12-pulse applications
Contents
1. 1 Transformer 2 Overvoltage protection 3 Insulation monitoring 4 SINAMICS DCM master 5 SINAMICS DCM slave 6 DC motor 7 Line reactor 8 Parallel interface 9 Symmetry resistor Un Network supplying rated voltage to converter input la Direct current through SINAMICS DCM devices and motor Figure 4 4 Connection of additional SINAMICS DCM devices in 6 pulse operation 4 2 2 Prerequisites for the device Transformer 12 pulse operation is achieved in the network by an additional winding system electrically swiveled by 30 belonging to the supplying transformer Here at least one of the two converters master or slave of the 12 pulse system must be supplied via a galvanically isolated voltage isolation transformer see Figure 4 5 Converter transformer dimensioning at higher voltage level Page 20 and Figure 4 6 Converter transformer dimensioning at low voltage Page 21 NOTICE Both converters must be supplied with a clockwise rotation field In addition it is important to ensure that the three phase current system on the slave device lags behind that of the master device by 30 This phase allocation may need to be checked by taking a measurement Converter equipment SINAMICS DCM software version V1 2 or higher All SINAMICS DCMs must have the same software version 12 pulse applications C98130 A7066 A509 01 7619 1 2012 19 Symmetry resistor With a 12 pulse series connection2. Table 4 2 For 12 pulse series connection of SINAMICS DCM converters Parameter Master Slave or parallel devices p51799 Mode of operation 0 41 or 42 The same as on the master p51800 Position in the topology 41 Master 42 Slave 43 devices connected in parallel to the master 44 devices connected in parallel to the slave p51801 Amount of send data Application specific Application specific p51802 Number of powersections 2 2 p51803 n m mode 0 0 p51804 Send data Application specific Application specific p51805 Bus terminator 0o19 0 or 1 p51806 Station address Unique address Unique address p51807 Telegram failure time 0 1s 0 1s p50082 Field operating mode 0 0 no field p50076 Reduction in rated device DC current Application specific The same as on the master p50078 Rated value for supply voltage Application specific The same as on the master p50100 Rated motor current Rated motor current half The same as on the master the number of SINAMICS DCMs p50101 Armature voltage Total armature voltage The same as on the master rated value according to motor rate plate 1 1 on the two outermost devices at both physical ends of the bus cable 0 on all other devices 24 12 pulse applications C98130 A7066 A509 01 7619 1 2012 Table 4 3 For 12 pulse series connection of SINAMICS DCM converters with an uncontrolled rectifier
3. Parameter Master Slave or parallel devices p51798 Voltage on the uncontrolled rectifier Application specific The same as on the master p51799 Mode of operation 0 0 p51800 Position in the topology 45 master for diode 43 rectifier p51807 Telegram failure time 0 0s 0 1s 0 1 s if devices connected in parallel are available p51801 Amount of send data Application specific Application specific p51802 Number of powersections 1 1 p51803 n m mode 0 0 p51804 Send data Application specific Application specific p51805 Bus terminator Oor1 1 Oor1 1 p51806 Station address Unique address Unique address p51807 Telegram failure time 0 1s 0 1s p50082 Field operating mode 0 0 no field p50076L Reduction in rated device DC current Application specific The same as on the master p50078 Rated value for supply voltage Application specific The same as on the master p50100 Rated motor current Rated motor The same as on the master current number of SINAMICS DCMs p50165 Enable change of torque direction 00r12 The same as on the master 1 1 on the two outermost devices at both physical ends of the bus cable 0 on all other devices 2 Blockage of torque direction change is mandatory on 4Q devices 0 MO or MII 1 2 MOor MI 4 3 2 Carrying out commissioning Carry out commissioning on the master converter and on the slave converter as described in the SINAMICS DCM DC Converter operating instructions e When commissioning
4. a aaae eo cee eee nete s eere sede ats sea Feseu RARE 4 TOpOlogleS E n ninisueexc enu euius tip eben ut vai ode bear See 4 COnfIguratlon a sedere p o re RE n BER REIR dos HEN EUERU MERE IURE EQ ERR IR 6 Power increase with parallel connection ssssseseeeneeen nennen mener nenne enne nennen enne 7 Prerequisites for the deViCe 22 02 eee edito e p HERR HEEEGO a RARE P NC AI TD o i ere d eio iat 9 Dimensioning of the converter transformer sssssssssssseeene enne en nnne enne enne nen nennen 10 Dimensioning of the smoothing reactors sssssseeeenene nennen ener en nnne enne en nennen nennen 11 Selection for overvoltage protection ecrit rine ntn trae n ene ko dott eer nenn 12 Insulation monitoring He se et terere tee en ir Ed nhe aede re EAR een 12 C mmissi niNg LIE 13 Specifying the operating mode eran eti ed e ederent dete E er Pe e EL HRS ge EH ALPE aai eriari 13 Additional paramieter settings serieari ea a ae eee ea eec He eroe else e ER ee eee teten 14 Carrying o ut commissioning 2 521 62 creo EN ee 14 Optimization PUN es icit eee tr D te e eod peii dre Pit 15 12 pulse series cohnection i iiie iiiter en ctae ea ERERM cn d ERE S lehnen DE LARA RE HRS ERE FRa REGE NRI LAE R an 16 Deseo EE 16 12 pulse series connection of two SINAMICS DOWMS sese eene enne ennemi nennen ener 16 12 pulse series connection controlled converter uncontrol
5. r50072 1 is reached depending on which case occurs earlier A WARNING If the inductance of the smoothing reactor is too low at this current the thyristors may be destroyed The optimization run for the armature current closed loop control p50051 25 sets the following parameters on the master converter Parameter Master Slave or parallel devices p50110 Armature resistance Ra Actual armature resistance x half the number The same as on the master of SINAMICS DCMs p50111 Armature inductance Actual armature inductance x half the number The same as on the master La of SINAMICS DCMs p51591 La reduction factor The same as on the master p51596 Suction resistance Rs Actual suction resistance x half the number of The same as on the master SINAMICS DCMs p51594 Suction inductance Ls Actual suction inductance x half the number of The same as on the master SINAMICS DCMs p51595 Ls reduction factor The same as on the master p50155 Kp armature current The same as on the master controller p50156 Tn armature current The same as on the master controller In many cases the optimization run is missing the criteria for the correct distribution of the total inductance between the armature inductance and the suction inductance especially if the two inductances differ considerably This is why it is recommended that these parameters are always checked and if necessary set manual
