Siemens SINUMERIK 840Di sl Commissioning Manual page 621

Drive unit
The drive unit includes all the components connected via –> "DRIVE-CLiQ" that are required
for carrying out a drive task: -> "Motor module" -> "Control unit" -> "Line module", and the
required -> "Firmware" and -> "Motor"s, but not additional components (such as filters or
reactors). Several -> "Drive"s can be implemented in a drive unit. See -> "Drive system"
DRIVE-CLiQ
Abbreviation for "Drive Component Link with IQ".
Communication system for connecting the various components of a SINAMICS drive system,
such as e.g. -> Control unit, -> "Line modules", -> "Motor modules", -> "Motors", and
speed/position encoders.
The DRIVE-CLiQ hardware is based on the Industrial Ethernet standard and uses twisted-
pair lines. The DRIVE-CLiQ line provides the transmit and receive signals, as well as the +24
V power supply.
Encoder
Records and makes positions available for electronic processing. Depending on the
mechanical construction, encoders can be integrated in the –> "Motor" (–> "Motor Sensor")
or mounted on the external mechanics (– "External Sensor"). Depending on the type of
movement, a distinction is made between rotary sensors ("rotary transducers") and
translatory sensors (e.g. - Linear Sensors). In terms of measured value provision, a
distinction is made between -> "Absolute encoders" (code sensors) and -> "Incremental
encoders". See -> "Incremental encoder TTL/HTL" -> "Incremental encoder sin/cos 1Vpp" ->
"Resolver".
External encoder
Position encoder that is not built in or mounted on the -> motor, but is attached outside to the
working machine or via a mechanical intermediate element. The external encoder (see ->
"Attachment encoder") is used for -> "direct position detection".
Infeed
Input component of a converter system for generating a DC link voltage to supply one or
more -> "Motor module"s, including all the required components (e.g. -> "Line module"s,
fuses, reactors, line filters, and firmware, as well as proportional computing power (if
required) in a -> "Control unit".
Line Module
A line module is a power component that generates the DC link voltage for one or more -
"motor modules" from a three-phase mains voltage. The following three line module types
are used for SINAMICS: -> Basic line module, -> Smart line module and -> Active line
module.
The overall function of an infeed, including the required additional components such as ->
Line reactor, proportional computing power in a -> control unit, switching devices, etc. is
called -> Basic infeed, -> Smart infeed, and -> Active infeed.
Manual
Commissioning Manual, 05/2008, 6FC5397–4CP10–4BA0
Glossary
621