STOBER
15 | Appendix
05/2019 | ID 442790.01
203
15.6
Symbols in formulas
Symbol
Unit
Explanation
C
1max
F
Maximum input capacitance
C
maxPU
F
Charging capacity of the power unit
C
PU
F
Self-capacitance of the power unit
D
IA
%
Reduction in the nominal current depending on the installation altitude
D
T
%
Reduction in the nominal current depending on the surrounding temperature
E
2max
J
Maximum switch-off energy at the output
f
1max
Hz
Maximum input frequency
f
2max
Hz
Maximum output frequency
f
2PU
Hz
Output frequency of the power unit
f
N
Hz
Rotating magnetic field frequency at nominal speed
f
PWM,PU
Hz
Frequency of the pulse width modulation of the power unit
I
0
A
Stall current
I
1max
A
Maximum input current
I
1maxCU
A
Maximum input current of the control unit
I
1maxPU
A
Maximum input current of the power unit
I
1N,PU
A
Nominal input current of the power unit
I
2max
A
Maximum output current
I
2maxPU
A
Maximum output current of the power unit
I
2PU(A)
A
Output current of the power unit for axis A
I
2PU(B)
A
Output current of the power unit for axis B
I
2N,PU
A
Nominal output current of the power unit
I
LINE
A
Supply current
I
maxLINE
A
Maximum supply current
I
minLINE
A
Required supply current
I
N
A
Nominal current
I
N,MF
A
Nominal current of the choke or motor filter
λ
LINE
–
Power factor of the supply grid
M
N
Nm
Nominal torque of the motor
n
fed
–
Number of drive controllers connected to the grid
n
N
rpm
Nominal speed: The speed for which the nominal torque M
N
is specified
p
–
Number of pole pairs
P
effRB
W
Effective power at the external braking resistor
P
LINE
W
Power output
P
maxRB
W
Maximum power at the external braking resistor
P
MOT
W
Motor rating
P
totalMOT
W
Total rating of all motors
P
V
W
Power loss
P
V,CU
W
Power loss of the control unit
R
2minRB
Ω
Minimum resistance of the external braking resistor
ϑ
amb
°C
Surrounding temperature