6. symmetry resistors must be connected in parallel to the individual converters connected in series through which at least one current in the amount of the maximum thyristor reverse current flows This ensures that in the range of the small armature current or when armature current 0 the total armature voltage is distributed symmetrically to both individual devices As a result of the activation of the thyristors with long pulses an increased reverse current may flow The symmetry resistors must be dimensioned so that at maximum armature voltage a cross current of at least 100 mA flows With the parallel connection of a device the cross current at maximum voltage should be at least 200 mA and for two devices at least 300 mA Overvoltage protection Converter equipment which is connected to the network via a separate converter transformer must be protected against overvoltages that can occur as a result of line side switching operations by means of overvoltage protection If the converter input is protected by means of open contact gaps during primary side transformer switching operations no protective circuit is required at the converter input Insulation monitoring When using non grounded low voltage networks an insulation monitoring device must be used to monitor the insulation The insulation resistance is continuously monitored and if the value falls below an adjustable threshold value this is signaled Usage of external armature
7. D ALSTOM IRDH 275 IRDH375 with AGH 150W 4 BENDER Up to 1300 V IRDH 275 IRDH375 with AGH 2045 4 BENDER 12 pulse applications 12 C98130 A7066 A509 01 7619 1 2012 3 3 Commissioning In principle all converters should be commissioned as described in the Commissioning chapter of the SINAMICS DCM DC Converter operating instructions The settings in chapter Specifying the operating mode Page 13 and chapter Additional parameter settings Page 14 should be made before commissioning chapter Carrying out commissioning Page 14 To make the settings use e BOP20 operator panel e AOP30 operator panel Parameter list e STARTER commissioning tool Expert list 3 3 1 Specifying the operating mode Two operating modes are supported Operation with firing angle interface p51799 0 or p51799 21 e Master SINAMICS DCM 1 Closed loop speed control armature current closed loop control and field current closed loop control e Slave SINAMICS DCM 2 Armature current closed loop control The master determines the theoretical firing angle and transfers it to its own gating unit and to the gating unit of the slave Both partial converters synchronize to their own network and form their own firing points However both the master and the slave have their own current controller which intervenes to make any corrections Operation with current setpoint interface p51799 22 e Master SINAMICS DCM 1 Closed loop speed control armature curr
8. DCM devices in 6 pulse operation Page 7 or Figure 3 5 Parallel connection of additional SINAMICS DCM units in 12 pulse operation Page 8 12 pulse applications 6 C98130 A7066 A509 01 7619 1 2012 3 2 1 Power increase with parallel connection In order to increase power additional SINAMICS DCMs can be connected in parallel The options permitted for the parallel connection of SINAMICS DCM devices are described in the chapters Parallel connection of additional SINAMICS DCM devices in 6 pulse operation Page 7 and Parallel connection of additional SINAMICS DCM units in 12 pulse operation Page 8 3 2 1 1 Parallel connection of additional SINAMICS DCM devices in 6 pulse operation A maximum of 5 additional SINAMICS DCM devices M1P1 M1P2 and S1P1 S1P2 can be connected in parallel to the SINAMICS DCM devices of the 12 pulse unit master M1 and slave S1 in 6 pulse operation for details on the 6 pulse parallel connection see SINAMICS DCM operating instructions chapter Connecting devices in parallel and in series The following figure shows an example with one device connected in parallel 7 M1P1 Network 3 1 Transformer 2 Overvoltage protection i 3 Insulation monitoring 4 SINAMICS DCM 5 Smoothing reactor 6 DC motor 7 Line reactor 8 Data exchange 12 pulse parallel 9 Data exchange 6 pulse parallel connection connection Un Network supplying rated v
9. applications In order to make sense of this application document it is assumed that the reader has read the contents of the SINAMICS DCM operating instructions The following converter topologies are covered e 12 pulse parallel operation This mode of operation is especially used at higher power ratings to achieve lower line harmonics In addition by using this circuit a lower DC current ripple is obtained when compared to a 6 pulse connection e 12 pulse series operation This mode of operation is ideal when converting from older systems to digital control using a SINAMICS DC MASTER Control Module while keeping the existing power unit and consequently the nominal system data The following subjects are covered e Configuration of the required components e Commissioning e Switchover of the power unit topology option S50 Note Redundancy can not be achieved using the engineering and commissioning samples contained within this document 12 pulse applications C98130 A7066 A509 01 7619 1 2012 3 3 12 pulse parallel connection 3 1 Topologies Topology The following diagram shows the topology of a 12 pulse parallel connection SINAMICS SINAMICS DCM 1 DCM2 Master Slave Current setpoint p51800 21 an direction p51800 22 Parallel interface Figure 3 1 12 pulse parallel connection 1 block diagram 12 pulse applications 4 C98130 A7066 A509 01 7619 1 2012 The following diagram shows the top
10. be made between motor and generator load SICROWBAR 7VV3002 AC overvoltage protection for thyristors and diodes units are available as overvoltage protection for the connection between the three line phases Information on the calculation of energy to be shunted in the various situations and technical data for SICROWBAR 7VV3002 can be found in the SICROWBAR 7VV3002 operating instructions Internet link SICROWBAR overvoltage protection 7VV3002 operating instructions http support automation siemens com WW view en 17635427 133300 Dimensioning for 10 000 operating cycles is recommended 3 2 6 Insulation monitoring In ungrounded low voltage networks an insulation monitor is used to monitor the insulation resistance to ground This measures the current flowing across an established series resistor For this purpose a measuring voltage is injected into the network against the PE conductor If the value falls below an adjustable threshold value for the insulation resistance an alarm is output Since the network on the DC voltage side is galvanically connected via the parallel connection of the two partial converters only one insulation monitor can be used to monitor the network and DC voltage side for ground faults Table 3 1 Possible devices for insulation monitoring Rated network voltage Type Manufacturer Up to 690 V MR627 AREVA T amp D ALSTOM IRDH 275 IRDH375 BENDER Up to 1000 V MR627 with MZ611 AREVA T amp
