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.
- 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 length must be observed:
- STO: 100 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.
- 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.
- When the STO control cables are routed into the connection box to terminal X9 of the connection unit, the cable ends must be covered with conductor end sleeves and the cables must be fixed close to terminal X9 using cable ties. Other low-voltage signals can be bundled together with the STO signals.
- For safety-related applications using the device, the jumpers labeled with "Caution, remove Jumper for Safety Operation" at STO terminal X9 must be removed. The unit designs in which the STO connection is made using plug connectors do not have labeled jumpers. The installed jumper is relevant to the function.