JFY tech SCM48100 User manual

SCM48100 User Manual Preface
Solar Controller-SCM48100/200
User Manual
Shenzhen JingFuYuan Tech. Co., Ltd.

SCM48100 User Manual Preface
1
[Attention]
Please read the user manual carefully before operation in order
to comprehend the correct usage of the equipment. This manual shall
be properly preserved after reading for future reference.
本设备的输入、输出电压为危险的高压，会危及人的生命安
全。请严格遵守机器上和手册中的所有警告及操作说明。非
授权的专业维修人员请勿拆下本设备的机箱外盖。
警 告
警告
Warning
本设备的输入. 输出电压为危险的电压， 会
危及人的生命安全。请严格遵守机器上和本
手册中的所有警告及操作说明。非授权的专
业维修人员请勿拆下本设备的机箱外盖。
The input and output voltage of this equipment
is dangerous voltage which can endanger
people’s life safety. Please strictly abide by all
warnings and operation instructions in the
machine and this manual. Only professional
repair personnel are allowed to disassemble the
outer cover of crate of this equipment.
1. Please read this user manual carefully before use of the equipment. Use the equipment
according to the requirements of user manual.
2. Please do not touch power input/output line during operation of this equipment to prevent
electric shock.
3. Please do not open the outer cover of the equipment by yourself. Otherwise, danger of
electric shock exists.
4. Disconnect solar panel switch first and then backup battery switch under any emergency.
5. Make sure the equipment is reliably grounded before connection.
6. The backup battery pack shall be kept far away from combustion source and all electrical
equipment easily causing spark to avoid danger or unnecessary losses.
7. Do no open or damage the backup battery, for the overflowing electrolyte is corrosive and
harmful to human body.
8. The charging voltage required by backup battery with different brands and of different
types differs. Therefore, it is required to confirm that the charging voltage of equipment is
matched with backup battery. Please consult with the manufacturer for support if you have
any doubt.
9. Please consult with the professionals of distributor or an authorized service shop if you

SCM48100 User Manual Preface
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have any question. Do not handle the equipment without authorization.
10. This equipment must be installed and repaired by professionals.
11. Parameters in equipment menu shall not be set at will. They shall be set by professionals,
or the user may consult with the manufacturer.
12. Changes of system configuration, structures and components will affect the performance
of the equipment. Please consult with the manufacturer first before making such changes.
13. Make sure the return temperature is within the range of normal working temperature
before use of the product. It is recommended to keep the product still for 24 hours within the
range of working temperature before startup.

3
Table of Contents
Chapter 1 Overview……………………………………………………………………4
1.1 Product Characteristics......................................................................................................4
1.2 Technical Indexes of Product................................................................................4
Chapter 2 Basic Principle and Structure ........................................................................6
2.1 Block Diagram of Working Diagram....................................................................6
2.2 Block Diagram of Principle of Controller.............................................................6
2.3 Function Introduction to Each System Unit.........................................................8
2.4 Outer Structure of Cabinet and Installation Instructions..................................9
2.5 Wiring and Operation...........................................................................................10
2.5.1 Attentions............................................................................................................................10
2.5.2 Description of Terminal Blocks........................................................................11
2.5.3 Operation...........................................................................................................................11
2.6 Description of Signal Interfaces..........................................................................12
2.6.1 Monitoring RJ45 Signal Interface...................................................................12
2.6.2 Definitions of Sockets on Signal Adapter Plate..............................................12
2.7 Description of Human-machine Interface Displayed in LCD Display Panel..14
2.7.1 LED Indicator Lamps on Monitoring Panel...................................................14
2.7.2 Operation Instructions of Functions of Button on Front Panel....................15
2.8 Configuration of Monitoring Parameters...........................................................15
Chapter 3 Instructions to Maintenance ........................................................................17
3.1 Preventive Periodical Maintenance.....................................................................17
3.2 Steps of Fault Maintenance..................................................................................17
3.3 Steps of Maintenance Operation..........................................................................17
3.4 Maintenance of Solar Photovoltaic Panel...........................................................18
3.5 Other Maintenance...............................................................................................18
3.6 Diagnosis of Common Abnormal Problems.......................................................18
Chapter 4 Transport and Storage..................................................................................20
4.1 Transport...............................................................................................................20
4.2 Storage....................................................................................................................20
Chapter 5 About JFY....................................................................................................21

