the replacement of components The fans are require...

Page 45: ...the dry type transformer are evaluated via the additional TM15 module 3 5 15 Oil transformer monitoring option A73 Alarm and fault messages to the oil filled transformer are evaluated via the additional TM15 module These are solely binary signals Up to eight signals are output per step up transformer or step down transformer 3 5 16 Extended dry transformer monitoring option A74 Binary and analog s...

Page 46: ... implement the interfaces with the parallel switching device and the excitation equipment 16 signals are required for each interface With the two additional TM15 terminal modules two to three interfaces can be processed 3 5 20 Starting converter for three motors interfaces for parallel switching device and static excitation equipment option A93 Two additional TM15 terminal modules are used to impl...

Page 47: ...ansformer is connected in parallel to the generator on whose primary side cables are still connected This arrangement forms an oscillating circuit with a natural frequency in the order of magnitude of 1 kHz The damping circuit dampens the oscillations to such an extent that no premature zero crossings of the voltage on the thyristor occur after the thyristor has been switched off 3 5 24 Damping sw...

Page 48: ...rter is not dimensioned for continuous operation at nominal power 3 5 26 Duty cycle option C62 The starting frequency converter is dimensioned in such a way that the specified duty cycles can be performed The duty cycles are possible with the described operating modes without thermal overload at maximum ambient temperature The gas turbine is started in the normal start operating mode The gas turbi...

Page 49: ...y cycles are possible with the described operating modes without thermal overload at maximum ambient temperature The gas turbine is started in the normal start operating mode The gas turbine is partly started with upstream ventilation of the exhaust gas section and the boiler Operating mode Power of the starting frequen cy converter SFC Operating time min of the SFC nominal power or current at Ug ...

Page 50: ...n 70 20 Pause 0 1 1 Normal start 100 4 Pause 0 2 5 Ventilation 70 20 Pause 0 1 2 Normal start 100 4 Pause 0 2 5 Ventilation 70 20 Pause 0 1 3 Normal start 100 4 Pause 0 2 5 Ventilation 70 20 Pause 0 1 4 Normal start 100 4 Non operational period 0 120 It can be derived from the load cycles that the starting frequency converter is not dimensioned for continuous operation at nominal power 3 5 29 Duty...

Page 51: ...ith an auxiliary diesel so that starting is possible with a reduction in the power drawn from the starting converter If necessary you must parameterize limits and times deviating from the standard 3 5 31 Phase shifter start option E07 The generator that is decoupled from the gas turbine is accelerated to a speed slightly above the synchronous speed via the starting converter The starting converter...

Page 52: ...u Veritas BV option E31 The design and implementation of the converter corresponds to the requirements of the Bureau Veritas classification society 3 5 36 Suitable for marine use with individual certificate from Det Norske Veritas Germanischer Lloyd DNV GL option E51 The design and implementation of the drive corresponds to the requirements of the Det Norske Veritas Germanischer Lloyd classificati...

Page 53: ...be networked using PROFINET Additional information about the communication module is provided in document Supplementary component descriptions https www lda portal siemens com siemlda en 109768128 3 5 41 Modbus Plus interface option G21 Using the Anybus X Gateway communication module the converter can be connected to the Modbus Plus third party bus system 3 5 42 Modbus RTU Slave interface option G...

Page 54: ... with the open loop control cabinet of the excitation equipment The sockets are permanently installed in the open loop control cabinet side panel The corresponding connectors in the converter can be freely connected to the terminals with the adequate lengths provided The connectors are defined for the following signal and supply voltages Table 3 3 Connector assignment for voltages less than 60 V S...

Page 55: ...ROFIBUS connection for process control this diagnostics module also allows the exchange of signals via digital and analog inputs and outputs The signals are transmitted as isolated signals 3 5 47 Temperature evaluation of the MV transformer option K63 An additional evaluation unit measures the temperatures at specific points in the starting converter transformer using PT100 resistance thermometers...

Page 56: ...between the converter output and the motor this measuring circuit voltage is reduced in the ratio of the transformation ratio The step up transformer can become distorted in its magnetic characteristic curve or saturated due to prior activation As a result the measuring signal required for tracking may be distorted or may not be transmitted Incorrect tracking is possible In order to cancel the phy...

Page 57: ...UFH N9 WR N9 0066 60 a 09 N9 N9 N9 6 QFKURQL DWLRQ VRXUFH Figure 3 10 Block diagram of the demagnetization device 3 5 51 Cabinet lighting in the control section option L50 The LED cabinet lighting is adhered to the cabinet wall by means of magnetic fasteners The lamp automatically switches itself on by means of an integrated motion detector The lamp automatically switches itself off after about fi...

