EZA2500 Series
TDK-Lambda
<Page>
10-2-10. Abnormal Temperature of Heatsink(Primary)
Abnormal temperature at Heatsink (Primary) detection is done through thermistor its detection temperature is about
100 degree C. Signal from the Abnormal detect circuit triggers Abnormal Temperature at Heatsink
B
Primary
C
.
Detect threshold level is fixed.
10-2-11. Abnormal Temperature of Heatsink(Secondary)
Abnormal temperature at Heatsink (Secondary) detection is done through thermistor its detection temperature is about
100 degree C. Signal from the Abnormal detect circuit triggers Abnormal Temperature at Heatsink
B
Secondary
C
.
Detect threshold level is fixed.
10-2-12. Abnormal Temperature of Converter
When converter internal measured temperature exceeds detect threshold level (about more than 53 degree C)
Abnormal Temperature of Converter Alarm is triggered. Detect threshold level is fixed.
10-2-13. System Alert
When Abnormality is detected in this converter, System Alarm will be triggered.
Alarm due to System Alert is not covered by Alarm Recovery procedures.
11 Explanation of Functions and Precautions
11-1. Input Voltage Range
Input voltage range is 36
r
60VDC for LVDC, and 300
r
380VDC for HVDC.
Input voltage which is out of specification might cause unit damage.
11-2. Output Voltage Range
Output voltage setting range is 36
r
60VDC for HVDC and 300
r
380VDC for LVDC.
Set output voltage is via RS-485 communication.
11-3. Constant Current Range
Constant current setting range is 2.4
r
56A for HVDC and 0.5
r
8.5A for LVDC.
Set constant current is via RS-485 communication.
16/22
Attention:
If you want to operate constant current at Regeneration (discharge) mode then set grid under voltage level is in
the HVDC voltage vs LVDC voltage derating curve area.
During operation outside of derating curve the converter cannot operate constant current operation and output
current increases.
In this case the converter will be shut down when the output current is more than 8.7A and the input power of
battery side is more than 2750W.
Example:
Case of regeneration constant current mode operation at 380VDC of output voltage (Grid side) and 60VDC of
input voltage (Battery side), set Grid under voltage level is more than 350VDC.
