Switching Frequency And Temperature; Table 15: Frequency-Dependent Maximum Current For Unit Size 23; Table 16: Frequency-Dependent Maximum Current For Unit Size 24; Table 17: Switching Frequency And Temperature Of The 400 V Units - KEB COMBIVERT F6 Instructions For Use Manual
Installation f6 housing 6
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Also See for COMBIVERT F6:
- Programming manual (544 pages) ,
- Reference manual (305 pages) ,
- Instructions for use manual (80 pages)
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UNIT DATA OF THe 400V UNITS
Inverter size
Output frequency
Frequency-dependent maximum current @ f
Frequency-dependent maximum current @ f
Frequency-dependent maximum current @ f
Frequency-dependent maximum current @ f
Table 15:
Frequency-dependent maximum current for unit size 23
Inverter size
Output frequency
Frequency-dependent maximum current @ f
Frequency-dependent maximum current @ f
Frequency-dependent maximum current @ f
Frequency-dependent maximum current @ f
Table 16:
Frequency-dependent maximum current for unit size 24
3.2.4 Switching frequency and temperature
Inverter size
Rated switching frequency
Max. switching frequency
Min. switching frequency
Max. heat sink temperature
Temperature for derating the switching frequen-
cy
Temperature for uprating the switching frequen-
cy
Temperature for switching to rated switching
frequency
Table 17:
Switching frequency and temperature of the 400 V units
1) The output frequency should be limited in such a way that it does not exceed 1/10 of the switching
frequency.
The drive converter cooling is designed in such a way that at rated conditions the heat
sink overtemperature threshold is not exceeded. A switching frequency higher than the
rated switching frequency also produces higher losses and thus a higher heat sink heat-
ing.
If the heat sink temperature reaches a critical threshold (T
can be reduced automatically step by step, in order to prevent that the drive converter
switches off due to overheating of the heat sink. If the heat sink temperature falls be-
low T
the switching frequency is immediately reduced to rated switching frequency. „Derating"
must be activated, for this function to work.
34
= 2 kHz
s
= 4 kHz
s
= 8 kHz
s
= 16 kHz
s
= 2 kHz
s
= 4 kHz
s
= 8 kHz
s
= 16 kHz
s
1)
1)
1)
the switching frequency is increased back to the setpoint At temperature T
UR
f
/ Hz
out
I
/ %
LIM
I
/ %
LIM
I
/ %
LIM
I
/ %
LIM
f
/ Hz
out
I
/ %
LIM
I
/ %
LIM
I
/ %
LIM
I
/ %
LIM
21
f
/ kHz
8
SN
f
/ kHz
Smax
f
/ kHz
Smin
/ °C
90
T
HS
T
/ °C
84
DR
T
/ °C
70
UR
T
/ °C
87
EM
23 (4 kHz)
0
6
25
154
180
180
121
180
180
79
125
180
34
55
81
24 (2 kHz)
0
6
25
128
180
180
101
155
180
66
104
151
28
46
67
22
23
24
4
4
2
16
2
95
85
75
90
) the switching frequency
DR
EM
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