CSE Kingfisher PLUS+, Справочник по аппаратуре

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Superseded Hardware Manual 7.12 Page 7
P S -1 Ba tte ry Ch a rg in g S ta te s
•
Charge State: The power supply starts up in the Charge State. In the Charge State the Power
supply will charge the battery with the highest possible current. This current is determined by the
maximum current the power supply can supply and the maximum battery charge current. The
maximum battery charge current is typically 0.25 * the battery capacity. E.g. if the battery capacity is
6.5 AH the maximum charge current will be 0.25 * 6.5 = 1625 mA. To achieve the desired charge
current the supply voltage will be slowly increased. If the supply voltage reaches 14.25 V at 25 °C the
charge mode will be terminated and the Boost mode will be entered.
•
Boost State: In the Boost State the supply voltage will be maintained at 14.25 V at 25 °C as long as
the battery charge current and the maximum supply current are not exceeded. The Boost State lasts
8% of the charging time. If the charging time was less than 12 minutes the Boost State will be skipped
and the Float State will be entered.
•
Float State: In the Float State the power supply wants to maintain 13.8 V at 25 °C as long as the
maximum supply current is not exceeded. The voltage will be very slowly decreased from 14.25 V
(Boost/Charge voltage) to 13.8 V. The maximum adjustment rate is one adjustment every 2 minutes.
This is done to let the battery float down to this voltage. The float state is also entered when the
power supply is in Charge or Boost mode and AC power is lost. If the AC power returns, the power
supply will enter the Charge State.
•
No Battery State: If the power supply is in any of the above states and the battery current is less
than 10 mA and greater than -10 mA for longer than 5 minutes, then the No Battery state is entered.
In this state the power supply wants to maintain 12.5 V at any temperature. If the battery current
becomes greater than 15 mA or less than -15 mA the No battery state is terminated and the Charge
state is entered.
•
Manual State: If the Manual bit in the power supply is set, the Manual state is entered. In Manual
state there is no control except that the supply voltage will be reduced if the maximum supply current
is exceeded. Resetting the Manual bit will cause the power supply to enter the Charge State.
Float
Vs = 13.8V*
Boost
Vs = 14.25V*
Charge
Ibat = Imax
charge
No battery
Vs = 12.5V
Manual
Vs = user
trim
manual
reset
(Ibat >
15mA or
Ibat <
-15mA)
manual
set
Vs =
14.25V*
(Ibat < 10mA and
Ibat > -10mA
for 5 min.)
AC
returns
AC
fail
8% of
charge time
expired
startup
* These voltages are temperature compensated. The voltage shown is the voltage at 25 °C. The
voltages are increased by 22 mV for each degree Celsius the temperature decreases. If the
temperature is 80 °C or -20 °C (minimum or maximum values) the temperature sensor is assumed to
be faulty. An error will be flagged and a temperature of 25 °C will be assumed.