Overview of the safety options

In the device, the STO safety sub-function is always available and can be extended with one of the following 3 safety options and with up to 2 SBM safe brake modules:

  • MOVISAFE® CSB31A (/SBA) safety option
    • 4 safe single-channel digital inputs or 2 safe two-channel digital inputs
    • 2 safe two-channel digital outputs
  • The SBC, STO and SS1-t safety sub-functions are available with the MOVISAFE® CSB31A (/SBA) safety option. The functions can be controlled via safe communication and safe digital inputs.
  • MOVISAFE® CSS..A (/SSA) safety option
    • 4 safe single-channel digital inputs or 2 safe two-channel digital inputs
    • 2 safe two-channel digital outputs
    • Optional 2nd encoder slot (not used for functional safety)
  • The SBC, STO and SS1-t safety sub-functions are available with the MOVISAFE® CSS..A (/SSA) safety option. When a safe motor encoder is being used, the SS1-r, SS2, SOS, SLS, SSM, SSR, SLA, SLI and SDI safety sub-functions and the SBT brake diagnostics are available for motion monitoring. The functions can be controlled via safe communication and safe digital inputs.
  • MOVISAFE® CSA31A (/SAA) safety option
    • 4 safe single-channel inputs or 2 safe two-channel inputs
    • 2 safe two-channel outputs
    • 2nd encoder slot (to be used for functional safety)
  • The SBC, STO and SS1-t safety sub-functions are available with the MOVISAFE® CSA31A (/SAA) safety option. When a safe encoder system is being used, the SS1-r, SS2, SOS, SLS, SSM, SSR, SLA, SLI, SDI, SCA and SLP safety sub-functions and the SBT brake diagnostics are available for motion and position monitoring. The functions can be controlled via safe communication and safe digital inputs. Furthermore, up to 2 external encoders can be connected, which are evaluated by the inverter and the safety option in addition to the motor encoder.

The PROFIsafe and Safety over EtherCAT® profiles are available for safe communication.

The described safety technology of the device has been developed and tested according to the following safety requirements:

  • STO safety sub-function, MOVISAFE® CS..A safety option:
    • SIL 3 according to EN 61800-5-2, EN 61508
    • PL e according to EN ISO 13849‑1
  • SBM safe brake module:
    • PL d according to EN ISO 13849-1

This was certified by TÜV Rheinland. A copy of the TÜV certificate can be requested from SEW-EURODRIVE.