Installation requirements

  • The components must be protected against conductive dirt, e.g. by installing them in a control cabinet with degree of protection IP54 in accordance with EN 60529.
  • Assuming that the presence of conductive dirt can be excluded at the installation site, a control cabinet with a correspondingly lower degree of protection is also permitted if in accordance with the applicable standards, e.g. EN 60204‑1. The same also applies to temporary condensation, e.g. due to rapid ambient temperature changes.
  • 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:
    • Single conductors can be routed within an installation space.
    • Outside a closed installation space: shielded cables must be routed permanently (fixed) and protected against external damage, or equivalent measures must be taken.
    • Adhere to the regulations in force for the application.
    • If the safe outputs and inputs are wired in a 2-channel configuration, the corresponding cables must be routed closely together.
    • The cables must have the same length. A difference in length ≤ 3% of the two cables is permitted.
    • The following maximum cable lengths must be observed:
    • STO: 30 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.
  • 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.
  • When an EI7C FS built-in encoder is connected to the unit, the encoder cable must not carry a TF signal.