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IMS-MN-LMDE42C_A
GLOSSARY
A
AC
: Alternating current
Acceleration
: The time rate of change of velocity with respect to a fixed reference frame.
The commanded step rate is started at a base velocity and accelerated at a slew velocity at a
defined and controlled rate or rate of changes.
ASCII
: American Standard Code for Information Interchange. Standard for coding of characters.
C
Closed Loop System
: In motion control, this term describes a system wherein a velocity or
position (or both) sensor is used to generate signals for comparison to desired parameters. For
cases where loads are not predictable, the closed loop feedback from an external encoder to
the controller may be used for stall detection, position maintenance, or position verification.
D
Daisy Chain
: This term is used to describe the linking of several devices in sequence, such that a
single signal stream flows through one device and on to another.
DC
: Direct current
Deadband
: A range of input signals for which there is no system response.
Default Value
: Factory setting.
Detent Torque
: The periodic torque ripple resulting from the tendency of the magnetic rotor
and stator poles to align themselves to positions of minimal reluctance. The measurement is
taken with all phases de-energized.
Direction of Rotation
: Rotation of the motor shaft in a clockwise or counterclockwise direction
of rotation. Clockwise rotation is when the motor shaft rotates clockwise while looking at the
end of the protruding motor shaft.
DOM
: The Date of manufacturing on the nameplate of the device is shown in the format DD.MM.
YY,
e.g., 31.12.19 (December 31, 2019).
Duty Cycle
: For a repetitive cycle, the ratio of on time to total cycle time.
E
EMC
: Electromagnetic compatibility
Encoder
: Sensor for detection of the angular position of a rotating component. The motor
encoder shows the angular position of the rotor.
Error
: Operating state of the drive caused as a result of a discrepancy between a detected
(computed, measured, or signaled) value or condition and the specified or theoretically correct
value or condition.
Error Class
: Classification of errors into groups. The different error classes allow for specific
responses to conditions (e.g., by severity).
