Delta Electronics AC Drive VFD-F Series User Manual page 19

VFD-F Series
Terminals [+2/B1, B2] for connecting brake resistor and terminals [+2/B1, -] for
connecting external brake unit
BR
+2/ B1
Connect a brake resistor or brake unit in applications with frequent deceleration ramps,
short deceleration time, too low brake torque or requiring increased brake torque.
If the AC motor drive has a built-in brake chopper, connect the external brake resistor to
the terminals [ ＋ 2/B1, B2].
Some models of VFD-F series don't have a built-in brake chopper, please connect an
external optional brake unit and brake resistor.
When not used, please leave the terminals [+2(+2/B1), -] open.
WARNING!
Short-circuiting [B2] or [-] to [+2/B1] can damage the AC motor drive.
BR
VFDB
B2
+2/ B1
Br ak e res istor(optional)
Br ak e unit(optional )
Refer to Appendix B for the us e of
special brake resis tor /unit
-
3-8
DELTA ELECTRONICS, INC. ALL RIGHTS RESERVED