11. master current number of SINAMICS DCMs p50357 Threshold for interrupted tachometer Application specific 10096 tachometer interruption monitoring not active 1 1 on the two outermost devices at both physical ends of the bus cable 0 on all other devices 3 3 3 Carrying out commissioning Carry out commissioning on the master converter and on the slave converter as described in the SINAMICS DCM DC Converter operating instructions e When commissioning with the BOP20 operator panel Perform commissioning steps e When commissioning with the AOP30 operator panel Execute Drive commissioning menu command e When commissioning with the STARTER commissioning tool Start the Configure drive unit wizard 14 12 pulse applications C98130 A7066 A509 01 7619 1 2012 3 3 4 Optimization runs The optimization runs should only be carried out on the master converter The slave converters must be connected and ready for operation at this point The optimization run for the armature current closed loop control p50051 25 may only be carried out if e the smoothing reactor is dimensioned correctly see chapter Dimensioning of the smoothing reactors Page 11 and e the parameter for the rated motor current p50100 is set correctly During this optimization run the firing angle is shifted in the Alpha G direction until either 9096 of the rated motor current is reached or until the rated device current
12. with the BOP20 operator panel Perform commissioning steps e When commissioning with the AOP30 operator panel Execute Drive commissioning menu command e When commissioning with the STARTER commissioning tool Start the Configure drive unit wizard 12 pulse applications C98130 A7066 A509 01 7619 1 2012 25 4 3 3 Optimization runs The optimization runs should only be carried out on the master converter The slave converters must be connected and ready for operation at this point The optimization run for the armature current closed loop control 050051 25 sets the following parameters on the master converter Table 4 4 For 12 pulse series connection of SINAMICS DCM converters Parameter Master Slave or parallel devices p50110 Armature resistance Ra Actual armature resistance x half the number The same as on the master of SINAMICS DCMs p50111 Armature inductance Actual armature inductance x half the number The same as on the master La of SINAMICS DCMs p51591 La reduction factor The same as on the master p50155 Kp armature current The same as on the master controller p50156 Tn armature current The same as on the master controller The parameter values from the above table must be transferred manually from the master converter to the slave converter Table 4 5 For 12 pulse series connection of SINAMICS DCM converters with an uncontrolled rectifier Parameter Mas
13. 096 4MS22 2 x 500 6RA8075 6DV62 2 x 300 6RA8088 6LS22 2x 500 6RA8096 4MV62 2 x 500 6RA8075 6FS22 2x 300 6RA8088 6LV62 2 x 500 6RA8097 4GS22 2x 300 6RA8075 6FV62 2 x 300 6RA8090 6GS22 2 x 300 6RA8097 4GV62 2 x 300 6RA8075 6GS22 2x 300 6RA8090 6GV62 2 x 300 6RA8097 4KS22 2x 500 6RA8075 6GV62 2 x 300 6RA8090 6KS22 2 x 500 6RA8097 4KV62 2 x 500 6RA8078 6DS22 2 x 300 6RA8090 6KV62 2 x 500 6RA8098 4DS22 2 x 300 6RA8078 6DV62 2 x 300 6RA8091 6DS22 2 x 300 6RA8098 4DV62 2 x 300 6RA8078 6FS22 2x 300 6RA8091 6DV62 2 x 300 6RA8000 0MV62 2 x 500 If higher input voltages are present SINAMICS DC MASTER Control Modules should be used in connection with suitable external power units in order to achieve the required proof voltage The corresponding systems are available on request 22 12 pulse applications C98130 A7066 A509 01 7619 1 2012 4 2 5 Selection for overvoltage protection The purpose of overvoltage protection is to protect the semiconductor valves of converters against overvoltages between the phases of a three phase network The overvoltage protection limit voltage may not exceed the blocking voltage of the valves to be protected Network P3 Overvoltage protection 1T Figure 4 7 Overvoltage protection The transformer is connected on the line side as shown in the above figure If the transformer is disconnected under load the magnetization energy across the arc of the
14. Monitoring functions The following properties or states are monitored and in the event of an error result in fault message F60044 e f power unit topology 2 is selected option S50 must be available the master function must be set on the same SINAMICS DCM as for power unit topology 1 no n m mode may be set i e p51803 must 0 e Thefeedback signal must except during a switchover of the topology always match the selection signal e The maximum duration of the topology switchover may not exceed the assigned time Note If fault message F60044 resulting from a change in the fault reaction see p02100 p02101 or in the message type see p02118 p02119 does not lead to the Fault operating state the SINAMICS DCM remains in operating state 01 8 in the event of a fault 12 pulse applications 28 C98130 A7066 A509 01 7619 1 2012 Trademarks All names identified by are registered trademarks of Siemens AG The remaining trademarks in this publication may be trademarks whose use by third parties for their own purposes could violate the rights of the owner Disclaimer of Liability We have reviewed the contents of this publication to ensure consistency with the hardware and software described Since variance cannot be precluded entirely we cannot guarantee full consistency However the information in this publication is reviewed regularly and any necessary corrections are included in subsequent editions Siemens AG Industr
15. SINAMICS DCM DC Converter Application 12 pulse applications Edition 01 1 2012 SIEMENS E SINAMICS drives SIEMENS SIEMENS SINAMICS DCM 12 pulse applications Compact User Manual Legal information Warning notice system This manual contains notices you have to observe in order to ensure your personal safety as well as to prevent damage to property The notices referring to your personal safety are highlighted in the manual by a safety alert symbol notices referring only to property damage have no safety alert symbol These notices shown below are graded according to the degree of danger indicates that death or severe personal injury will result if proper precautions are not taken A WARNING indicates that death or severe personal injury may result if proper precautions are not taken A CAUTION with a safety alert symbol indicates that minor personal injury can result if proper precautions are not taken CAUTION without a safety alert symbol indicates that property damage can result if proper precautions are not taken NOTICE indicates that an unintended result or situation can occur if the relevant information is not taken into account If more than one degree of danger is present the warning notice representing the highest degree of danger will be used A notice warning of injury to persons with a safety alert symbol may also include a warning relating