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Chapter 1 Overview
1.1 Product Characteristics
Provide 2 channels of solar sub-array interface, 1 channel of backup -48Vdc power input
interface and 2 channels of battery input interface;
Complete battery management, oil engine management and power system monitoring
functions, e.g. power-off of primary load and secondary load, power-off of battery,
conversion of equalized charging and float charging of battery, battery charge
current-limiting, battery temperature compensation, etc.;
Configure monitoring unit, realize functions of detection of analog quantity of the
system as well as status reporting and control, and have RS485/RS232 communication
interfaces;
The monitoring module stores abundant historical alarm records and is able to gather
statistics on daily generating capacity, monthly generating capacity and annual
generating capacity;
Detection of ambient temperature and humidity, battery temperature and environmental
variables; access control, water immersion, fan failure alarm, etc. and detection of input
dry contacts. Dry contacts are output in 6 channels to report alarm information;
Heat dissipating method of cabinet: The opening and closing of fan is intelligently
controlled;
Lightning protection: Each channel of PV component input is fitted with lightning
protection with protection level of 20KA(8/20us);
Wiring method: Incoming and outgoing lines on front panel and full front maintenance
1.2 Technical Indexes of Product
TABLE 1-1 MAIN TECHNICAL INDEXES OF SCM48100 MODEL

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Indexes and specifications are subject to change without notice.
Technical characteristics and
parameters
Description
SCM48100
Remark
Default rated output voltage
(V)
54.0
/
Rated output current (A)
100
/
Maximum photovoltaic input
power (kW)
5.7
/
Maximum current of
photovoltaic array (A)
44
Single channel of PV input
Maximum photovoltaic input
voltage (V)
260
The module starts when the input is not lower
than 70Vdc.
Range of MPPT working
voltage (V)
70~250
Number of single channel PV input groups:
Three serial connections and three parallel
connections
Range of output voltage
(settable V)
42.0~58.0
Adjusted through monitoring module
Input overvoltage protection
point (V)
260±5
Input overvoltage protection of MPPT module
Input overvoltage protection
recovery point (V)
250±5
Self-recoverable
Output overcurrent protection
range (A)
101~110
/
Output overvoltage protection
range (V)
58.5~60
Input overvoltage protection of MPPT module
(default: 59Vdc)
MPPT module efficiency
>95%
150Vdc input; load test above 50^
Utilization rate of photovoltaic
module
>99%
The output power is tested within load range
with rated power of 5% and above, including
when the input power is quickly changed.
Service ambient temperature
(℃)
-20~+55
/
Service altitude (m)
≤3000
When the altitude exceeds 3,000m, the output
power is de-rated by 10% for each 50mm
ascended.

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Chapter 2 Basic Principle and Structure
2.1 Block Diagram of Working Diagram
FIGURE 2-1 BLOCK DIAGRAM OF WORKING PRINCIPLE OF SCM SERIES SOLAR CONTROLLER
2.2 Block Diagram of Principle of Controller
The principle of SCM48100 solar controller is shown in the following diagram:

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As shown in the diagram above: 2 channels of sub-array input are directly output to
RTN+ and VBUS- bus bar via circuit breaker protection, surge protection and MPPT
module conversion.
The cathodes of 2 channels of battery are connected to BATTERY1- and BATTERY2-
input interfaces respectively. They gather together through two 100A circuit breakers.
Then, they are connected to VBUS- bus bar via battery power-off DC contactor
(100A/48V) and battery shunt (100A/75mA); the anodes of 2 channels of battery are
directly connected to RTN+ bus bar. Single group of battery access port has reverse
connection protection function.
After cathode of backup DC power supply is connected to DC- input interface, it is
directly connected to VBUS- bus bar (M6 self-clinching nut); backup power supply DC+
is directly connected to RTN+ bus bar (M6 self-clinching nut).
One terminal of load shunt (100A/75mV) is directly connected to VBUS- bus bar, while
the other terminal is connected to secondary load normally closed DC contactor KMD1.
The other terminal of the contactor is connected to “Secondary Load” air switch
(LOAD1~3) and provides 3 channels of “Secondary Load” user shunt; meanwhile, the
other terminal of load shunt is connected to secondary load normally closed DC
contactor KMD2. The other terminal of the contactor is connected to “Primary Load” air
switch (LOAD4~7) and provides 4 channels of user shunt. The anodes of 7 channels of

