Overload power components (OL2)
The monitoring of the inverter load at small frequencies can be influenced via the
following objects:
OL2 actual value in % of the error-triggering level
OL2 level, where a warning is triggered
Display of the warnings bit-coded (=> 4.3.3 Warnings)
Mask for warning bit in the status word (=> 4.3.3 Warn-
ings)
OL2 protection, no respectively reduced overload capacity
Determines the dynamic behavior in protection mode 2
Parameterization of the safety distance to the OL2 limit
with overload protection
actual current / short time current limit
Current limits resulting from the OL2 function
OL2 diagnostic parameters
4.4.2.1 OL2 function
4.4.2.1.1 Output frequency dependent OL2 current limit
The power components are more loaded by current in lower frequency range than
in higher output frequencies.
Therefore the permissible current (short time current limit) is lower than the maxi-
mum current (de29 inverter maximum current).
The inverter normally outputs at least rated current as continuous current at 0Hz
output frequency and rated switching frequency. The maximum current is available
from maximum 10 Hz as standard. Detailed information can be found in the instal-
lation manual for the corresponding power unit housing size.
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