Danfoss iC7 Series Operating Manual
Frequency converters, 1.3–106 a
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- Application manual (382 pages) ,
- Design manual (224 pages) ,
- Operating manual (82 pages)
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Summary of Contents for Danfoss iC7 Series
- Page 1 Operating Guide iC7 Series Functional Safety Frequency Converters, 1.3–106 A drives.danfoss.com...
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Page 3: Table Of Contents
Series Functional Safety Operating Guide Contents Contents Introduction Version History Purpose of this Operating Guide Additional Resources Abbreviations Safety Qualified Personnel for Working with Functional Safety General Safety Considerations iC7 Functional Safety Safe Torque Off (STO) STO Activation Automatic/Manual Restart Behavior... - Page 4 Series Functional Safety Operating Guide Contents Operating Conditions Cable Specifications 4 | Danfoss A/S © 2023.03 AQ319741840653en-000201/136R0268...
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Page 5: Introduction
This operating guide provides information on the functional safety features of the iC7 drives and is targeted at users already familiar with the Danfoss iC7 series. It is intended as a supplement to the drive-specific guides. The guide includes instructions on how to verify that the built-in functional safety features are active, and about configuring the safety features. - Page 6 Safe Torque Off EN IEC 61800-5-2:2017 Safe Stop 1 SRECS – Safety-related electrical control system SRP/CS EN ISO 13849-1:2015 Safety-related parts of control systems PDS/SR EN IEC 61800-5-2:2017 Power Drive System (safety-related) 6 | Danfoss A/S © 2023.03 AQ319741840653en-000201 / 136R0268...
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Page 7: Safety
Series Functional Safety Operating Guide Safety 2 Safety 2.1 Qualified Personnel for Working with Functional Safety Only qualified personnel can install, configure, commission, maintain, and decommission functional safety features and functions. Qualified personnel for working with functional safety features are qualified electrical engineers, or persons who have received training from qualified electrical engineers, and are suitably experienced to operate devices, systems, plants, and machinery in ac- cordance with the general standards and guidelines for safety technology. -
Page 8: Ic7 Functional Safety
For more details on the security features included in the application software, refer to application software documentation. 8 | Danfoss A/S © 2023.03 AQ319741840653en-000201 / 136R0268... -
Page 9: Frequency Converters With Functional Safety Group 1 (Not Upgradable)
Series Functional Safety Operating Guide iC7 Functional Safety Configurable security features can be adjusted according to application requirements. Depending on the software version of the frequency converter, the parameters can be password-protected. 3.5 Frequency Converters with Functional Safety Group 1 (Not Upgradable) Frequency converters with STO (+BEF1) provide the Safe Torque Off (STO) safety function with a dual-channel, galvanically isolated input, and an STO feedback signal for diagnostic purposes. -
Page 10: Sto Failure
STO feedback is a single channel feedback signal which can be used for diagnostic purposes, and for providing an indication of an active STO. It can help to achieve better safety capability on system level, for example, in retrofit cases, where a diagnostic feedback to the safety system is required. 10 | Danfoss A/S © 2023.03 AQ319741840653en-000201 / 136R0268... - Page 11 Series Functional Safety Operating Guide iC7 Functional Safety Supply External safety device X31 S.INA+ X31 S.FB+ X32 S.INA– X32 S.FB– STO inputs STO feedback X31 S.INB+ X32 S.INB– Illustration 3: STO Feedback Example (1/2) It can also be used as a digital output for providing a status signal. In this case the load could be a digital input of a PLC.
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Page 12: Installation
+ STO Input Channel A S.INA– - STO Input Channel A S.INB+ + STO Input Channel B S.INB– - STO Input Channel B S.FB+ + STO Input Channel B S.FB– - STO Feedback 12 | Danfoss A/S © 2023.03 AQ319741840653en-000201 / 136R0268... -
Page 13: Connection Examples
Series Functional Safety Operating Guide Installation The frequency converter is shipped without any wiring to the functional safety I/O terminals. As a result, all safe inputs are de-ener- gized and STO is active. If the STO safety function is not needed, wire the terminal block as shown in... - Page 14 44 S.FB+ +24 V 45 GND Safety Actuator 46 S.INA– 47 S.INB– 48 S.FB– Illustration 8: STO Connection Example for Using Different Polarities For other wiring examples, see application software documentation. 14 | Danfoss A/S © 2023.03 AQ319741840653en-000201 / 136R0268...
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Page 15: Commissioning
Series Functional Safety Operating Guide Commissioning 5 Commissioning 5.1 Safety Instructions for Commissioning 2 Safety and the relevant drive operating guides for more instructions on safety. Always observe the instructions provided by the motor manufacturer. W A R N I N G RESIDUAL ROTATION The STO function can be used for asynchronous, synchronous, and permanent magnet motors. -
Page 16: Commissioning Test For Sto Applications In Automatic Restart Mode
If the STO feedback is utilized, verify that STO is activated by checking the state of the STO Feedback. See Illus- □ tration Reapply 24 V DC to STO inputs. □ Ensure that the motor becomes operational and runs within the original speed range. □ 16 | Danfoss A/S © 2023.03 AQ319741840653en-000201 / 136R0268... -
Page 17: Operation And Maintenance
Series Functional Safety Operating Guide Operation and Maintenance 6 Operation and Maintenance 6.1 Functional Tests • It is required for PL e or SIL3 to conduct a functional test every 3 months to detect any failure or malfunction of the STO func- tionality. -
Page 18: Diagnostic Tests
It may take a long time for the motor to stop. If a control panel is mounted, check if STO – Fault Ch A is shown on the control panel. □ 18 | Danfoss A/S © 2023.03 AQ319741840653en-000201 / 136R0268... - Page 19 Series Functional Safety Operating Guide Operation and Maintenance Test procedure Approved If the control panel is not mounted, check if STO – Fault Ch A is listed in the event log. □ Verify that the STO Feedback output does not signal an active STO. (The output signals a full STO only when □...
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Page 20: Specifications
PFH: < 8 FIT Probability of Dangerous Failure on Demand PFD: < 5·10 Hardware Fault Tolerance = 1 Subsystem Classification Type A Proof Test Interval T1 20 years Mission time TM 20 years 20 | Danfoss A/S © 2023.03 AQ319741840653en-000201 / 136R0268... -
Page 21: Technical Data
Series Functional Safety Operating Guide Specifications Directive or Standard Version Reaction time Input to output response time < 30 ms Fault reaction time < 30 ms Mode of operation High demand, Low demand, and Continuous Input to output response time with shielded cables. Otherwise, a maximum of 20 ms might be added to this value under worst case EMC condi- tions. - Page 22 For PD2 condensing environments, the product must be installed in IP54/NEMA 12 cabinet as per EN IEC 60529 AMD 2:2013 , or similar. Check the operating conditions for each drive from the product-specific design guide or operating guide. Latest versions of Danfoss product guides are available for download at http://drives.danfoss.com/downloads/portal/.
- Page 23 Series Functional Safety Operating Guide Index Index +BEF1........................9 Qualified personnel..................7 Abbreviations....................5 Safe Torque Off....................8 Additional documentation................5 Safety considerations..................7 Safety precautions..................7 Standards Functional safety................. 20 Change log......................5 Standards and directives ISO 13849-1....................5 IEC 61508....................5 Functional safety I/Os................21, 21 IEC 61800-5-2..................
- Page 24 Danfoss reserves the right to alter its products without notice. This also applies to products ordered but not delivered provided that such alterations can be made without changes to form, fit or function of the product. All trademarks in this material are property of Danfoss A/S or Danfoss group companies.
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