Solar Controller-SCM48100 User Manual
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user loads are directly connected to RTN+ bus bar (M5 self-clinching nut is used at the
anode of primary load, while M4 self-clinching nut is used at the anode of primary load).
2 channels of solar sub-array input lightning protection unit provide lightning protection
with protection level of C: The nominal discharge current is 20KA (8/20us).
2.3 Function Introduction to Each System Unit
Notes:
○
1. RTN+: Anode copper bar of the system (when the system needs negative pressure output, use
the conductor to connect this copper bar with PE copper bar);
○
2. 2 MPPT modules;
○3. Signal adapter plate;
○4. Monitoring module;
○5. PV1(+) or PV2(+): 2 channels of sub-array input circuit breaker;
○6. PV1 SPD and PV2 SPD: Each channel of sub-array input lightning protection module
protection unit;
○7. PE: Connected to ground copper bar;
○8. DC-: Cathode interface of backup DC power supply (-48Vdc);
○9. Emergency Button: Emergency button (when storage battery is connected, MPPT module has
no output, and the battery control circuit is in a power-off status, the user may press on this
button until the sound of closing of contactor is heard. Then, the battery control circuit is in a
power-on status);
○10. Primary Load: 4 channels of DC output important load;

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○11. Secondary Load: 3 channels of DC output secondary load;
○12. Battery1和Battery2: Cathode interface of storage battery;
2.4 Outer Structure of Cabinet and Installation Instructions
Unit
Parameter
Allowable error
Remark
Height
221.5mm
±0.3mm
Width
482.6mm
±0.5mm
Depth
350.0mm
±0.3mm
Weight
25.0kg
±1.5Kg
System Installation Method:
SCM48100 is an embedded solar controller system. During installation, the plug-in frame of
solar controller is horizontally jacked up and inserted in a designated position. Make sure the
plug-in frame is properly installed. 4 mounting holes of suspension loop correspond to the
installation holes of cabinet. Four M6 cross recess round head combination screw (fitted with

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spring washer and flat washer) are screwed. The installation is finished after the screws are
tightened using relevant tool.
2.5 Wiring and Operation
2.5.1 Attentions
①. Please confirm that the backup battery is in a disconnected status before wiring. In other words,
the power supply is already disconnected.
②. Please carefully check the polarity identification of connector bar before wiring (this
equipment is common-cathode).
③. Upon connection of photovoltaic input, please confirm the anode and the cathode of
photovoltaic input. It is strictly forbidden to connect the anode and the cathode reversely.
④. Cathodes of backup battery and photovoltaic modules are forbidden to be grounded.
⑤. Before wiring, please confirm that the voltage of backup battery is in line with the voltage of
backup battery of this machine (this machine is a 48VDC system).
⑥. Before wiring, please confirm that the voltage of photovoltaic input is in line with the voltage
of photovoltaic input of this machine.
⑦. The ground terminal must be reliably grounded.
⑧. Please connect in order. Connect backup battery and electrical equipment first and PV input
later.
⑨. Please elect the wire diameter of PV input according to the following table. Make sure the
contact of wiring terminal is favorable during wiring to prevent overheating due to relatively big
current.

