Danfoss VLT AutomationDrive EZ FC 321 Operating Manual
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Danfoss VLT AutomationDrive EZ FC 321 Operating Manual

Danfoss VLT AutomationDrive EZ FC 321 Operating Manual

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Operating Guide
Safe Torque Off
VLT® AutomationDrive EZ FC 321
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Summary of Contents for Danfoss VLT AutomationDrive EZ FC 321

  • Page 1 Operating Guide Safe Torque Off VLT® AutomationDrive EZ FC 321 vlt-drives.danfoss.com...

  • Page 3: Table Of Contents

    Emergency Stop of Drive with STO Using Safety Relay - Category 3, PL d, SIL2 Emergency Stop of Drive with STO, Safety Relay, and Output Contactor - Category 4, PL e, SIL3 Emergency Stop of Multiple Drives - Category 3, PL d, SIL2 Danfoss A/S © 2022.11 AQ355238304444en-US0301/130R0955 | 3...
  • Page 4 Safe Torque Off Operating Guide Contents STO Technical Data Notices Regarding Technical Data European Directives Safety Standards Safety Function Safety Performance Appendix Abbreviations Conventions 4 | Danfoss A/S © 2022.11 AQ355238304444en-US0301/130R0955...

  • Page 5: Introduction

    1.1 Purpose of this Operating Guide This Operating Guide provides information for use of Danfoss VLT® AutomationDrive EZ FC 321 drives in functional safety applica- tions. The manual includes information about functional safety standards, Danfoss VLT® AutomationDrive EZ FC 321 Safe Torque Off (STO) function, the related installation and commissioning, and service and maintenance for STO.
  • Page 6 Operating Guide Introduction • IEC/EN 60204-1: 2016 Stop category 0 - uncontrolled stop. • IEC/EN 61508: 2010 SIL2. • IEC/EN 61800-5-2: 2016. • EN ISO 13849-1: 2015 Category 3 PL d. 6 | Danfoss A/S © 2022.11 AQ355238304444en-US0301 / 130R0955...

  • Page 7: Safety

    Optional step: Install additional measures (for example, a safety holding brake) if external forces influence the motor axis (for example suspended loads). 2.5 Safety Precautions See the Safety chapter in the relevant operating guides for general safety precautions. Danfoss A/S © 2022.11 AQ355238304444en-US0301 / 130R0955 | 7...
  • Page 8 The unintended restart prevention is implemented by other parts of the STO installation. A presence in the dangerous zone can be physically excluded when STO is not activated. In particular, observe paragraph 6.3.3.2.5 of ISO 12100:2010. 8 | Danfoss A/S © 2022.11 AQ355238304444en-US0301 / 130R0955...
  • Page 9 When designing the machine application, timing and distance must be considered for a coast to stop (Stop Category 0 or STO). For more information regarding stop categories, refer to EN 60204-1. Danfoss A/S © 2022.11 AQ355238304444en-US0301 / 130R0955 | 9...

  • Page 10: Installation

    12 or 13 (24 V DC). Connection and application examples are found in the chapter Application Examples. Complete wiring according to the instructions given in the Operating Guide of the drive. 10 | Danfoss A/S © 2022.11 AQ355238304444en-US0301 / 130R0955...

  • Page 11: Commissioning

    For applications without automatic restart after a safe stop, follow the instructions in 4.5.1 Restart Prevention for STO Applica- tion. • For applications with automatic restart after a safe stop, follow the instructions in 4.5.2 Automatic Restart of STO Application. Danfoss A/S © 2022.11 AQ355238304444en-US0301 / 130R0955 | 11...

  • Page 12: Restart Prevention For Sto Application

    If a failure is found in the periodic test, it must result in a safe state. The drive cannot guarantee a safe state so the test must be conducted in a way that secures a safe state, for example, via a safety PLC. Procedure Remove 24 V DC voltage supply at terminal 37. 12 | Danfoss A/S © 2022.11 AQ355238304444en-US0301 / 130R0955...
  • Page 13 If parameter 5-19 Terminal 37 Safe Stop is set to default value [1] Safe Stop Alarm, verify that the motor is not started auto- matically and restarts only by giving a reset signal via bus, digital I/O, or [Reset] key. Danfoss A/S © 2022.11 AQ355238304444en-US0301 / 130R0955 | 13...

