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[2] DC voltage to be supplied
Supplied DC voltage should be between the UV voltage and the OV voltage (or BRD ON level) of the inverter.
Model name
J100
200V class
400V class
J300
200V class
400V class
L100
200V class
400V class
SJ100 200V class
400V class
L300P 200V class
400V class
SJ300 200V class
400V class
Ø If it is higher, inverter may trip with OV or BRD error.
Ø If it is lower, inverter may trip with UV.
[3] Cautions
Case 1 : Connected parallel to a common DC net
DC power
supply
Main power (AC)
For Cases 2 & 3
DC bus voltage
For Cases 1~3
DC-DC conv.
(internal 5V)
EEPROM store
period
UV level
140Vac ~ 160Vac
280Vac ~ 320Vac
140Vac ~ 160Vac
280Vac ~ 320Vac
190Vdc
10Vdc
395Vdc
20Vdc
Same as L100
200Vdc
10Vdc
400Vdc
20Vdc
Same as L300P
Big inrush current at
power ON
INV #1
INV #2
INV #n
OFF
BRD ON level
OV level (regen.)
(V-SET) +137.5V
390Vdc
(V-SET) +275V
780Vdc
(AVR set) +138V
369Vdc ~ 404Vdc
(AVR set) +276V
756Vdc ~ 827Vdc
395Vdc
-
790Vdc
370Vdc +4%,-3%
740Vdc +4%,-3%
395Vdc
-
790Vdc
Adjustable by
Same as L300P
[b096]
Ø Take preventive measures to limit inrush current at power ON,
since the integrated inrush current limiting circuit is not used.
à Otherwise there will be a unexpected UV at net side or
damage to the inverter caused by V=di/dt.
M 1
Ø Use DC chokes for each inverter to avoid interaction due
to surge and/or harmonics.
à Otherwise there may be an unexpected failure of the
inverter or other attached equipment.
M 2
Ø Take preventive measures to ensure sufficient time between UV
level and dead voltage of the DC/DC converter (*1) at power
OFF. This is to allow ample time for EEPROM to store
the existing data at power OFF. ( t ; see below)
à Otherwise there is a possibility of an EEPROM error at
the next power ON.
M n
UV level
Threshold voltage of DC-DC converter
(This value depends on the inverter model.
t
(*1) The required time depends on the parameters
Around 0.5~1s or more
which have changed before power OFF.
OV level (source)
15Vdc
30Vdc
Aprx. 365Vdc for 100s
20Vdc
Aprx. 730Vdc for 100s
40Vdc
Same as L100
Same as L100
Aprx. 380Vdc for 60s
10Vdc
Aprx. 760Vdc for 60s
20Vdc
Same as L300P
But in general it is around 100Vdc)
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