– Q constant
– cos ϕ /(p/pn)
– Q(U) 10 nodes
NOTE: Reactive power is prioritised in each method. The maximum possible active power that
can be fed in is reduced in line with the P-Q operating range when a specific reactive power
level is specified.
cos-φ constant
In constant cos ϕ mode, the specified power factor is permanently set by the inverter. in doing so, the reactive
power level is set in line with Q=P*tan ϕ is a function of the power that continuously generates the specified
power factor. If the setting value is changed, the new value is adopted by way of a filter in a muted manner.
The settling time can be parameterized and is 1 s (This corresponds to 5 tau. (The VDE templates usually specify
3 Tau)) with the transient response of a first-order filter (PT-1) with a time con-stant of Tau=200ms. The spe-
cified power factor can be configured on the display or by way of communication via the KACO RS485 protocol
and MODBUS/SunSpec.
If the applicable grid code stipulates that the cos-ϕ should react to the target value slower than the configured
Tau=200 ms by way of a defined gradient or settling time, this gradient or settling time must be implemented
in the system control.
Parameters
Setting
Refer-
ence
Description
cos-phi constant
[OutPFSet]
1-0,3 [°]
Set power factor to a certain value
Settling time
[
OutPFSet_RmpTms]
1000 [ms]
Non-configurable settings 1 s.
Timeout
[
OutPFSet_RvrtTms]
0 – 1000 [s]
Sets the time after which the inverter, if it
does not receive a new power factor spe-
cification, falls back to the previously valid
reactive power procedure.
If the
timeout
is set to
0
seconds, the
transmitted power factor specification is
permanently retained, even in the event of
a communication failure.
Note: when the unit is restarted, the
timeout
is reset to the set fallback time.
Q constant
In Q-constant mode, the specified reactive power value is permanently set by the inverter. If the specification is
changed, the new value is adopted by way of a filter in a muted manner. The settling time is 1s with the transi-
ent response of a first-order filter (PT-1) with a time constant of Tau=200ms. The specified reactive power can
be configured on the display or by way of communication via the KACO RS485 protocol and MODBUS/SunSpec.
If the applicable grid code stipulates that the reactive power should react to the target value slower than the
configured Tau=200 ms by way of a defined gradient or settling time, this gradient or settling time must be im-
plemented in the system control.
Parameters
Setting
Refer-
ence
Description
Q constant
[VArWMaxPct]
0-100 [%
Smax
]
Set the reactive power to a certain % of the
apparent power.
Increasing output gradient
&
Decreasing output gradi-
ent
[VArPct_RmpTms]
1 – 65524 [% Slim min]
Determines the dynamic behaviour in the
event of a change in the reactive power
value. The reactive power is changed with
the specified gradient.
10 | Specifications
Manual
KACO blueplanet 3.0 TL3 KACO blueplanet 4.0 TL3 KACO blueplanet 5.0 TL3 KACO blueplanet 6.5 TL3 KACO
blueplanet 7.5 TL3 KACO blueplanet 8.6 TL3 KACO blueplanet 9.0 TL3 KACO blueplanet 10.0 TL3
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EN
