HQST PWM CONTROLLER solar charge controller
（
PWM 30A/PWM 40A
）
User Manual
Dear users
Thank you for choosing our product. Before using the product, please read this manual carefully.
Version : V1.01
The above information is subject to change without prior notice.
Product Features
1. Automatic system voltage identification
2. Charging program options for sealed, GEL and flooded lead-acid batteries and lithium batteries are available.
3. An upgraded 3-stage PWM charging algorithm is adopted. Application of an equalizing charge to the battery periodically or when over discharged can effectively prevent the battery from nonequalization and sulfuration, thus extending the battery's service life (with the exception of GEL and lithium batteries).
4. With temperature compensation employed, charging parameters can be automatically adjusted
(with the exception of lithium batteries).
5. A wide range of load working modes facilitate the product's application to different types of street lights and monitoring devices.
6. The product provides overcharge, over-discharge, overload protection, as well as short-circuit and reverse-connection protection.
7. By virtue of an advanced load starting method, large-capacitance loads can be started smoothly.
8. A range of parameter settings and power-down saving functions are available, thus requiring no repeated setting.
9. The product provides a dot matrix graphic LCD screen and a human-machine interface with 2 keys.
10. The user-friendly design of browser and dynamic interfaces ensures convenient and intuitive operations.
11. (An optional communication function) provides a RJ12 data port (output of TTL232 level or bluetooth signals), with the data adopting the standard Modbus protocol, and can be used together with our upper computer monitoring software or mobile phone APP.
12. Boasting an industrial grade design, the product can function well in various tough conditions.
13. It features a backlit display, and the backlight will be turned on with a key pressed and turned off over a period of time.
14. TVS lighting protection is adopted.
Panel Structure
Communication port LCD screen with backlight
Keys
USB port
+ + -
Solar panel Battery
+
Load
-
State Indicators
LCD Icon
Indicated
Object
State
Day recognition
Steady on
Steady on
Solar panel
Steady on
Steady on
Charging state
Steady on
Steady on
Battery
4 dashes
3 dashes
Battery SOC
Load
2 dashes
1 dash
0 dash
Steady on
Steady on
Quick flashing
Meaning
Day time
Night time
Solar panel indication
Boost charging
Floating charging
Equalizing charging
Battery overvoltage
Battery over discharge
100%
75%
50%
25%
0%
Load turned on
Load turned off
Overload or short-circuit protection
Five Load Working Modes
1.Pure light control (0): When sunlight disappears and the light intensity drops to the starting point (light control off), the controller initiates a 10-minute delay
(settable) to confirm the starting signal, and then switches on the load for operation.
When sunlight emerges and the light intensity reaches the starting point, the controller initiates a 1-minute (fixed) delay to confirm the shutting-down signal, and then shuts down the output to stop the load's operation.
2. Light control + time control (1 to 14): The starting process is the same as pure light control. After operating for a preset period of time (settable from 1 to 14 hours), the load stops operation automatically.
3. Manual mode (15): In this mode, the user can switch the load on or off by the keys,no matter whether it's day or night.
4. Debugging mode (16): When the solar panel voltage is higher than the "light control off" voltage, switch off the load immediately; when the solar panel voltage is lower than the "light control on" voltage, switch on the load immediately.
5. Normal on (17): The energized load keeps in output state.
LED
Display
0
1
2
3
4
5
6
7
8
Mode
Pure light control mode
Light control + time control (1 hour)
Light control + time control (2 hour)
Light control + time control (3 hours)
Light control + time control (4 hours)
Light control + time control (5 hours)
Light control + time control (6 hours)
LED
Display Mode
Light control + time control (9 hours)
Light control + time control (10 hours)
Light control + time control (11 hours)
Light control + time control (12 hours)
Light control + time control (13 hours)
Light control + time control (14 hours)
Manual mode
Debugging mode(default)
Normal on mode
Load Working Mode Settings
In the load mode menu, long press for 2s, and the number (e.g. 15) will begin to flash.
Press to adjust the mode (from 0 to 17), and then long press again for 2s to complete and save the setting.
Note: 1. After parameter adjustment, if is not pressed and held long enough for
exiting, the system exits to the main menu after 12s, and the parameter that
was set is not saved.
2. When the system is saving data, the screen may shake slightly. This is normal
and the user may ignore it.
Safety Advice
1) When connected to a 24 V system, the solar panel terminal voltage may exceed the limit for human safety. If operation is to be performed, be sure to use insulation tools and keep your hands dry.
2) If the battery is reversely connected, the controller itself won't be damaged, but the load end will have a negative voltage output, which may damage your load device.
Take care not to let this happen.
3) The battery contains a large amount of energy. Therefore, in no cases should the battery be short circuited. It's recommended that a fuse be serially connected to the battery.
4) Keep the battery away from fire sparks, as the battery may produce flammable gas.
5) Keep children away from the battery and controller.
6) Follow the safety advice provided by the battery manufacturer.
LCD Screen Illustration
Night time indicator
Day time indicator
Solar panel indicator
Battery indicator
Charging current indicator current indicator
Load indicator
Numerical value display area
Charging state
Units
System voltage
36V48V Battery type settings communication method
Fault indication
Browsing Menu on LCD Screen
1).Continuously press ,the screen will display the following in order: "main menu"---"solar panel voltage"---" solar panel current"---"battery capacity"---"battery voltage"---"discharging current"---"charging amp-hrs"---" discharging amp-hrs"---" temperature inside controller"---" load mode"---" load mode settings"---"error code", and then back to "main menu". If the keys are not operated for 12s, the system will automatically return to display the "main menu".
Setting Menu on LCD Screen
2). When "load mode" is displayed, long press to enter into the load mode setting. Press
to adjust the mode, and long press for 2s to save and exit; or else, the system will not save the setting that was just made and automatically exit the setting interface after 12s.
