4
05.01
4.4 Current reduction/derating
4-94
© Siemens AG 2008 All Rights Reserved
SIMODRIVE 611 Configuration Manual (PJU) – 05/2008 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
4 Power Modules 10.0405.08
To Next Page
Loading...
