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14.3.6 Changing to Float Charge from Protection Charge (If applicable)
Table 19 shows the manual procedure to change from protection charge to float charge.
This operation applies to batteries which needs protection charge when over temperature.
(1) The battery is normally being charged at float charge mode.
(2) To prevent the battery thermal runaway, this mode will automatically be changed to protection
charge when a "BATT FAULT1" (Battery over temperature) warning occurs.
(3) In protection charge mode, the battery is automatically charged at a voltage about 5% lower than
float charge.
(4) If the "BATT FAULT1" warning message goes away and a programmed duration is elapsed (about
24 hours), this mode will automatically be changed back to float charge. So, it is not usually required
to change the recharge mode manually back to the float charge.
Table 19 - Changing from Protection Charge to Float Charge.
Step Procedure LCD/LED Status
1 Make sure
PROTECTION LED is
On.
2 Make sure that the
"BATT FAULT1" warning
goes away.
3 Press "FLOAT/EQAUL"
button for 0.5 sec. *
→Change completed.
FLOAT CHARGE is On; EQUAL CAHRGE* LED is Off.
UPS SUPPLY
UPS SUPPLY
AC-VO 480[V]
AC- I O 50[%]
AC-VO 480[V]
AC- I O 50[%]
BATTERIES
AC
SWITCH
UPS
BYPASS
DISCHARGE
FLOAT CHARGE
EQAUL CHARGE
AC INPUT
~
CONVERTER
~
INVERTER
AC OUTPUT
BYPASS INPUT
BATTERIES
AC
SWITCH
UPS
BYPASS
DISCHARGE
FLOAT CHARGE
EQUAL CHARGE
AC INPUT
~
CONVERTER
~
INVERTER
AC OUTPUT
BYPASS INPUT