Motor Modules as braking chopper SINAMICS S120 DCC. Unrestricted. Siemens Industry Online Support

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1 Motor Modules as braking chopper SINAMICS S120 DCC Siemens Industry Online Support Unrestricted

2 Warranty and liability Warranty and liability Note Security information The Application Examples are not binding and do not claim to be complete regarding the circuits shown, equipping and any eventuality. The Application Examples do not represent customer-specific solutions. They are only intended to provide support for typical applications. You are responsible for ensuring that the described products are used correctly. These Application Examples do not relieve you of the responsibility to use safe practices in application, installation, operation and maintenance. When using these Application Examples, you recognize that we cannot be made liable for any damage/claims beyond the liability clause described. We reserve the right to make changes to these Application Examples at any time without prior notice. If there are any deviations between the recommendations provided in these Application Examples and other Siemens publications e.g. Catalogs the contents of the other documents have priority. We do not accept any liability for the information contained in this document. Any claims against us based on whatever legal reason resulting from the use of the examples, information, programs, engineering and performance data etc., described in this Application Example shall be excluded. Such an exclusion shall not apply in the case of mandatory liability, e.g. under the German Product Liability Act ( Produkthaftungsgesetz ), in case of intent, gross negligence, or injury of life, body or health, guarantee for the quality of a product, fraudulent concealment of a deficiency or breach of a condition which goes to the root of the contract ( wesentliche Vertragspflichten ). The damages for a breach of a substantial contractual obligation are, however, limited to the foreseeable damage, typical for the type of contract, except in the event of intent or gross negligence or injury to life, body or health. The above provisions do not imply a change of the burden of proof to your detriment. Any form of duplication or distribution of these Application Examples or excerpts hereof is prohibited without the expressed consent of the Siemens AG. Siemens provides products and solutions with industrial security functions that support the secure operation of plants, systems, 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 only form one element of such a concept. Customer is responsible to prevent unauthorized access to its plants, systems, machines and networks. Systems, machines and components should only be connected to the enterprise network or the internet if and to the extent necessary and with appropriate security measures (e.g. use of firewalls and network segmentation) in place. Additionally, Siemens guidance on appropriate security measures should be taken into account. For more information about industrial security, please visit Siemens products and solutions undergo continuous development to make them more secure. Siemens strongly recommends to apply product updates as soon as available and to always use the latest product versions. Use of product versions that are no longer supported, and failure to apply latest updates may increase customer s exposure to cyber threats. To stay informed about product updates, subscribe to the Siemens Industrial Security RSS Feed under Entry ID: , V1.1, 08/2017 2

3 Table of contents Table of contents Warranty and liability Introduction Overview Principle of operation Overview of the overall solution Description of the core functionality Components used Engineering Design Selecting the Motor Modules Chopper activation threshold Dimensioning the braking resistor Dimensioning example Commissioning the application Program description Function description Parameter description Commissioning Hardware Software Commissioning script Optimization Controlling the chopper Parameter description Appendix Service and Support Contact person Links and Literature Change documentation Entry ID: , V1.1, 08/2017 3

4 1 Introduction 1 Introduction 1.1 Overview Introduction The standard application is intended for all users, and who have no possibility in their system for feeding back regenerative energy who cannot use a standard braking chopper as the power generated when braking is too high Overview of the application The following diagram provides an overview of the application. Fig. 1-1 application overview DC-link Energy flow Line Module Power supply Braking chopper Description of the application The application provides a solution for connecting a braking unit to the DC link. When a DC link voltage threshold is exceeded, this automatically dissipates the excess energy to protect the components against overvoltage. Entry ID: , V1.1, 08/2017 4

5 1 Introduction 1.2 Principle of operation Overview of the overall solution Energy that is generated, which the DC link can no longer absorb, is automatically detected by the Motor Module operating as braking chopper - and is dissipated via the braking resistors. With the help of this configuration an overcharging of the DC link along with the associated overvoltage trip is avoided. The braking chopper automatically shuts down if there is no longer any braking energy. Schematic The following schematic shows the most important components of the solution: Fig. 1-2 Components needed for the Application Infeed MoMo double MoMo single MoMo double Braking resistors Motors In an axis group with several motors, energy that is generated when braking is fed back into the DC link (motors in such a group change between operating as motors and generators). Entry ID: , V1.1, 08/2017 5