Page 58: ... is an exception This is included in the scope of supply for the starting converter 3 5 55 Low noise fan option M65 Sound pressure is minimized compared to standard setup through the use of special fans 3 5 56 Suitability for marine use option M66 The converter design corresponds to the requirements of the following classification societies Det Norske Veritas Germanische Lloyd DNV GL Lloyds Regist...

Page 59: ...erter 3 5 59 Customer specific version option X30 The device was ordered with option X30 for a customer specific version More information is provided in Technical Data The information there supersedes the corresponding contents of the operating instructions Please read and follow this information carefully Description 3 5 Options 3rd Party LCI Control Upgrade Operating Instructions 02 2022 A5E3187...

Page 60: ...Description 3 5 Options 3rd Party LCI Control Upgrade 58 Operating Instructions 02 2022 A5E31872818 ...

Page 61: ... circuit and simultaneous failure of the closed loop control system are dangerous if the transformer configuration is incorrect This can result in death serious injury or material damage When selecting and dimensioning the transformer observe the notes regarding the short circuit behavior for fuseless technology in Chapter Fuseless technology Page 30 As well as adjusting the input voltage of the c...

Page 62: ...ries In general transformers are configured for a line voltage range of 5 in accordance with IEC 60076 1 they may be configured differently on request Coupling factor Each converter causes current harmonics as a result of non sinusoidal input currents and commutation processes These current harmonics distort the voltage which results in a deformation of the supply voltage for subsequent windings T...

Page 63: ...ount the following specifics Converter transformer for a B6C bridge Percentage of the current harmonics Voltage load Control angle for feedback 90 or 40 electrical Transformation ratio during idling Short circuit voltage uK for the step up transformer 4 1 3 Requirements for the circuit breaker provided by the customer To ensure adequate protection for converters the circuit breaker provided by the...

Page 64: ...must use it to detect all shutdown conditions of the circuit breaker internally and externally e g Buchholz fault You must program two tripping contacts with equivalent functions One tripping contact is wired to the leading contact input of the converter The second tripping contact is wired to the undervoltage release of the circuit breaker The voltage at the undervoltage coil is queried via an op...

Page 65: ...KH VZLWFKJHDU V VWHP PXVW EH VSHFLILHG ZKHQ RUGHULQJ WKH FRQYHUWHU 3 6 VWHP VLGH WULSSLQJ FRQWDFWV 4 RU GHWDLOV VHH FLUFXLW GLDJUDP B6 MSR B6 MSR SM 2 3 kV bis 36 kV 3 50 60 Hz 1 8 2 3 165 165 4 Figure 4 2 Example Circuit breaker control Preparations for use 4 1 Notes for system integrators 3rd Party LCI Control Upgrade Operating Instructions 02 2022 A5E31872818 63 ...

Page 66: ...e class The converter can run even if a ground fault is present In this case the voltage to ground is the line to line voltage 4 Where the current is concerned take into account the rms value for dimensioning purposes as the rms value also contains the harmonic currents Cable capacitance and inductance Cable capacitances and inductances can influence the commutation The cable capacitance has an in...

Page 67: ...standard for cabling the power unit static excitation equipment and closed loop control The cable related cabinet distances can be specified for the project Shield support Observe the notes in Chapter Connecting the power unit Page 91 Reference Heinold Lothar publ Kabel und Leitungen für Starkstrom I Publicis Corporate Publishing 1987 4 2 Requirements when mounting and installing the device 4 2 1 ...

Page 68: ...hock and tilt indicators to monitor for damage during transit Carefully check the shock and tilt indicators before commissioning the device WARNING Danger to life as a result of unsafe operation Safe operation of the device is not guaranteed if the shock or tilt indicator has tripped responded This can result in death serious injury or material damage If one of the indicators has tripped do not pe...

Page 69: ...r possible damage Replace load suspension devices if they are damaged Before use check that the load suspension devices are correctly attached When lifting use only approved and undamaged lifting gear of sufficient rated capacity Check the lifting gear prior to its use WARNING Danger to life as a result of damaged load suspension devices and lifting gear If the load suspension devices and lifting ...

Page 70: ...licenses You must observe the specifications to avoid transport damage to the enclosure and you must maintain the permissible climatic conditions during operation in accordance with IEC 60721 3 1 2 3 Please also observe the Technical specifications instructions For lifting the device always use certified and adequately dimensioned cable guiding and spreading devices that are in absolutely perfect ...