  • Page 14: Application Examples

    MTTFd correspond- ing to PL c. Implementation in SISTEMA using Danfoss VLT library As an example, use the subsystem "VLT® AutomationDrive EZ FC 321 (Terminal 37)". It is not necessary to edit all the parameters which are set in the library.

  • Page 15: Emergency Stop Of Drive With Sto Using Safety Relay - Category 3, Pl D, Sil2

    (terminal 37) SB emergency stop device from Danfoss VLT library Illustration 3: Safety-related Block Diagram 5.3 Emergency Stop of Drive with STO Using Safety Relay - Category 3, PL d, SIL2 Illustration 4: Installation Example Achieving a Stop Category 0 (EN 60204-1) with Safety Cat. 3/PL "d" (ISO 13849-1) or SIL2 (EN 62061 and IEC...

  • Page 16: Emergency Stop Of Drive With Sto, Safety Relay, And Output Contactor - Category 4, Pl E, Sil3

    Operating Guide Application Examples Implementation of SISTEMA using Danfoss VLT library As an example, use the subsystem "VLT® AutomationDrive EZ FC 321 Safe Torque Off (Terminal 37)". It is not necessary to edit all the parameters which are set in the library.

  • Page 17: Emergency Stop Of Multiple Drives - Category 3, Pl D, Sil2

    This setup can be used if a dual positive switching device is used. Implementation in SISTEMA using Danfoss VLT library As an example, use the block "VLT® AutomationDrive EZ FC 321 (Terminal 37)". It is not necessary to edit all the parameters which are set in the library.
  • Page 18 To fulfill PL d, the MTTFd and DC for the entire safety function has to be calculated. Implementation in SISTEMA using Danfoss VLT library As an example, use the subsystem "VLT® AutomationDrive EZ FC 321 Safe Torque Off (Terminal 37)". It is not necessary to edit all the parameters which are set in the library.
  • Page 19 PFD: 1E-10; 1E-4 for specific variants (Low Demand Mode) Subsytem classification Type A Proof test interval T1 20 years Mission time TM 20 years Reaction time Input to output response time Maximum 20 ms, 60 ms for specific variants Danfoss A/S © 2022.11 AQ355238304444en-US0301 / 130R0955 | 19...
  • Page 20 Bulleted and dashed lists indicate listings of other information where the order of the information is not relevant. • Bolded text indicates highlighting and section headings. • Italicized text indicates the following: Cross-reference. Link. Footnote. Parameter name. Parameter option. Parameter group name. Alarms/warnings. 20 | Danfoss A/S © 2022.11 AQ355238304444en-US0301 / 130R0955...
  • Page 21 Safe Torque Off Operating Guide Appendix • All dimensions in drawings are in metric values (imperial values in brackets). • An asterisk (*) indicates the default setting of a parameter. Danfoss A/S © 2022.11 AQ355238304444en-US0301 / 130R0955 | 21...
  • Page 22 EN 50178....................19 IEC 60204-1..................19,19 IEC 61508-1....................19 Restart prevention................11, 12 IEC 62061....................20 STO function....................11 Symbols......................7 SIL CL2.........................6 SIL2....................6, 12, 17, 19 SISTEMA calculation tool................14 Type code......................5 Standards and directives EN IEC 61800-5-2..................5 22 | Danfoss A/S © 2022.11 AQ355238304444en-US0301/130R0955...
  • Page 23 Safe Torque Off Operating Guide Index Danfoss A/S © 2022.11 AQ355238304444en-US0301/130R0955 | 23...
  • Page 24 Danfoss can accept no responsibility for possible errors in catalogs, brochures, and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to products already on order provided that such alterations can be made without subsequential changes being necessary in specifications already agreed. All trademarks in this material are property of the respective companies.

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