Allen-Bradley PowerFlex 755 User Manual
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Allen-Bradley PowerFlex 755 User Manual

Integrated safety - safe torque off option module
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User Manual
Original Instructions
PowerFlex 755/755T Integrated Safety - Safe Torque Off
Option Module
Catalog Number 20-750-S3

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Summary of Contents for Allen-Bradley PowerFlex 755

  • Page 1 User Manual Original Instructions PowerFlex 755/755T Integrated Safety - Safe Torque Off Option Module Catalog Number 20-750-S3...
  • Page 2 Important User Information Read this document and the documents listed in the additional resources section about installation, configuration, and operation of this equipment before you install, configure, operate, or maintain this product. Users are required to familiarize themselves with installation and wiring instructions in addition to requirements of all applicable codes, laws, and standards.

  • Page 3: Table Of Contents

    Configure Safe Torque Off in the Logix Designer Application ..31 and Operation Add a PowerFlex 755 Drive to the Controller Project..33 Rockwell Automation Publication 750-UM004B-EN-P - October 2018...
  • Page 4 Configure Safe Torque Off in the Logix Designer Application ..54 Add a PowerFlex 755 Drive to the Controller Project..55 Configure an Option Card on a PowerFlex 755 Drive in Integrated Motion on EtherNet/IP Network Applications.
  • Page 5 Table of Contents Configure the Drive with Hardwired Safety Connections ..77 Timing Diagrams ..........78 Chapter 7 Monitoring and Troubleshooting Monitor STO Status .
  • Page 6 Table of Contents Notes: Rockwell Automation Publication 750-UM004B-EN-P - October 2018...

  • Page 7: Summary Of Changes

    Throughout this manual, the PowerFlex 755TL low harmonic drives, PowerFlex 755TR regenerative drives, PowerFlex 755TM drive systems are also referred to as PowerFlex 755T drive products. The PowerFlex 755 drive is used for the examples in this manual. Rockwell Automation Publication 750-UM004B-EN-P - October 2018...

  • Page 8: Terminology

    Preface Terminology Table 1 defines the abbreviations that are used in this manual. Table 1 - Abbreviations and Definitions Abbreviation Full Term Definition 1oo2 One out of Two Refers to the behavioral design of a dual-channel safety system. Classification of the safety-related parts of a control system in respect of their resistance to faults and Category their subsequent behavior in the fault condition, and which is achieved by the structural arrangement of the parts, fault detection, and/or by their reliability (source ISO 13849).

  • Page 9: Product Firmware And Release Notes

    Preface Product Firmware and Product firmware and release notes are available online within the Product Compatibility and Download Center. Release Notes 1. From the Search bar on http://www.ab.com, choose Compatibility and Downloads. 2. Search for your product. 3. On the search results page, find the firmware and release notes for your product.

  • Page 10: Additional Resources

    Provides information on how to use CompactLogix™ 5380 and Compact GuardLogix 5380 publication 5069-UM001 controllers. You can view or download publications at http://www.rockwellautomation.com/global/literature-library/overview.page. To order paper copies of technical documentation, contact your local Allen-Bradley distributor or Rockwell Automation sales representative. Rockwell Automation Publication 750-UM004B-EN-P - October 2018...

  • Page 11: What Is The Integrated Safety - Safe Torque Off Option Module

    Chapter Safety Concept This chapter provides information on safety considerations for the Integrated Safety - Safe Torque Off option module. Topic Page What Is the Integrated Safety - Safe Torque Off Option Module? Compatible Drives Compatible Safety Controllers Safety Application Requirements Safety Certification Functional Proof Tests PFD and PFH Definitions...

  • Page 12: Compatible Drives

    • PowerFlex 755TM drive systems Integrated STO is via the embedded Ethernet port on the drive only. Device Level Ring (DLR) capability is supported for the PowerFlex 755 when a 20-750-ENETR Dual Port EtherNet/IP option module is used in Tap mode.

  • Page 13: Compatible Safety Controllers

    • For PowerFlex 755 drives, AOP version 4.09 (or later) • For PowerFlex 755T drive products, all AOP versions The following Integrated Motion AOPs are needed: • For PowerFlex 755 drives, Integrated Motion AOP version 18.00.00 (or later) • PowerFlex 755T drive products do not support Integrated Motion at this time.

