6-50
Related Parameters
The ambient temperature must be set in parameter L8-12.
Fig 6.40 Ambient Temperature Derating Curve
îš‹ OL2 Characteristics at Low Speed
At output frequencies below 6 Hz the overload capability of the inverter is lower than at higher speeds, i.e. an
OL2 fault (inverter overload) may occur even if the current is below the normal OL2 current level (see Fig
6.41).
The special OL2 characteristics can be disabled by setting parameter L8-15 to 0. Generally is not recom-
mended to disable that function as the Inverter lifetime might be shortened.
Fig 6.41 OL2 Alarm Level at Low Frequencies
Parameter
Number
Name
Setting
Range
Factory
Setting
Change
during
Operation
Access
Level
L8-12 Ambient temperature 45 to 60 45 °C No A
0
20
40
60
80
100
0 102030405060
Temperature (°C)
Output Current in % of the
Rated Current
IP00
IP20
OL2 Detection Level
Output
Speed
0 Hz
120% for 1 min.
-6 Hz 6 Hz
60% for 1 min.