Page 71: ... transport equipment and lifting tools Observe the center of gravity specifications A label or stamp is attached to each transport unit that defines the center of gravity of the cabinet Do not tilt the device or allow it to fall The following figure shows the centers of gravity as an example Carefully note the centers of gravity when performing any lifting or installation work URQW YLHZ 6LGH YLHZ ...

Page 72: ...anger due to incorrect transport If the transport unit is not properly transported with a crane the transport unit cabinet could fall or tip over This can result in death serious injury or material damage Carefully comply with the safety instructions relevant for transport Carefully observe the information regarding the center of gravity on the transport unit WARNING Danger due to unsuitable cross...

Page 73: ...terial damage Use suitable lifting rods for transporting The weight of the cabinet is indicated on the rating plate NOTICE Material damage to the drive when incorrectly lifted If the transport unit is lifted incorrectly this can damage the decorative trim cabinet doors or fans Protect the cabinet and protruding parts against damage Always lift the transport units with the appropriate spreading dev...

Page 74: ...nit the device to tip over resulting in death serious injury or damage inside the cabinet The forks of the truck must protrude at the rear of the transportation unit Only use forklifts approved for the purpose of transporting the devices Transportation with the crane WARNING Danger due to falling transport unit cabinet If the lifting gear or load suspension devices were to fail the transportation ...

Page 75: ...g unit Refer to the operating instructions of the re cooling unit for notes relating to transport and storage NOTICE Damage to the ion exchange cartridge as a result of frost If the ion exchange cartridge is exposed to frost it may be damaged Only transport and store the ion exchange cartridge in non frosty conditions More information is available in the re cooling unit s operating instructions Pr...

Page 76: ...Protect the cabinets against dust until they have been commissioned To do this cover the ventilation openings and keep the doors closed Do not remove the safety instructions and center of gravity specifications from the cabinet 4 5 2 Removing load securing devices WARNING Danger to life as a result of fixing materials under tension If fixing materials are released suddenly during opening and peopl...

Page 77: ... device during operation During operation the shipping indicators can become detached and fall into the device as a result of high temperatures Material or temperature damage may result Remove the shipping indicators before commissioning Remove any adhesive residue from the shipping indicators using methylated spirits See also Checking shock and tilt indicators Page 66 4 6 Storage 4 6 1 Emptying t...

Page 78: ...sure If the blow out pressure used exceeds 6 bar the piping and the heat sink can become damaged Do not exceed the blowout pressure of 6 bar Avoid pressure surges 4 6 2 Storing a device If you are not going to commission the device immediately after delivery ensure that it is stored correctly Preconditions and preparations Store goods only in undamaged packaging Unpack the goods if the packaging i...

Page 79: ...protection against ground moisture and water place the equipment and crates on pallets wooden beams or foundations Ensure that the air circulation under the equipment is not impeded Place wooden spacer blocks between the covers and the device Do not place covers or tarpaulins completely around the equipment on the floor NOTICE Damage to the device as a result of incorrect storage Incorrect or exce...

Page 80: ...e cartridge as a result of frost If the ion exchange cartridge is exposed to frost it may be damaged Only transport and store the ion exchange cartridge in non frosty conditions More information is available in the re cooling unit s operating instructions Preparations for use 4 6 Storage 3rd Party LCI Control Upgrade 78 Operating Instructions 02 2022 A5E31872818 ...

Page 81: ...ath serious injury and material damage Therefore remove dirt deposits after installation Then keep the doors closed The device must be professionally cleaned in the event of pollution in the form of conductive dust particles e g from welding work Contact the service center in this regard Danger due to defective seals When working on the device seals at the doors roof panels as well as front rear a...

Page 82: ...sociated sections Table 5 1 Tightening torque for screws Screw type Soft materials S31 Hard materials S22 Hard materials S13 nm in lb nm in lb nm in lb M3 0 8 7 1 1 8 15 9 1 3 11 5 M4 1 8 15 9 3 9 34 5 3 0 26 6 M5 3 0 26 6 7 8 69 0 6 0 53 1 M6 6 0 53 1 13 0 115 10 0 88 5 M8 13 0 115 32 0 283 25 0 221 M10 25 0 221 65 0 575 50 0 443 M12 50 0 443 115 0 1020 88 0 779 M16 115 0 1020 270 0 2390 215 0 19...

Page 83: ...5 M12 18 159 3 M16 30 265 5 Observe the tightening torques of the terminal manufacturer and the test torques according to DIN EN 60999 1 VDE 609 1 5 4 Connect to the foundation Four holes for M12 screws are provided on each cabinet panel to secure the cabinet to the foundation Information on mounting holes and their fixing dimensions are specified in the dimension drawing Install the transport uni...

