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8.3.6 Changing to Floating Charge etc. (for MSE individual battery)
Table 8.7 shows the procedure used to change manually from protective charge to floating
charge.
This operation does not apply to shared battery systems.
(1) An MSE battery normally operate in floating charge mode.
(2) To prevent the battery temperature from rising, the mode changes automatically to
protective charge mode when a "BATT FAULT1" (BATTERY OVER TEMP.) warning
occurs.
(3) In protective charge mode, the battery is automatically charged at a voltage about 5%
lower than normal (floating) charge when the battery temperature has risen above the
rated value, in order to prevent deterioration caused by excessive charging at high
temperatures.
(4) After a set amount of time has elapsed (about 6 hours), if the "BATT FAULT1"
(BATTERY OVER TEMP.) warning message has disappeared, the mode will
automatically change back to floating charge. As a result, it will not normally be
necessary to change the mode manually as described below.
Table 8.7 Changing from Protective Charge to Floating Charge
Step Procedure LCD/LED Status (After Execution)
1 Check to make sure
that the
"PROTECTION" LED
is lit..
2 Check to make sure
that the
"BATT FAULT1"
warning message has
disappeared.
3 Hold down the
"FLOAT" key (h in
Figure 6.3.1 on page
14) for at least 0.5
second.
→ Change to floating
charge is complete.
The "FLOAT CHARGE" LED lit.
The "PROTECTION" LED unlit.
UPS SUPPLY
UPS SUPPLY
AC-VO 200[V]
AC-
I O 50[%]
AC-VO 200[V]
AC-
I O 50[%]
BATTERIES
AC
SWITCH
UPS
BYPASS
DISCHARGE
FLOAT CHARGE
PROTECTION
～
AC INPUT
～
CONVERTER
～
INVERTER
～
AC OUTPUT
BYPASS INPUT
～
BATTERIES
AC
SWITCH
UPS
BYPASS
DISCHARGE
FLOAT CHARGE
PROTECTION
～
AC INPUT
～
CONVERTER
～
INVERTER
～
AC OUTPUT
BYPASS INPUT
～