LS LSUM 048R6C 0166F EA DC, User Manual

Page: 10 / 17

10/18
User Manual
Monitoring
connector
4
3
2
1
5V
GND
5V
4
3
2
1
Black
White
Red
TEMPERATURE
Not used
Over Voltage Alarm
GND
LED
R2
R1
1kΩ
User circuit
Normal levels OFF
Over voltage ON
Cell voltage
condition
LED
LSUM 048R6C 0166F EA DC
<Fig. 5-2> Typical output signal receiver circuit to the monitoring connector
APOT265 / APOT230 / APOT250
- Pin 1 is connected with monitoring connector output signals receiver circuit’s ground.
The output signals are isolated from the capacitor voltage and from chassis ground.
-When a cell in the module goes into over voltage condition, pin 2 has alarm signal. When
every cell voltage is not over voltage state, the output of Pin 2 is high. If any cell in the
module is exceeding normal voltage, the voltage balancing circuit becomes active and
starts to discharge the cell to become normal voltage range. Then the output of Pin 2 goes
low. At this time, user should stop charging. However, in order to use the signal, the user
needs to attach a pull-
up resistor(typically 1kΩ) to pin 2 and a 5V supply.
- When the cell voltage is below the threshold, the voltage balancing circuit becomes
inactive and the cell stop discharging. At the same time, the output of Pin 2 goes high. Pin
2 output is indicated by LED. The output signal receiver circuit is as following.
-Pin 3 is not used.
-Pin 4 is connected with a NTC thermistor for temperature monitoring.
According to temperature variation in the module, the resistance of the thermistor is
determined. The resistance is 10KΩ with one
-percent error, when the internal temperature
in the module is 25
℃
. Temperature inside module can be indicated by resistance
between pin1-pin4.