IPE300 series engineering VFD Optional peripheral accessories
-368-
Braking unit installation
All 660V VFD models need external braking units.
(+) and (-)are the terminals for connecting braking units.
The connection cable length between the (+) and (-) terminals of the VFD and
those of a braking unit must be shorter than 5 m, and the connection cable length
between the BR1 and BR2 terminals of a braking unit and the terminals of a
braking resistor must be shorter than 10 m.
The following figure shows the connection of one VFD to a dynamic brake unit.
+ + + + +++
External braking resistor
(+)
DC+
(-)
DC-
BR1 BR2 PE(-)(+)
++ + + + ++
VFD
DBU
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