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Power-up Sequence for
Regenerative Brakes and
B Frame AC Drives
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Regenerative Brake Operation
When using a 1336 REGEN Line Regeneration Package with a B
Frame 1336 PLUS, PLUS
power-up sequence is needed to avoid clearing the AC line fuses
on the input of the AC drive or the DC bus fuses between the drive
and the Regenerative Brake. These fuses will clear if both the
1336 REGEN Package and the connected B Frame AC drive are
powered up from the AC supply simultaneously. To avoid the
problem, the Regenerative Brake should be powered up before the
AC Drive is connected to the AC line. The 1336 REGEN
Precharge circuit will charge the capacitor bank in both the 1336
REGEN Converter and in the connected AC drive. The AC line
can then safely be connected to the AC drive. On C Frame or
larger AC drives, the 1336 REGEN Package and the AC drive may
be powered up simultaneously.
1336 REGEN
Precharge
Close this contactor first.
, IMPACT, or FORCE, a special
II
Close this contactor
two to three seconds later.
1336 PLUS,
PLUS II,
IMPACT,
or FORCE
AC Drive
+
3% Line
1336 REGEN
Reactor
Converter
3–3
Motor
–
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