Siemens SINUMERIK 840Di sl Commissioning Manual page 622

Glossary
Motor
For the electric motors that can be driven by –> "SINAMICS", a basic distinction is made
between rotary and linear motors with regard to their direction of motion, and between
synchronous and induction motors with regard to their electromagnetic operating principle.
For SINAMICS, the motors are connected to a -> motor module. See -> "Synchronous
motor" -> "Asynchronous motor" -> "Built-in motor" -> "Motor encoder" -> "External encoder"
Motor encoder
An -> "Encoder", e.g. -> "Resolver", -> "Incremental encoder TTL/HTL" or -> "Incremental
encoder sin/cos 1 Vpp"), which is integrated in or attached to the motor. The encoder detects
the motor speed and, in the case of synchronous motors, also the rotor position angle (of the
commutation angle for the motor currents). For drives without an additional -> "direct position
measuring system", it is also used as a -> "position encoder" for position control. In addition
to the motor encoders, -> there are "external encoders" for -> "direct position sensing".
Motor Module
A motor module is a power unit (DC-AC inverter) that provides the power supply for the
motor(s) connected to it. Power is supplied through the -> "DC link" of the -> "Drive unit". A
motor module must be connected via a -> DRIVE-CLiQ to a control unit in which the control
and regulation functions of the motor module are stored. There are -> "Single motor
modules" and -> "Double motor modules".
Option slot
Slot for an optional module (e.g. in the –> "Control Unit").
Parameter
Variable used on the drive system that the user can read and, in some cases, write. In ->
SINAMICS, all specifications defined in the -> "PROFIdrive" profile are fulfilled by a
parameter. See -> "Visualization parameters" -> "Adjustable parameters"
PROFIBUS
Field bus standardized in accordance with IEC 61158, Sections 2 to 6. The suffix "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". There are three mechanical
variants of sensor modules:
SMCxx = Sensor Module Cabinet-Mounted = Sensor module for the snap on installation in
the cabinet
SME = Sensor Module Externally Mounted = Sensor module with higher protection type for
installation outside the control cabinet
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Commissioning Manual, 05/2008, 6FC5397–4CP10–4BA0
Manual