Applications & Tools. Line Contactor Control using the ON/OFF1 Command for SINAMICS G120. SINAMICS G120 with firmware V4.

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1 Line Contactor Control using the ON/OFF Command for SNAMCS G2 SNAMCS G2 with firmware V4.4 and higher Application August 22 Applications & ools Answers for industry.

2 Siemens ndustry Online Support his article is taken from the Siemens ndustry Online Support. he following link takes you directly to the download page of this document: Caution he functions and solutions described in this article confine themselves to the realization of the automation task predominantly. Please take into account furthermore that corresponding protective measures have to be taken up in the context of ndustrial Security when connecting your equipment to other parts of the plant, the enterprise network or the nternet. Further information can be found under the tem-d You can also actively use our echnical Forum from the Siemens ndustry Online Support regarding this subject. Add your questions, suggestions and problems and discuss them together in our strong forum community: Line Contactor Control using the ON/OFF Command for SNAMCS G2 Version, tem-d:

3 s ask Function of the circuit 2 Function diagram 3 SNAMCS G2 Line Contactor Control using the ON/OFF Command for SNAMCS G2 Appendix 4 Line Contactor Control using the ON/OFF Command for SNAMCS G2 Version, tem-d:

4 Warranty and liability Warranty and liability Note he Application Examples are not binding and do not claim to be complete regarding the circuits shown, equipping and any eventuality. he Application Examples do not represent customer-specific solutions. hey are only intended to provide support for typical applications. You are responsible for ensuring that the described products are used correctly. hese 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. f 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 ). he 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. he 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 Siemens ndustry Sector. Line Contactor Control using the ON/OFF Command for SNAMCS G2 Version, tem-d:

5 able of contents able of contents Warranty and liability...4 ask...6. Overview Delimitation Function overview of the line contactor control Function of the circuit ON command for the line contactor ON command for the converter OFF command for the converter OFF command for the line contactor Feedback from the line contactor Power unit monitoring Runtime groups of the free function blocks erminal assignment Overview of the switching sequence... 3 Function diagram... 4 Appendix nternet link specifications History...2 Line Contactor Control using the ON/OFF Command for SNAMCS G2 Version, tem-d:

6 ask. Overview ask. Overview ntroduction SNAMCS G2 converters are designed to be directly connected to the line supply; neither a line nor input contactor is required. However, line contactors are required in some applications. A circuit is described, which allows the line contactor to be automatically opened and closed via a digital output contact in the converter Control Unit. he line contactor is switched using the ON/OFF command of the converter. his ON/OFF command can be received from every active converter command source. Optionally, the line contactor can be opened each time that the converter is switched-off, for example, as a result of a fault. No external components are required to implement the control. However, the permissible switching power (switching rating) of the digital output contact and the closing/holding power of the line contactor solenoid must be checked. t may be necessary to use an auxiliary contactor/relay..2 Delimitation his document does not include any specifications regarding how the the converter is configured the basic commissioning of the converter higher-level controls for commissioning t is assumed that readers have a basic knowledge of these topics. his solution can be used for: SNAMCS G2 with Control Units CU23P-2, CU24B-2, CU24E-2 and firmware from version 4.4 An external 24 V power supply must be connected to the converter via terminals 3 and 32 of the Control Unit: his solution cannot be used for: SNAMCS G2C with the actual firmware release v4.4 SNAMCS G2 up to and including firmware release v3.x MCROMASER 4 For these drives, parameter p857 cannot be accessed, with which the monitoring time for the DC link pre-charging can be set (i.e. extended). As a result of the excessively low DC link voltage, the converter quickly goes into the "Fault" state when the ON/OFF command is issued. Line Contactor Control using the ON/OFF Command for SNAMCS G2 Version, tem-d:

7 ask.3 Function overview of the line contactor control.3 Function overview of the line contactor control Fig. - Function overview of the line contactor control SNAMCS G2 Control Unit OFF2 / OFF3 (optional) Line contactor ON/OFF via DO L L2 L3 PE Line + contactor 24V Line contactor feedback via D Fault message Line filter Line reaktor ON/OFF command for drive Command sources: - Wire control / D - Field bus - OP / BOP-2 - USB / SARER Drive ON/OFF V external non-switched Power Modul Sine-wave filter Output reaktor U AC DC V DC AC W PE M 3~ Line Contactor Control using the ON/OFF Command for SNAMCS G2 Version, tem-d:

