Delta CT2000 Series User Manual page 43

Chapter 5 Main Circuit TerminalsCT2000 Series
When the AC drive

connected to the motor terminals U/T1, V/T2, and W/T3, respectively ,
the motor will rotate counterclockwise (as viewed on the shaft end of the
motor) when a forward operation command is received. To permanently
reverse the direction of motor rotation, switch over any of the two motor
leads
Terminals for connecting DC reactor, external brake resistor, external brake
resistor and DC circuit (brake unit or common DC bus connection)
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.
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.
output terminals U/T1, V/T2, and
Fo wa rd
Running
DC rea ct or (o ption al)
+ 1
+ 2
Brak e re sistor
(opt ional)
BR
VFDB
B 2 +
5-2
W/T3 are
Brak e un it
(o ption al)
-