Auxiliary Voltage Connection - ABB ACS380 Hardware Manual

74 Electrical installation

Auxiliary voltage connection

The drive has an auxiliary 24 V DC (±10%)
voltage connection. Depending on the
application, you can use the connection
• To supply external power to the drive
• To supply power from the drive to external
option modules
Connect the external supply or module to the
+24V and DGND terminals.
For more information on how to feed auxiliary
power to the drive, refer to
extension module on page 177.
For voltage input specifications, refer to
Control connection data
There is a DC to DC flyback converter power supply inside BAPO-01 module. This
power supply takes 24 V DC as input and outputs 5 V DC to control board to keep the
processor and communication links alive at all times.
External supply
24VDC (+)
GND (-)
Power supply inside BAPO-01 works alongside the main power supply of the drive
and only kicks in when the main power supply shuts down.
BAPO-01 power
on page 109.
ACS380
+24V
DGND
Main PSU
DI1
DI2
RC
S1
RA
S2
RB
BAPO-01
+24 V internal
+5 V internal