6 1 Introduction If this energy is not directly used by the other drives not fed back into the line supply because an infeed unit is being used that is not capable of energy recovery not fed back into the line supply because an infeed unit capable of energy recovery that is being used has failed due to a line fault the energy must be dissipated using braking resistors in order to protect the DC link components against overvoltage. Advantages The application described here offers you the following advantages: Saving the costs of an infeed unit capable of energy recovery Axes can be reliably and safely stopped when the line supply fails Can replace several Braking Modules Demarcation It is assumed that readers have basic knowledge of these topics. Entry ID: , V1.1, 08/2017 6

7 1 Introduction Description of the core functionality The braking chopper includes the power electronics and the associated control circuit. In operation, the excess DC link energy is converted into heat (power loss) in the braking resistors. Users must integrate and parameterize the program and dimension the components - which depend on the conditions related to the application. Sequence of the core functionality Regenerative axis feeds the DC link U DC link increases Upper U DC link threshold No Yes Pulse enable for Chopper Motor Module U DC link decreases U DC link threshold again Yes No Inhibit pulse enable for Chopper Motor Module Fig. 1-3 Chopper sequence diagram Entry ID: , V1.1, 08/2017 7

8 1 Introduction Table 1-1 Action 1. A braking axis in the group feeds back regenerative energy into the DC link 2. If this energy is not used by other motors in the group, the DC link voltage increases 3. The application continually monitors the DC link voltage 4. Once the set voltage threshold has been reached, the application enables the chopper pulses 5. The chopper module pulses the DC link voltage to the braking resistors. 6. Current flows and discharges the DC link: The DC link voltage decreases 7. The application automatically removes the pulse enable once the DC link voltage has fallen below the chopper activation threshold again Note Monitoring in the 1ms cycle of the DCC chart Voltage threshold: p2900 Pulse enable: p852 Entry ID: , V1.1, 08/2017 8

9 1 Introduction 1.3 Components used This application example was created with these hardware and software components: Table 1-2 Example of a typpical component list Component Number Order number Note Braking resistors 3 For example, the GINO ESE company Motor Module (S120) booksize Order number dependent on the power and resistance value. 1 6SL Order number dependent on the power, voltage and cooling method Starter/Scout 1 6SL3072-0AA00-0AG0 Commissioning software S120 firmware V SL3054-0CG00-1AA0 or higher This application example comprises the following components: Table 1-3 Parts of the Application Component File name Note App_Bremschopper_Proj_02_Skript.zip Skript_1_Chopper.xml Chopper.xml This zipped file contains the Starter project and the script. Import file for the script Import file DCC braking chopper Entry ID: , V1.1, 08/2017 9

10 2 Engineering 2 Engineering 2.1 Design SINAMICS S120 Motor Modules in the booksize format can be used as 3-phase braking choppers. The use as braking chopper is always recommended for applications which require extremely high braking powers - and especially high continuous braking powers. The precondition is that the braking operations are not high dynamic, as the response time is approximately 4-5 ms - approximately twice that of the response time of the SINAMICS Braking Modules. This is the reason that for fast braking operations additional booksize format Braking Modules should always be used that bridge this delay time. SINAMICS S120 Motor Modules, which operate as 3-phase braking chopper, are connected to the DC busbar, fused/protected and pre-charged, just like Motor Modules in a standard application. The arrangement within the drive group should, if possible, be realized at the location where the highest amount of regenerative energy is injected - i.e. if possible, next to the Motor Modules that supply the highest regenerative energy. At the output of the Motor Module, which operates as braking chopper three identical R BR braking resistors - instead of a motor - are connected in a star configuration, which form a symmetrical ohmic load. These can be implemented as three individual resistors in separate housings or as symmetrical three-phase resistor in one housing. Unsymmetrical or single-phase resistor arrangements are not permitted. Fig. 2-1 Arrangement of the braking resistors The temperature switches (NC contacts) to thermally monitor the three braking resistors are connected in series, and can be monitored by the Motor Module. The minimum cable length to the braking resistors is 10 m. A motor reactor should be used if the 10 m cannot be implemented. According to the motor cable length for Motor Modules used in a standard application, the maximum cable length is 100m for shielded cables - and 150 m for unshielded cables. The recommended cable types as well as the recommended and maximum cable cross-sections that can be connected, correspond to the specifications for S120 Motor Modules used in a standard application. Entry ID: , V1.1, 08/

