RU , GSE, FOTO CONTROL, QUATROFREM v.2.53x
15. apríla 2019
Page 30 from 97
A sample disley
Description
W18-AC
undervoltage
Low grid voltage, inverter is not running. Voltage on L1,L2,L3 terminals is lower than the
value of AC Undervoltage [626] (page 74). For the duration of the warning, the value of
AC voltage [221] (page 19) is displayed in FAULTS window.
F19-Start delay
Countdown to start in progress. This time can be set in Start delay [742] (page 40). For
the duration of the warning, the value of ON / OFF time [686] (page 18) is displayed in
FAULTS window.
W20-Reactive
curr. saturated
Reactive power reference generates a current reference that exceeds the maximum
current limit Max. cons. current [5] (page 45) or Max. prod. current [510] (page 45). For
the duration of the warning, the value of reactive current component reference is
displayed in FAULTS window.
W21-VDC cont.
saturated
Current reference at the output of DC controller reached the maximum current limit Max.
cons. current [5] (page 45) or Max. prod. current [510] (page 45). This can cause a
steady state error of DC voltage. For the duration of the warning, the value of active
current component reference is displayed in FAULTS window.
W22-ISQ
cont.
saturated
Reactive current controller saturated, maximum voltage reached. For the duration of the
warning, the value of reactive voltage component usq reference is displayed in FAULTS
window.
W23-ISD
cont.
saturated
Active current controller saturated, maximum voltage reached. For the duration of the
warning, the value of active voltage component usq reference is displayed in FAULTS
window.
W24-Current
unbalance
Inverter side AC currents are unbalanced, possibly due to damaged passive components
of LCL filter or faulty current sensors. This warning can be disabled by [860] (page 76).
For the duration of the warning, the value of I-AC asymmetry [868] (page 19) is displayed
in FAULTS window.
W25-Sum
of
string currents
Sum of currents of individual strings in the group [735] (page 15) is different to the value
of Sum DC currents [634] (page 15) by more than the preset threshold String sum [748]
(page 36). This test can be disabled by String check [747] (page 36). For the duration of
the warning, the value of Sum DC currents [634] (page 15) is displayed in FAULTS
window.
W26-String
balance
Currents of individual strings in the group [735] (page 15) differ from each other by more
than the preset threshold String balance [749] (page 36). This test can be disabled by
String check [747] (page 36). For the duration of the warning, the value of String
unbalance [928] (page 15) is displayed in FAULTS window.
W27-AC
contactor
switched off
AC contactor on the grid side is switched off. This can be caused by incorrect parameters
of the grid, wrong phase order or low voltage of the DC bus of the inverter. This warning
can only occur on FOTO CONTROL inverters.
W28-Grid while
STOP
Grid voltages are detected in off-grid mode while stopped.
W33-Reserved
Reserved
W34-Efficiency
decrease
Value of Inv. efficiency [859] (page 15) dropped below the minimal value given by Min.
efficiency [866] (page 37). This warning can be disabled by Efficiency decrease [865]
(page 36). The value of Inv. efficiency [859] (page 15) is displayed in FAULTS window
during this warning.
W35-Parking PC
Process controller conditions to park the inverter were met (see: Parking [335] (page
68)). For the duration of the warning, the value of Error PC [438] (page 24) is displayed in
FAULTS window.
W36-Grid
fault
delay
Countdown time Grid check time [1192] (page 74) after grid fault
W37-Reserved
Reserved
W38-Reserved
Reserved
W39-Reserved
Reserved
W40-Reserved
Reserved
W41-Profibus
Timeout
Profibus master does not communicate with the Profibus module, or the Profibus module
does not communicate with the inverter for a defined period of time PB Warning timeout
[784] (page 83).
W42-Modbus
Timeout
Modbus master does not communicate with the inverter for a defined period of time MB
Warning timeout [833] (page 81).
W43-Reserved
Reserved
