4.4 Battery charger(BC-6158)
4.4 Battery charger (BC-6158)
4.4.1 Connection of battery charger and battery monitor circuit
Battery charger BC-6158 is controlled from the battery control panel of the console
panel.
BC-6158
05P0607
TB3
BATT CH. SW
AUTO
OFF
CHARGE
4. BATT+
5. BATT-
3. (+)BATT OUT
4. (-)BATT OUT
6. CHARGE
3. CHRG-L
CHARGE
EMG
Lamp
K1
T1
A
V
EMG LIGHT
6. LAMP 2(NC)
7. LAMP 1
AC iN
ON
OFF
REC
IN USE
MF/HF SSB
1. 24V
2. EMG L
RC-1800T only
60A
Illuumination
Lamp
TB2
TB1
AC FAIL
1. BATT IN+
2. BATT IN-
Battery
24V Back-up
24V Back-up
SB-180
Primary system
5. 24V
7. 0V
Duplicate system
24V
Back-up
24V OUT
AC FAIL
24V
Back-up
AC100/220V
1. AC(U)
2. AC(V)
PR-850A
PR-850AR(RC-1800T)
PR-300
1. (+)BATT OUT
2. (-)BATT OUT
AC100/220V
AC100/220V
Fig. 4.4.1 Connection of battery charger and battery monitor circuit
The battery monitor circuit (05P0607) monitors battery voltage.
If battery voltage drops to 22 V, [LOW] indicator comes on and the buzzer sounds.
With “BATT CHARGER switch” set to “AUTO”, the charger starts charging the battery
when the battery voltage drops to 24.5 to 25.0 V, and stops charging when the battery is
charged by 28.0 to 28.5 V automatically. If the switch is set to “MANUAL”, the battery
is charged in continuity. The signal to control charging is “3. CHARGE-L” signal which
turns ON/OFF relay K1 on the AC power supply line of BC-6158.
AC FAIL signal from PR-850A (AR), a contact signal of the relay is output when AC
supply is turned “OFF” and switched to the battery.
This signal is supplied to “2. EMG-L” of the battery monitor board to indicate “IN
USE”. This signal is also supplied to FS-5000/2550/1562-25 and automatically reduces
the transmission power to 60 to 70 W.
Note) The “AUTO” position is provided to prevent over discharge of the battery.
This “AUTO” position is not intended to use both the battery and AC/DC supplies
at the same time for so called “floating operation”.
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3.4 BC-6158
3.4 BC-6158: Battery charger unit
CR2
R3/4
C3
(0.01ohms)
Q1
R1/2
(0.5Ω/50W)
Rectifier
(U2)
S1: 60 degrees
thermal sensor
T1
Rectifier
(U1)
05P0659 board
Breaker: :30A
(CP1)
C1
K1
(Input rlay)
Upper terminal:TB2
Lower terminal:TB1
TB3
Fig. 3.4.1 BC-6158
VR1
VR2
(Over voltage ADJ. VR.:
Adjust to 28V)
(Over current ADJ. VR.:
Adjust to 20A)
Q1
05P0659
R3/4
(0.01ohms)
S1: 60 degrees
thermal sensor
Fig. 3.4.2 BC-6158 left side
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