Manual

0198441113730, V2.02, 03.2011
BRS3 9 Glossary
3-phase stepper motor 77
9.2 Terms and Abbreviations
See chapter 2.5 "Standards and terminology" for information on the per-
tinent standards on which many terms are based. Some terms and ab-
breviations may have specific meanings with regard to the standards.
Axial forces Tension or compression forces acting longitudinally on the shaft
Centering collar Centering device at the motor flange that allows for accurate motor
mounting.
DOM Date of manufacturing: The nameplate of the product shows the date of
manufacture in the format DD.MM.YY or in the format DD.MM.YYYY. Ex-
ample:
31.12.09 corresponds to December 31, 2009
31.12.2009 corresponds to December 31, 2009
Degree of protection The degree of protection is a standardized specification for electrical
equipment that describes the protection against the ingress of foreign
objects and water (for example: IP 20).
EMC Electromagnetic compatibility
Encoder Sensor for detection of the angular position of a rotating component. In-
stalled in a motor, the encoder shows the angular position of the rotor.
Error Discrepancy between a detected (computed, measured or signaled)
value or condition and the specified or theoretically correct value or con-
dition.
Error class Classification of errors into groups. The different error classes allow for
specific responses to errors, for example by severity.
Fatal error In the case of fatal error, the product is no longer able to control the mo-
tor so that the power stage must be immediately disabled.
Fault Fault is a state that can be caused by an error. Further information can
be found in the pertinent standards such as IEC 61800-7, ODVA Com-
mon Industrial Protocol (CIP).
Fault reset A function used to restore the drive to an operational state after a de-
tected error is cleared by removing the cause of the error so that the er-
ror is no longer active.
Holding brake The holding brake in the motor has the task of holding the current motor
position when the power stage is disabled, even if external forces act (for
example, in the case of a vertical axis). The holding brake is not a safety
function.
Length In the type code, the length is defined in terms of the number of stacks.
PTC Resistor with positive temperature coefficient. Resistance value in-
creases as the temperature rises.
Radial forces Forces that act radially on the shaft
Shaft sealing ring A sealing ring with a fixed seat in the motor flange. The sealing lip runs
on the surface of the rotating shaft, which increases the degree of pro-
tection of the shaft bushing. Regular lubrication of the shaft sealing ring
is essential and the allowable maximum speed of the motor shaft must
not be exceeded.
Size In the type code, the size is defined in terms of the flange size.