Used terms and abbreviations
means in drive technology that the power semiconductors are con-
trolled
mean service life to failure
Switching off the voltage supply in emergency case
Shutdown of a drive in emergency case (not de-energized)
Ordered collection of parameters (objects) of the device
Output switching element; Output signal that is checked at regular
intervals to ensure that it can be switched off. (safety technology)
Power drive system including motor and sensor (encoder)
Safe protective low voltage, earthed
Term used in the safety technology (EN 61508-1…7) for the size of
error probability
Term used in the safety technology (EN 61508-1…7) for the size of
error probability per hour
Synchronous sensorless closed loop. Operation with synchronous
motor model without encoder
Table 3-1: Used terms and abbreviations
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