Installation requirements

  • The wiring technology must comply with the EN 60204-1 standard.
  • The safe control cables must be routed in accordance with the EMC requirements. The following points must therefore be observed:
    • Shielded cables must be permanently (fixed) installed and protected against external damage, or equivalent measures must be taken.
    • Adhere to the regulations in force for the application.
    • The following maximum cable lengths must be observed:
    • STO: 100 m
    • F-DI: 30 m
    • F-DOx: 30 m
    • F-SSx: 30 m
  • You must use suitable measures to ensure that the safe control cables are routed separately from the power lines of the drive. This does not apply to cables approved by SEW‑EURODRIVE specifically for this application case.
  • The STO function does not detect short circuits or interference voltage in the supply line, so you must ensure the following:
    • No parasitic voltages can occur in the STO control cables
    • The external safety controller can detect a crossfault from an external potential to the STO control cables.
  • The values specified for the safety components must be strictly adhered to when designing the safety circuits.
  • The STO signals must not be used for feedback.
  • Only grounded voltage sources with protective electrical separation (PELV) in accordance with EN 61131-2 and EN 60204-1 may be used for safety controllers/safety relays/external sensors.
  • When planning the installation, observe the technical data of the device.
  • The 0V24_Out and 24V_Out supply voltages of the device may only be used to supply the device-internal STO input. The cable length must not exceed 30 m.
  • This connection variant is not permitted for STO group disconnection.
  • For safety-related applications with the STO safety sub-function, the jumper plug at the STO input must be removed. In the devices with the integrated CS..A safety option, the STO function is performed exclusively via the safety option.
  • The parallel connection of a maximum of 2 brakes to a safe SBM brake module is permitted. The 2 brakes must be the same in terms of size and type for this purpose. SEW‑EURODRIVE recommends that you provide a safe brake module for every brake. This enables separate control of the two brakes, e.g. for a brake test.