STOBER
11 | Appendix
05/2019 | ID 442793.01
95
11.4
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
Length of use
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