11 2 Engineering 2.2 Selecting the Motor Modules Some SINAMICS S120 Motor Modules have lower output currents when they are used as three-phase braking chopper, compared to standard applications. The reason for the reduced output currents is that the output power is a pure active power. Contrary to standard applications, where the output power includes a reactive component, which is supplied from the own DC link the complete output power in braking chopper operation has to be transferred via the DC busbar - and as a result the current load of the DC fuses increases. The DC fuses in the aircooled Motor Modules represent a device-dependent limit when used as braking chopper, and therefore - depending on the particular device - currents must be derated by up to 12 %. The permissible output currents when used as braking chopper (continuous braking current I n, base load braking current I H - as well as the maximum braking current I max ) are listed in the table with the device-specific technical data: Table 2-1 Selecting a Motor Module as braking chopper Type rating MoMo Rated current MoMo Maximum current Chopper threshold Continuous braking power Referred to Rn Peak braking power Referred to Rn Braking resistor Min. braking resistor Phase voltage Max. phase voltage rms P n I n I max U DClink_br P n_br P max_br R n R min U ph_max U ph_rms [kw] [A] [A] [V] [kw] [kw] [Ω] [Ω] [V] [V] The appropriate Motor Module is selected based on the rms braking power of the application and the comparable continuous braking power of the Motor Module according to Table 2-1 column P n_br. P Br _ rms Entry ID: , V1.1, 08/

12 2 Engineering Depending on the duration of the braking operation, the duty cycle produced by the application can be compared with one of the following standard duty cycles. Duty cycle with preload condition Duty cycle without preload condition S6 duty cycle with preload condition, S6 duty cycle with preload condition, duty cycle duration: 600s duty cycle duration: 60s Duty cycle with 60s overload, Duty cycle with 30s overload, duty cycle duration: 300s duty cycle duration: 300s Fig. 2-2 Duty cycles The maximum possible output current I max cannot be exceeded - not even briefly. The values for base load current I H, as well as the maximum output current I max are device-specific and must therefore be taken from the relevant catalogs or the sections on specific unit types in the configuration manual. These overload values (Fig. 2-2, series of diagrams below) apply on condition that the converter is operated with nominal pulse frequency and that it's base load current before and after the period of overload is applied on the basis of a duty cycle duration of 300 s in each case. The current duty cycle diagram can also be used for the braking power in the chopper application because the total output current of the Motor Module is required as active current. The continuous braking power is higher than the type rating due to the fact that the type rating is calculated based on the motor with the highest reactive power component. For dissipating braking energy into resistances only active power is required - this is the reason that the Motor Module does not have to keep any power reserve for reactive power. Entry ID: , V1.1, 08/

13 2 Engineering 2.3 Chopper activation threshold Table 2-2 Braking chopper activation threshold Line voltage U line 3AC 380V - 400V 3AC 500V - 600V 3AC 660V - 690V Activation threshold Braking chopper U DClink- brake 667V - 774V 841V - 967V 1070V V Activation threshold U DClink-brake must be at least 50V 70V above the DC link voltage that is to be expected as maximum value during motoring operation of the installation. Also line voltage tolerances have to be considered. This ensures that the Motor Module (braking chopper) only operates when the drive system is regenerating. On the other hand, it is not permitted to increase the upper value of the table in order to avoid that the Motor Module shuts down due to a DC link overvoltage. 2.4 Dimensioning the braking resistor Formula 2.1 The braking resistor is selected according to the rms braking power P br-rms of the duty cycle: R Br 3 U = P 2 ph _ rms Br _ rms Where Formula 2.2 U ph _ rms = U DClink -brake 1,5 2 and Formula 2.3 P Br _ rms = P ² t + P ² t +... P ² t 2 total n t 3 Entry ID: , V1.1, 08/

14 2 Engineering The braking resistors limit the Motor Module current, and must be selected so that maximum current I max is not exceeded. This means that the minimum braking resistor value is defined by: Formula 2.4 U _ max R ph U Br I with DClink - U ph _ max = 1, 5 max brake Note Resistors generally have certain production tolerances (+/-20%). Furthermore, the application should be provided some control margin. Evaluating the current with a factor of 0.75 compensates for the tolerances and guaranties a safe control margin. Formula 2.5 R Br-save 3 U = P 2 ph _ rms Br _ rms 0,75 Entry ID: , V1.1, 08/

