ABB ACS880-607LC, Hardware Manual

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Terms and abbreviations
Description Term
Type of control board BCON
Type of control unit BCU
Module internal power supply board BDPS
Conducts the surplus energy from the intermediate 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. Brake chopper
Brake chopper enclosed in a metal frame or housing. Intended for cabinet installation. Brake chopper module
Dissipates the drive surplus braking energy conducted by the brake chopper to heat Brake resistor
Brake chopper modules and the necessary auxiliary equipment, such as control
electronics, fusing and cabling Brake unit
I/O module for controlling cooling fans CIO
Circuit board in which the control program runs Control board
Control board built in a housing (often rail-mountable) Control unit
One section of a cabinet-installed drive. A cubicle is typically behind a door of its own. Cubicle
DC circuit between rectifier and inverter DC link
Frequency converter for controlling AC motors Drive
Electromagnetic compatibility EMC
Physical size of the drive or power module Frame, frame size
DC circuit between rectifier and inverter Intermediate circuit
Inverter module(s) under control of one control unit, and related components. One
inverter unit typically controls one motor. Inverter unit
Drive for controlling several motors which are typically coupled to the same machinery.
Includes one supply unit, and one or several inverter units. Multidrive
In the drive control program, user-adjustable operation instruction to the drive, or
signal measured or calculated by the drive.
In some (for example fieldbus) contexts, a value that can be accessed as an object,
eg, variable, constant, or signal. Parameter
Supply module(s) under control of one control unit, and related components. Supply unit
Type of memory unit, attached to the control unit ZMU
14 Introduction to the manual