Siemens SIMODRIVE 611A - Page 28

3
02.98
1-28
 Siemens AG 1998 All Rights reserved 6SN1197–0AA00 02.98 Edition
SIMODRIVE 611 (PJ)
t
P
P
max
P
n
P
s6
0.4 P
n
4 min
10 min
t
P
P
max
P
n
P
s6
0.4 P
n
10 s
60 s
t
P
P
max
P
n
0.2 s
10 s
t
P
P
n
4 s
10 s
FP
n
F:For all NE modules up to Pn  80 kW, F=1.6
For Pn=120 kW, F=1.4
Peak output duty cycle without pre–loading conditionPeak output duty cycle with pre–loading
condition
Peak output duty cycle with pre–loading conditionS6 duty cycle with pre–loading condition
Figure 3-2
The following rule of thumb is valid:
1
T
T
0
P
(t)
P
n
2
dt < 1.03;
P
n
< P
(
t
)
 P
max
;
tŮ[0, T ]
For load duty cycles with a period T10 s:
1
T
T
0
P
(t)
P
n
2
dt < 0.90;
For load duty cycles with a period 10 s < T 1 min:
1
T
T
0
P
(t)
P
n
2
dt < 0.89;For load duty cycles with a period 1 min < T 10 min:
P
(t)
= the instantaneous power demand
P
n
< P
(
t
)
 P
max
;
tŮ[0, T ]
P
n
< P
(
t
)
 P
max
;
tŮ[0, T ]
Rated load duty
cycles for NE mo-
dules
3.2.1 Technical data, supply infeed modules