15 2 Engineering 2.5 Dimensioning example The components can be dimensioned according to the expected current or the expected braking power. In this example, the following duty cycle is used as basis for dimensioning: Fig. 2-3 Dimensioning example - duty cycle The peak load can directly be taken from Fig. 2-3: P Br _ max = 6kW The rms power can be calculated according to Formula 2.3 to check which continuous load the Motor Module must be able to handle: P P1 ² t1 + P2 ² t Pn ² t3 t 6² 1+ 1² 2 + 3² 2 + 2² Br _ rms = = = 2, 83 total 8 2 kw With the values of the maximum and continuous braking power, according to Table 2-1 the Motor Module with 5A rated current must be used. Entry ID: , V1.1, 08/

16 2 Engineering A factor of 0.75 must be taken into consideration if you wish to stick to the recommendation of maintaining a control margin to compensate for any tolerances: P Br _ rms P n _ Br 2,83kW kW 2.83kW 2, 85kW The braking resistor is calculated as follows: R ( 314.4V ) U ph 3 Br _ save = 0,75 = 0,75 = 73, 2 PBr _ rms 3.04kW Ohm The resistance value is not critical. The recommended braking resistor with R n = 63 Ohm can also be used or another braking resistor with similar values, since the minimum braking resistance for this Motor Module is only 44.5 Ohm. If neither of the duty cycles matches the configured application, the load values for Motor Module and the selected braking resistors must be checked. Entry ID: , V1.1, 08/

17 3 Commissioning the application 3 Commissioning the application The section "Commissioning the application" discusses all the steps required for integrating the key functions "Motor Module as braking chopper" into your application. Preparatory work and parameterization steps are explained. 3.1 Program description The precise principle of operation is explained in the "Program description" section. Here, you can find parameter lists, diagrams and function descriptions of the core function Function description The chopper activation threshold, which is defined in fixed setpoint p2900[0], is subtracted from the actual DC link voltage (r70). If the value is positive, i.e. the DC link voltage is greater than the chopper activation threshold, the value from the limiter is passed through and output as voltage setpoint for the converter (p1330[0]) via the proportional controller with gain (p21515 "Chopper gain"). When the zero limit is exceeded, the voltage difference from the limiter is evaluated by the comparator. This switches the pulse enable of the inverter (p852). Fig. 3-1 Function block diagram DCC chopper Entry ID: , V1.1, 08/

18 3 Commissioning the application By running the script, the wiring shown in the function block diagram above is established and the associated DCC chart generated: Fig. 3-2 DCC "Chopper" chart Parameter description Important adjustable parameters include: Chopper activation threshold: p2900 (Fixed value 1 [%]). Setting the gain: p21515 (Chopper gain) Program environment and interfaces - control signals/setpoints/actual values: Switch the chopper to ready: Output voltage: Actual DC link voltage: Acknowledge faults: p840 (On/Off1) p1330 (U/f control independent voltage setpoint) r70 (Actual DC link voltage) p2104 (Acknowledge faults) Overview of feedback signals: Chopper ready to switch on: Chopper ready: Chopper faulted: r899.0 (Ready for switching on) r899.1 (Ready) r (Fault present) Entry ID: , V1.1, 08/

19 3 Commissioning the application 3.2 Commissioning Hardware The components must be arranged and wired as described in Chapter 2.1. Please check: Software There always have to be 3 resistors connected at the inverter output in star connection or delta connection (depending on the design). The resistance values [Ω] per phase must be checked. The temperature sensor contacts of all 3 resistors must be connected and parameterized in series as a feedback signal for an "external fault" of the converter. It must be ensured that the cables to the braking resistors are at least 10 m long. Note Create a VECTOR drive in the STARTER offline configuration or auto-configuration mode. The Motor Module used should be selected from the list, or it is automatically configured using the Drive CLiQ data. Offline, a standard induction motor is selected as fictitious motor, whose rated current is at least as high as the nominal current of the Motor Module. If a motor with a rated current higher than that of the Motor Module is selected, the maximum Motor Module current acts as current limit p640. This also ensures that the peak braking power can be reached. All of the other parameters are not critical, as they are automatically set or overwritten by executing the script. This means that the offline configuration can be quickly "clicked" through. Entry ID: , V1.1, 08/

20 3 Commissioning the application Commissioning script Right click on the VECTOR-drive on Expert, Insert script folder Fig. 3-3 Instruction to insert SCRIPTS folder Entry ID: , V1.1, 08/

