Srne BP Series User manual

BATTERY
OUT IN
TTL GND
Manual version: V1.01 Subject to change without notice
BP Series Battery Protector
User Manual
Code: 106634

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Dear users:
Thank you for choosing our products!
Safety Instructions
1. The applicable voltage of some controller models exceeds the safety voltage of human
body. Please read the manual carefully before operation and operate the controller only
when the safety operation training is completed.
2. Since no part is required to be maintained or repaired inside the controller, please do
not disassemble and repair the controller.
3. Please install the controller indoors to avoid exposure of components and keep water
away from the controller.
4. Since the cooling fin will be very hot during operation, please mount the controller in a
well-ventilated place.
5. Suitable fuse or circuit breaker is recommended to be equipped outside the controller.
6. Before installing and adjusting the wiring of the controller, be sure to disconnect the
wiring of the photovoltaic array and the fuse or circuit breaker near the accumulator
battery terminals.
7. After installation, check whether all wiring is tightly connected to avoid the danger of
heat accumulation due to loose connection.
Warning: Indicating dangerous operation, and safety preparation is
required before operating.
Contents
01 02
03
03
03
03
04
1. Product Introduction
1.1 Product overview
1.2 Product features
1.3 Appearance and interfaces
06
07
08
08
10
05
05
05
06
05
06
2. Technical Parameters
3. Product Operation and Display
06
3.1 [A] Protector Mode
3.2 [U] System voltage
3.3 [P] Protection level
3.4 Remote switch
3.5 Restore to factory settings
3.6 System indications
07
07
4. Button Functions
5. Communication
6. APP Software (Optional)
10
6.1 Real-time monitoring
6.2 Historical data
6.3 Parameter setting
6.4 Equipment information
10
7. Product Dimensions
8. System Connection Diagram
10
8.1 Charge protector application
Attention: Indicating destructive operation.
Tips: Indicating suggestions and tips to the operator.

1. Product Introduction
03 04
1.1 Product overview
[Battery charge protector] is a device for real-time monitoring and protecting battery charging
voltage, which can prevent the battery from over-charge.
[Battery discharge protector] is device for monitoring and protecting battery discharge voltage,
which can prevent battery from over-discharge. When the battery voltage is too high, it can quickly cut
off the power supply to prevent load equipment damaged.
Charge protector and discharge protector are configurable
It supports the system voltage setting
It supports over-voltage and over-discharge protection level
1 digit 7-segment display for parameter
TTL communication
It supports APP monitoring via Bluetooth (optional)
It is applied to common negative electrode system
1.2 Product features
No. Name
1Protector input (+)
2Protector output (+)
37-segment display
4Button
5TTL communication
interface
6
Remote switch
7
8Protector ground
1.3 Appearance and interface description
Product model BP48100N25BP4885N25
Battery voltage 12V/24V/36V/48V
Static power
consumption ≤50mA
Operating voltage
range 8V-70V
System withstand
voltage 250V
Rated current 60A 85A
Grounding mode Connect to the system common ground(for the common negative electrode system)
High voltage protection
Select by button
High voltage recovery
Low voltage protection
Low voltage recovery
Built-in Bluetooth Optional
TTL communication √
Button √
7-segment display √
Remote switch √
Protection grade IP65, Glued
Certification
Requirements CE ROHS
Operating ambient
temperature range -35℃~65℃
Cooling mode Natural heat dissipation
Dimension 183*96,5*60mm
166*96,5*60mm
Weight 1050g
950g
2. Technical Parameters
BP4860N25
100A
149*96,5*60mm
850g
03
BATTERY
1
2
4
3
67
85
OUT IN