  • Page 14: Hardwired Mode

    GuardLogix Controller Systems Safety Reference Manuals listed in the Additional Resources on page The TÜV Rheinland group has approved the PowerFlex 755 Integrated Safety Safety Certification - Safe Torque Off option module (catalog number 20-750-S3) as suitable for use in hardwired or integrated safety applications: •...

  • Page 15: Stop Category Definitions

    Safety Concept Chapter 1 IMPORTANT Only qualified, authorized personnel that are trained and experienced in functional safety can plan, implement, and apply functional safety systems. ATTENTION: When designing your system, consider how personnel exit the machine if the door locks while they are in the machine. Additional safeguard devices can be required for your specific application.

  • Page 16: Functional Proof Tests

    Chapter 1 Safety Concept See the ISO 13849-1, IEC 61508, and EN 62061 standards for complete information on requirements for PL and SIL determination. Functional Proof Tests The functional safety standards require that functional proof tests be performed on the equipment that is used in the system. Proof tests are performed at user-defined intervals and are dependent upon PFD and PFH values.

  • Page 17: Pfd And Pfh Data

    EN 61508 and show worst-case values. This table provides data for a 20-year proof test interval and demonstrates the worst-case effect of various configuration changes on the data. Table 2 - PFD and PFH for PowerFlex 755 Drives PowerFlex 755 Drives PowerFlex 755 Drives...

  • Page 18: Considerations For Safety Ratings

    Considerations for Safety The achievable safety rating of an application that uses the Integrated Safety - Safe Torque Off option module that is installed in PowerFlex 755 drives Ratings (firmware revision 13 or later), and PowerFlex 755T drive products are dependent upon many factors, drive options, and the type of motor.
  • Page 19 Chapter Installation This chapter provides installation, jumper settings, and wiring for the Integrated Safety - Safe Torque Off option module. Topic Page Remove Power from the Drive System Access the Control Pod Set the Safety Jumper Install the Safety Option Module ATTENTION: The following information is a guide for proper installation.

  • Page 20: Remove Power From The Drive System

    Chapter 2 Installation Remove Power from the Before performing any work on the drive, remove all power to the system. Drive System ATTENTION: • Electrical Shock Hazard. Verify that all sources of AC and DC power are de- energized and locked out or tagged out in accordance with the requirements of ANSI/NFPA 70E, Part II.

  • Page 21: Set The Safety Jumper

    SAFETY jumper must be removed or a Safety Jumper In Fault (F213) occurs. IMPORTANT PowerFlex 755 drives (frames 8…10) control boards do not have a SAFETY jumper. If the Integrated Safety - Safe Torque Off option module is installed, the control board hardware ENABLE jumper must be installed.

  • Page 22: Install The Safety Option Module

    Chapter 2 Installation Figure 2 - PowerFlex 755T Drive Products Jumper Locations (all frame sizes) SAFETY Jumper (jumper is removed) PowerFlex 755T Drive Products Hardware ENABLE Jumper (jumper in place) Install the Safety Option To install the Integrated Safety - Safe Torque Off option module in a drive port, follow these steps: Module 1.
  • Page 23 Installation Chapter 2 Figure 3 - Tighten Screws PowerFlex 755 Drives Frames 1…7 Shown Rockwell Automation Publication 750-UM004B-EN-P - October 2018...
  • Page 24 Chapter 2 Installation Notes: Rockwell Automation Publication 750-UM004B-EN-P - October 2018...

  • Page 25: Description Of Operation

    Chapter Configuration This chapter provides information on how to configure the Integrated Safety - Safe Torque Off option module. Topic Page Description of Operation Out-of-Box State Description of Operation Safe Torque Off (STO) disables the power transistors so that the probability of torque producing switching is sufficiently low for SIL 3.

