SEW-Eurodrive DRC Manual
  1. Manuals
  2. Brands
  3. SEW-Eurodrive Manuals
  4. Engine
  5. DRC
  6. Manual
SEW-Eurodrive DRC Manual

SEW-Eurodrive DRC Manual

Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
Drive Technology \ Drive Automation \ System Integration \ Services
Manual
Electronic Motor
DRC
Functional Safety
Edition 10/2013
20186541 / EN

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the DRC and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for SEW-Eurodrive DRC

Summary of Contents for SEW-Eurodrive DRC

  • Page 1 Drive Technology \ Drive Automation \ System Integration \ Services Manual Electronic Motor Functional Safety Edition 10/2013 20186541 / EN...
  • Page 2 SEW-EURODRIVE—Driving the world...

  • Page 3: Table Of Contents

    Unit variants with optional standard brake ..........18 Connection variants .................. 20 Connection of an external safety relay for STO ........25 Connection of an external safety controller for STO ......... 29 Index........................33 Manual – Functional Safety – DRC Electronic Motor...

  • Page 4: General Information

    The symbols used either indicate a general hazard or a specific hazard. This is the formal structure of a safety note for a specific section: SIGNAL WORD! Type and source of danger. Possible consequence(s) if disregarded. • Measure(s) to prevent the danger. Manual – Functional Safety – DRC Electronic Motor...

  • Page 5: Rights To Claim Under Warranty

    You must comply with the information contained in this documentation to ensure safe operation and to achieve the specified product characteristics and performance fea- tures. SEW-EURODRIVE assumes no liability for injury to persons or damage to equip- ment or property resulting from non-observance of these operating instructions. In such cases, any liability for defects is excluded.

  • Page 6: Integrated Safety Technology

    This was certified by TÜV Nord. Copies of the TÜV certificate and the corresponding re- port are available from SEW-EURODRIVE on request. Safe condition For safety-related operation of DRC drive units, safe torque off is defined as safe con- dition (see STO safety function). The underlying safety concept is based on this defini- tion.
  • Page 7 Integrated safety technology Safety concept 2.2.1 Schematic representation "Safety concept for DRC" The following figure shows a schematic representation of the safety concept for the DRC drive unit: Safety μC 2463070859 Safety controller/safety relay external Connection "STO+" Connection "STO-" Motor phase Motor Manual –...

  • Page 8: Safety Functions

    The STO input must be disabled by a suitable external safety controller / safety relay. The following figure shows the STO function: 2463228171 Velocity Time Time at which STO is triggered Disconnection range Manual – Functional Safety – DRC Electronic Motor...
  • Page 9 Time Point of time when the brake ramp is initiated Point of time when STO is triggered ∆t Time between initiating the brake ramp and STO Safe time delay range Disconnection range Manual – Functional Safety – DRC Electronic Motor...

  • Page 10: Restrictions

    Additional safety measures might have to be implemented (e.g. safety brake system). → The DRC drive unit cannot be used without an additional brake system for appli- cation-specific safety functions that require active deceleration (braking) of the dan- gerous movement.

  • Page 11: Safety Conditions

    Approved units Safety conditions The requirement for safe operation is that the safety functions of the DRC drive unit are properly integrated into an application-specific higher-level safety function. A sys- tem/machine-specific risk assessment must be carried out through the system/machine manufacturer and taken into account for the use of the drive system with DRC drive units.

  • Page 12: Installation Requirements

    • Power lines and STO control lines have to be routed in separate cables. • The length of the cable from the safety controller to the DRC drive unit must not ex- ceed 100 m. • The wiring technology used must comply with EN 60204-1.
  • Page 13 • Do not use the 24 V output for safety-related applications with DRC drive units. • You may only jumper the STO input with 24 V when the DRC drive unit is not used to fulfill any safety functions. •...

  • Page 14: External Safety Controller Requirements

    SIL 3 according to EN 61508 • The wiring of the safety controller must be suitable for the required safety class, (see manufacturer documentation). The STO input of the DRC drive unit requires 2-pole disconnection (sourcing/sinking). • The values specified for the safety controller must be strictly adhered to when de- signing the circuit.
  • Page 15 Safety conditions External safety controller requirements • Note the following for two-pole disconnection of the DRC drive unit with tested, safe outputs: – When disconnected, the switch-on test pulses may never occur at the plus and minus output at the same time.

  • Page 16: Startup Requirements

    Operational requirements • Operation is only allowed within the limits specified in the data sheets. This principle applies to the external safety controller as well as to the DRC drive unit and approved options. • The built-in diagnostic function is limited in case of a permanently enabled or perma- nently disabled STO input.

  • Page 17: Technical Data

    Technical data Technical data The table below shows the technical data for the DRC drive unit relating to the integrated safety technology. The technical data and approvals in the respective DRC operating in- structions must be observed in addition. Technical data of the STO input Min.

  • Page 18: Appendix

    Appendix Unit variants with optional standard brake The standard brake, which is optionally integrated in DRC drive units, is not safety-re- lated. It is not part of the safety functions described in chapter "Safety functions". We recommend activation with SS1 (c); the standard brake is applied when the speed is 0.
  • Page 19 Activating the STO function during the execution of the ramp aborts the controlled ramp- down: Possible reasons for premature activation of STO: – Deceleration time ∆t too short – Extension of the deceleration ramp due to current limit, e.g. load too high Manual – Functional Safety – DRC Electronic Motor...

