16
OPERATING
GB
CONTROL SIGNALS (ONLY SBC 250 ADV)
The battery charger has a 9-pin female connector (connector DB9, see fig..4) on which the analog si-
gnals can be seen and used to monitor and control the equipment.
The position and description of the signals on the connector are listed below:
BASIC STATE OF BATTERY CHARGER
Description
Positive MASTER output (650mA max). By drawing 100mA the error is less than 0.7%.
Positive SLAVE A output (650mA max). By drawing 100mA the error is less than 0.7%.
Not connected or if it present, positive SLAVE B output (650mA max). By drawing 100mA the error is less
than 0.7%.
Basic state of battery charger (open collector output, 20 mA max).
Battery charger total current positive shunt (10 mA max). The transduction ratio is 100mV/100A.
GND signal 1 (V master).
GND signal 2 (V slave A).
GND signal 3 (V slave B, if it present).
Battery charger total current negative shunt.
Connection PIN 4
HIGH IMPEDENCE
GND
State
OFF or PROBLEMS
ON WITHOUT PROBLEMS
For a wiring example of control signals look at figure 3b.
Number
1
2
3
4
5
6
7
8
9
The position and description of the signals on the connector are listed below.
CHARGE
PO
WER
FLO
A
T
CHARGE
PO
WER
FLO
A
T
1
2
3
4
5
6
7
8
9
CONTROL PANEL
LED
SIGNAL CONTROL
CONNECTOR
FIG. 4
SLAVE A MASTER