21 3 Commissioning the application The SCRIPTS folder appears at the bottom in the object tree of the drive Right click on folder SCRIPTS, Import folders/objects Fig. 3-4 Instruction to import the script 1 Using the Browse button, navigate to the directory that contains the unzipped xml file Script_1_Chopper and click on OK. The script is now inserted. Fig. 3-5 Instruction to import the script 2 Entry ID: , V1.1, 08/

22 3 Commissioning the application Right click on script file Script_1_Chopper, click on Accept and execute. The script is now run, the parameters set and the DCC chart generated Fig. 3-6 Instruction to accept and execute the script The following criteria are taken into account when parameterizing using the script: Formula 3.1 The frequency setpoint should always be 50Hz electrical (entered using fixed value p1001). Correspondingly, the fixed speed setpoint should be set according to 60 50Hz n fix = p where p represents the motor pole pair number. It is not necessary to calculate the motor data (p340 = 0). The motor identification must be deselected (p1900 = 0). The DCC blocks should be processed with the smallest execution time to ensure the fastest possible chopper response. The setting for the execution time depends on the current controller clock cycle. For Motor Modules in the booksize format with 125µs, 250µs or 500µs current controller clock cycle, the blocks can be calculated with a minimum execution time of 1ms. Entry ID: , V1.1, 08/

23 3 Commissioning the application The following parameters are set when the script is run. Table 3-1 Parameter setting list Setting Parameter Meaning value p1300 [0] Control mode 19 Independent voltage setpoint p1802 [0] Modulation mode 0 Automatic switchover SVM/FLB p1803 [0] Modulation depth 100 Maximum p1120 [0] Up ramp 0 p1121 [0] Down ramp 0 p1020 [0] Fixed speed setpoint % p1001 [0] Rated speed =3000/p p1240 [0] VDC controller 0 Inhibit controller p320 [0] Magnetizing current 0 p340 Motor data 0 No calculation p346 [0] Excitation build-up time p347 [0] De-excitation time 0 p1900 [0] Motor identification 0 Deselect p640 [0] Current limit = maximum Motor Module current p1310 [0] Voltage boost Permanent 0 p1311 [0] p1312 [0] p600 [0] p601 [0] p612 [0] Voltage boost when accelerating Voltage boost when starting Motor temperature sensor for monitoring Motor temperature sensor type Mot_temp_mod activation p2001 Reference voltage 1000 p2900 [0] Chopper threshold 667V (dependent on supply 66.7 voltage) p21000[1] DCC clock cycle 1 1ms p21515 Chopper gain 15 Default value Note The parameters can also be manually set, based on the list. However, running the script is far more user-friendly and faster. Entry ID: , V1.1, 08/

24 3 Commissioning the application Optimization It may be necessary to subsequently adjust the chopper gain (p21515]). This requires a trace of the output current r68[0] and the DC link voltage (r70). If the DC link voltage oscillates when the chopper is active, reduce the preset value from 150 % in steps of 10%. If the output current does not oscillate and if the drives trip with a DC link overvoltage fault while braking, this value must be increased in steps of 10%. The value should only be increased to a level that does not result in oscillation of the DC link voltage. A well optimized braking characteristic is shown below. Activation threshold U DClink Fig. 3-7 Trace of optimized chopper Pulse enable As can be seen in Fig. 3-7, the DC link voltage hardly oscillates, the chopper remains switched-on for most of the braking operation - and only starts to switch-on and switch-off towards the end. Example of a braking chopper that has not been adequately set: Undesired oscillation on VDClink Fig. 3-8 Trace of badly optimized chopper It can be clearly seen that the DC link voltage oscillates. As a result of the high control gain, the DC link voltage quickly falls below the chopper activation threshold and the chopper deactivates the pulse enable. U DClink increases above the Entry ID: , V1.1, 08/

