KEB COMBIVERT 10F6 Series, Инструкция по эксплуатации

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GeNerAL eLecTrIcAL DATA
3.4 General electrical data
3.4.1 Switching frequency and temperature of the 230 V devices
Device size 10 12 13 14
Rated switching frequency
1)
f
SN
/ kHz 8 4 4 4
Max. switching frequency
1)
f
S_max
/ kHz 16
Min. switching frequency
1)
f
S_min
/ kHz 2
Max. heat sink temperature T
HS
/ °C 90
Temperature for derating the switching frequency
T
DR
/ °C 80
Temperature for uprating the switching frequency T
UR
/ °C 70
Temperature for switching to rated switching
frequency
T
EM
/ °C 85
Table 35: Switching frequency and temperature of the 230 V devices
3.4.2 Switching frequency and temperature of the 400 V devices
Device size 12 13 14 15 16
Rated switching frequency
1)
f
SN
/ kHz 8 8 4 4 2 4
Max. switching frequency
1)
f
S_max
/ kHz 16
Min. switching frequency
1)
f
S_min
/ kHz 2
Max. heat sink temperature T
HS
/ °C 90
Temperature for derating the switching frequency T
DR
/ °C 80
Temperature for uprating the switching frequency T
UR
/ °C 70
Temperature for switching to rated switching
frequency
T
EM
/ °C 85
Table 36: Switching frequency and temperature of the 400 V devices
1)
The output frequency is to be limited in such a way that it does not exceed 1/10 of the switching
frequency.
The drive converter cooling is designed by way that the heat sink overtemperature
threshold is not exceeded at rated conditions. A switching frequency higher than the rat-
ed switching frequency also produces higher losses and thus a higher heat sink heating.
If the heat sink temperature reaches a critical threshold (
T
DR
), the switching frequency
can be reduced automatically step by step. This prevents that the drive converter switch-
es off due to overheating of the heat sink. If the heat sink temperature falls below T
UR
,
the switching frequency is increased back to the setpoint. At temperature T
EM
the switch-
ing frequency is immediately reduced to rated switching frequency. „Derating“ must be
activated, for this function to work.