INSTRUCTION MANUAL
EZA11K Series
TDK-Lambda
<Page>
1. Over View
1-1. System Construction Example
Example of power conversion system is below. This example is constructed in Manual CV Mode meaning the
power conversion direction is controlled by Host System.
Example of multiple connections
Operation
Generation (Charge) means that power conversion is from HVDC to LVDC.
Regeneration (Discharge) means that power conversion is from LVDC to HVDC.
Current polarity is positive at generation and negative at regeneration.
Note:
When attach the battery or large capacitance capacitor, please use the line over 1.5M to connect the device to
the converter terminal.
Bi-directional converter has a noise filter inside.
However if there is an operation issue due to noise on the DC-bus, please add another noise filter outside of
the converter.
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Bi-Directional Converter 1
Bi-Directional Converter 2
MCCB
MCCB
MCCB
MCCB
MCCB
MCCB
HVDC
（
Grid
）
LVDC
（
Battery
）
Bi-Directional Converter
EZA11K
320V
＋
－
240V
MCCB
MCCB
Battery
＋
－
＋
－
BMS
Battery
Management System
Host System
(e.g. PLC)
External Signal
HVDC BUS
（
Grid
）
Regeneration (Discharge) -
Generation (Charge) +
