Figure 8: Increase Ol2 For 60A Rated Current And 40°C - KEB COMBIVERT F6 Programming Manual

Protection functions
The factors for a possible increase of the OL2 curve are selected in such a way
that the lifetime of the power modules is only moderately reduced when the over-
load range is used.
► maximum increase ("2" maximum)
The factors for a possible increase of the OL2 curve are selected in such a way
that the lifetime of the power modules is significantly reduced when the overload
range is used.
This setting should only be selected if it is ensured that this increased OL2 current
is only rarely used.
Example:
The following graph shows the possible increase of the OL2 current limit for an air-
cooled F6 housing 3 with 60A rated current and 4 kHz rated switching frequency at
ru72 act. switch freq
ture 1) of 40°C.
2
1
Figure 8: Increase OL2 for 60A rated current and 40°C
1
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4 kHz and a heat sink temperature
1fghfh
(ru25[1] heatsink tempera-
59