Overview Of Power And Control Connections - ABB ACS880-604 Hardware Manual

16 Operation principle and hardware description

Overview of power and control connections

The diagram below shows the power and control connections of the brake chopper
module.
NBRA
NBRC
UDC-
-
+
Item Description
X1 Chopper enable input
X3 Fault indication relay output
V22 Fiber optic cable connection: Chopper control signal
to another chopper (Transmitter)
V23 Fiber optic cable connection: Chopper control signal
from another chopper (Receiver)
X3 1 2 3 V22
UDC+ R+ R-
t°
V23 X2 1 2
t°
X1 1 2
Additional information
Protecting the system against thermal
overload
Controlling the brake chopper from an
external control location
(page 31)
(page 31)