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2.5.2 Description of Terminal Blocks
1. Connect anode of solar panel at PV+ and cathode of solar panel at PV- (the polarity of solar cell
shall not be reversely connected).
2. The ground wire is a yellow-green wire, requiring reliable grounding. The wire diameter shall
be at least 6mm2. The shorter the ground wire is the better effect will be.
2.5.3 Operation
Confirm all the wires are correctly connected and the polarity is correct.
No.
Item
Technical
requirement
Uni
t
Remark
1
PV1 input
63
A
1 pair of output terminals: It is recommended to use wire
rod with specification of 6AWG or 12mm2and above.
2
PV2 input
63
A
1 pair of output terminals: It is recommended to use wire
rod with specification of 6AWG or 12mm2and above.
3
Output
Load1
25
A
1 pair of output terminals: It is recommended to use wire
rod with specification of 10AWG or 5mm2and above.
4
Output
Load2
25
A
1 pair of output terminals: It is recommended to use wire
rod with specification of 10AWG or 5mm2and above.
5
Output
Load3
20
A
1 pair of output terminals: It is recommended to use wire
rod with specification of 12AWG or 4mm2and above.
6
Output
Load4
20
A
1 pair of output terminals: It is recommended to use wire
rod with specification of 12AWG or 4mm2and above.
7
Output
Load5
10
A
1 pair of output terminals: It is recommended to use wire
rod with specification of 14AWG or 2mm2and above.
8
Output
Load6
10
A
1 pair of output terminals: It is recommended to use wire
rod with specification of 14AWG or 2mm2and above.
9
Output
Load6
10
A
1 pair of output terminals: It is recommended to use wire
rod with specification of 14AWG or 2mm2and above.
10
Battery
BAT1
100
A
1 pair of output terminals: It is recommended to use wire
rod with specification of 4AWG or 20mm2and above.
11
Battery
BAT2
100
A
1 pair of output terminals: It is recommended to use wire
rod with specification of 4AWG or 20mm2and above.
12
Backup
power
supply DC-
100
A
1 pair of output terminals: It is recommended to use wire
rod with specification of 4AWG or 20mm2and above.
13
Note: On RNT+ anode output copper bar three M6*12 screws, three M5*12 screws and three
M4*12 screws used to fasten copper lug terminals are distributed. Please select screws with
relevant sizes according to the current during wiring (big current corresponds to big-size screw).
Cathode output control method is adopted in the system. The output anode shares RNT+ Copper
bar.

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Switch on solar cell input circuit breaker and RUN light will be on.
Make sure LCD and parameter setting are correct.
Each parameter is already set upon delivery of this product. The factory set values are defaulted
after startup if there is no special demand. Customers may set relevant parameters by themselves if
they have any demand.
To shut down the product, please disconnect photovoltaic input first in order and then disconnect
backup battery and electrical equipment to complete shutdown action.
2.6 Description of Signal Interfaces
2.6.1 Monitoring RJ45 Signal Interface
Communication interface with external part: One RS485/RS232 serial port communicates
wiht upper computer of user. Pwoer bus protocoal is adopted (default: Baud rate: 9600bps).
Definitions of Serial Port RJ45 Pins
2.6.2 Definitions of Sockets on Signal Adapter Plate
Connector
Corresponding
pin
Nature of signal
Grade
T/H
(Temperature/humidi
ty sensor interfaces)
1
5V power supply anode
5V
2
Temperature/humidity sensor
(voltage) signal)
VTEM
3
5V power supply reference ground
AGND
T_E
(Battery temperature
1 sensor)
1
5V power supply anode
5V
2
NTC temperature sensor (voltage)
signal
SM4A
T_BAT
(Battery temperature
2 sensor)
1
12V power supply anode
12V+
2
Temperature sensor 2 (current)
signal
SM3A
IN-1~IN-4
(Input dry contact)
1. 2
IN1 water immersion, IN2 access
control, IN3 equipment cabin fan
alarm and IN4 backup power supply
IN1~IN4
OUT-1~OUT-6
1. 2
All output dry contacts: Closed upon alarm;

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(Output dry contact)
corresponding outputs can be set as upon alarm:
6 channels are defined as follows:
OUT1: Output overvoltage/under-voltage alarm (DC
output fault);
OUT2: Secondary load power-off alarm; primary load
power-off alarm and battery power-off alarm;
OUT3: Load circuit breaker alarm; battery fuse alarm;
battery temperature too low or too high alarm; ambient
temperature and humidity too low or too high alarm; SPD
alarm; battery under-capacity alarm;
OUT4: MPPT module communication failure alarm and
MPPT module failure alarm;
OUT5: Control backup power supply start or stop (when
dry contact is connected, the backup power supply starts;
when dry contact is disconnected, the backup power
supply stops);
OUT6: Start the fan (the fan is started when the
temperature of equipment compartment reaches 40℃; the
fan is closed when the temperature of equipment
compartment recovers to 30℃);
Remarks: 1. Ambient temperature sensor is a NTC temperature sensor with accuracy of 10K 1%
(if it is required to acquire ambient humidity, 5V digital temperature sensor can be selected); 2.
Battery temperature 1 sensor and battery temperature 2 sensor are different types of sensor
interface inputs. Battery temperature sensor 1 is a NTC temperature sensor with accuracy of 1-10K
1% while battery temperature 2 sensor is a 2-12V power supply current temperature sensor. If the
distance from the battery to the controller is less than 5m, battery temperature 1 interface can be
selected to acquire battery temperature. Otherwise, please use battery temperature 2 interface to
acquire battery temperature. Meanwhile, if 2 groups of battery are connected, please ensure the
consistency of capacity of these 2 groups. as for battery temperature, it is only required to acquire
temperature of a group of battery.