Page 84: ...Mounting 5 4 Connect to the foundation 3rd Party LCI Control Upgrade 82 Operating Instructions 02 2022 A5E31872818 ...

Page 85: ...el that are not experts in the field to the converter manufactured under contract will immediately invalidate permission to operate the system These include for example any actions contrary to recommendations provided in operation or maintenance manuals and other documentation This applies to the complete plant drive system drive train in which the converter is installed Until recertification it i...

Page 86: ... material damage Use the cable ducts and cable entries on the roof to route the cables when electrically connecting the cabinets Material damage caused by parts that can be magnetized The use of magnetizable parts e g ferrous cable clamps is not permitted Using parts and components that can be magnetized can cause damage Only use parts that consist of non magnetic material Cable fire caused by hig...

Page 87: ...operation without interference or disturbances route the power cables and signal lines separately Interference for example will result in the device not behaving as expected When connecting and routing power and signal cables observe the instructions provided in chapter Electromagnetic compatibility Page 85 6 3 Electromagnetic compatibility The following fundamental information and guidelines faci...

Page 88: ...cables must cross at a right angle This especially involves sensitive and noisy signals Class 1 Unshielded cables for 60 V DC Unshielded cables for 25 V AC Shielded analog signal cables Shielded bus and data cables Operator panel interfaces incremental absolute encoder cables Class 2 Unshielded cables for 60 V DC and 230 V DC Unshielded cables for 25 V AC and 230 V AC Class 3 Unshielded cables for...

Page 89: ...ncorrectly connected cable shields Incorrect connection or damaging of the cable shield can impair the function of the system Handle the cable shield carefully Ensure that the cable shield is correctly connected Bridge shield gaps at terminals circuit breakers contactors etc with minimum impedance and through the largest possible surface area Shield busbars Cables Terminals Figure 6 2 Bridging shi...

Page 90: ...ing via the cable filter auxiliary voltages in the control cabinet 6 4 Potential concept A noise free connection between the internal and external supply voltage can be achieved by connecting the 0 V potentials to each other and grounding them This also eliminates the need for the control circuit insulation monitor required by DIN EN 60204 1 QWHUQDO ORDGV WHUQDO ORDGV 3 0 3 0 1 Figure 6 3 Potentia...

Page 91: ...l bonding strip 6 7 Connecting the protective grounding Connect the protective grounding to the cabinets and components in the system via the PE conductor Use the ground clamps for this or the special terminal provided for the auxiliary voltage Route the protective conductors in accordance with IEC 60204 1 DIN EN 60204 1 VDE 0113 Part 1 Safety of machinery Electrical equipment of machines Part 1 G...

Page 92: ...ing Connect the cable shields at both ends to the shield rails in the cabinets Always use shielded analog signal cables regardless of whether they are installed inside or outside cabinets In order to increase the effectiveness of the shielding ground spare conductors at both ends 6 8 1 Laying the cable shields In the case of analog signal lines carrying small signals mV or µA attach the cable shie...

Page 93: ...r cable and or its insulation can be damaged Cable temperatures exceeding 100 C can damage the connecting busbars This can result in damage in the converter Only use a power cable that has conductor or cable insulation that is rated for 85 C To protect the connecting busbars the temperature of the power cable must not exceed 100 C Detailed information about cabling of the converter is provided in ...

Page 94: ...les enter the cabinet in accordance with the degree of protection 6 11 2 Connecting the signal cables There are terminal strips and interfaces on the Power Stack Adapter in the electronics compartment of the power unit The signal traffic to the open loop and closed loop control cabinet is handled via these interchange points The terminal blocks are used to wire up the following Signals Auxiliary v...

Page 95: ...lso established over several cabinets Establish the ground connection for the whole plant immediately Each cabinet has a grounding lug for grounding the components installed in the cabinet It is located at the bottom of the cabinet Connect the cabinets securely to the plant grounding system via these grounding lugs Figure 6 6 Grounding lug 6 12 2 Connecting the auxiliary voltage Connect the auxili...

Page 96: ...em can be connected to each sensor module The sensor module is wired internally to the customer terminal strip For further information see the circuit manual To connect the encoder proceed as follows 1 The five safety rules must be observed 2 Route the cables from the encoder into the cabinet from below and to the customer terminal strips 3 Connect the signal line to the customer terminal strip Yo...

Page 97: ...nal devices For instance using an Emergency Stop pushbutton or isolated contacts from the excitation This is the reason that the contacts of the safety circuit are connected to terminals Precise data on these terminals is provided in the circuit diagram and terminal diagram WARNING Danger due to high voltages In spite of a safety shutdown function the drive may still be operational or high voltage...