16. The transformers and smoothing reactors are dimensioned according to points Dimensioning of the converter transformer Page 10 and Dimensioning of the smoothing reactors Page 11 Advantages and disadvantages of this configuration e Advantage Lower current ripple e Disadvantage Each unit requires its own 12 pulse transformer 12 pulse applications 8 C98130 A7066 A509 01 7619 1 2012 3 2 2 Prerequisites for the device Transformer 12 pulse operation is achieved in the network by an additional winding system electrically swiveled by 30 belonging to the supplying transformer Here at least one of the two converters master or slave of the 12 pulse system must be supplied via a galvanically isolated voltage isolation transformer see Figure 3 6 Application with three winding converter transformer Page 10 and Figure 3 7 Application with isolation transformer Page 10 It is possible to select which of the two converters should be supplied by the voltage leading or lagging by approx 30 as required Converter equipment Signal connection via parallel interface The parallel interface cable between the converters should be as short as possible The permitted maximum cable length of 15 m should not be used if possible The total length of the bus cables for the parallel connector must not exceed 30 m e g maximum 2 x 15 m with a master device with 2 slave devices whereby the cables must always be as short as possible If seve
17. actors A WARNING The correct dimensioning of smoothing reactors is very important and should be made only by persons with sufficient knowledge of 12 pulse applications If the inductance of the smoothing reactors is too low instead of 60 long current blocks this may result in 30 long current blocks of twice the size in both partial converters In this case even if the semiconductor fuses are correctly dimensioned the thyristors may not be protected and will quickly be destroyed A smoothing reactor is used for each of the two partial converters The reactor is a 2 value reactor This means that the inductance of the reactor is defined for two current values The reactor is thermally dimensioned according to the rms value of the DC reactor current The following formulas are used for rough estimates of the reactor values Calculating the required inductance Lp Inductance of the reactor at 0 2 x lan Lp Inductance of the reactor at lamax Inductance for 50 Hz line frequency Inductance for 60 Hz line frequency Ug 3 Ug Lp 0296 10 35 2 fp 024 10 7 s 02 Li E 02 1s Ug 3 Us Lp 0296 10 5 fp 0 44 10 7 MUS 0 33 Ls D 0 33 Lus L Inductance in Henry lan Half rated DC current of the DC motor Iamax Half maximum current of the DC motor Udi Un x 1 35 Un Line supplying rated voltage Uai ideal DC voltage Condition 3 5 x Lp 2 LD1 If the condition is not
18. and bus bar systems are automatically taken into account The voltage applied to the motor terminals is measured External Voltage sensing is activated by setting p1854 1 p51855 is used to scale the analog value connected via terminals X177 29 30 Al2 Details can be found in function diagram 6902 of the SINAMICS DCM 12 pulse applications C98130 A7066 A509 01 7619 1 2012 9 3 2 3 Dimensioning of the converter transformer Application with three winding converter transformer Network 0 6 I 1 Transformer 2 Overvoltage protection 3 Insulation monitoring 4 SINAMICS DCM 5 Smoothing reactor 6 DC motor 8 Current setpoint input Un Network supplying rated voltage to converter input la Direct current of a partial converter total direct current Figure 3 6 Application with three winding converter transformer Transformer A separate three winding converter transformer is used to connect to the network of a higher voltage level Preferred vector groups for the transformer Dy5Dd0 YyOYd11 ux 4 to 6 Transformer type rating Sr UN x 1 35 x 1 05 x Id x 2 Application with isolation transformer 5 2l 7 Uw i m n gt Network e IE D 4 s n 9 OL 5 l Un 05 A DI 4 de 2 1 Transformer 2 Overvoltage protection 4 SINAMICS DCM 5 Smoothing reactor 6 DC motor 7 Line reactor 8 Current setpoint in
19. and these generate the selected power unit topology The corresponding BICO outputs on the parallel switching slaves must not be used The contactors can only be switched in a de energized state During power up of the SINAMICS DCM both power unit topologies are switched off After this the two power unit topologies are mutually locked inside the device so that only one power unit topology can be switched on For safety reasons the contactors must also be mutually locked via auxiliary contacts as shown in function block diagram 9360 Feedback from the active power unit topology The active power unit topology is queried on the parallel switching master using a BICO input see p51791 The corresponding BICO input on the parallel switching slave has no effect 12 pulse applications C98130 A7066 A509 01 7619 1 2012 27 Switchover The switchover of power unit topology is permitted in every operating state In the event of a switchover to the Operation state current reduction controller disable and firing pulse inhibit are carried out and then the hardware is switched via the contactors With the feedback from the active power unit topology the firing pulses and the controller are released again During the controller disable and firing pulse inhibit the SINAMICS DCM is in operating state 01 8 The duration of the current free pause during the switchover is influenced primarily by the duration of the hardware switchover by the contacto
20. ce a 396 difference can be reached at a reasonable cost The additional voltage drop in the line reactors must be taken into account during the configuration If converters are used which do not have any arm fuses and 4Q operation is possible at the same time every converter is to be supplied with a fuse on the DC side which has been dimensioned according to its output current 12 pulse applications C98130 A7066 A509 01 7619 1 2012 21 4 2 4 Voltage limits The output voltage of a 12 pulse series system is set by the insulation strength and the semiconductor reverse voltages of the individual devices Devices with 690 830 and 950 Vac have the same control module i e the insulation against ground is set to 950 Vac in all three devices However this voltage cannot be fully utilized because series connection can cause a much higher voltage against ground in the system in the event of a ground fault In addition the faulty functioning of the symmetry resistors or of one of the converters can for example result in an impermissible increase in the thyristor reverse voltages For this reason the maximum input voltage depending on the device types according to the following table must not be exceeded by any device MLFB Max input voltage MLFB Max input voltage MLFB Max input voltage device type Vrms device type Vrms
