Supply and regen units
Revcon Front End with or without pre-charge circuit for the DC-Bus
Revcon Front End with or without pre-charge circuit for the DC-Bus
The REVCON® RFE enables full energy flow in both directions. In drive mode the drive is fed by the RFE, in case of regenerative currents the energy is directed back to the mains. This way the energy is not wasted like e.g., when using a brake chopper.
The continuously starting regen process makes sure there is only small voltage raise within the DC-Bus, compared to brake choppers. The feeding function of the Revcon Front End units, enables the supply of several drive controllers through the DC-Bus, with the use of only one central REVCON® RFE module. Due to this function, the mains connection of the drives is no longer required. The pre-charging connection of the RFE B3/D3 limits the inrush current to permissible values. RFE B2/D2 does not have a pre-charge circuit for the DC-Bus capacities. This version can be connected to drives which have their own pre-charge circuit when fed through the DC-Bus. The Revcon Front End unit REVCON® RFE is optimized for applications where many Drives are installed, like e.g. crane installations and textile or printing machinery. But the RFE can also be connected to a single drive in order to upgrade to 4Q drive.
The rated current of the RFE model is the continuous feed power and can be transmitted for 100% of the duty cycle. The drive and regen current waveform mainly corresponds to the wave form of a converter input current and is thus suitable for standard industrial networks.
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