Block Diagram Of The Brake And Dc Options (+D150, +D151 And +H356) - ABB ACS880-07 Series Hardware Manual

Block diagram of the brake and DC options (+D150, +D151 and +H356)

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A
B
A Drive module cubicle
T1 Drive module
B Brake resistor cubicle
1 Rectifier. Converts alternating current and voltage to direct current and voltage.
2 DC link. DC circuit between rectifier and inverter. DC choke is included in frames R6 to R9. An AC input
choke is included in frames R10 and R11.
3 Inverter. Converts direct current and voltage to alternating current and voltage.
4 Brake chopper (option +D150). Conducts the surplus energy from the intermediate DC circuit of the drive
to the brake resistor when necessary. The chopper operates when the DC link voltage exceeds a certain
maximum limit. The voltage rise is typically caused by deceleration (braking) of a high inertia motor. User
obtains and installs the brake resistor when needed.
5 Brake resistor (option +D151)
6 Optional DC cable connection busbars (+H356). Not available with option +D150.
T1
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Operation principle and hardware description 33
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