21. device type Vrms 6RA8013 6DV62 2 x 300 6RA8078 6FV62 2x 300 6RA8091 6FS22 2 x 300 6RA8013 6FV62 2 x 300 6RA8081 6DS22 2 x 300 6RA8091 6FV62 2 x 300 6RA8018 6DV62 2 x 300 6RA8081 6DV62 2 x 300 6RA8093 4DS22 2 x 300 6RA8018 6FV62 2 x 300 6RA8081 6GS22 2 x 300 6RA8093 4DV62 2 x 300 6RA8025 6DS22 2 x 300 6RA8081 6GV62 2 x 300 6RA8093 4GS22 2 x 300 6RA8025 6DV62 2 x 300 6RA8082 6FS22 2 x 300 6RA8093 4GV62 2 x 300 6RA8025 6FS22 2 x 300 6RA8082 6FV62 2 x 300 6RA8093 4KS22 2 x 500 6RA8025 6FV62 2 x 300 6RA8085 6DS22 2 x 300 6RA8093 4KV62 2 x 500 6RA8025 6GS22 2 x 300 6RA8085 6DV62 2 x 300 6RA8093 4LS22 2x 500 6RA8025 6GV62 2 x 300 6RA8085 6FS22 2 x 300 6RA8093 4LV62 2 x 500 6RA8028 6DS22 2 x 300 6RA8085 6FV62 2 x 300 6RA8095 4DS22 2 x 300 6RA8028 6DV62 2 x 300 6RA8085 6GS22 2 x 300 6RA8095 4DV62 2 x 300 6RA8028 6FS22 2 x 300 6RA8085 6GV62 2 x 300 6RA8095 4GS22 2 x 300 6RA8028 6FV62 2 x 300 6RA8086 6KS22 2 x 345 6RA8095 4GV62 2 x 300 6RA8031 6DS22 2 x 300 6RA8086 6KV62 2 x 345 6RA8095 4KS22 2x 500 6RA8031 6DV62 2 x 300 6RA8087 6DS22 2 x 300 6RA8095 4KV62 2 x 500 6RA8031 6FS22 2x 300 6RA8087 6DV62 2 x 300 6RA8095 4LS22 2x 500 6RA8031 6FV62 2 x 300 6RA8087 6FS22 2 x 300 6RA8095 4LV62 2 x 500 6RA8031 6GS22 2 x 300 6RA8087 6FV62 2 x 300 6RA8096 4GS22 2x 300 6RA8031 6GV62 2 x 300 6RA8087 6GS22 2 x 300 6RA8096 4GV62 2 x 300 6RA8075 6DS22 2 x 300 6RA8087 6GV62 2 x 300 6RA8
22. ed to provide support in the implementation of typical applications The operator is responsible for the correct operation of the products described Should you require further information or encounter specific problems which have not been handled in enough detail please contact your local Siemens office The contents of this application document are not part of an earlier or existing contract agreement or legal relationship nor do they change such contracts agreements or legal relationships The contract of sale in each case outlines all the obligations of the DT Drive Technologies Division of Siemens AG The warranty conditions specified in the contract between the parties are the only warranty conditions accepted by the DT Drive Technologies Division Any statements contained herein neither create new warranties nor modify the existing warranty Ah w RNiNG The units listed here contain dangerous electric voltages dangerous rotating machine parts fans and control rotating mechanical parts drives Failure to follow the relevant Operating Instructions may result in death serious injury or extensive material damage Technical Support You can also find help for technical issues through our Technical Support www siemens de automation support request German www siemens com automation support request English 2 Area of application This application document provides support for SINAMICS DCM converters in 12 pulse
23. ent closed loop control and field current closed loop control e Slave SINAMICS DCM 2 Armature current closed loop control The master determines the armature current setpoint and transfers this to its own armature current controller and to the armature current controller of the slave Both partial converters control their own partial current independently 12 pulse applications C98130 A7066 A509 01 7619 1 2012 13 3 3 2 Additional parameter settings Table 3 2 Parameter settings on the master converter and on the slave converter Parameter Master Slave or parallel devices p51799 Mode of operation 0 21 or 22 The same as on the master p51800 Position in the topology 21 12 pulse master 22 12 pulse slave 23 devices connected in parallel to the master 24 devices connected in parallel to the slave p51801 Amount of send data Application specific Application specific p51802 Number of powersections 22 2 p51803 n m mode 0 0 p51804 Send data Application specific Application specific p51805 Bus terminator 0 or 1 Oor 1 p51806 Station address Unique address Unique address p51807 Telegram failure time 0 1s 0 1s p50082 Field operating mode 0 0 no field p50076 Reduction in rated device DC current Application specific The same as on the master p50078 Rated value for supply voltage Application specific The same as on the master p50100 Rated motor current Rated motor The same as on the
24. fulfilled Lp must be increased accordingly The condition is satisfied when lamax lt 2 x Idn 12 pulse applications C98130 A7066 A509 01 7619 1 2012 11 3 2 5 Selection for overvoltage protection The purpose of overvoltage protection is to protect the semiconductor valves of converters against overvoltages between the phases of a three phase network The overvoltage protection limit voltage may not exceed the blocking voltage of the valves to be protected Network CY 4 T 1 Overvoltage protection Figure 3 8 Overvoltage protection The transformer is connected on the line side as shown in the above figure If the transformer is disconnected under load the magnetization energy across the arc of the primary side switch is not completely released In the event of blocked firing pulses this energy results in an overvoltage on the secondary side of the transformer and must be limited by the overvoltage protection When switching to no load operation the overvoltage protection must only handle the magnetizing energy of the transformer The magnetization energy is calculated as follows SW i Wm Transformer magnetization energy Wy F a f ie Sn Transformer rated power lo Transformer no load current IN Transformer rated current f Line frequency in Hz If the transformer is disconnected in the event of a fault the shunted energy is greater in relation to the load whereby a distinction must still
25. led converter 18 Configuration cet a hee TER x ea re E E a tee n e er ee iet 19 Power increase with parallel connection sesseseeeeeenenn enm eene en nemen enne nennen 19 Prerequisites tor the device 35 optat m reU RERO FERE RE HI E eder em C ABE a ESERE 19 Dimensioning of the converter transformer ssssssssesseeene enm ennemi ennemi nennen 20 Voltage limitS 3 E ED 22 Selection for overvoltage protection essen enne nnne nenne nennen nennen nenne enne nnns 23 Insulation monitoring 5 1 nes er tha e de ER EX RE ede ee E d aee erlernen nennen 23 COMMISSIONING xii iiie rtt ted e cio rede qe te gre eara trece tape i ai elites 24 Additional parameter settings mere D e ERR Re D e gr P dandesasceucendscghseoaneas es 24 Carrying out commissioning 2 euo n nee nenn ern er dne E near 25 Optimization TUPDS 4i doe eee iiid it ertet PE o ge vd exc reae patel ele a url ex eee RR a Rp DE tees 26 Switchover of the power unit topology option S50 sesssssssessssseseseeeeenee nennen nennen nnne nnne enne 27 12 pulse applications C98130 A7066 A509 01 7619 1 2012 1 Instructions Note This application document does not claim to contain all details and versions of units or to take into account all conceivable operational cases and applications The standard applications do not represent specific customer solutions but are only intend
