Hardware description 37
Operation principle
The figure shows the simplified main circuit diagram of the drive.
1
Rectifier. Converts alternating current and voltage to direct current and voltage.
2
DC link. DC circuit between rectifier and inverter.
3
Inverter. Converts direct current and voltage to alternating current and voltage.
4
Brake chopper. Conducts the surplus energy from the intermediate DC circuit of the
drive to the brake resistor when it is necessary and if an external brake resistor is
connected to the drive. The chopper operates when the DC link voltage exceeds a
certain maximum limit. The voltage rise is typically caused by deceleration (braking) of
a motor. The user obtains and installs the brake resistor when needed.
5
DC connection (UDC+, UDC-). Common DC supply capability pending.
R-
L1
L2
L3
T1/U
T2/V
T3/W
R+
UDC+ UDC-
1
2
3
4
5
Summary of Contents for ACS380 Series
Page 1: ...ABB MACHINERY DRIVES ACS380 drives Hardware manual...
Page 4: ......
Page 12: ...12 Table of contents...
Page 20: ...20 Safety instructions...
Page 46: ...46 Mechanical installation...
Page 60: ...60 Planning the electrical installation...
Page 86: ...86 Maintenance...
Page 120: ...120 Technical data...
Page 122: ...122 Dimension drawings Frame R0 1 phase 230 V...
Page 123: ...Dimension drawings 123 Frame R0 400 V...
Page 124: ...124 Dimension drawings Frame R1 230 V...
Page 125: ...Dimension drawings 125 Frame R1 3 phase 230 V and 3 phase 400 V...
Page 126: ...126 Dimension drawings Frame R2 230 V...
Page 127: ...Dimension drawings 127 Frame R2 400 V...
Page 128: ...128 Dimension drawings Frame R3 400 V...
Page 129: ...Dimension drawings 129 Frame R4 400 V...
Page 130: ...130 Dimension drawings...
Page 138: ...138 Resistor braking...
Page 169: ...BTAC 02 pulse encoder interface module 169 Dimensions 3AXD50000031154 rev A...