Weco 4K8T User manual

1
Lithium Battery
Model:
4K8T
48V 100Ah
User Manual

2
Copyright WeCo SRL
Without consent of the Company, no unit or individual may excerpt or duplicate the document in part of
in whole, or disseminate any content in any way.
Trade mark Gazette
and other trademarks of WeCo SRL, and all other trademarks or registered trademarks
as referred to herein belong to their respective owners.
Declaration
1. The Manual covers the detailed specification of lithium iron phosphate battery pack; please read the
instructions carefully before operation and comply with relevant industrial safety regulations. We accept
no responsibility for damages arising from improper operation or any operation in violation of provisions
as stipulated herein.
2. The document is subject to change by virtue of product version update or other reasons without prior
notice. Unless otherwise agreed herein, the document is only used as the guideline, and no presentations
or suggestions may constitute any express warranty.
Contact Information:
Address: Viale Kennedy 113-121 Scarperia e San Piero Firenze,Italy
Tel: [phone]

3
Using a special tool:
Static-free:
Disconnect the power supply in operation:
Disconnect the power supply in operation:
Safety Instruction
Please read the safety instructions before operating the equipment. The safety precautionary
measures as mentioned herein are only used as the supplement to all safety precautions, without
representing all safety precautions to be complied with. Please comply with local safety rules and
regulations when installing, operating and maintaining the equipment. Only trained professionals are
allowed to install, operate and maintain the equipment, and WeCo assumes no responsibility for losses
arising from violating the general safety operation requirement or violating the safety standard for
equipment design, production and use. Installation and maintenance personnel must have the technical
ability of operation in high voltage and AC power supply. Do not wear any conductive object such as
watch, chain bracelet, bracelet and ring when installing, operating and maintaining the equipment, and
keep the equipment away from moisture.
Static electricity would damage veneer on the electrostatic sensitive components; before touching the plug-
in, circuit board or chips, make sure to use correct electrostatic prevention measures.
When operating the power supply, you must first cut off power supply, live operation is prohibited.
Power system provides DC regulated power supply. DC short circuit could cause fatal damage to the equipment.
The high voltage power supply offers the equipment power; direct contact or indirect contact through
wet object with high-voltage power supply may cause fatal danger.
Working in high voltage and AC power, make sure to use a special tool instead of individual tools.
Danger！High Voltage

4
目录Content
1. 产品介绍 Product Introduction............................................................................... 6
2. 技术规格 Technical Specification ............................................................................ 8
2.1 电池组规格参数 Specification Parameters of Battery Pack................................ 8
2.2 指示灯说明 Indicator Instruction................................................................... 9
2.2.1 容量指示 Capacity Indicator................................................................ 9
2.2.2 状态指示 Status Indicator ................................................................... 9
2.2.3 LED 闪动说明 LED Flashing Instruction ..............................................10
2.3 安装指导 Installation Guide .........................................................................10
2.3.1 安装 Installation................................................................................10
2.3.2 接地连接 Grounding Connection .........................................................10
2.3.3 电池组并联 Battery Pack in Parallel .....................................................10
2.3.4 启动系统 Start-up System..................................................................10
2.3.5 通讯口连接 Communication Port Connection........................................10
2.4 操作指导 Operation Guide...........................................................................10
2.4.1 开机 Power On..................................................................................10
2.4.2 关机 Power Off .................................................................................11
2.4.3 充电 Charging ..................................................................................11
2.4.4 放电 Discharging ..............................................................................14
2.5 监控通信 Monitoring and Communication......................................................14
2.5.1 通讯接口定义 Communication Interface Definition ................................14
2.5.2 监控页面 Monitoring Page ..................................................................14
2.5.2 监控页面 Monitoring Page ..................................................................14

5
3. 注意事项 Precautions...........................................................................................15
3.1 安装注意事项 Installation Precautions ..........................................................15
3.2 操作注意事项 Operation Precautions ............................................................16
3.3 维护注意事项 Maintenance Precautions ........................................................16
3.4 常见问题分析及解决方法 FAQ and Troubleshooting .......................................17
3.4.1 欠压告警 Undervoltage Alarm.............................................................17
3.4.2 放电过流保护 Overcurrent Discharging Protection ................................17
3.4.3 温度保护 Temperature Protection .......................................................17
3.4.4 电池无电压输出 No Voltage Output from Battery..................................18
4. 包装、运输、存储 Packaging, Transportation and Storage.......................................18
4.1 包装 Packaging ..........................................................................................18
4.2 运输 Transportation....................................................................................18
4.3 存储 Storage..............................................................................................18
4.4 环境条件 Ambient Conditions.......................................................................18
5. 配件 Accessories ................................................................................................19
6. 电池参数 Battery Parameters................................................................................19

6
1. Product Introduction
The integrated lithium iron phosphate battery pack for communication use consists of lithium
module and battery management system. High-performance battery management system (BMS), which
have functions such as overcharging, over-discharging, over-current, over-temperature, under-
temperature short-circuits protection and 20A current limitation, as well as RS232 and RS485
communication ports, could communicate with computers, read parameters of battery pack and monitor
status of battery pack in real time.
The product, characterized by integration, miniaturization, light weight, no need of operator on duty,
easy use and maintenance, energy conservation, environmental protection, etc., has been widely used
as back-up power source in the communication field such as access network equipment, remote
exchange, mobile communication equipment, transmission equipment, satellite earth station and
microwave communication equipment.
The diagram of the product’s front panel is shown as below:
1. 正极端子 Positive terminal 2.负极端子 Negative terminal 3.断路器 Circuit breaker 4.挂耳
Hangers 5.拉手 Handle 6.复位键 Reset 7. RS485 通讯接口 RS485 communication port 8.RS232 通讯
接口 RS232 communication port 9. ADS 地址扩展拨码 Address extension dial 10. 运行指示灯 Run
indicator11. 告警指示灯 Alarm indicator 12. DO 输出 DO output 13. 容量指示灯 Capacity indicator 14.
接地线点 Grounding terminal