  • Page 26: Out-Of-Box State

    Chapter 3 Configuration IMPORTANT The Integrated Safety - Safe Torque Off option module does not remove dangerous voltages at the drive output. Before performing any electrical work on the drive or motor, turn off the input power to the drive, and follow all safety procedures.
  • Page 27 Reset the Drive by Using the Logix Designer Application After the integrated safety connection configuration is applied to the PowerFlex 755 drive at least once, you can follow these steps to restore your PowerFlex 755 drive to the out-of-box state while online.
  • Page 28 Chapter 3 Configuration 5. Click the Safety tab. 6. Click Reset Ownership. 7. Click the Connection tab. 8. Uncheck Inhibit Module. 9. Click Apply. 10. Click OK. Rockwell Automation Publication 750-UM004B-EN-P - October 2018...

  • Page 29: Description Of Integrated Operation

    • You must add the PowerFlex® drive to the Ethernet network connection in the safety controller I/O tree. The PowerFlex 755 drives and PowerFlex 755T drive product STO function reaction time is 15 ms maximum. Reaction time is the delay between the time when the drive STO function receives the STO request, and when power that produces the motion is removed from the motor.

  • Page 30: Safe Torque Off Assembly Tags

    Chapter 4 Standard I/O – Network STO Programming and Operation Table 5 - Safe Torque Off Network Specifications Attribute Value Safety connection RPI, min 6 ms Input assembly connections Output assembly connections Safe Torque Off Assembly In Network mode, the safety controller controls the integrated STO function through the SO.SafeTorqueOff tag in the safety output assembly: Tags •...

  • Page 31: Configure Safe Torque Off In The Logix Designer Application

    Configure Safe Torque Off in This chapter provides instructions for how to add and configure an Integrated Safety - Safe Torque Off option module in a PowerFlex 755 drive or PowerFlex the Logix Designer 755T drive product in an existing project in the Logix Designer application.
  • Page 32 Chapter 4 Standard I/O – Network STO Programming and Operation To set up your drive with the 20-750-S3 option card, you must configure the following attributes, in addition to the drive’s IP address, revision, ratings, and power structure settings: Port 4, 5, or 6 Electronic Keying Indicates that all keying attributes must match to establish communication.

  • Page 33: Add A Powerflex 755 Drive To The Controller Project

    3. Follow the appropriate procedure to add and configure an option card and drive: • Add an Option Card to a PowerFlex 755 Drive in I/O Mode on page 34 • Add an Option Card to a PowerFlex 755T Drive Product in I/O...

  • Page 34: I/O Mode

    Chapter 4 Standard I/O – Network STO Programming and Operation Add an Option Card to a PowerFlex 755 Drive in I/O Mode 1. On the New Module dialog box, name your drive. 2. Type the IP Address. 3. Choose the Drive tab.
  • Page 35 Standard I/O – Network STO Programming and Operation Chapter 4 5. Expand PF750 peripherals list, select card, and click Create. 6. Choose port and Electronic Keying for card and click OK. Rockwell Automation Publication 750-UM004B-EN-P - October 2018...
  • Page 36 Chapter 4 Standard I/O – Network STO Programming and Operation 7. Choose General Tab and click change to open Module Definition. 8. Choose the Connection type. The 20-750-S3 card appears in the Safety Type field. Rockwell Automation Publication 750-UM004B-EN-P - October 2018...

  • Page 37: I/O Mode

    Standard I/O – Network STO Programming and Operation Chapter 4 9. Configure the drive's properties: a. Revision b. Electronic Keying c. Drive Ratings d. Rating Options e. Special Types 10. Click OK to return to the New Module or Module Properties dialog box.
  • Page 38 Chapter 4 Standard I/O – Network STO Programming and Operation 4. Choose the connection type. 5. From the Device Definition Dialog box, choose the Peripherals page and use the Add new peripheral pull-down menu to choose the 20-750- S3 card. Rockwell Automation Publication 750-UM004B-EN-P - October 2018...

  • Page 39: Generate The Safety Network Number (Snn)

    Standard I/O – Network STO Programming and Operation Chapter 4 6. Expand the card entry on the Peripherals page to change the port, if desired, and to choose Electronic Keying method. 7. Click OK to return to the New Module window with drive details. 8.
  • Page 40 Chapter 4 Standard I/O – Network STO Programming and Operation IMPORTANT If you assign an SNN manually, make sure that the system expansion does not result in duplication of SNN and node address combinations. A warning appears if your project contains duplicate SNN and node address combinations.

