Siemens 6RA8085-6DS22

Appendix A
A.2 List of abbreviations
SINAMICS DCM DC Converter
Operating Instructions, 12/2018, A5E34763375A
739
Abbreviations, DC-specific terms
Abbreviation
Meaning
2Q
2 quadrant
4Q 4 quadrant
IR
Initial rounding
FR
Final rounding
CU_DC
Control Unit DC
DC_CTRL
DC drive control
RUT
Rampup time
Ia
Actual armature current value
IAlimit
Current limit
If
Actual field current value
ILG
Current at critical conduction
In
Rated current
Kp
P gain
La
Armature circuit inductance
Mlimit
Torque limit
Mact
Actual torque value
n
Speed
nact
Actual speed value
nmin
Minimum speed
NN
Normal zero
nsetp Speed setpoint
Ra
Armature circuit resistance
RDT
Ramp-down time
Tn
Integral time
TSE
Snubber
Tu
Ambient temperature
Ua
Armature voltage
Uf
Field voltage
ULine
Line voltage
USS
Universal serial interface
SICROWBAR
Overvoltage protection