Siemens SINUMERIK 828D Commissioning Manual page 353

Drive unit
The drive unit includes all components, which are connected via → DRIVE-CLiQ and
required for carrying out a drive task: → Motor Module → Control Unit → Line Module and the
required → Firmware and → Motors, but not complementary components (such as filters and
reactors). Several → Drives can be implemented in one 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 the → Control Unit, → Line Modules, → Motor Modules, → Motors and speed/position
encoders.
DRIVE-CLiQ is based on Industrial Ethernet using twisted-pair lines. The DRIVE-CLiQ line
provides the send and receive signals, as well as the +24 V power supply.
Encoder
Records and makes positions available for electronic processing. Depending on their
mechanical design, encoders can be incorporated in the → Motor (→ Motor encoder) or
mounted on the external mechanics (→ External encoder). Depending on the type of motion,
a distinction is made between rotary encoders (also called shaft encoders) and translatory
encoders (e.g. → Linear encoder). In terms of measured value provision, we distinguish
between → Absolute encoders (code sensors) and → Incremental encoders. See →
Incremental encoder TTL/HTL → Incremental encoder sin/cos 1 Vpp → 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 (externally
mounted encoder) is used for direct position detection.
Hardware
In the context of license management of SINUMERIK → software products, hardware refers
to the component of a SINUMERIK control system to which → licenses are assigned on the
basis of its unique identifier. The license information is also saved to non-volatile memory on
this component, e.g. on a → CompactFlash card.
Hardware serial number
The hardware serial number is a permanent part of the → CompactFlash card. It is used to
identify a control system uniquely. The hardware serial number can be determined by:
● → Certificate of License
● User interface
● Label on the CompactFlash card
Turning and Milling
Commissioning Manual, 02/2012, 6FC5397-3DP40-3BA0
Glossary
353