  • Page 41: Configure Safety Connections

    Standard I/O – Network STO Programming and Operation Chapter 4 Configure Safety Connections To configure the safety tab, follow these steps. 1. Click the Safety tab in the drive Module Properties dialog box. 2. Adjust the Safety Input Requested Packet Interval (RPI) as desired for your safety system.
  • Page 42 Chapter 4 Standard I/O – Network STO Programming and Operation 4. Configure the advanced settings as desired. Advanced Reaction Connection Time Description Limit Configuration Settings The RPI specifies the period that data updates over a connection. For example, an input module produces data at the RPI that you assign.

  • Page 43: Safety Configuration Signature And Ownership

    Module Properties dialog box) • GuardLogix slot number • GuardLogix safety network number • Path from the GuardLogix safety controller to the PowerFlex 755 drive or PowerFlex 755T drive product • Configuration signature (displayed on the Safety tab of the drive’s...

  • Page 44: Safe Torque Off - Stop Category 0 Example Program

    Chapter 4 Standard I/O – Network STO Programming and Operation Safe Torque Off – Stop This safety task code is an example for a category 0 stop. The STO output is energized if the safety interlocks are satisfied, there are no faults, there is a valid Category 0 Example Program connection, and there is a falling edge on the ‘Safety_Reset’...

  • Page 45: Safe Torque Off - Stop Category 1 Example Program

    Standard I/O – Network STO Programming and Operation Chapter 4 Safe Torque Off – Stop This safety task code is an example for a category 1 stop. The STO output is energized if the safety interlocks are satisfied, there are no faults, there is a valid Category 1 Example Program connection, and there is a falling edge on the ‘Safety_Reset’...

  • Page 46: Falling Edge Reset

    Chapter 4 Standard I/O – Network STO Programming and Operation Falling Edge Reset ISO 13849-1 stipulates that instruction reset functions must occur on falling edge signals. To comply with this requirement, a One Shot Falling (OSF) instruction is used on the reset rung. Then, the OSF instruction Output Bit tag is used as the reset bit for the STO output or enable rungs.

  • Page 47: Safe Torque Off Fault Reset

    Drive Start Inhibits is parameter 933 in PowerFlex 755 drives and parameter 603 in PowerFlex 755T drive products. Drive Fault Status B is parameter 953 in PowerFlex 755 drives and parameter 462 in PowerFlex 755T drive products. Rockwell Automation Publication 750-UM004B-EN-P - October 2018...

  • Page 48: Understand Integrated Safety Drive Replacement

    State on page 26 for more information. Replacing an entire PowerFlex 755 drive or PowerFlex 755T drive product on an integrated safety network is more involved than replacing standard devices because of the safety network number (SNN). The device number and SNN is the safety Device ID of the device.
  • Page 49 Standard I/O – Network STO Programming and Operation Chapter 4 Figure 5 - Safety I/O Replacement Options Configure Only When No Safety Signature Exists This setting instructs the GuardLogix controller to configure a safety device only when the safety task does not have a safety task signature, and the replacement device is in out-of-box condition.
  • Page 50 Chapter 4 Standard I/O – Network STO Programming and Operation Configure Always The GuardLogix controller always attempts to configure a replacement Safety I/O device if the device is in an out-of-box condition, meaning that a safety network number does not exist in the replacement safety device, and the node number and I/O device keying matches the configuration of the controller.

  • Page 51: Requirements

    Chapter Integrated Motion – Network STO Programming and Operation This chapter provides information for network installation and operation of the Integrated Safety - Safe Torque Off option module when used with Integrated Motion. Topic Page Requirements Description of Operation Configure Safe Torque Off in the Logix Designer Application Safe Torque Off –...

