5
05.01
5.4 Current reduction/derating
5-132
©
Siemens AG 2012 All Rights Reserved
SIMODRIVE 611 Configuration Manual (PJU) – 02/2012 Edition
S
Installation altitude: e.g. Puebla, Mexico, 2200 m above sea level
Derating to 83% I
N
necessary!
S
Temperature: e.g. internal temperature of the switchgear cabinet with 45
_
C,
no air–conditioner
Derating to 87% I
N
necessary!
S
Power module clock cycle frequency 6SN1123–1AA0–0EA2
X
L
= 50%: e.g. for a 6.3 kHz spindle application
Derating to 68% I
N
necessary!
Result:
Derating for the power unit to:
83%
S
87%
S
68%
[
50% I
N
required!
Derating for the line supply infeed to:
83 %
S
87%
[
72% I
N
required!
Derating example
5 Power Modules
10.04
05.08