Overload Power Components (Ol2) - KEB COMBIVERT F6 Programming Manual

Protection functions

Overload power components (OL2)

The monitoring of the inverter load at small frequencies can be influenced via the
following objects:
Index Id-Text Name
0x2C1B ru27 OL2 counter
0x2A05 pn05 OL2 warning level
0x2C02 ru02 warning bits
0x2A1C pn28 warning mask
0x350E is14 overload protect mode
0x3514 is20 OL2 prot. gain
0x3515 is21 OL2 safety fact.
0x2C49 ru73 Imot/ImaxOl2
0x301E ud30 OL2 current limits
0x301F ud31 OL2 diagnostic counter
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
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.
56
Function
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
(de29 inverter maximum current).
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