Glossary, Definitions of Terms, Abbreviations
Accessories
The accessories are assigned to the corresponding device in order to support
its functioning. For example, the basic accessories belong to each drive con‐
troller and supply unit to fasten them and connect them electrically.
Additional components
Additional components complement supply units, converters and inverters.
Typical additional components are mains chokes, mains filters and braking
resistors, for example.
Basic control section circuit board
The basic control section circuit board is the main part of the control section.
It has its own interfaces and, in the case of configurable control sections, ad‐
ditional optional slots for optional modules.
Brake chopper
Electronics used to control a braking resistor.
Braking resistor
During deceleration, a braking resistor converts the kinetic energy of a motor
into thermal energy. When the response voltage is exceeded, the braking re‐
sistor is connected to the DC bus voltage by the brake chopper.
Cable
A cable is a combination of several strands which is kept together by the ca‐
ble jacket. A typical type of cable is the cable for the motor connection.
Capacitance against housing
Drive controllers and supply units have capacitances against housing C
y
which are primarily determined by capacitors at the DC bus (L+, L-). In the
drive system, these capacitors form a low-impedance path back to the device
for the leakage currents.
Closed-loop (CL)
Closed-loop describes the closed-loop-controlled operation of motors, for ex‐
ample with field-oriented control. This operation is possible both in sensorless
form and with encoder and is distinguished with regard to its applications.
Sensorless, i.e. without additional encoder, for velocity control, for example
by means of observer.
With encoder, i.e. with additional encoder, for velocity and position control of
synchronous motors and asynchronous motors in field-oriented operation.
DOK-INDRV*-SYSTEM*****-PR06-EN-P
Rexroth IndraDrive Drive Systems with HMV01/02 HMS01/02, HMD01, HCS02/03
Bosch Rexroth AG 297/309
Glossary, Definitions of Terms, Abbreviations
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