26. ly to the correct values Following this the parameter settings from the above table must be transferred manually from the master converter to the slave converter 12 pulse applications C98130 A7066 A509 01 7619 1 2012 15 4 12 pulse series connection 4 1 Topologies 4 1 1 12 pulse series connection of two SINAMICS DCMs Topology The following diagram shows the topology of a 12 pulse series connection of two SINAMICS DCM SINAMICS SINAMICS DCM 1 DCM 2 Master Slave Firing point firing angle p51800 41 Va p51800 42 BICOs D C Parallel interface D C Figure 4 1 12 pulse series connection 1 block diagram The following diagram shows the topology of a 12 pulse series connection where an additional converter is connected in parallel to each of the two 12 pulse converters connected in series SINAMICS SINAMICS SINAMICS SINAMICS DCM 3 DCM 1 DCM2 DCM 4 Slave Master Slave Slave p51800 43 p51800 41 p51800 42 p51800 44 Firing point firing angle Va BICOs Parallel interface Figure 4 2 12 pulse series connection 2 block diagram 12 pulse applications 16 C98130 A7066 A509 01 7619 1 2012 Operating modes There are 2 operating modes Operation with the same firing pulses p51799 41 Both partial converters are fired at precisely the same instant The master calculates the firing point and this is transferred to the slave via the parallel interface Synchronization to the line supply is e
27. ology of a 12 pulse parallel connection where an additional 6 pulse converter is connected in parallel to each of the two 12 pulse converters connected in parallel U1 A ES A U2 v2 W2 SINAMICS SINAMICS SINAMICS SINAMICS DCM 3 DCM 1 DCM 2 DCM 4 Slave Master Slave Slave p51800 23 p51800 21 p51800 22 p51800 24 Current setpoint Torque direction BICOs C D Parallel interface Figure 3 2 12 pulse parallel connection 2 block diagram Note If additional converters are connected in parallel to the master converter then exactly the same number of converters must also be connected in parallel with the slave converter 12 pulse applications C98130 A7066 A509 01 7619 1 2012 3 2 Configuration Not permitted Operation of several 12 pulse systems on a common 12 pulse transformer The operation of several 12 pulse systems on a common 12 pulse transformer see figure below is not permitted This can cause balance currents which can result in a blown fuse or even damage e g thyristor damage See the FAQ for 6RA70 SIMOREG DC MASTER and SIMOREG DC MASTER Control Module More than one 12 pulse system on a transformer http support automation siemens com WW view en 2604 1969 Network Figure 3 3 Non permissible parallel connection You can however connect devices in parallel according to Figure 3 4 Parallel connection of additional SINAMICS
28. oltage to converter input la Direct current of a partial converter 75 total direct current Figure 3 4 Parallel connection of additional SINAMICS DCM devices in 6 pulse operation Advantages and disadvantages of this configuration e Advantage Only one 12 pulse transformer is required e Disadvantage Smoothing reactors are required to avoid a higher current ripple 12 pulse applications C98130 A7066 A509 01 7619 1 2012 3 2 1 2 Parallel connection of additional SINAMICS DCM units in 12 pulse operation The 12 pulse unit master M1 and slave S1 can be connected in parallel to a maximum of 2 additional 12 pulse units M2 S2 and M3 S3 in 12 pulse operation on the DC side whereby the units connected in parallel adhere to the setpoints of the first master You must ensure that each unit is supplied by a separate transformer If this is not the case uncontrolled balance currents can occur The following figure shows an example with a 12 pulse unit connected in parallel Netz Network Netz Network 1 Transformer 2 Overvoltage protection 3 Insulation monitoring 4 SINAMICS DCM 5 Smoothing reactor 6 DC motor 7 Current setpoint input 8 Data exchange 12 pulse parallel for example via peer to peer connection Un Network supplying rated voltage to converter input la Direct current of a partial converter 74 total direct current Figure 3 5 Parallel connection of additional SINAMICS DCM units in 12 pulse operation
29. over of the power unit topology e All SINAMICS DCMs involved must be equipped with option S50 e No n m mode may be used e The function of the parallel switching master must remain on the same SINAMICS DCM in both power unit topologies e SINAMICS DCM software version V1 3 or higher All SINAMICS DCMs must have the same software version Parameter assignment The following parameters must be set separately for the two power unit topologies Power unit topology 1 p51799 Mode of operation of the armature converter p51800 Position of the power unit in the topology p51802 Number of active power units Power unit topology 2 p51794 Mode of operation of the armature converter p51795 Position of the power unit in the topology p51802 Number of active power units Selection of the required power unit topology and function The required power unit topology can be selected on the parallel switching master with a BICO input see p51790 and is passed on internally to the parallel switching slaves The p51790 setting on the parallel switching slaves has no effect If the required power unit topology does not match the currently active topology a switchover is triggered Switchovers that have been started are carried out in full and only then is a further switchover possible Control of the contactors for the power unit topology The contactors are controlled via two BICO outputs see r53312 0 and r53312 1 on the parallel switching master
30. primary side switch is not completely released In the event of blocked firing pulses this energy results in an overvoltage on the secondary side of the transformer and must be limited by the overvoltage protection When switching to no load operation the overvoltage protection must only handle the magnetizing energy of the transformer The magnetization energy is calculated as follows SW i Wm Transformer magnetization energy a 4 n f iy Sn Transformer rated power lo Transformer no load current IN Transformer rated current f Line frequency in Hz If the transformer is disconnected in the event of a fault the shunted energy is greater in relation to the load whereby a distinction must still be made between motor and generator load SICROWBAR 7VV3002 AC overvoltage protection for thyristors and diodes units are available as overvoltage protection for the connection between the three line phases Information on the calculation of energy to be shunted in various operations and technical data for SICROWBAR 7VV3002 can be found in the SICROWBAR 7VV3002 operating instructions Internet link SICROWBAR overvoltage protection 7VV3002 operating instructions http support automation siemens com WW view en 17635427 133300 Dimensioning for 10 000 operating cycles is recommended 4 2 6 Insulation monitoring In ungrounded low voltage networks an insulation monitor is used to monitor the insulation resistance to ground This measu
