Restrictions
- Note that if the drive does not have a mechanical brake, or if the brake is defective, the drive may coast to a halt (depending on the friction and mass moment of inertia of the system). In case of regenerative loads, the drive can even accelerate. This must be taken into account in a risk assessment of the system/machine. Additional safety measures might have to be implemented (e.g. safety brake system).
- ® cannot be used without an additional brake system for application-specific safety functions that require active deceleration (braking) of the dangerous movement.
- When using the SS1-t function as described in chapter "Safety subfunctions", the brake ramp of the drive is not monitored with respect to safety. In the case of an error, the drive might not be decelerated during the delay time, or it might even be accelerated in the worst case. In this case, the safety-related disconnection via the STO function is only activated after the set time delay has elapsed (see chapter "Safety subfunctions"). The resulting hazard must be taken into account in the risk assessment of the system/machine, and additional safety measures have to be implemented.
WARNING
The safety concept is only suitable for performing mechanical work on driven system/machine components.
If the STO signal is disconnected, the line voltage is still present at the DC link of ® .
- Before working on the electric part of the drive system, disconnect it from the supply voltage using an appropriate external disconnecting device, and secure it against unintentional reconnection to the voltage supply.
INFORMATION