7
All functions are introduced as follows:
（1）Instruction on indicator when charging battery
⚫ 4 capacity indicators (CAPACITY) will display according to current battery capacity;
⚫ The run indicator (RUN) will flash every other 1S
⚫ When 4 capacity indicators of battery are normally on and RUN light is off, the battery is fully
charged.
（2）Instruction on indicator when discharging battery
⚫ RUN indicator is normally on
⚫ 4 capacity indicators (CAPACITY) will display according to the residual capacity of battery when
discharging.
⚫ When discharging to the protection voltage, the battery goes into the protection status andall
indicators of battery are off.
（3）Battery alarm
In case of battery fault, ALM light shows red and battery fault alarm gives warning.
（4）ADS dial
The dial switch is located on the right of guard plate socket, with the shape as follows:
The dial switch is used to control the address of protection panel. The dial control is a way to
control address by binary system; as shown in the above diagram, 1 shows the least significant bit

8
and 4 shows the most significant bit. When dialing to the upper side, each bit means 1; when
dialing to the lower side, each bit means 0.
（5）RS232 Monitoring Port
RS232 serial communication is adopted to upload data of battery system; RS232 serial port could realize
centralized background monitoring on the battery system, and transmit the battery system working
status, alarm information, etc. to the remote monitoring center so as to realize remote monitoring.
（6）RS485 Communication Port
RS485 cascade connection communication port. During system cascade connection, RS485
communication way is adopted for the internal Pack system after RS485 serial communication cascade
connection is adopted for data transmission, and the master system acquires Slave Pack data through
Master Pack. Please refer to the specification sheet for the PIN definition of RS485.
（7）Current breaker
Control the battery on & off. When the battery is suffering from short circuit or high current surge, the
current breaker will turn off to effectively protect the battery pack.
（8）RST key
RST: represents resetting; in case of system exceptions, the RST key could be used to reset and recover
the system to the normal operation.
⚫ When BMS is in a dormant state, press RST for 3S then loosen it, the protection panel will be
activated, LED indicators will be lighted up for 0.5S for “RUN” in turn.
⚫ When BMS is in an activated state, press RST for 3S then loosen it, the protection panel will be
dormant, LED indicators will be lighted up for 0.5S from the minimum electricity volume light in turn.
⚫ When BMS is in an activated state, press RST for 6S then loosen it, the protection panel will be
reset, all LED indicators will be simultaneously lighted up for 1.5S.
（9）Sleep and wake up
Sleep
When any one of the following conditions is met, the system enters a low-power mode:
1) Single or overall over-discharge protection has not been released within 30 seconds.
2) Release the button after pressing the button for 3 seconds.
3) The lowest cell voltage is lower than the sleep voltage, and the duration reaches the sleep delay
time (at the same time, no communication, no protection, no balance, and no current are met).
4) The standby time is more than 24 hours (no communication, no charging and discharging, no
mains).

9
5) Forcibly shut down through the host computer software.
Before entering sleep, make sure that there is no charger connected, otherwise it will not be able to
enter low power consumption mode.
Wake up
When the system is in low-power mode and meets any of the following conditions, the system will
exit the low-power mode and enter the normal operation mode:
1) When the charger is connected, the output voltage of the charger must be greater than 48V.
2) Press the button for 3S, then release the button.
3) Connect the communication line and turn on the host computer software (because of the over-
discharge protection and enter the dormant state, this method cannot wake up the protection board).
Remarks: After single or overall over-discharge protection, it enters low-power consumption mode,
wakes up every 4 hours and turns on the charge and discharge MOS. If it can be charged, it will exit the
rest
Sleep state enters normal charging; if it fails to be charged after 10 consecutive automatic wakeups,
it will no longer wake up automatically.
When the system is defined as the end of charging, the recovery voltage is not reached after 2 days/48h
of standby (standby time setting value), and it is forced to resume charging until the end of recharging.

10
2. Technical Parameters
2.1 Specification Parameters of Battery Pack
Nominal Voltage
48V
Nominal capacity
100Ah
Structural dimension of battery pack
W×D×H(mm)
440*480*134mm 3U
Weight
Around 42kg
Delivery voltage
49.2V-50.2V
Discharging cut-off voltage
37.5 V
Charging voltage
54.75V
Monitoring communication
RS232、double RS485 communication port
Charging current limitation
0～20A（the limit current function is closable）
Maximum continuous discharging current
100A
Maximum continuous charging current
100A（When turning off the limit current function）
Internal Resistance
≤80mΩ
Installation Method
19 inch rack mount, wall mount, floor mount, portal frame
mount
Working Environment
Charge：0~55℃， Discharge：-20℃～﹢65℃； humidity：
≤95%；altitude：≤2000m
Protection Function
Overcharging, over-discharging, short-circuit, overload and
over-temperature