The high-voltage link rectifies the three-phase mains AC and provides a
regulated DC bus circuit voltage for the power feed to the drives. A buffer
capacitor takes care of any necessary smoothing.
When the drives are in generator mode, the regenerated power is absorbed
by the bleeder resistor and transformed into heat.
The drives can be disconnected from the mains by the TVD’s internal power
contactor.
The TVD 1.3 provides the +24VL and +/-15VM for all connected drive
modules.
In the event of a power failure, the signal voltages are supplied from the DC
bus circuit. Therefore, as the drives operate as a generator, the electronics of
the drives remain functional.
The TVD 1.3 is equipped with extensive monitoring functions. These
communicate with the drive modules via the wire ribbon cable.
The Bb1 contact is critical to the ready state of the drive system. The power
contactor cannot be energized until the Bb1 contact is closed.
DKC01.1-030-3-FW
DKC01.1-040-7-FW
DKC01.3-016-7-FW
DKC01.3-040-7-FW
DKC02.1-040-7-FW
DKC02.3-016-7-FW
DKC02.3-200-7-FW
DKC03.3-016-7-FW
DKC03.3-100-7-FW
DKC03.3-200-7-FW
DKC04.3-016-7-FW
DKC04.3-040-7-FW
DKC04.3-100-7-FW
DKC04.3-200-7-FW
DKC06.3-016-7-FW
DKC06.3-040-7-FW
DKC06.3-100-7-FW
DKC06.3-200-7-FW
DKC11.3-200-7-FW
DKC21.3-016-7-FW
DKC21.3-040-7-FW
DKC21.3-100-7-FW
DKC21.3-200-7-FW
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