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TDK-Lambda
EZA2500 series
Quick Manual / Practical (III)
5) Starting from 0V on the battery side using "Battery Ramp Up (Battery bus
ramping up)"
Before starting Up EZA2500, you must apply voltages higher than “Under HVDC Bus Volts
(UGV)” and “Under LVDC Bus Volts (UBV)” to the grid side (HVDC side) and the battery side
(LVDC side), respectively.
Otherwise, the main converter cannot be started, and even if a start command is input, the
alarm is output and it does not start.
However, by using the function of "Battery Ramp Up (Battery bus ramping Up)", EZA2500
can start even when the battery side (LVDC side) is under "Under LVDC Bus Volts (UBV)”. To
use this function, the grid side (HVDC side) must be over "Under HVDC Bus Volts (UGV)”.
"Battery Ramp Up" can be enabled with the BCF parameter. The factory setting is valid.
In the function of “Battery ramp Up”,
①
Charge to “Under HVDC Bus Volts (UGV)”.
②
If the above charging operation does not reach a slope of 24V/s, look at the voltage rise
value every 2seconds, and if the voltage has not changed or has fallen, the “Battery Under
Voltage” alarm is output. Then EZA2500 stops.
The following explains how to set the "Battery Ramp Up" using CNVCommCC.
.
Start CNVCommCC and confirm that it can communicate with EZA.
①
Start CNVCommCC.