  • Page 52: Safe Torque Off Assembly Tags

    • You must add the PowerFlex drive to the Ethernet network connection in the safety controller I/O tree. The PowerFlex 755 drive STO function response time is less than 15 ms. Response time for the drive is the delay between the time the drive STO command receives the CIP Safety™...
  • Page 53 Integrated Motion – Network STO Programming and Operation Chapter 5 Table 8 - Integrated STO Specifications Attribute Logix Designer Tag Name Type Description [bit] The ConnectionStatus data type contains (1) (2) SI.ConnectionStatus DINT RunMode and ConnectionFault status bits. SI.RunMode BOOL Table 9 for descriptions of the combinations of the RunMode and...

  • Page 54: Configure Safe Torque Off In The Logix Designer Application

    Configure Safe Torque Off in This chapter provides instructions for how to add and configure an Integrated Safety - Safe Torque Off option module in a PowerFlex 755 drive in an existing the Logix Designer project in the Logix Designer application. This chapter is specific to safety and Application does not cover all aspects of drive configuration.

  • Page 55: Add A Powerflex 755 Drive To The Controller Project

    2. Select a PowerFlex 755 drive for Integrated Motion on EtherNet/IP networks (selection catalog number ends in –CM-S3 for drives with network STO option). 3. Configure an Option Card on a PowerFlex 755 Drive in Integrated Motion on EtherNet/IP Network Applications as described in the following section.

  • Page 56: Configure An Option Card On A Powerflex 755 Drive In Integrated Motion On Ethernet/Ip Network Applications

    Chapter 5 Integrated Motion – Network STO Programming and Operation Configure an Option Card on a PowerFlex 755 Drive in Integrated Motion on EtherNet/IP Network Applications 1. On the New Module dialog box, name the drive. 2. Type the IP Address.

  • Page 57: Generate The Safety Network Number (Snn)

    Integrated Motion – Network STO Programming and Operation Chapter 5 6. Click Safety Definition to configure 20-750-S3 revision and Electronic Keying. 7. Click OK to close the Safety Definition dialog box. 8. Click OK to close the Module Definition dialog box. Note that the Safety Network Number (SNN) is on the General page and that there is a Safety page.

  • Page 58: Configure Safety Connections

    Chapter 5 Integrated Motion – Network STO Programming and Operation 3. Click Generate. 4. Click OK. Configure Safety Connections To configure the safety tab, follow these steps. 1. Click the Safety tab in the drive Module Properties. 2. Adjust the Safety Input Requested Packet Interval (RPI) as desired for your safety system.
  • Page 59 Integrated Motion – Network STO Programming and Operation Chapter 5 3. Click Advanced… for more advanced settings. 4. Configure the advanced settings as desired. Advanced Reaction Connection Time Description Limit Configuration Settings The RPI specifies the period that data updates over a connection. For example, an input module produces data at the RPI that you assign.

  • Page 60: Safety Configuration Signature And Ownership

    Safety Configuration Signature and Ownership The connection between the controller and the drive is based on the following criteria: • Drive catalog number must be for PowerFlex 755 drives • Drive Safety Network Number (SNN) (displayed in the drive’s Module Properties dialog box.) •...

  • Page 61: Safe Torque Off - Stop Category 0 Example Program

    Integrated Motion – Network STO Programming and Operation Chapter 5 Safe Torque Off – Stop This safety task code is an example for a category 0 stop. The STO output is energized if the safety interlocks are satisfied, there are no faults, there is a valid Category 0 Example Program connection, and there is a falling edge on the ‘Safety_Reset’...

  • Page 62: Safe Torque Off - Stop Category 1 Example Program

    Chapter 5 Integrated Motion – Network STO Programming and Operation Safe Torque Off – Stop This safety task code is an example for a category 1 stop. The STO output is energized if the safety interlocks are satisfied, there are no faults, there is a valid Category 1 Example Program connection, and there is a falling edge on the ‘Safety_Reset’...

  • Page 63: Safety Tags In Standard Routines

    Integrated Motion – Network STO Programming and Operation Chapter 5 instruction is used on the reset rung. Then, the OSF instruction Output Bit tag is used as the reset bit for the STO output or enable rungs. Safety Tags in Standard Routines Tags that are classified as safety tags are either controller-scoped or program- scoped.

