Fronius Primo GEN24, Operating Instructions Manual

Page: 11 / 76

Name Description "StateCode"
name "StateCode"
number
"Long Time Aver-
age Overvoltage
Limit" Mains voltage exceeds the
long-term overvoltage lim-
it ("Long Time Average
Limit"). "Long-term
mains
voltage limit
exceeded" 1117
"Unintentional Is-
landing Detec-
tion." Unintentional islanding
was detected. "Islanding
detected" 1004
Ramp Rates
Ramp rates limit the maximum rate of change of effective power in special situ-
ations. Rising ramps ("Ramp-Up") limit the increase in effective power at the in-
verter AC output. Falling ramps ("Ramp-Down") limit the reduction of effective
power at the AC output of the inverter.
Note that the lowest rate of change is applied if there are multiple rate of change
specifications. An "Irradiation Ramp" can thus be rendered ineffective by, for ex-
ample, a lower "Startup Ramp" or another function affecting the rate of change
(e. g., P(U) or P(F)).
"Ramp-Up at Startup and Reconnection"
When connecting the inverter, the maximum rate of change of the effective
power can be limited by a rising ramp with a defined gradient. As soon as the ef-
fective power increase is influenced due to the available PV power or another
control, the ramp is terminated.
Parameter Range of values Description
"Ramp-Up at
Startup and Re-
connection" On The effective power is limited at the
"Startup" or a "Reconnection" with a
rate of change of "Ramp-Up at Startup
and Reconnection Rate".
Off The function is deactivated.
"Ramp-Up at
Startup and Re-
connection Rate." 0.001
‑
100
[%/s]
Permitted rate of change of the effect-
ive power at "Startup" or "Reconnec-
tion".
"Ramp-Up/Down Irradiation"
The "Irradiation Ramp" is a permanent limitation of the rate of change for the ef-
fective power. If the PV power changes rapidly due to passing clouds, the rate of
change of the inverter output power is limited with the "Ramp-Up Irradiation
Rate" or the "Ramp-Down Irradiation Rate".
Parameter Range of values Description
"Ramp-Up Irradi-
ation" On The effective power increase is limited
with a rate of change of "Ramp-Up Irra-
diation Rate".
Off The function is deactivated.
"Ramp-Up Irradi-
ation Rate" 0.001 - 200
[%/s] Permitted rate of change during power
increase.
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EN