ABB ACH480 - Simplified main circuit diagram; Product variants; IEC and UL (NEC) product types

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Simplified main circuit diagram
R-
L1
L2
L3
T1/U
T2/V
T3/W
R+
UDC+ UDC-
1
2
3
4
5
Rectifier. Converts alternating current and voltage to direct current and voltage.1
DC link. DC circuit between rectifier and inverter.2
Inverter. Converts direct current and voltage to alternating current and voltage.3
Brake chopper. Conducts 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 necessary.
4
DC connection (UDC+, UDC-).5
Product variants
The drive has two product variants:
• Standard unit: drive with assistant control panel and RIIO-01 I/O & EIA-485
module
• Base unit: drive without control panel and without RIIO-01 I/O & EIA-485 module
(option +0J400+0L540) .
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IEC and UL (NEC) product types
The ACH480 series consists of IEC product types and UL (NEC) product types. The
IEC types are designed for global use. The UL (NEC) types are specifically designed
for use in North America.
30 Operation principle and hardware description