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2.7 Description of Human-machine Interface Displayed in LCD
Display Panel
LCD 显示界面
LCD display interface
RS485 与RS232 通讯网口
RS485 and RS232 communication ports
以太网通讯网口
Ethernet communication port
上翻键
UP button
确认键
OK button
下翻键
Down button
正常指示灯
RUN indicator lamp
告警指示灯
ALARM indicator lamp
输入. 输出干接点与外部传感器接入端子（备
用）
Input/output dry contacts and access terminals
of external sensor (standby)
2.7.1 LED Indicator Lamps on Monitoring Panel
Sign
Indicated
content
Color
Description
ALM
Fault
indicator
lamp
Red
The following alarms lighten alarm lamps: Primary load
power-off alarm; secondary load power-off alarm; lightening
protection alarm; battery fuse alarm; load fuse alarm; module
alarm; module protection. If the alarm level set is critical or
emergent, the red indicator lamp will be on; during general alarm,
the yellow lamp is on; no lamp is on if there is no alarm.
RUN
Monitoring
run lamp
Green
When the monitoring module of the system works normally, the
run lamp is on for 1s and then off for 1s, i.e. blinking; when the
monitoring module hardware of system is free from fault and it
does not normally communicate with the upper computer, the run
lamp is on for 0.125s and then off for 0.125s, i.e. blinking (4Hz).
If it fails to communicate with the upper computer for 1

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consecutive minute, it will be viewed as communication failure.
2.7.2 Operation Instructions of Functions of Button on Front Panel
a) UP——UP button: The menu turns up and the value is increased during setting of
parameter;
Press 3S UP button for a long time to quickly adjust status.
b) OK——OK button: Enter the menu and return to previous menu;
Single click—> Confirm (save data);
c) Down——Down button: The menu turns down and the value is decreased during setting of
parameter;
Press 3S DOWN button for a long time to enter quick adjustment status.
2.8 Configuration of Monitoring Parameters
The monitoring module is already configured according to the default parameters specified in
“Table of Setting of Battery Management Parameters”. If you need to change the configuration,
you may conduct parameter setting through RS485/RS232 communication or using buttons on the
display panel of LCD. Refer to the following table for details:
Table of Setting of Battery Management Parameters
Display of monitoring
panel
Description of
display
Setting range
Default
value
Equalized charging
voltage
/
42.0~58.0Vdc, and greater than and equal to float
charging voltage but less than (overvoltage alarm
point-1) Vdc
57.6Vdc
Float charging voltage
/
42.0~56.0Vdc, and greater than (DC
under-voltage alarm point+2) Vdc but less than
and equal to equalized charging voltage
54Vdc
Equalized charging
cycle
/
30 days~240 days
60 days
Charging coefficient
Charging
current-limiting
coefficient of
storage battery
0.05 ~0.25C10
0.10 C10
Number of battery
packs
Number of battery
packs
1 ~2
1
Battery capacity 1
Capacity of battery
pack 1
30~2000Ah
200Ah
Battery capacity 2
Capacity of battery
pack 2
30~2000Ah
200Ah
Temperature
compensation
Battery charging
temperature
0~500mV
120mV

