11 | Appendix STOBER
92
03/2020 | ID 442793.03
11.5 Symbols in formulas
Symbol Unit Explanation
C
maxPU
F Charging capacity of the power unit
C
PU
F Self-capacitance of the power unit
E
2max
J Maximum switch-off energy at the output
f
1max
Hz Maximum input frequency
f
2PU
Hz Output frequency of the power unit
f
PWM,PU
Hz Frequency of the pulse width modulation of the power unit
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
2N,PU
A Nominal 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
P
effRB
W Effective power at the external braking resistor
P
maxRB
W Maximum power at the external braking resistor
R
2minRB
Ω Minimum resistance of the external braking resistor
R
intRB
Ω Resistance of the internal braking resistor
T
M
Year, a Mission time
t
min
ms Minimum cycle time of the application
U
1CU
V Input voltage of the control unit
U
1max
V Maximum input voltage
U
1PU
V Input voltage of the power unit
U
2
V Output voltage
U
2max
V Maximum output voltage
U
2PU
V Output voltage of the power unit
U
offCH
V Switch-off threshold of the brake chopper
U
onCH
V On limit of the brake chopper