Table 3-1: Used Terms And Abbreviations - KEB COMBIVERT F6 Programming Manual

Used terms and abbreviations
Term
Modulation
MTTF
NN
Emergency switching off
Emergency stop
Object directory
OC
OH
OL
OSSD
PA
PDS
PE
PELV
PFD
PFH
SCL

Table 3-1: Used terms and abbreviations

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Description
means in drive technology that the power semiconductors are con-
trolled
mean service life to failure
Sea level
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
Overcurrent
Overheating
Overload
Output switching element; Output signal that is checked at regular
intervals to ensure that it can be switched off. (safety technology)
Potential equalization
Power drive system including motor and sensor (encoder)
Protective earth
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
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