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16
compensation
coefficient
Overvoltage power-off
/
Allow/forbid
Allow
Upper limit of input
voltage
/
200~260Vdc
256Vdc
Lower limit of input
voltage
/
80~120Vdc
90Vdc
Upper limit of output
voltage
/
45.2~60Vdc, and greater than overvoltage
recovery voltage but greater than (equalized
charging voltage+2Vdc)
59Vdc
Lower limit of output
voltage
/
35.0~59Vdc, and greater than secondary load
power-off
47Vdc
Under-voltage
power-off
/
Allow/forbid
Allow
Battery power-off
protection
/
40~50Vdc, and less than primary load power-off
voltage
43Vdc
Battery power-on
recovery
/
40~50Vdc, and less than primary load power-off
voltage
44Vdc
Primary load power-off
/
43~54Vdc, and less than secondary load
power-off voltage
45Vdc
Primary load power-on
recovery
/
43~54Vdc, and greater than under-voltage alarm
but less than secondary load recovery voltage
49Vdc
Secondary load
power-off
/
43~54Vdc, and less than under-voltage alarm
voltage
46Vdc
Secondary load
power-on recovery
/
43~54Vdc, and greater than primary load recovery
voltage but less than equalized charging voltage
50Vdc
Battery
over-temperature
power-off
/
Allow/forbid
Allow
Battery
over-temperature
protection
/
-20~80℃
53℃
Battery
over-temperature
recovery
/
-20~80℃
48℃
Upper limit of ambient
temperature
/
40~80℃
60℃
Lower limit of ambient
temperature
/
0~20℃
0℃

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Chapter 3 Instructions to Maintenance
3.1 Preventive Periodical Maintenance
In order to improve the working reliability of solar controller, please complete the following
preventive maintenance operations:
1. Keep the environment sanitary and avoid dust or dropping water on the controller.
2. Check if the contact of input/output terminal blocks is favorable once every several months.
3. Check the working environment of the equipment and use the controller in a clean place with
good ventilation.
4. When multiple power supplies are simultaneously used, the front space of the power frame shall
be expanded as much as possible. Equipment like air conditioner or fan shall be better installed in
places where the condition allows.
5. Daily operation shall be properly recorded.
6. Check the historical records of controller on a regular basis.
3.2 Steps of Fault Maintenance
1. Check historical records of faults in LCD.
2. Check if relevant parameters are wrongfully or unreasonably set.
3. Check if the photovoltaic input voltage is within the stipulated range.
4. Check if any error exists between actual battery voltage and displayed voltage.
5. Check the charging circuit to see if it is normal.
6. Reset the system to see if it can recover to normality.
3.3 Steps of Maintenance Operation
1. Disconnect photovoltaic input circuit breaker first and then disconnect battery input circuit
breaker.
2. Use tools like screwdriver to disassemble connecting wires like ground wires connected to
photovoltaic input, backup battery and rack. Mark anode and cathode and use insulated rubber tape
(or heat-shrinkable tubing, fiber casing pipe) to properly wrap the connecting wire to pre vent the
occurrence of short circuit with other leads.
3. Disassemble the set screws on the crate of controller and then repair or replace the machine.
4. After the machine is repaired, or a new controller is replaced, the screws shall be used to lock
the crate of controller again and connect wires like ground wires connected to photovoltaic input,
backup battery and rack. Then, power-on operation can be conducted again according to wiring

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and operation steps indicated in 2.5 above.
3.4 Maintenance of Solar Photovoltaic Panel
Solar photovoltaic panel is an important part of the whole photovoltaic power generation system. It
is related to the photovoltaic utilization efficiency of the whole system. Therefore, the installation
firmness of photovoltaic panel and the surface cleanness of photovoltaic panel must be ensured.
1. Make sure the photovoltaic panel is disconnected first. Then, output and backup battery can be
disconnected. The order shall not be turned reverse.
2. Check if the photovoltaic plane is firm constantly.
3. Check the electric leakage at the connection of conductor to prevent electric leakage in rainy
and snowy days.
4. Clean and maintain the surface of panel on a regular basis.
3.5 Other Maintenance
Handling measures after occurrence of faults:
1. As for some general faults of the equipment, user may read the instruction manual carefully and
judge and eliminate such faults according to the manual under the precondition that the user fully
grasps the method.
2. If faults not eliminable occur, professional technical personnel shall be requested to repair. Or
the user may directly contact us.
3.6 Diagnosis of Common Abnormal Problems
After you start the controller, you may find the possible causes by referring to Table 3-1 if the
controller cannot work or abnormality occurs after the controller works for a certain period of time.
Meanwhile, check if the faults are caused by external environment, for example, if temperature
and humidity do not meet the requirements. If the controller still cannot work normally after
methods indicated in Table 3-1 are followed, please hand over it to the professionals for repair.
This chapter only contains some simple fault diagnosis procedures. If the diagnosis answers are
not very clear, or the information obtained is not enough to solve the problem, please contact with
local agency or distributor.