  • Page 64: Sto Fault Reset

    To clear the STO Fault condition, a transition from logic 0 to 1 of the SO.Reset tag is required. If the PowerFlex 755 drive safety controller detects a fault, the input assembly tag SI.SafetyFault is set to 1. To reset an Axis.SafetyFault, a Motion Axis Fault Reset (MAFR) command must be issued.

  • Page 65: Troubleshoot The Safe Torque Off Function

    Out-of-Box State on page Replacing a PowerFlex 755 drive that is on an integrated safety network is more complicated than replacing standard devices because of the safety network number (SNN). The device number and SNN make up the safety device’s DeviceID.

  • Page 66: Replace An Integrated Safety Drive In A Guardlogix System

    Chapter 5 Integrated Motion – Network STO Programming and Operation Replace an Integrated Safety Drive in a GuardLogix System When you replace an integrated safety drive, the replacement device must be configured properly and the replacement drives operation be user-verified. ATTENTION: During drive replacement or functional test, the safety of the system must not rely on any portion of the affected drive.

  • Page 67: Motion Direct Commands In Motion Control Systems

    ATTENTION: Enable the Configure Always feature only if the entire integrated safety control system is not being relied on to maintain SIL 3 behavior during the replacement and functional testing of a PowerFlex 755 drive. If other parts of the integrated safety control system are being relied upon to maintain SIL 3, make sure that the controller’s Configure Always feature is...
  • Page 68 Understand STO Bypass When Using Motion Direct Commands If a Safety-only connection between the GuardLogix safety controller and the PowerFlex 755 drive was established at least once after the drive was received from the factory, the drive does not allow motion while the safety controller is in Program mode by default.
  • Page 69 Logix Designer Application Warning Messages When the controller is in Run mode, executing safety functions, the PowerFlex 755 drive follows the commands that it receives from the safety controller. The controller reports Safety State = Running and Axis State =...
  • Page 70 Chapter 5 Integrated Motion – Network STO Programming and Operation When you issue a motion direct command to an axis to produce torque in Program mode, for example MSO or MDS, with the safety connection present to the drive, a warning message is presented before the motion direct command is executed, as shown in Figure Figure 10 - STO Bypass Prompt When the Safety Controller is in Program Mode...
  • Page 71 Integrated Motion – Network STO Programming and Operation Chapter 5 Figure 11 - Safety State Indications After Controller Transitions to Program Mode (MDC executing) IMPORTANT The persistent warning message text Safe Torque Off bypassed appears when a motion direct command is executed. The warning message persists even after the dialog is closed and reopened as long as the integrated safety drive is in STO Bypass mode.
  • Page 72 Chapter 5 Integrated Motion – Network STO Programming and Operation Torque Permitted in a Multi-workstation Environment The warning in Figure 12 is displayed to notify a second user working in a multi-workstation environment that the first user has placed the integrated safety drive in the STO state and that the current action is about to bypass the STO state and permit torque.
  • Page 73 Integrated Motion – Network STO Programming and Operation Chapter 5 Figure 15 - Axis and Safe State Indications on the Motion Console Dialog Box Functional Safety Considerations ATTENTION: Before maintenance work can be performed in Program mode, the developer of the application must consider the implications of allowing motion through motion direct commands and should consider developing logic for runtime maintenance operations to meet the requirements of machine safety operating procedures.
  • Page 74 Chapter 5 Integrated Motion – Network STO Programming and Operation Notes: Rockwell Automation Publication 750-UM004B-EN-P - October 2018...

  • Page 75: Wiring

    Chapter Hardwired STO Wiring and Operation This chapter provides information for hardwired installation and operation of the Integrated Safety - Safe Torque Off option module. Topic Page Wiring Description of Hardwired Operation Selection of Hardwired Operation Configure the Drive with Hardwired Safety Connections Timing Diagrams Wiring Observe these wiring guidelines when installing the safety option module:...

  • Page 76: Cabling

    Chapter 6 Hardwired STO Wiring and Operation IMPORTANT The National Electrical Code and local electrical codes take precedence over the values and methods provided. Cabling • Safety input wiring must be protected against external damage by cable ducts, conduit, armored cable, or other means. •...

