tems, as well as auxiliary and additional components (mains filter, mains
choke, braking resistors, etc.).
Encoder
Part of an electric drive system which determines the actual value of a value
to be controlled.
Equipment grounding conductor
The equipment grounding conductor establishes the conductive connection
from the connection point of the equipment grounding conductor of the com‐
ponent to the equipment grounding system.
Equipment grounding system
The equipment grounding system is the entire equipment by which the equip‐
ment grounding conductors of components are connected to the equipment
grounding conductor of the mains. In the majority of cases, an earth-circuit
connector belongs to the equipment grounding system.
FMEA
Failure Mode and Effects Analysis
Hybrid cable
In a hybrid cable, both electrical signals are transmitted on copper wires and
optical signals are transmitted on fiber optic cables.
Inverter
Device which generates three-phase alternating voltage with variable ampli‐
tude and frequency from the DC bus direct voltage.
Leakage capacitance
The capacitances which generate so-called leakage currents against ground
at the outputs of inverters are regarded as leakage capacitance C
ab
.
The total value of the leakage capacitance is mainly determined by the ca‐
pacitances in output filters, capacitances of the motor cables (capacitance
per unit length against shield and ground wire) and the capacitances of mo‐
tors (winding capacitance against housing).
Line
A line consists of an electric conductor and its insulation. Sheathed lines are
also called cables.
Master communication
Master communication is the specific communication between hierarchical
communication levels. By means of master communication, command varia‐
bles (e.g., command values) are transmitted from a higher-level control unit
to receivers, and actual values, for example, are transmitted back to the con‐
trol unit.
DOK-INDRV*-SYSTEM*****-PR06-EN-P
Rexroth IndraDrive Drive Systems with HMV01/02 HMS01/02, HMD01, HCS02/03
Bosch Rexroth AG
299/309
Glossary, Definitions of Terms, Abbreviations
