SMA SC 500U Installation - Manual (Page 64)

SMA Solar Technology AG
64 SC500U-IUS093411 Installation Guide
12 Parameter
This section provides an overview of the parameters of the Sunny Central and their respective
threshold values.
12.1 Parameter Description
The following table shows the parameters that are visible in the user and installer levels. Grayed out
parameters are only displayed in installer mode.
Parameter name Range Default Parameter Description
Ackn –––, Ackn,
NoAckn ––– Ackowledge an error manually
An error can be acknowledged
remotely. See the Sunny Central's user
manual.
CardFunc –––, ForcedWrite,
StoEvtHis,
StoFailHis ––– Saving ring memory with errors and
events on SD card.
ChkGdFrqLo 57 ... 59.8 Hz 59.3 Hz Minimum frequency for Sunny Central
operation.
If the frequency drops below the value
given in ChkGdFrqLo, the Sunny Central
will shut down after the time period given
in ChkGdFrqLoT.
ChkGdFrqLoT 160 ... 300000 ms 160 ms
ChkGdFrqMax 60.5 ... 64.5 Hz 60.5 Hz Maximum frequency for Sunny Central
operation.
If the frequency exceeds the value given
in ChkGdFrqMax, the Sunny Central
shuts down immediately.
ChkGdFrqMin 57 ... 59.8 Hz 57 Hz Minimum frequency for Sunny Central
operation.
If the frequency drops below the value
given in ChkGdFrqMin, the Sunny
Central shuts down immediately.
ChkGdVtgHi 288 ... 321.3 Vrms 304.7 Vrms Maximum voltage for Sunny Central
operation.
The Sunny Central shuts down within 1
second in case the voltage exceeds the
value defined in ChkGdVtgHi.