CHAPTER 2 – POWER ELECTRONICS AND CABINET FEATURES 31
Independent of the power supply scheme, the drive
provides an internal back-up supply for 100 ms.
This safety feature enables the control system to
shut down the drive in a controlled manner if the
auxiliary power fails.
Optionally the drive can be equipped with an addi-
tional battery. The battery supports 15 minutes
ride-through operation of the control system.
The power feed for the auxiliary
supply must be protected with a
suitable circuit protection rated
for the inrush current. For infor-
mation, see utility consumption
list of the drive.
For information on the configuration of
the auxiliary power interface in the drive,
see the wiring diagrams.
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