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ABB ACS880 User Manual

Prevention of unexpected start-up (option +q957) multidrives
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User's manual
Prevention of unexpected start-up (option +Q957)
for ACS880 multidrives

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Summary of Contents for ABB ACS880

  • Page 1 Options for ABB drives User’s manual Prevention of unexpected start-up (option +Q957) for ACS880 multidrives...

  • Page 2: List Of Related Manuals

    You can find manuals and other product documents in PDF format on the Internet. See section Document library on the Internet on the inside of the back cover. For manuals not available in the Document library, contact your local ABB representative.
  • Page 3 User’s manual Prevention of unexpected start-up (option +Q957) for ACS880 multidrives Table of contents  2018 ABB Oy. All Rights Reserved. 3AUA0000119894 Rev D EFFECTIVE: 2018-02-02...

  • Page 5: Table Of Contents

    Table of contents List of related manuals ........... 2 1.
  • Page 6 Providing feedback on ABB manuals ........

  • Page 7: Introduction To The Manual

    This chapter describes the manual in short and gives some general information for the reader. The chapter also contains a quick reference for implementing a safety system. Applicability The manual applies to ACS880 multidrives which have the option: Prevention of unexpected start-up (option +Q957). Safety instructions Only a qualified electrician who has appropriate knowledge on functional/machine/process safety is allowed to install, start up and maintain the safety circuit.

  • Page 8: Target Audience

    In the supply and brake units, the XSTO input must not be used for any safety function purposes to ensure personnel safety. The Safe torque off function is supported by any ACS880 inverter or drive firmware. It is not supported by supply or brake firmware.

  • Page 9: Abbreviations

    If you select EN/IEC 62061 or IEC 61511, make a safety plan. See EN/IEC 62061 or IEC 61511. Assess safety: analyze and evaluate risks (estimate SIL/PL) and define risk reduction strategies. Define the safety requirements. Design the safety system. The part of the design made by ABB is described in chapter Option description and instructions on page 11.
  • Page 10 10 Introduction to the manual...

  • Page 11: Option Description And Instructions

    Option description and instructions 11 Option description and instructions Contents this chapter This chapter describes the +Q957 Prevention of unexpected start-up option and instructs how to wire, start up, test, validate, use and maintain it. Overview The Prevention of unexpected start -up (POUS) function disables the control voltage of the power semiconductors of the drive (inverter) output stage.
  • Page 12 12 Option description and instructions Note: Drives with the Emergency stop, stop category 1 function (option +Q952 or +Q964): If the user activates the POUS function during the emergency stop deceleration ramp, it overrides the emergency stop function. This activates the STO function of the drive immediately and the motor coasts to a stop.

  • Page 13: Operation Principle

    Option description and instructions 13 Operation principle Inverter units, Control relays Inverter unit main circuit -T22 24 V -A41 -T11 -TXX XSTO SGND -A65 -Sxx -Pxx Reset (automatic) Alternative 24 V supply with emergency stop options +Q963 and +Q964 Alternative 24 V supply for Safe torque off (depends on the configuration) STO signal to the inverter IGBTs POUS switch (user-defined) POUS indication lamp (user-defined)

  • Page 14: Fault Reaction Function

    The STO function has its own internal fault diagnostics and fault reaction function. Parameter settings Note: ACS880 primary control program controls the inverter unit by default. There are dedicated control boards for the supply and inverter units. The supply unit parameter settings in the ACS880 supply control programs: •...

  • Page 15: Wiring

    Option description and instructions 15 Wiring The operating switch and the indication lamp for the POUS function are not factory- installed. The user must install and wire them to the drive on site. There are double contacts in the POUS switch [Sxx] and double wiring (two-channel connection) between the button and the POUS safety relay [A65].

  • Page 16: Start-Up And Acceptance Test

    16 Option description and instructions Start-up and acceptance test You need the Drive composer PC tool or a control panel to perform the start-up and acceptance test. Initial status: Make sure that the drive is ready for use, that is, you have done the tasks of the drive start-up procedure.
  • Page 17 Option description and instructions 17 Action Drives with R8i inverter modules: Ensure that “STO hardware failure” (5090) is not generated. Switch off the inverter start signals. If a fault message is generated, reset the inverter units. See section POUS indications on page 18.

  • Page 18: Use Of The Safety Function

    If you change any wiring or component after the start up, or restore parameters to their default values: • Use only ABB approved spare parts • Register the change to the change log for the safety circuit •...

  • Page 19: Proof Test Interval

    Option description and instructions 19 Proof test interval  After the operation of the safety function is validated at start-up, the safety function must be maintained by periodic proof testing. In high demand mode of operation, the maximum proof test interval is 20 years. In low demand mode of operation, the maximum proof test interval is 2 or 5 years (high or low demand as defined in IEC 61508, EN/IEC 62061 and EN ISO 13849-1).

  • Page 20: Safety Data

    Safety data Safety data values  Each multidrives delivery is unique. If included in the customer order, ABB calculates the safety data for each POUS circuit of the multidrives delivery, and delivers the data separately to the customer. Safety component types ...

  • Page 21: Relevant Failure Modes

    Option description and instructions 21 Relevant failure modes  Internal failures of safety relays and STO. These failures are included in the PFH value of the function. Fault exclusions  Fault exclusions (not considered in the calculations): • any short and open circuits in the cables of the safety circuit •...

  • Page 22: Competence

    IEC 61508-1 clause 6. The test procedures and report must be documented and signed by this person. Ambient conditions  For the environmental limits for the safety functions and the drive, refer to the hardware manual. Reporting problems and failures related to safety functions  Contact your local ABB representative.

  • Page 23: Related Standards And Directives

    Option description and instructions 23 Related standards and directives Standard Name EN 60204-1:2006 + AC:2010 Safety of machinery – Electrical equipment of machines – Part 1: General IEC 60204-1:2016 requirements IEC 61508-1:2010 Functional safety of electrical/electronic/programmable electronic safety- related systems - Part 1: General requirements. IEC 61508-2:2010 Functional safety of electrical/electronic/programmable electronic safety- related systems - Part 2: Requirements for electrical/electronic/...
  • Page 24 24 Option description and instructions...

  • Page 25: Further Information

    Product and service inquiries Address any inquiries about the product to your local ABB representative, quoting the type designation and serial number of the unit in question. A listing of ABB sales, support and service contacts can be found by navigating to www.abb.com/searchchannels.
  • Page 26 Contact us www.abb.com/drives www.abb.com/drivespartners 3AUA0000119894 Rev D (EN) 2018-02-02...

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