8 2 Function of the circuit 2. ON command for the line contactor 2 Function of the circuit 2. ON command for the line contactor he line contactor is controlled with the ON command from every command source. Possible command sources for SNAMCS G2: OP / BOP-2 A digital input, e.g. for 2 or 3-wire control configurations USB / SARER Fieldbus / PROFNE Using the switching command of the active command source, bit in control word, parameter r54. "ON/OFF", is set/reset. Parameter r54. controls the reset-dominant flip-flop RSR. he RSR output signal switches the line contactor via digital output DO. 2.2 ON command for the converter he converter is also switched on/off using the ON/OFF command. However, it only starts once all of the internal enable conditions have been fulfilled. Here, this specifically involves the DC link voltage, which is established after the line contactor has been closed ("pre-charging"). With an adequate pre-charging level, the converter switches on and the motor starts. 2.3 OFF command for the converter With the OFF command, parameter r54. "ON/OFF" is set to zero, and the converter ramps-down to a standstill along the down ramp. 2.4 OFF command for the line contactor When "ON/OFF" r54. is reset, a delay time starts in FFB PDE ; when this time elapses, the flip-flop is reset and the line contactor opened. he delay time must be set depending on the technology involved. For instance, the following times should be taken into account: p2 ramp-function generator down time p35 OFF3 ramp-down time p27 motor holding brake, closing time p228 pulse cancellation delay time p233 DC braking duration Optionally, the line contactor can be opened with the delayed (PDE 2) switch-off edge of the signal "operation enabled", status word bit 2, r52.2. As a Line Contactor Control using the ON/OFF Command for SNAMCS G2 Version, tem-d:

9 2 Function of the circuit 2.5 Feedback from the line contactor consequence, the OFF2 and OFF3 commands also open the line contactor. However, this shutdown type can never replace safety shutdown functions! Further, it is not permissible to use this shutdown type when automatic restart has been preselected. imes PDE and PDE 2 should be the same length. 2.5 Feedback from the line contactor he line contactor is monitored using the generally used combination of exclusive OR/closing delay for unsuccessful switching attempts. n the case of a fault, the "External fault " message is output with the attribute "No fault response". he setting "No fault response" means that converter operation isn't negatively influenced for an incorrect message. he unsuccessful switching attempt monitoring should only be seen as a support function for service personnel. t does not have to be implemented from an operational perspective, because for a switchon fault, one of the faults F782/F327 mentioned below is output. However, a switch-off fault can then no longer be detected. 2.6 Power unit monitoring he basis of the solution presented here is the parameterizable monitoring time of the power unit p857. he monitoring time for the ready signal of the power unit predominantly involves the time required to pre-charge the DC link. he monitoring time is started after a / edge of the ON/OFF command. f, within the monitoring time, the power unit does not return a ready signal, then fault F782 "Drive: nfeed or power unit not ready" is output. he monitoring time p857 can be set up to max. 6s; however it is internally limited to a maximum value depending on the particular power unit. When the maximum pre-charging duration is exceeded, fault F327 "Power unit: Pre-charging DC link time monitoring" is output. Parameter p857 should be set so that the faults mentioned above are not initiated/output. 2.7 Runtime groups of the free function blocks With just one exception, all of the FFB are assigned the slowest runtime group 6. he NO block, which initiates the "External fault " message, must run in the fastest runtime group. Otherwise, immediately when the Control Unit is switched on, the fault to be acknowledged is set, because the NO block was still not processed. f the "External alarm " (p22/f785) message, which that does not have to be acknowledged, is parameterized instead of the "External fault " message, then the NO block can also be assigned to runtime group erminal assignment he terminals for the contactor control/feedback signal used in the circuit are part of the solution example. n the specific application, when required other terminals should be configured, for example because the CU24B-2 does not have a terminal 7. Line Contactor Control using the ON/OFF Command for SNAMCS G2 Version, tem-d:

