Woodward easYgen-3000XT Series, Manual, Page: 372 / 1205

To control the PV inverter, the easYgen3000XT calculates next:
• The AM variable 10.39 PV load ref. [%] (PV set-point value 0% - 100%, can be •
transferred to the PV inverter over an analog output)
• LM command variables (in applications using discrete load steps these LMs can be •
transferred to the PV inverter over several digital outputs):
◦ 04.74 PV load ref. 0% ◦
◦ 04.75 PV load ref. 30% ◦
◦ 04.76 PV load ref. 60% ◦
◦ 04.77 PV load ref. 100% ◦
In addition, the variable ”10.39 PV load ref. [%]“ (ID 9766) can be sent to the PV inverter
via MODBUS TCP using the MODBUS MASTER (
╚═▷ “6.5.5 Modbus master” )function of the
easYgen3000XT. It is indicated also in ToolKit with a gauge.
The regulation output (analog or in steps) is treated as follows:
• If the Function is disabled (by parameter ╚═▷ 8911 ), the output "10.39 PV load ref. •
[%]" is 0%.
• If the Function is enabled and LM ”Release PV regulation“ (parameter ╚═▷ 8928 ) is •
FALSE, the output 10.39 PV load ref. [%] is 100% and 04.77 PV load ref. 100% is
TRUE.
• If the Function is enabled and LM ”Release PV regulation“ (parameter ╚═▷ 8928 ) is •
TRUE, the output 10.39 PV load ref. [%] shows the current PID value and the
corresponding LM "PV load ref." is TRUE.
To provide a proper function the PV reduction must be tracked slowly. Reverse power of
the generator must lead to an instant cut of the PV load.
372 easYgen-3000XT Series B37574
4 Configuration
4.4.4.5.6 Photovoltaic (PV) load reduction regulated mode
Released