  • Page 20: Connection Variants

    The following figure shows an example of the terminal positions for safe torque off (STO) of the DRC drive unit: 4749325835 5.2.2 Assignment of the terminals for safe torque off (STO) The following figure shows the terminal assignment for safe torque off (STO) of the DRC drive unit: Assignment Name Color...
  • Page 21 X5502: STO Orange Fixed 3 (left) X5503: STO Orange Fixed 3 (right) X5502 X5503 27021600262348299 INFORMATION For information about looping STO through, refer to chapter "Connecting an external safety relay for STO". Manual – Functional Safety – DRC Electronic Motor...
  • Page 22 Do not use the 24 V output (pins 1 and 3) for safety-related applications with DRC drive units. • You may only jumper the STO connection with 24 V when the DRC drive unit is not used to fulfill any safety functions. The following table shows information about this connection:...
  • Page 23 The following table shows the conductor assignment of the cable with the following part cables with open number: 1 812 497 6 and 1 814 769 0 Signal name Core color/designation STO − Black / 1 STO + Black / 2 Manual – Functional Safety – DRC Electronic Motor...
  • Page 24 – 145C-flex 2 × 0.75 mm HELU- ® Variable KABEL CE / UL: DC 60 V MULTI- ® SPEED – 1 814 740 2 M12, 5-pole, M12, 5-pole, 500-C-PUR A-coded A-coded UL/CSA Manual – Functional Safety – DRC Electronic Motor...

  • Page 25: Connection Of An External Safety Relay For Sto

    (see EN ISO 13849-2) and the installation has to be designed ac- cording to the required safety class. The DRC drive unit does not detect short circuits or interference voltage in the supply line. SEW-EURODRIVE therefore recommends to connect only STO signals to the STO input using a two-core cable, as shown in the figure.
  • Page 26 12 STO ̶ 1 STO + IN 2 STO ̶ 11 STO + OUT 12 STO ̶ 2468651531 [1] Installation space [2] Safety relay [3] DRC drive unit [4] Connection terminals for STO Manual – Functional Safety – DRC Electronic Motor...
  • Page 27 (see EN ISO 13849-2) and the installation has to be designed ac- cording to the required safety class. The DRC drive unit does not detect short circuits or interference voltage in the supply line. SEW-EURODRIVE therefore recommends to connect only STO signals to the STO input using a two-core cable, as shown in the figure.
  • Page 28 5.3.5 STO signal for group disconnection Requirements For group drives, the STO signal for several DRC drive units can be provided by a single safety relay. The following requirements must be met: • For EMC reasons, the maximum cable length is limited to max. 100 m. Other instruc- tions published by the manufacturer on the use of safety relays (for specific applica- tions) must also be observed.

  • Page 29: Connection Of An External Safety Controller For Sto

    (see EN ISO 13849-2) and the installation has to be designed ac- cording to the required safety class. The DRC drive unit does not detect short circuits or interference voltage in the supply line. SEW-EURODRIVE therefore recommends to connect only STO signals to the STO input using a two-core cable, as shown in the figure.
  • Page 30 12 STO ̶ 1 STO + IN 2 STO ̶ 11 STO + OUT 12 STO ̶ 2808079627 [1] Installation space [2] Safety controller [3] DRC drive unit [4] Connection terminals for STO Manual – Functional Safety – DRC Electronic Motor...
  • Page 31 (see EN ISO 13849-2) and the installation has to be designed ac- cording to the required safety class. The DRC drive unit does not detect short circuits or interference voltage in the supply line. SEW-EURODRIVE therefore recommends to connect only STO signals to the STO input using a two-core cable, as shown in the figure.
  • Page 32 5.4.5 STO signal for group disconnection Requirements For group drives, the STO signal for several DRC drive units can be provided by a single safety controller. The following requirements must be met: • For EMC reasons, the maximum cable length is limited to max. 100 m. Other instruc- tions published by the manufacturer on the use of the safety controller (for the re- spective application) must also be observed.

  • Page 33: Index

    Group disconnection Safety notes Connection via M12 plug connector.....27, 31 Design of section-related ........4 Connection via terminals......26, 30 Design of the embedded........5 STO signal for group disconnection.....28, 32 Designation in the documentation .......4 Manual – Functional Safety – DRC Electronic Motor...
  • Page 34 Verification of safety functions .......16 STO signal for group disconnection ....28, 32 STO (safe torque off) ..........8 Switching capacity of the safety relay ....14 Wiring specifications ..........12 Wiring technology ..........12 Technical data Safety characteristics.........17 STO input............17 Manual – Functional Safety – DRC Electronic Motor...
  • Page 36 SEW-EURODRIVE—Driving the world SEW-EURODRIVE Driving the world SEW-EURODRIVE GmbH & Co KG P.O. Box 3023 76642 BRUCHSAL GERMANY Phone +49 7251 75-0 Fax +49 7251 75-1970 sew@sew-eurodrive.com www.sew-eurodrive.com...

Table of Contents