Page 98: ...nnecting the re cooling unit to the drive Connect the cable provided for the cooling unit to the corresponding interfaces on the drive and the cooling unit Further details are contained in the circuit diagram of the drive and the re cooling unit 6 15 Fastening the cable ducts with cable ties Fasten all cable ducts whose cover faces downward with cable ties Wind the cable ties around the entire cab...

Page 99: ...re not experts in the field to the converter manufactured under contract will immediately invalidate permission to operate the system These include for example any actions contrary to recommendations provided in operation or maintenance manuals and other documentation This applies to the complete plant drive system drive train in which the converter is installed Until recertification it is not per...

Page 100: ...ciated plant and system components The electrical technician commissioning the equipment must be trained on the specific product as a result of the differences between the individual products e g regarding topology and closed loop control Obtain information about the range of SITRAIN training courses available through your local contact person Make use of the support and services offered by the re...

Page 101: ...service personnel immediately For additional information see the Service Support chapter Danger when operating with ground fault The type and location of the fault cannot be established just from a ground fault error message For example the glow discharge at the winding overhang of the machine may result in a fault signal In the event of continued operation serious follow on faults up to electric ...

Page 102: ... The parameters can be accessed via the following means PC with commissioning tool via PROFIBUS Operator panel Parameter types The following parameters are available Adjustable parameters write read Adjustable parameters directly influence the response of a function e g the ramp up and ramp down time of a ramp function generator Visualization parameters read only Display parameters are used to dis...

Page 103: ...tion Further data set types also exist however these can only be activated indirectly by means of a DDS changeover EDS Encoder data set MDS Motor data set 8 3 Setpoint channel and closed loop control 8 3 1 Setpoint addition Fine tuning correction variable often needs to be carried out on site for applications in which the command variables are generated by central control systems This can be carri...

Page 104: ...h speeds the bands are assigned a hysteresis Specify a minimum speed in order to block a specific range around the stopped state for stationary operation 8 3 4 Speed limitation Speed limitation can limit the maximum permissible speed of the entire drive train to protect the drive and load machine process against damage caused by excessive speeds 8 3 5 Ramp function generator The ramp function gene...

Page 105: ...anges to facilitate an improved control response Short settling times for load changes to facilitate an improved response to disturbances Acceleration and braking are possible with the maximum available torque Motor protection due to variable torque limitation in motor and regenerative mode Drive and braking torque controlled independently of the speed These benefits can even be achieved without s...

Page 106: ...t still exist at the output terminals and within the unit Make sure that the drive no longer rotates and that there are no high voltages present 8 4 2 Speed monitoring with incremental encoder Permanent speed monitoring enables motor control without an encoder If higher performance applications require permanent speed monitoring additional incremental encoders can be connected to options A51 A54 H...

Page 107: ...s isolated An insulation fault alone will not normally impair operation However in the event of such a fault the voltage of the other two phases increases with respect to ground In the medium term this rise in voltage can result in damage An additional error can cause a short circuit WARNING Danger when operating with ground fault The type and location of the fault cannot be established just from ...

Page 108: ...d faults and alarms can be found in the List Manual in the Faults and alarms section 8 5 2 Diagnostics 8 5 2 1 Diagnostics via LEDs LEDs of the open loop and closed loop control cabinet Table 8 1 Meaning of indicator lights Indicator light Action Meaning H21 White Continuous light The converter is in operation The circuit breakers are switched on and the converter pulses are enabled White Flashing...

Page 109: ...ed LED for Sirius safety relay LED Operation Device Out Line Sensor Start pushbutton Safety related output Green Green On Not confirmed Was confirmed Closed Green Off Was confirmed Open Green Off Not confirmed Open Fault Off Off Cross circuit or no power supply Open LEDs of the Power Stack Adapters Table 8 2 LEDs of the Power Stack Adapters LED Color Status Description cause Remedy PWR Off 24 V po...

Page 110: ...orange or Red orange Flashing light Component recognition via LED is activa ted The color depends on the LED state when component recognition is activated 8 5 2 2 Diagnostics via parameters Diagnostic parameters for the device status See the List Manual for a description of the individual parameters r0002 Drive status DO Display of drive status VECTORGL r0046 Missing enable signal DO Displays miss...

Page 111: ...taken into account It does not matter whether DI DO is set as an input or output p4028 r4022 Status of digital inputs on TM15 Module Displays the status of the digital inputs of Terminal Module 15 TM15 TM15 r4047 Status of digital outputs on TM15 Module Displays the status of the digital outputs of Terminal Module 15 TM15 TM15 It does not matter whether DI DO is set as an input or output p4028 r17...

