Siemens SINUMERIK 804D sl Commissioning Manual page 311

PROFIBUS
Field bus to IEC 61158, Sections 2 to 6.
The abbreviation "DP" is no longer included because PROFIBUS FMS is not standardized
and PROFIBUS PA (for Process Automation) is now part of the "general" –> "PROFIBUS".
Sensor Module
Hardware module for evaluating speed/position encoder signals and providing detected
actual values as numerical values at a -> DRIVE CLiQ Socket".
Three mechanical Sensor Module variants are available:
- SMCxx = Sensor Module Cabinet-Mounted
- SME = Sensor Module Externally Mounted (with a high degree of protection)
Servo Drive
An electric servo drive comprises a motor, a –> "Motor Module", a –> "Servo Control" and, in
most cases, a speed and position –> "Sensor"
Electric servo drives are normally extremely precise and have a high dynamic response.
They are designed for cycle times to less than 100 ms, and often have a short-time overload
capacity, which enables quick acceleration. Servo drives are available as rotary and linear
drives and are used for machine tools, handling robots, and packaging machines.
Servo Control
For -> "Motor"s equipped with a -> "Motor Encoder", this control type allows operation with a
high level of -> "Accuracy" and -> "Dynamic Response".
In addition to speed control, position control can also be implemented.
SITOP Power
Components for –> "Electronics Power Supply".
Example: 24 V DC
Smart Line Module
Unregulated line infeed/feedback unit with a diode bridge for the infeed and stall-protected,
line-commutated feedback via -> "IGBT"s.
The Smart Line Module supplies the DC link voltage for the -> "Motor Module"s.
Control word
Bit-coded -"Process data" word, transmitted by -> "PROFIdrive" at cyclic intervals to control
the drive states.
Vector Control
Vector control (field-oriented control) is a high-performance control type for induction
machines. It is based on an exact model calculation of the motor and two current
components that simulate and accurately control the flux and torque by means of software
algorithms, thereby enabling predefined speeds and torques to be observed and limited
CNC Part 1 (NCK, PLC, drive)
Commissioning Manual, 11/2006, 6FC5397-2AP10-2BA0
Appendix
A.2 Small SINAMICS Glossary
311