10 2 Function of the circuit 2.9 Overview of the switching sequence 2.9 Overview of the switching sequence Fig 2- Switching sequence Command ON/OFF t Delay time contactor OFF PDE t > t Ramp-down, brake as p2, p228 t Contactor ON/OFF Pre-charging active Operation enabled r52.2 t < p857 t t t Line Contactor Control using the ON/OFF Command for SNAMCS G2 Version, tem-d:

11 Command source OP / BOP-2 3 Function ON/OFF diagram USB / SARER Digital nput Fieldbus Connecting ON/OFF source with SW Bit Monitoring Power unit Power unit monitoring time p857 (2.ms) Precharging DC link time monitoring F327 nfeed or power unit not ready F782 SW Bit r54. MFP inp_pulse p238 () MFP RG p24 (6) NO input p278 () MFP MFP RunSeq p242 (37) MFP pulse_dur ms p239 (.) NO NO run-time group... 6 p28 (6) NO run sequence p28 (6) MFP output r24 NO inv output r279 RSR inputs p288 Set [] [] Reset PDE inp_pulse p258 () S R PDE RG p26 (6) RSR RSR RG p29 (6) RSR RunSeq p292 (52) PDE PDE RunSeq p262 (43) N PDE output p259 (5.) RSR output r289 RSR inv outp N r29 PDE output r26 OR inputs p246 [] [] [2] [3] DO DO p73 Kl. 8-2 () CU23P-2: 3V DC / 5.A 25V AC / 2.A CU24B-2: 3V DC /.5A CU24E-2: 3V DC /.5A 2 3 OR OR RG p248 (6)? OR RunSeq p249 (43) 3 Function diagram - OR output r247 A A2 mains contactor L 3L2 5L V 3 4 NO 2 PDE 2 MFP Option: Switching OFF in the event of a fault Don t use this option when automatic restart mode (AR p2 > ) is enabled. Operating-mode enabled ZSW Bit 2 r52.2 NO 2 input p286 () NO 2 run-time group p288 (6) NO 2 inv output r287 PDE 2 inp_pulse p2334 () PDE 2 RG p2337 (6) PDE 2 t_del ms p2335 (5.) PDE 2 output r2336 MFP inp_pulse p243 () MFP RG p246 (6) MFP pulse_dur ms p244 (.) MFP output r245 switching fault monitoring NO 2 run sequence p289 (8) PDE 2 RunSeq p2338 (8) MFP RunSeq p247 (82) *Note: for CU24B-2 use an other nput/erminal Kl*. 7 D 5 (terminal 7) r722.5 XOR inputs p262 [] [] [2] [3] 2 3 XOR XOR run-time group p264 (6) = XOR run sequence p265 () XOR output r263 PDE inp_pulse p263 () PDE RG p266 (6) PDE PDE RunSeq p267 (44) PDE t_del ms p264 (5.) PDE output r265 Line Contactor Control using the ON/OFF Command for SNAMCS G2, ---Version, tem-d: NO input p282 () NO NO RG p284 () NO RunSeq p285 (7) NO inv output r283 CDS...3 Message External fault fault number for fault response External fault p2 p26 F786 [] [] [] Fault response [2] none p2 [3] [] [] Optional message External fault " with p22/f785

12 4 Appendix 4 Appendix 4. nternet link specifications his list is not complete and only represents a selection of relevant information. able 4- Subject \\ Reference to the entry \2\ Siemens ndustry Online Support itle MCROMASER, SNAMCS G: Controlling main contactor by using free function blocks (FFB) History able 4-2 Version Date Modifications V. July 22 First version Line Contactor Control using the ON/OFF Command for SNAMCS G2 Version, tem-d:

Line Contactor Control using the ON/OFF1 Command for SINAMICS G120

Application description 01/2014 Line Contactor Control using the ON/OFF1 Command for SNAMCS G120 SNAMCS G120 with firmware V4.4 and higher http://support.automation.siemens.com/ww/view/en/62883732 Warranty