Page 112: ...when the fault occurred All objects r0949 Fault value DO Displays additional information about the fault that occurred as integer number All objects r2122 Counter alarm buffer changes DO This counter is incremented every time the alarm buffer changes All objects r2123 Alarm time received in milliseconds DO Displays the system runtime in milliseconds when the alarm occurred All objects r2124 Alarm ...

Page 113: ...e converter from damage in the event of a fault faults and alarms A list of faults and alarms with remedies for their rectification can be found in the List Manual in the faults and alarms chapter Operation 8 5 Fault and system messages 3rd Party LCI Control Upgrade Operating Instructions 02 2022 A5E31872818 111 ...

Page 114: ...Operation 8 5 Fault and system messages 3rd Party LCI Control Upgrade 112 Operating Instructions 02 2022 A5E31872818 ...

Page 115: ...g pulse inhibit function Dangerous voltages of over 1000 V are present on the motor and drive converter High voltages can cause death or serious injury if the safety rules are not observed or if the equipment is handled incorrectly Isolate the electrical equipment from the line supply at the main switch when it breaks down or stops or when it needs to be serviced repaired or cleaned Do not carry o...

Page 116: ...al periods or when maintenance work is being carried out For this reason the heating is supplied with voltage from a separate line supply When the power supply voltage for the anti condensation heating is connected also for an EMERGENCY OFF or when the main switch is open a hazardous voltage is still present This voltage can cause serious injury Carefully comply with the 5 safety rules Risk of bur...

Page 117: ...jects that have been left behind Remove any foreign bodies Damage due to contamination and dirt Contamination and dirt can damage the device Visually inspect the equipment at least once per year For more information please refer to the section Visual inspections Dust deposits inside the cabinet unit must be removed at regular intervals or at least once a year by qualified personnel in line with th...

Page 118: ...ng instructions of the upgraded converter Disconnecting the demagnetization equipment from the low voltage supply For systems with demagnetizing equipment in addition to disconnecting the medium voltage you must also disconnect the demagnetization equipment from the low voltage supply DANGER Electric shock hazard To demagnetize for example the demagnetizing equipment generates a medium voltage fro...

Page 119: ...the operating instructions of the upgraded converter 9 4 1 Replacing a fan CAUTION Injury caused by rotating fan If the drive is equipped with a temperature controlled fan the fan can run on even if the power section is switched off You can be injured if you touch the fan Wait until the fan has shut down and has come to a stop 9 4 2 Replacing the back up battery of the AOP30 operator panel Table 9...

Page 120: ...ert a new battery 7 Close the cover of the battery compartment 8 Reconnect the 24 VDC power supply and communications line 9 Close the cabinet Note To ensure that no data is lost during a battery replacement it must be replaced within one minute If the time is exceeded the AOP settings and input screen texts are reloaded from the CompactFlash card by a restart of the AOP with a connection to the d...

Page 121: ...age due to moisture Fiber optic cables fiber optic cable bundles and electronic components can be damaged if cleaned using a damp rag If the components are very dusty remove the dust using a dry lint free cloth In so doing do not bend the fiber optic cables NOTICE Damage caused by aggressive cleaning agents Aggressive chemical agents can damage the electronics This can result in malfunction Never ...

Page 122: ... Use neither brass bronze or steel wire brushes nor cloths or steel wool interwoven with copper wire 9 5 3 Cleaning the cooling unit filter You can only clean the filter in front of the intake to the converter when the cooling unit has been switched off You can clean the filter at the output of the ion filter when the cooling unit is switched on Make sure that you close the valves to the ion excha...

Page 123: ...uential damage can occur if the device is recommissioned but the repair work carried out was not complete Check whether secondary faults have occurred on components which have failed Replace the components involved Measures in the event of an error It is not possible to fully test repairs that are carried out on site Return the defective module back to the manufacturing plant for repair The releva...

Page 124: ...nation modules and measuring resistors are at hazardous voltage levels Touching these components can result in death severe injury and significant material damage Never touch the AVT combination modules or measuring resistors under any circumstances WARNING Danger when making changes to the design of the voltage or ground fault detection Changes to the voltage or ground fault detection e g to the ...

Page 125: ...ock hazard The snubber circuit capacitors are not equipped with discharge resistors The energy stored in the capacitors is discharged via a circuit in the thyristor electronics This circuit is interrupted when the thyristor electronics are withdrawn Voltages of up to several 1000 V can occur and cause an electric shock This can result in death severe injuries and significant material damage In thi...

Page 126: ...h card from the Control Unit Back up the data saved on it 3 Copy the stored data of the previous CompactFlash card to the new original Siemens card Note Invalid software key The software key is associated with the serial number of the CompactFlash card If you overwrite the software key of the new CompactFlash card with the previous CompactFlash card the new CompactFlash card is not operational Con...