  • Page 77: Description Of Hardwired Operation

    To add the 20-750-S3 peripheral device, and configure the safety connection, see these sections: Hardwired Safety • Add an Option Card to a PowerFlex 755 Drive in I/O Mode on page 34 Connections • Add an Option Card to a PowerFlex 755T Drive Product in I/O Mode...

  • Page 78: Timing Diagrams

    Drive Start Inhibits is parameter 933 in PowerFlex 755 drives and parameter 603 in PowerFlex 755T drive products. Drive Fault Status B is parameter 953 in PowerFlex 755 drives and parameter 462 in PowerFlex 755T drive products. Rockwell Automation Publication 750-UM004B-EN-P - October 2018...
  • Page 79 Drive Start Inhibits is parameter 933 in PowerFlex 755 drives and parameter 603 in PowerFlex 755T drive products. Drive Fault Status B is parameter 953 in PowerFlex 755 drives and parameter 462 in PowerFlex 755T drive products. Rockwell Automation Publication 750-UM004B-EN-P - October 2018...
  • Page 80 Drive Start Inhibits is parameter 933 in PowerFlex 755 drives and parameter 603 in PowerFlex 755T drive products. Drive Fault Status B is parameter 953 in PowerFlex 755 drives and parameter 462 in PowerFlex 755T drive products. ATTENTION: The STO fault is detected upon demand of the STO function.

  • Page 81: Monitor Sto Status

    Chapter Monitoring and Troubleshooting This chapter provides information for monitoring and troubleshooting the Integrated Safety - Safe Torque Off option module. Topic Page Monitor STO Status Monitor STO With a HIM or Software Monitor STO Status The option module has three status indicators to provide status of the module, safety network, and motion output of the drive.

  • Page 82: Network Status Indicator (Ds2)

    Chapter 7 Monitoring and Troubleshooting Network Status Indicator (DS2) Table 14 provides information for the network status. Table 14 - Network Status LED (DS2) Status State Problem Indicator Not powered/not online Device is not online. No connections Flashing green Device is online but has no connections in the established state. Connected Green Device is online and connections in the established state.

  • Page 83: Monitor Sto With A Him Or Software

    Monitoring and Troubleshooting Chapter 7 Monitor STO With a HIM or This section describes safety-related status information available for viewing with a HIM, drive module properties in the Logix Designer application, or Software Connected Components Workbench™ software. Fault Messages on HIM, Drive Module, and Connected Components Workbench Software The only message displayed for any fault originating from the option card is ‘SAFETY BRD FAULT’...
  • Page 84 Chapter 7 Monitoring and Troubleshooting For diagnostic purposes, you can also view status attributes by accessing these Host Config parameters (note: these are different than the ‘Device Config’ parameters) from a HIM, Connected Components Workbench software, or the Logix Designer application: •...
  • Page 85 Monitoring and Troubleshooting Chapter 7 Table 20 - Safety Status [P4] Display Text Description Safety Fault Indicates the existence of a safety fault 0 = no fault 1 = faulted Safety Reset A transition from 0 to 1 resets the safety function. Restart Req Indicates whether a manual restart is required following a stop function, 0 = restart not required...

  • Page 86: Safety Supervisor State

    Chapter 7 Monitoring and Troubleshooting Safety Supervisor State The Safety Supervisor State provides information on the state of the safety connection and the mode of operation. It can be read in the user's Logix program via the MSG instruction. Table 22 - Safety Supervisor State: MSG Parameter Value Description...

  • Page 87: Integrated Safety - Safe Torque Off Option Module

    Appendix Specifications, Certifications, and CE Conformity This appendix provides general specifications for the Integrated Safety - Safe Torque Off option module. Topic Page Integrated Safety - Safe Torque Off Option Module Specifications Environmental Specifications Certifications Integrated Safety - Safe These specifications apply to the Integrated Safety - Safe Torque Off option module.

  • Page 88: Environmental Specifications

    For detailed information on environmental, pollution degree, and drive enclosure rating specifications, see the technical data publication for your drive. • PowerFlex 755 AC Drives Technical Data, publication 750-TD001 • PowerFlex 750-Series Products with TotalFORCE™ Control Technical...

