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14 Introduction to the manual
Terms and abbreviations
Term
BCON
BCU
BDPS
Brake chopper
Brake chopper module
Brake resistor
Brake unit
CIO
Control unit
Cubicle
DC link
Drive
EMC
Frame, frame size
Intermediate circuit
Inverter unit
Multidrive
Parameter
Supply unit
ZMU
Description
Type of control board
Type of control unit
Module internal power supply board
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 decel-
eration (braking) of a high inertia motor.
Brake chopper enclosed in a metal frame or housing. Intended for cabinet in-
stallation.
Dissipates the drive surplus braking energy conducted by the brake chopper
to heat
Brake chopper modules and the necessary auxiliary equipment, such as control
electronics, fusing and cabling
I/O module for controlling cooling fans
The part in which the control program runs.
One section of a cabinet-installed drive. A cubicle is typically behind a door of
its own.
DC circuit between
Frequency converter for controlling AC motors
Electromagnetic compatibility
Physical size of the drive or power module
DC circuit between rectifier and inverter
Inverter module(s) under control of one control unit, and related components.
One inverter unit typically controls one motor.
Drive for controlling several motors which are typically coupled to the same
machinery. Includes one supply unit, and one or several inverter units.
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. For example, variable, constant, or signal.
Supply module(s) under control of one control unit, and related components.
Type of memory unit, attached to the control unit
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