Delta C2000 Series User Manual page 59

Chapter 5 Main Circuit Terminals C2000 Series
Terminals for connecting DC reactor, external brake resistor, external
brake resistor and DC circuit
This is the terminals used to connect the DC reactor to improve the power
factor. For the factory setting, it connects the short-circuit object. Please
remove this short-circuit object before connecting to the DC reactor.
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.
Brak e re sistor
(optional)
B1
The external brake resistor of Frame A, B and C should connect to the
terminals (B1, B2) of AC motor drives.
For those models without built-in brake resistor, please connect external
brake unit and brake resistor (both of them are optional) to increase brake
torque.
When the terminals +1, +2 and - are not used, please leave the terminals
open.
DO NOT connect [+1, -], [+2, -], [+1/DC+, -/DC-] or brake resistor directly to
prevent drive damage.
DC+ and DC- are connected by common DC bus, please refer to Chapter
5-1(Main Circuit Terminal) for the wiring terminal specification and the wire
gauge information.
Please refer to the VFDB manual for more information on wire gauge when
installing the brake unit.
Brak e re sistor
(optional)
BR
VFDB
B 2 +
5-4
Brak e un it
(o ption al)
-