25 3 Commissioning the application activation threshold and the Motor Module starts to pulse again (see bit track r852 below). If the gain factor is set too high (e.g. chopper gain = 80 instead of the optimum chopper gain = 10 15), then the DC link oscillates heavily. It is crucial that this high oscillation is avoided, as it places a lot of stress on the DC link capacitors. Note For short duty cycles (e.g. lifting gear), the fan run-on time (p295) should be increased to prevent continuous switching (premature wear) of the fan relay during each braking process Controlling the chopper The chopper is activated when it is switched on via p0840[0] (On/Off1) and the DC link voltage reaches the chopper threshold set using p2900[0]. It must be observed that the chopper cannot be switched on via p840[0] until the infeed has ramped up the DC link, since the chopper would otherwise go into a fault condition with a DC link undervoltage fault message. For example, you can implement this monitoring function by parameterizing p864 (BI: Infeed operation) = r863[0] (Infeed 1: Closedloop control operation) in the Motor Module. The On command for the infeed is also used as On command for the chopper. In order to still guarantee chopper operation even if the infeed goes into a fault condition, alarm A07841 "Infeed operation withdrawn" must be intercepted (p2018; p2119). In the event of a chopper fault, the On command must be withdrawn, the fault acknowledged and the On command reissued. Entry ID: , V1.1, 08/

26 4 Parameter description 4 Parameter description r21510 CI: Actual "DC link voltage" VECTOR Can be changed: - Calculated: - Access level: 1 Data type: real Dynamic index: - Function block diagram: - BC1000- P group: - Unit group: - Unit selection: - Not for motor type: - Expert list: 1 Description: Min Max Factory setting CI: Input of the actual DC link voltage. Interconnected with r70 p21511 CI: Chopper threshold voltage VECTOR Can be changed: T Calculated: - Access level: 1 Data type: real Dynamic index: - Function block diagram: - BC1000- P group: - Unit group: - Unit selection: - Not for motor type: - Expert list: 1 Min Max Factory setting - - P2900[0] Description: Setting the chopper activation threshold. Recommendation: Interconnection with p2900 of the chopper drive Note: The voltages are referred to p2001 and p2900 calculated in %. This results in a display in the ratio 1/10. p21515 Chopper gain VECTOR Can be changed: T Calculated: - Access level: 1 Data type: real Dynamic index: - Function block diagram: - BC1000- P group: - Unit group: - Unit selection: - Not for motor type: - Expert list: 1 Min Max Factory setting Description: Setting the chopper gain. Recommendation: Optimized according to the description: Chapter Optimization Note: p21520 CO: Setpoint output voltage V/f VECTOR Can be changed: T Calculated: - Access level: 1 Data type: real Dynamic index: - Function block diagram: - BC1000- P group: - Unit group: - Unit selection: - Not for motor type: - Expert list: 1 Min Max Factory setting - p1330 Description: Output setpoint chopper output voltage for the V/f characteristic. Recommendation: Note: Entry ID: , V1.1, 08/

27 4 Parameter description p21521 CO: Enable pulses VECTOR Can be changed: T Calculated: - Access level: 1 Data type: boolean Dynamic index: - Function block diagram: - BC1000- P group: - Unit group: - Unit selection: - Not for motor type: - Expert list: 1 Min Max Factory setting - p852 Description: Output pulse enable for chopper module Recommendation: Note: Entry ID: , V1.1, 08/

28 5 Appendix 5 Appendix 5.1 Service and Support Industry Online Support Technical Support Do you have any questions or need assistance? Siemens Industry Online Support offers round the clock access to our entire service and support know-how and portfolio. The Industry Online Support is the central address for information about our products, solutions and services. Product information, manuals, downloads, FAQs, application examples and videos all information is accessible with just a few mouse clicks at: The Technical Support of Siemens Industry provides you fast and competent support regarding all technical queries with numerous tailor-made offers ranging from basic support to individual support contracts. You send queries to Technical Support via Web form: Service offer Our range of services includes, inter alia, the following: Product trainings Plant data services Spare parts services Repair services On-site and maintenance services Retrofitting and modernization services Service programs and contracts You can find detailed information on our range of services in the service catalog: Industry Online Support app You will receive optimum support wherever you are with the "Siemens Industry Online Support" app. The app is available for Apple ios, Android and Windows Phone: Entry ID: , V1.1, 08/

29 5 Appendix 5.2 Contact person Siemens AG Digital Factory Division Factory Automation Production Machines DF FA PMA APC Frauenauracher Str Erlangen, Germany mailto: 5.3 Links and Literature Table 5-1 No. \1\ Siemens Industry Online Support Subject \2\ Link to the entry page of the application example: \3\ System-based braking resistors / GINO ESE (Braking resistor brochure PDF) Change documentation Table 5-2 Version Date Change V1.0 10/2014 First Edition V1.1 07/2017 Adaptation of the braking power calculation Entry ID: , V1.1, 08/