Lenze i550 Series - Operation in Motor and Generator Mode

Final conguraon
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Accessories ^ 238
Operaon in motor and generator mode
The energy analysis diers between operaon in motor mode and generator mode.
During operaon in motor mode, the energy ows from the supplying mains via the inverter
to the motor which converts electrical energy into mechanical energy (e. g. for liing a load).
During operaon in generator mode, the energy ows back from the motor to the inverter.
The motor converts the mechanical energy into electrical energy - it acts as a generator (e. g.
when lowering a load).
The drive brakes the load in a controlled manner.
The energy recovery causes a rise in the DC-bus voltage. If this voltage exceeds an upper limit,
the output stage of the inverter will be blocked to prevent the device from being destroyed.
The drive coasts unl the DC-bus voltage reaches the permissible value range again.
In order that the excessive energy can be dissipated, a brake resistor or a regenerave module
is required.
Informaon on project planning
Project planning process
Operaon in motor and generator mode
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