31. put Un Network supplying rated voltage to converter input la Direct current of a partial converter 75 total direct current Figure 3 7 Application with isolation transformer Transformer When there is a low voltage rail an isolation transformer with a voltage transformation ratio of 1 1 is used upstream of a converter for a 30 phase offset Suitable vector groups for the transformer Dy11 Yd11 Dy5 ux 4 to 6 Transformer type rating St UN x 1 35 x 1 05 x Id 12 pulse applications 10 C98130 A7066 A509 01 7619 1 2012 NOTICE If converter equipment is connected in parallel in order to increase the current parallel connection of additional max 5 devices per 6 pulse branch is supported a line reactor must be connected upstream of each converter unit with min 2 up in order to decouple the converter equipment In order to ensure symmetrical current distribution in the parallel converter units the lowest possible deviation of the impedance values of the individual line reactors is required In practice a 3 difference can be achieved at a reasonable cost The additional voltage drop in the line reactors must be taken into account during the configuration If converters are used which do not have any arm fuses and 4Q operation is possible at the same time every converter is to be supplied with a fuse on the DC side which has been dimensioned according to its output current 3 2 4 Dimensioning of the smoothing re
32. ral devices are connected in parallel the master device must be arranged in the center of the bus connection the slave devices on either side are distributed as evenly as possible Equipotential bonding must be provided and the shield must be connected to ground with a large contact surface on either side All SINAMICS DCMs must have the same software version Smoothing reactor Since the instantaneous values of device output voltages differ due to the different phase angle of the line infeed decoupling via smoothing reactors must be provided upstream of the parallel device connection on the DC voltage side Overvoltage protection Converter equipment which is connected to the line supply via a separate converter transformer must be protected against overvoltages that can occur as a result of line side switching operations by means of overvoltage protection If the converter input is protected by means of open contact gaps during primary side transformer switching operations no protective circuit is required at the converter input Insulation monitoring When using non grounded low voltage networks an insulation monitoring device must be used to monitor the insulation The insulation resistance is continuously monitored and if the value falls below an adjustable threshold value this is signaled Note It is advisable to measure the armature voltage close to the motor terminals Voltage drops influenced by smoothing reactors cabling
33. reduction of the ripple gt operation with following control p51799 42 Note The power unit of the slave converter must be connected to the 12 pulse transformer so that its phases lag the phases of the line supply at the master by 30 The phase sequence must be the same 12 pulse applications C98130 A7066 A509 01 7619 1 2012 17 4 1 2 12 pulse series connection controlled converter uncontrolled converter Topology The following diagram shows the topology of a 12 pulse series connection of a SINAMICS DCM 2 quadrant unit and a diode rectifier thyristor bridge B6 diode rectifier Remark The incoming AC voltage of the controlled converter should be 10 to 15 higher than that at the controlled converter in order that the current can be reliably reduced down to 0 SINAMICS DCM 1 rectifier Master p51800 45 D C D Figure 4 3 12 pulse series connection Controlled uncontrolled rectifier block diagram 12 pulse applications 18 C98130 A7066 A509 01 7619 1 2012 4 2 Configuration 4 2 1 Power increase with parallel connection Additional devices can be connected in parallel to the SINAMICS DCM 12 pulse series master device and the 12 pulse series slave device to increase the output current The maximum possible configuration is 2 groups in series each consisting of 3 devices connected in parallel Suggested circuit Network
34. res the current flowing across an established series resistor For this purpose a measuring voltage is injected into the network against the PE conductor If the value falls below an adjustable threshold value for the insulation resistance an alarm is output Since the network on the DC voltage side is galvanically connected via the parallel connection of the two partial converters only one insulation monitor can be used to monitor the network and DC voltage side for ground faults Table 4 1 Possible devices for insulation monitoring Rated network voltage Type Manufacturer Up to 690 V MR627 AREVA T amp D ALSTOM IRDH 275 IRDH375 BENDER Up to 1000 V MR627 with MZ611 AREVA T amp D ALSTOM IRDH 275 IRDH375 with AGH 150W 4 BENDER Up to 1300 V IRDH 275 IRDH375 with AGH 2048 4 BENDER 12 pulse applications C98130 A7066 A509 01 7619 1 2012 23 4 3 Commissioning In principle all converters should be commissioned as described in the Commissioning chapter of the SINAMICS DCM DC Converter operating instructions The settings in chapter Additional parameter settings Page 24 should be made before commissioning chapter Carrying out commissioning Page 25 To make the settings use e BOP20 operator panel e AOP30 operator panel Parameter list e STARTER commissioning tool Expert list 4 3 1 Additional parameter settings Parameter settings on the master converter and on the slave converter
35. rs Two times can be set p51792 Stabilization time for the feedback from the current power unit topology A change to the feedback signal is only effective if the signal features the new state continuously for longer than the stabilization time During this time the previous state remains effective p51793 Maximum duration of switchover Once this time has elapsed the feedback from the active power unit topology must match the one requested Controller optimization The two power unit topologies generally require certain parameters e g p50100 rated motor current p50110 armature circuit resistance p50111 armature circuit inductance controller gains etc to be set in accordance with the topology To do this the drive data sets DDS must be used The BICO output for controlling the contactors r53312 0 must be used as the DDS selection signal p50820 The optimization runs or the manual optimization for both power unit topologies must then be carried out separately and the determined values entered in index 0 or index 1 of the appropriate controller parameters Recommended procedure 1 Carry out the optimization of power unit topology 1 in DDS O in full 2 Copy DDS 0 to DDS 1 see p0819 3 Carry out the optimization of power unit topology 2 in DDS 1 Note A change to the selection of power unit topology during an optimization run leads to the cancelation of the optimization run with fault message F60052