Page 127: ...iagram circuit diagram terminal diagram in the Power Unit Circuit Manual 9 6 5 Replacing the current transformer The current transformers measure the current in the input phases and output phases The current transformers are located on insulating cylinders The current transformers can be accessed only from the rear Figure 9 4 Current transformers and insulating cylinders Preparing for removal To p...

Page 128: ...ws 1 Dismount the post insulator Take out the screws next to the post insulator Fig A 2 Release screw Then remove the two screws Figure B 3 Take out the screws next to the post insulator Fig C The post insulator need not be removed 4 Swing the busbar on left hand side when viewed from rear upward and withdrawal the transformer to the left Maintenance 9 6 Repairs 3rd Party LCI Control Upgrade 126 O...

Page 129: ...e thyristor assembly In the event of a thyristor assembly failing establish which component has failed Thyristor by resistance measurement When a thyristor fault message is output the fault value indicates which thyristor is affected Check the thyristor resistance while it is installed Thyristor electronics by replacement Send the replaced thyristor electronic boards to the manufacturer for testin...

Page 130: ...eath severe injuries and significant material damage In this case you should treat the capacitors as if they were charged Discharge the snubber circuit capacitors Short circuit the snubber circuit capacitors before you withdraw the thyristor electronics Figure 9 7 Thyristor rack position 9 6 6 2 Replacing thyristor electronics DANGER Danger from non compliance with the 5 safety rules Non complianc...

Page 131: ...o be replaced proceed as follows Disconnecting the cables To disconnect the cables proceed as follows 1 If there are no core end markings label the two fiber optic cables and the connected cables 2 Remove all connecting leads 3 Detach the two fiber optic cables from the opto receiver and opto transmitter modules 4 Pull out the fiber optic cables Maintenance 9 6 Repairs 3rd Party LCI Control Upgrad...

Page 132: ...the thyristor electronics The thyristor electronics are clamped very tightly in the connectors The thyristor electronics can be damaged during removal Never remove the thyristor electronics from the electronics shielding enclosure remove them from the heat sink only 3 Push the new thyristor electronics with component side facing to the right completely into the thyristor module slot There must be ...

Page 133: ...e Enclose dehumidification material if the packaging is air tight Note the ESD in the Safety instructions section NOTICE Material damage due to inadequate packaging Components can be bent by careless packing or insufficient packaging This makes determining the exact cause of the error difficult When packing the thyristor electronics take care not to bend protruding parts Note Any information about...

Page 134: ...tools Plastic holders support the thyristors against the heat sinks The heat sinks are suspended on springs A cup spring assembly produces the necessary clamping force in the stack Removing a thyristor 1 Insert the open ended wrench into the groove of the guide bolt Open ended wrench Guide bolt Figure 9 9 Open ended wrench in groove 2 Keep the cup spring assembly under tension with the open ended ...

Page 135: ...ement data in the equipment installation log The first number on the thyristor label is the thyristor number 9 6 6 4 Disconnecting the fiber optic cables Tools required You require a fiber optic cable cutter Order No A5E02615209 to cut the fiber optic cables to length Procedure NOTICE Destruction of the fiber optic cables Fiber optic cables can be destroyed under the following conditions The bendi...

Page 136: ... 4 Tighten the knurled nut again by hand 9 6 7 Replacing surge arresters To replace the surge arrester proceed as follows 1 Release the screws 2 Remove the defective surge arrester 3 Insert the new surge arrester 4 Screw the surge arrester in place with the following torque 3EK7 40 Nm 3EJ2 70 Nm The surge arrester must not be subject to a transverse force greater than 370 N Maintenance 9 6 Repairs...

Page 137: ...usbar connections 4 Undo the water pipe connections 5 Slide the DC link reactor out of the cabinet Installing the DC link reactor To install the DC link reactor proceed as follows 1 Slide the DC link reactor onto the U rail as far as the stop 2 Screw the center upright back into the cabinet 3 Secure the DC link reactor on both sides with the lugs provided Maintenance 9 6 Repairs 3rd Party LCI Cont...

Page 138: ...ns proceed as follows 1 Clean and grease the contact surfaces immediately before screwing in the connections For this purpose use the cleansing agents and greases listed in the table below Medium Description Cleaning agent Ethyl alcohol and lint free cloth Grease Electrolube 2G or equivalent contact lubricant 2 Screw in the connections The tightening torque of the M12 screw connections supplied is...

