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UH53
UH83
UH88
Big step DOWN detection (Level to detect big step DOWN)
Big step DOWN detection (Time delay to follow the step DOWN)
Big step DOWN detection (Time to follow the step DOWN change)
These function codes are related to the big step DOWN detection function. In the event that the PV panel (DC link)
voltage decreases suddenly due to a decrease of the solar irradiance, the inverter will decrease the PV panel (DC
link) voltage set point.
Function code UH53 (Level to detect big step DOWN) is used to set the voltage level difference between PID set
point and PID feedback that triggers the Big step down detection function. In other words, if PID feedback < PID
set point
– UH53 for a time longer than UH83 then the big step down function is triggered. The units of UH53 are in
percentage (%), where 100% means 500 V in case of -2/-7 inverters and 1000 V in case of -4 inverters.
Function code UH83 (Time delay to follow the step DOWN) is used to set the time delay to trigger the step down
function. The time units of this parameter are seconds.
Function code UH88 (Time to follow the step DOWN change) is used to set the time that the PID set point follows
the PID feedback. The time units of this parameter are seconds.
U00
Customizable logic (Mode selection)
U00 (Mode selection) is used to enable/disable the Solar Pumping application. U00 must be set to 1 in order to run
the Solar Pumping application.
U00 data
Function
0
Disable
1
Enable (Solar Pumping application)
The
ecl
alarm will occur when changing U00 from 1 to 0 during operation.
Summary of Contents for Frenic-Sce
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