5
05.01
5.4 Current reduction/derating
5-130
©
Siemens AG 2012 All Rights Reserved
SIMODRIVE 611 Configuration Manual (PJU) – 02/2012 Edition
5.4.2
Temperature–dependent derating
For an ambient temperature T > 40
°
C, derating is required according to the
following rule:
X
TU
=100% – 2.5% (T
U
– 40
°
C)
110
105
100
95
90
85
80
75
70
65
60
55
50
45
40
Power in %
Ambient temperature in
°
C
30.0
35.0
40.0
45.0
50.0
55.0
Fig. 5-8
Power as a function of the temperature
Notice
The maximum ambient temperature for operation of T
U
= 55
°
C may not be
exceeded.
5.4.3
Installation height–dependent derating
For an installation altitude h > 1000 m above sea level, derating is required ac-
cording to the following derating characteristic:
110
105
100
95
90
85
80
75
70
65
60
55
50
45
40
Power in %
Installation altitude above sea level in m
0
500
1000
1500
2000
2500
3000
3500
4000
4500
5000
Fig. 5-9
Power relative to the installation altitude
5 Power Modules
10.04
05.08