36. ter Slave or parallel devices p50110 Armature resistance Ra Actual armature resistance x number of The same as on the master SINAMICS DCM p50111 Armature inductance Actual armature inductance x number of The same as on the master La SINAMICS DCMs p51591 La reduction factor The same as on the master p50155 Kp armature current The same as on the master controller p50156 Tn armature current The same as on the master controller The parameter values from the above table must be transferred manually from the master converter to the slave converter 26 12 pulse applications C98130 A7066 A509 01 7619 1 2012 5 Switchover of the power unit topology option S50 Note The SINAMICS DCM can only be equipped or retrofitted with option S50 in the factory In certain applications it is necessary to switch between two different power unit topologies such as between 12 pulse parallel connection and 12 pulse series connection during operation by means of a command SINAMICS DCM converters with option S50 provide the control for this purpose The actual switch between power unit topologies is performed with external contactors The detailed functionality and a recommended interconnection are provided in function block diagram 9360 in the SINAMICS DCM List Manual For further inquires and information on this subject contact your local sales representative or SIEMENS customer support Prerequisites for the switch
37. ting St UN x 1 35 x 1 05 x Id x 2 12 pulse applications 20 C98130 A7066 A509 01 7619 1 2012 Application with isolation transformer U d N gt E D Master 4 00H Uy EE 9 2 7 Network i 1 a y S a 4 Slave 5 A l 1 Transformer 2 Overvoltage protection 4 SINAMICS DCM master 5 SINAMICS DCM slave 6 DC motor 7 Line reactor 8 Parallel interface 9 Symmetry resistor Un Network supplying rated voltage to converter input la Direct current through both SINAMICS DCM devices and motor Figure 4 6 Converter transformer dimensioning at low voltage Transformer When there is a low voltage rail an isolation transformer with a voltage transformation ratio of 1 1 is used upstream of the slave converter for a 30 phase offset Suitable vector groups for the transformer Dy11 Yd11 uk 4 to 6 Transformer type rating St UN x 1 35 x 1 05 x Id NOTICE If converter equipment is connected in parallel in order to increase the current parallel connection of additional max 2 devices per 6 pulse branch is possible a line reactor must be connected upstream of each converter unit with min 2 up in order to decouple the converter equipment In order to ensure symmetrical current distribution in the parallel converter units the lowest possible deviation of the impedance values of the individual line reactors is required In practi
38. to property damage Qualified Personnel The product system described in this documentation may be operated only by personnel qualified for the specific task in accordance with the relevant documentation in particular its warning notices and safety instructions Qualified personnel 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 A 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 these must be recommended or approved by Siemens Proper transport storage installation assembly commissioning operation and maintenance are required to ensure that the products operate safely and without any problems The permissible ambient conditions must be complied with The information in the relevant documentation must be observed Siemens All rights reserved 2012 C98130 A7066 A509 01 7619 1 2012 1 Table of Contents 1 2 3 3 1 3 2 3 2 1 3 2 2 3 2 3 3 2 4 3 2 5 3 2 6 3 3 3 3 1 3 3 2 3 3 3 3 3 4 ISUHUCTOMNS E E 3 Arsa of AppliCation PERI E 3 12 pulse parallel Connection
39. voltage measurement If the armature voltage is to be measured externally connected via X177 29 30 Al2 and activated by setting p1854 1 please note the following Upon activation of serial connection mode the SINAMICS DCM Master automatically adds the measured armature voltage of the SINAMICS DOM serial slave to the voltage value If a diode bridge is used as serial slave the voltage value beeing added can be influenced by p51798 Currently it is not possible to disable this feature 4 2 3 Dimensioning of the converter transformer Application with three winding converter transformer lt Master 4 1 gt 9 Network 8 Oo 6 h 4 9 D Slave 5 ls 1 Transformer 2 Overvoltage protection 3 Insulation monitoring 4 SINAMICS DCM master 5 SINAMICS DCM slave 6 DC motor 8 Parallel interface 9 Symmetry resistor Un Network supplying rated voltage to converter input la Direct current through both SINAMICS DCM devices and motor Figure 4 5 Converter transformer dimensioning at higher voltage level Transformer A separate three winding converter transformer is used to connect to the network of a higher voltage level Preferred vector groups for the transformer DdODy11 Dd6Dy5 YyOYd11 Yy6Yd5 uk 496 to 6 It is important to ensure that the three phase current system on the slave device lags behind that of the master device by 30 Transformer type ra
40. xclusively performed by the master The slave must be connected to the line supply with the same phase sequence as the master Operation with sequence control p51799 42 Both partial converters synchronize to the line supply and generate their own firing points The firing angle for the master and the firing angle for the slave are calculated by the master and the firing angle and the torque direction for the slave are transferred to the slave via the parallel interface The firing angle for the master and slave are generated so that the reactive power load of the line supply is as low as possible This is the case if one of the two partial converters is ata control limit and the other carries out the closed loop control This type of closed loop control is only possible for continuous current Operation with the same firing points is automatically selected in the discontinuous pulsating current range Remark If the two partial converters operate in the following mode the current ripple is significantly higher than operation with the same firing angle In this case the current ripple approximately corresponds to that for 6 pulse operation Especially in older motors under certain circumstances this ripple can cause problems for example during commutation Therefore a conscious decision must be made low ripple but no reduction of the reactive power gt operation with the same firing pulses p51799 41 low reactive power but no
41. y Sector Postfach 48 48 90026 NURNBERG 12 pulse applications C98130 A7066 A509 01 7619 1 2012 Siemens AG Subject to change Industry Sector C98130 A7066 A509 01 7619 P O Box 48 48 Siemens AG 2012 90026 NUREMBERG GERMANY www siemens com automation
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