Page 139: ... in your region here Page 141 Always indicate the part number and if known the order number of the spare part required You can find the order number as follows The device label is attached to or next to each component Find out which item code the required spare part has The parts list provided specify the part number and where appropriate the article number corresponding to the equipment identifie...

Page 140: ...Spare parts 3rd Party LCI Control Upgrade 138 Operating Instructions 02 2022 A5E31872818 ...

Page 141: ...mponents and old devices If you correctly dispose of the materials none of the materials pollutes the environment When disposing or reusing comply with the local laws and regulations WARNING Danger caused by improper removal In the event of improper removal material can slip tilt or fall down This can result in death serious injury or material damage Only specialist personnel may disassemble and d...

Page 142: ... PCBs Electronic components Disposal 11 2 Removing device components and old devices 3rd Party LCI Control Upgrade 140 Operating Instructions 02 2022 A5E31872818 ...

Page 143: ...Escalation GSP https intranet gspweb industry siemens com OTWG Login aspx tzo 120 validate 637674170558152892 Special investigation Technical Support LDA Portal https www lda portal siemens com siemlda de login LDA Portal Assist https assist siemens com Login login html Offers including spare parts E mail lda service de siemens com Contract customers Service Center servicecenter large drives appli...

Page 144: ...Service Support 3rd Party LCI Control Upgrade 142 Operating Instructions 02 2022 A5E31872818 ...

Page 145: ...4 11 only to the extent that it can be applied EU directives Machinery Directive 2006 42 EC amendments Electromagnetic compatibility 2014 30 EU amendments CE marking According to Low Voltage Direction only applies to the low voltage parts e g the control cabinet 2014 35 EU amendments Protection class Class 1 in accordance with DIN EN 61140 VDE 0140 Part 1 IEC 61140 Touch protection BGV A3 Insulati...

Page 146: ...ot permit ted Other climatic conditions ac cording to class 1K22 according to DIN EN 60721 3 1 IEC 60721 3 1 Icing not permissible 2K11 according to DIN EN 60721 3 2 IEC 60721 3 2 3K22 according to DIN EN 60721 3 3 A2 1997 IEC 60721 3 3 Ed2 2 2008 Pollution degree 2 without conductive pollu tion according to DIN EN 50178 VDE 0160 IEC 62103 2 without conductive pollu tion according to DIN EN 50178 ...

Page 147: ... Chemically active substances according to class 1C1 according to DIN EN 60721 3 1 IEC 60721 3 1 2C1 according to DIN EN 60721 3 2 IEC 60721 3 2 3C1 according to DIN EN 60721 3 3 A2 1997 IEC 60721 3 3 1994 no occurrence of salt mist Mechanically active substan ces according to class 1S11 according to DIN EN 60721 3 1 IEC 60721 3 1 2S1 according to DIN EN 60721 3 2 IEC 60721 3 2 3S6 according to DI...

Page 148: ...Technical specifications and drawings B 2 Environmental conditions 3rd Party LCI Control Upgrade 146 Operating Instructions 02 2022 A5E31872818 ...

Page 149: ... 18130 Commissioning checklist https www lda portal siemens com siemlda en 18131 More information about operating instructions for SINAMICS GL150 converters is provided here Supplementary component description https www lda portal siemens com siemlda en 109768128 Air cooled 6SL38503 A industrial converters https www lda portal siemens com siemlda en 109769828 Air cooled 6SL38503 P power generation...

Page 150: ...Literature and references to SINAMICS GL150 documentation 3rd Party LCI Control Upgrade 148 Operating Instructions 02 2022 A5E31872818 ...

Page 151: ...ectrostatic discharge ESD Guidelines 15 Connecting the signal lines 92 Converter bridge 32 Current conduction permanent signals 32 Current transformer 27 30 125 Torque 127 D DC link reactor 135 Deionized water requirements 29 Direction of rotation changeover 101 Door interlock 28 DRIVE CLiQ 26 E Electromagnetic fields 15 Elements in the door Indicator lights 36 Environmental conditions 144 F Fiber...

Page 152: ... additives 28 Ion exchanger 29 Monitoring the deionized water 28 Principle of operation 28 Raw water 30 Rounding times 103 S Safety concept 24 Safety information Failure of a thyristor assembly 127 Fiber optic cables 133 Setpoint addition 101 Shock and tilt indicators Location 67 Purpose 66 Short circuiting 31 Snubber circuit capacitor 124 Spare parts Contact person 137 Spares On Web 137 Speed lim...

Page 153: ......

Page 154: ...GERMANY Siemens AG Large Drives Applications Vogelweiherstraße 1 15 90441 NÜRNBERG www siemens com LDA Further Information ...

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