  • Page 89: Certifications

    EN IEC 62061; Up to Performance Level PLe and Category 3, according to EN ISO 13849-1; When used as described in this PowerFlex 755 Integrated Safety - Safe Torque Off User Manual, publication 750-UM004. (1) See the Product Certification link at http://www.rockwellautomation.com/global/certification/overview.page...
  • Page 90 Appendix A Specifications, Certifications, and CE Conformity Notes: Rockwell Automation Publication 750-UM004B-EN-P - October 2018...

  • Page 91: Installation Considerations

    Appendix STO Option Module Replacement Considerations This appendix provides a comparison of the differences between the Safe Torque Off option module (catalog number 20-750-S) and the new Integrated Safety - Safe Torque Off option module (catalog number 20-750-S3). Topic Page Installation Considerations Wiring Installation Considerations...

  • Page 92: Wiring

    Appendix B STO Option Module Replacement Considerations Wiring The wiring and terminal blocks for the option modules are different. Safe Torque Off Option Module This section describes the terminal block and power supply for the Safe Torque Off option module. Table 26 - TB2 Terminal Designation Terminal Name Description...

  • Page 93: Parameters And Settings In A Linear List

    Appendix Parameter Data This appendix provides a description of the device config parameters and host config parameters. Parameters and Settings in a This section lists the configurable parameters and their valid settings in numerical order. Linear List Device Config Parameters These parameters are part of the device configuration parameters.
  • Page 94 Appendix C Parameter Data Table 28 - Device Config Parameters (continued) Display Name Values Description Data Type Full Name Description Extended Status “Self Test” (0) A self test is in progress. USINT Detailed description “FW Update” (1) A firmware update is in progress. of the module status based on Identity “IO Faulted”...

  • Page 95: Host Config Parameters

    Parameter Data Appendix C Table 28 - Device Config Parameters (continued) Display Name Values Description Data Type Full Name Description Safety In Values “In0 Value” (0) Safety Input 0 Value BYTE Current value of the 0 = Off safety inputs. 1 = On “In1 Value”...
  • Page 96 Appendix C Parameter Data Table 29 - Host Config Parameters (continued) Display Name Values Full Name Description Safety State USINT Provides information on the state of the safety connection and the mode of operation. “Testing” (1) – The safety option module is in self-test “Idle”...

  • Page 97: Index

    STO state reset 64 GuardLogix 5570 13 IP address 34 GuardLogix 5580 13 jumper diagnostics 84 locations documentation Powerflex 755 drives 21 additional resources 10 PowerFlex 755T drive products 22 drive replacement settings 19 integrated safety 48 DS1 81 DS2 81...
  • Page 98 95 task signature 49 PFD 16 SAFETY BRD FAULT 83 PFD and PFH safety only connection 32 PowerFlex 755 drives 17 shielded cable 76 PowerFlex 755T drive products 17 SI.ConnectionStatus tags 30 pollution degree 88 SI.Status tags 30 power supply...
  • Page 99 Index status attributes 84 indicators 81 LEDs module status (DS1) 81 motion output status (DS3) 82 network status (DS2) 82 fault condition 47 reset 47 fault messages 83 Circuit Err(3) 83 Discrepancy(102) 83 Mode Conflict(104) 83 Stuck High(5) 83 Stuck Low(4) 83 fault type 83 function response time 29 stop category...
  • Page 100 Index Notes: Rockwell Automation Publication 750-UM004B-EN-P - October 2018...
  • Page 102 How Are We Doing? form at http://literature.rockwellautomation.com/idc/groups/literature/documents/du/ra-du002_-en-e.pdf. Rockwell Automation maintains current product environmental information on its website at http://www.rockwellautomation.com/rockwellautomation/about-us/sustainability-ethics/product-environmental-compliance.page. Allen-Bradley, Connected Components Workbench, CompactLogix, ControlLogix, GuardLogix, PowerFlex, Rockwell Automation, Rockwell Software, Studio 5000 Logix Designer, and TotalFORCE are trademarks of Rockwell Automation, Inc.

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