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FUNDAMENTAL SAFETY INSTRUCTIONS
General safety instructions
WARNING
Electric shock and danger to life due to other energy sources
Touching live components can result in death or severe injury.
Only work on electrical devices when you are qualified for this job.
Always observe the country-specific safety rules.
Generally, the following six steps apply when establishing safety:
Prepare for disconnection. Notify all those who will be affected by the procedure.
Isolate the drive system from the power supply and take measures to prevent it being switched back on again.
Wait until the discharge time specified on the warning labels has elapsed
Check that there is no voltage between any of the power connections, and between any of the power connections
and the protective conductor connection.
Check whether the existing auxiliary supply circuits are de-energized.
Ensure that the motors cannot move.
Identify all other dangerous energy sources, e.g. compressed air, hydraulic systems, or water. Switch the energy
sources to a safe state.
Check that the correct drive system is completely locked.
After you have completed the work, restore the operational readiness in the inverse sequence.
WARNING
Electric shock and danger to life due to other energy sources
Touching live components can result in death or severe injury.
Only work on electrical devices when you are qualified for this job.
Always observe the country-specific safety rules.
Generally, the following six steps apply when establishing safety:
Prepare for disconnection. Notify all those who will be affected by the procedure.
Isolate the drive system from the power supply and take measures to prevent it being switched back on again.
Wait until the discharge time specified on the warning labels has elapsed
Check that there is no voltage between any of the power connections, and between any of the power connections
and the protective conductor connection.
Check whether the existing auxiliary supply circuits are de-energized.
Ensure that the motors cannot move.
Identify all other dangerous energy sources, e.g. compressed air, hydraulic systems, or water. Switch the energy
sources to a safe state.
Check that the correct drive system is completely locked.
After you have completed the work, restore the operational readiness in the inverse sequence.
WARNING
Risk of electric shock and fire from supply networks with an excessively low impedance
Excessively high short-circuit currents can lead to the protective devices not being able to interrupt these short-
circuit currents and being destroyed, and thus causing electric shock or a fire.
Ensure that the prospective short-circuit current at the line terminal of the inverter does not exceed the breaking
capacity (SCCR or Icc) of the protective device used.
SINAMICS V50 converter
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Operating Instructions, 04/2022, FW V1.0, A5E44777205B AB
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