English
TECHNICAL SPECIFICATIONS
Frames A ... C
1 ,5
1 0 0 %
1 0 0 %
1 0 0 %
2
1 0 0 %
1 0 0 %
1 0 0 %
3
1 0 0 %
1 0 0 %
9 3 %
4
1 0 0 %
1 0 0 %
8 7 %
6
8 8 %
8 3 %
7 5 %
8
7 5 %
6 6 %
6 4 %
1 0
6 8 %
6 2 %
-
1 2
6 0 %
5 8 %
-
1 4
5 3 %
5 1 %
-
1 6
4 5 %
4 4 %
-
0%
20%
40%
60%
80%
100%
1,5
2
3
4
6
8
10
12
14
16
Io,
no
m
(%
)
fsw (kHz)
Frames A...C
Frame D
Frame E
fsw (kH z)
Frame D
Frame E
Figure 8.3:
Current derating as a function of the switching frequency in the inverter factory settings condition
In some models of the CFW900 line, it is not possible to follow the derating curve shown in
. In these
cases, the values of
.
If it is not possible to operate with a switching frequency lower than the rated one during overloads, the thermal
management function must be disabled, and in these cases, only for the indicated models, the derating values will
be the ones shown in
.
Table 8.9:
Current derating as a function of the switching frequency
fsw,nom
[kHz]
Thermal
management
CFW900B45P0T2
CFW900B26P0T4
CFW900C80P0T2
CFW900C50P0T4
CFW900D0150T2
CFW900D0146T4
CFW900E0203T4
CFW900E0242T4
1
ID
(1)
NAL
(2)
NAL
(2)
NAL
(2)
100%
1,5
ID
(1)
100%
100%
100%
100%
Enabled
100%
100%
100%
100%
2
Disabled
100%
100%
100%
94%
Enabled
100%
100%
100%
87%
3
Disabled
98%
97%
98%
87%
Enabled
100%
100%
100%
80%
4
Disabled
96%
94%
97%
80%
6
ID
(1)
84%
84%
83%
65%
8
ID
(1)
72%
75%
70%
50%
10
ID
(1)
65%
67%
63%
NAL
(2)
12
ID
(1)
58%
60%
57%
NAL
(2)
14
ID
(1)
50%
53%
50%
NAL
(2)
16
ID
(1)
43%
46%
43%
NAL
(2)
(1)
Indifferent.
(2)
Not allowed.
8.2.4 Derating factor according to the Altitude of the Installation Site
The maximum operating altitude is 1000 meters under rated conditions.
From 1000 m to 4000 m: derate the current by 1% for each increment of 100 m (this is the FDal factor).
From 2000 m to 4000 m: in addition to applying the current derating factor as mentioned above, it is necessary to
reduce the maximum rms supply voltage of the inverter (240 V for 220...240 V models and 480 V for 380...480 V
models) by 1.1% for each 100 m above 2000 m.
graphically illustrates the output current and supply voltage derating specifications according to the
altitude.
104 | CFW900
Summary of Contents for CFW900
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