Rockwell Automation 1336R REGEN LINE REG - Manual (Page 55)

Regenerative Brake Operation 3–3
Power-up Sequence for
Regenerative Brakes and
B Frame AC Drives When using a 1336 REGEN Line Regeneration Package with a B
Frame 1336 PLUS, PLUS
II , IMPACT, or FORCE, a special
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.
+ –
Close this contactor first.
1336 REGEN
Precharge
1336 REGEN
Converter
3% Line
Reactor
1336 PLUS,
PLUS II,
IMPACT,
or FORCE
AC Drive
Motor
Close this contactor
two to three seconds later.