Stober SD6 - Page 7

ID 442426.04 7WE KEEP THINGS MOVING
General instructions
1
Manual SD6
Formula
symbols
Unit Explanation
D%Derating
D
IA
% Derating depending on the installation altitude of
the drive controller
D
T
% Derating depending on the surrounding
temperature of the drive controller
f Hz Frequency
f
2
Hz Output frequency
f
2PU
Hz Output frequency of the drive controller power
board
f
max
Hz Maximum frequency
f
PWM,PU
Hz Internal pulse clock frequency of the drive
controller power board
I A Current
I
1
A Input current
I
1maxPU
A Maximum input current of the drive controller
power board
I
1maxCU
A Maximum input current of the drive controller
control board
I
1N,PU
A Nominal input current of the drive controller power
board
I
2
A Output current
I
2max
A Maximum output current
I
2maxPU
A Maximum output current of the drive controller
power board
I
2min
A Minimum output current
I
2N,PU
A Nominal output current of the drive controller
power board
I
N
A Nominal current
nrpmSpeed
n
N
rpm Nominal speed: Speed at which the nominal torque
M
N
is reached.
PWPower
P
maxRB
W Maximum power at the external braking resistor
P
V,PU
W Power loss of the drive controller power board
P
V,CU
W Power loss of the drive controller control board
R Ω Resistance
R
2minRB
Ω Minimum resistance of the external braking
resistor
ϑ °C Temperature
ϑ
amb,max
°C Maximum surrounding temperature
τ
th
s Thermal time constant
tsTime
t
min
s Minimum time