05 06
3.4. Remote switch
3. Parameter Setting
3.1 [A] Protector Mode
3.2 [U] System voltage
3.3 [P] Protection level
Display Setting range Meaning
AC (default) Charge protector
LDischarge protector
Display Setting range Meaning
U
0. Automatic identification
1. 12V
2. 24V
3. 36V
4. (default) 48V
Display Setting range Over-voltage
protection
Over-voltage
protection
recovery
Over-discharge
voltage Over-discharge
restoring voltage Remarks
P
0 15,0V 14.0V 10,7V 12,2V
Customized
1(default) 15,0V 14.0V 10,7V 12,2V
Fixed
value
2 15,5V 13.8V 10,9V 12,4V
3 16,0V 13.6V 11,1V 12,6V
4 16,5V 13.4V 11,3V 12,8V
5 17,0V 13.2V 11,5V 13,0V
Protection/
recovery delay Immediate
response 2s 2s
Configurable
when customized
2s 2s
The parameters shown in the table are for the condition of 25°C/12V, and it should be multiplied
by 2/3/4 for the battery systems with voltages of 24V/36V/48V.
[Charge protector]: Only over-voltage protection value is used up to.
[Discharge protector]: Both over-voltage protection value and over-discharge protection value
are used up to.
[Customized mode]: After the number set to "0", the protection value and over-discharge delay
time can be customized through communication.
[1-5]: Delays are fixed to 2 seconds for overvoltage recovery, over-discharge, and over-
discharge recovery.
Connect: charging or discharging
Disconnect: stop charging and discharging
3.5 Restore to factory settings
Hold down the button for at least 20 seconds until the 7-segment display shows "8.",
then release the button to restore to factory settings.
Restore default items Restore default Default Function
Protector type CCharge protector
System voltage 4. 48V
Protection level 1Refer to" 3.3 "
Operating Statistics Data clearing --
3.6 System indications
Display Meaning
Slow blinking (over-discharge: stop charging and
discharging)
Fast blinking(over voltage: stop charging and discharging)
Fast blinking (over-temperature: stop charging and
discharging)
(The over-temperature of the system is 70°C, The system
will recover when the temperature is below 65°C.)
Slow blinking (Remote switch is disconnect: stop
charging or discharging)
The light turn on for 1s when the system is powered on
and the first communication is connected.
Constant blinking (the protector is working)
4. Button Functions
Button Function
Short press Parameter switching / Mode selection / Setting data increment;
Hold down Hold down: Enter/Exit parameter setting

07 08
6.2 历史数据
5. Communication
1). Default baud rate 9,600bps, check bit: none, data bit: 8bit, stop bit: 1bit
2). Output specification of communication power supply: (12V±3V)/100mA
TTL-COM
No. Definition
①VCC communication power
supply output
②Protector receiver (RX)
③Protector sender (TX)
④GND
6. APP Software (Optional)
6.1. Real-time monitoring
Type APP interface display
Corresponding protector function
Charge protector Solar panel voltage Input voltage of protector
Battery voltage Output voltage of protector
Discharge
protector
Battery voltage Input voltage of protector
Solar panel voltage Output voltage of protector
When the protector is working, the load status is "On";
When the protector is not working, the load status is "Off"
APP interface Corresponding protector function Change the data range
Load operating mode [C] Charge protector Light control
[L] Discharge protector Light control+delay 1h
Temperature compensation factor [P] Protection level selection 0-5
0: customized
System voltage [U] System voltage 12/24/36/48/AUTO
Battery type USE USE Fixed
Over-voltage (V) Over-voltage protection 14,0V~17,0V
Over-discharge reconnect
voltage (V) Over-discharge reconnect voltage 10,0V~15,0V
Over-discharge voltage (V) Over-discharge voltage 7,0V~13,0V
Over-discharge delay(s) Over-discharge delay 2~8S
The lowest and highest battery voltage of the day can be
displayed in real time;
The system operating days add one in every 24h;
Save the number of operating days, over-discharges, and
over-voltages (fully charged times) simultaneously.
Note: Over-discharge reconnect voltage > over-discharge voltage. The over-voltage
recovery value is 1V lower than the current setting value.
6.2. Historical data
6.3 Parameter Setting

09 10
6.4. Equipment information
7. Product Dimensions
[Restore to factory defaults] -- Restore to the factory default setting
[Disconnect Device] -- Disconnect the APP with the protector
[Search Device] -- Search for the protector in the device list via Bluetooth
Product name: BP4860N25
Product dimensions: 166*96,5*60mm
Mounting dimension: 156,5*88,6mm
Mounting hole diameter: φ4,5mm
Product name: BP48100N25
Product dimensions: 183*96,5*60mm
Mounting dimension: 173,5*88,6mm
Mounting hole diameter: φ4,5mm
8. System Connection Diagram
Product name: BP4885N25
Product dimensions: 166*96,5*60mm
Mounting dimension: 156,5*88,6mm
Mounting hole diameter: φ4,5mm
8.1 Charge protector application
+-+
-
BATTERY
OUT IN
TTL GND
6.4. Equipment information