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Categorization by frame size and option code
Some descriptions, instructions, technical data and dimensional drawings which concern
only certain brake units are marked with the symbol of the frame size such as 4×R8i. The
marking derives from the quantity and basic construction of the brake chopper modules that
form the brake unit. For example, frame size 2×R8i indicates that the brake unit consists of
two frame size R8i brake chopper modules connected in parallel.
The frame size is marked on the type designation labels. The frame size of each brake
chopper module is also shown in the technical data.
The instructions and technical data which concern only certain optional selections are marked
with option codes (such as +E210). The options included in the drive can be identified from
the option codes on the type designation label.
Use of component designations
Some device names in the manual include the item designation in brackets, for example
[Q20], to make it possible to identify the components in the circuit diagrams of the drive.
Terms and abbreviations
Term/
Abbreviation
BCON
BCU
BDFC
BDPS
BFPS
Brake chopper
Brake chopper module
Brake resistor
Brake unit
Control board
Control unit
Cubicle
DC link
DI
Drive
EMC
FDPI
FEPL-01
FIO-11
Flat-PLS
Frame, frame size
Intermediate circuit
Inverter
Description
Type of control board
Type of control unit
Control board for direct-on-line cooling fan
Module internal power supply board
Control and power supply board for speed-controlled cooling fan
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 enclosed in a metal frame or housing. Intended for cabinet installa-
tion.
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
Circuit board in which the control program runs
Control board built in a housing (often rail-mountable)
One section of a cabinet-installed drive. A cubicle is typically behind a door of its
own.
DC circuit between rectifier and inverter
Digital input
Frequency converter for controlling AC motors
Electromagnetic compatibility
Diagnostics and panel interface board
Optional Ethernet POWERLINK adapter module
Optional analog I/O extension module
Rittal Flat-PLS, a busbar system for standard, commercially available flat busbars
Physical size of the drive or power module
DC circuit between rectifier and inverter
Converts direct current and voltage to alternating current and voltage.
Introduction to the manual 13
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