Battery Types, Charging Voltages (Lithium Battery)
Over-Discharge Return and Over-Discharge Voltage Settings
In the non-load mode menu:
1) When is long pressed, the first interface entered is for battery type setting, and the flashing one is the battery type currently selected. Press to select among
FLD/GEL/SLD/LI.
2) After selection, short press to enter into over-discharge return and overdischarge voltage settings; or the first to enter charging voltage setting menu for lithium battery.
3) After parameters have been set, long press for 2 s to save and exit.
Parameters shall be set according to the following rule: over-discharge voltage ＜ over-discharge return v voltage ＜ oltage ≤under -voltage warning boost charging return ≤equalizing charging v
＜ floating charging oltage ＜ overcharge voltage; and two adjacent values shall have a difference greater than 0.5 V.
Charging and Discharging Overload Protection and Recovery Time
In the charging and discharging overload protection mechanism, the relation between overload current and protection time is as follows: An overload current 1.25 times of the rated current initiates a delay of 30s before starting protection; similarly, 1.5 times,
5s and 2 times, 1s.
Overload recovery: automatic recovery after 1 minute.
Load Short Circuit and Recovery
Short-circuit automatic recovery time: 1st time, 5 s; 2nd time, 10 s; 3rd time, 15 s; 4th time, 20 s; 5th time, 4 hours or automatic recovery the next day; or long press to make the load resume output.
Communication Port Line Se
q
uence
(Only for Controllers with Communication Functions)
Controller communication port RJ12 (6-pin)
RS232
Installation Instructions and Precautions
1. The controller shall be installed securely, and its dimensions
are as follows:
PWM-30A/40A External dimensions: 166.0×118.2×52.6(mm)
Installation dimensions: 156×57.5 (mm)
2. Installation hole diameter: 3.5 (mm)
PWM-30A/PWM-40A
3. Precautions:
① If it is 12V system, the bottom left corner of LCD display will show '12V'; 24V system will show' 24V'.
② The first step is to connect the b attery. If the connection is made correctly, the controller screen will be lit up; otherwise, check whether the connection is correct.
③ The second step is to connect the solar p anel. If sunlight is present and strong enough (the solar panel voltage is greater than battery voltage), the sun icon on the
LCD screen is on; otherwise, check whether the connection is correct (it's recommended that the operation be performed under the debugging mode).
④ The thir d step is to connect the load. Connect the load leads to the controller's load output terminal, and the current shall not exceed the controller's rated current.
⑤As the contr oller will generate heat during operation, it's recommended that the controller be installed in an environment with good ventilation conditions.
⑥ Choose cables with lar ge enough capacity for connection, in case too much loss incurred on the lines causes the controller to misjudge.
⑦The contr oller has a common negative pole inside. If grounding is needed, ground the negative pole.
⑧It' s important to fully charge the battery regularly. At least once full charging every month is recommended, and failure to do that may cause permanent damage to the battery. Only when in-flow energy outpaces out-flow energy can the battery be charged fully. Users shall bear this in mind when configuring the system.
⑨ Check whether the contr oller's each connection terminal is tightened securely; if not, it may suffer damage when large current passes.
Error Code List
Code on LCD screen
E0
E1
E2
E3
E4
E5
E6
E8
E10
Corresponding error
No error
Battery over discharge
Battery overvoltage
Undervoltage warning
Load short circuit
Load overload
T
emperature too high inside controller
Charging current too high
Solar panel input voltage is too high
Common Problems and Solutions
Symptoms
LCD screen does not light up
Incomplete display or no renewal on LCD screen
No charging with sunlight present
Causes and Solutions
Check whether the battery is correctly connected.
Check whether the ambient temperature is when the temperature rises.
Check whether the solar panel is correctly connected and contact is good and reliable.
Check whether the solar panel voltage falls below the battery voltage.
T he sun icon does not light up, while
the solar panel icon does. T he battery
voltage is normal, but there is no
output.
The lo ad will be switched on automatically after 10 minutes (set by the user).
The b and there is no output.
The lo attery icon flashes slowly, ad icon flashes quickly, and there is no output.
System overvoltage. Check whether the battery voltage is too high.
The b attery is over-discharged, and will recover when recharged adequately.
ad's power exceeds the rated value or
Check whether the power-consuming device is connected correctly and reliably.
Other symptoms
The char ging and discharging amp
-hrs displays: 9999.K Ah
The decimal point flashes indicating that the displayed value has reached its upper limit.
Long press to reset it.
Parameter Details
Model
Rated current
System voltage
Rated power
No-load loss
Max. Solar energy input voltage
Max. voltageat the battery end
Battery type
Overvoltage protection
Equalizing charging voltage
Boost charging voltage
Floating charging voltage
Charging recovery voltage
Over-discharge recovery voltage
Over-discharge voltage
PWM-30A/PWM-40A Remarks
30A/40A
Automatic recognition of 12V/24V
Manual setup
Flooded
FLD
12V/450W
24V/900W
< 22mA/12V ； < 16mA/24V
<55V
12V/600W
24V/1200W
14.8
14.6
13.8
<34V
Parameters
Sealed
SLD
GEL GEL
16.0V
14.6
14.4
-
14.2
13.8
13.2V
13.8
Lithium LI
-
14.4
-
Default: automatic identification
The higher the system voltage, the lower the no-load loss.
Default
SLD
×1/12V
×2/24V
；
；
12.5V
（ settable with the keys
11.0V
（ settable with the keys
）
）
30 days -
1H
2H
-3.0mV/ ℃ /2V
-
-
-
Equalizing charging time
Boost charging time
T emperature compensation
Light control voltage
Light control judgment time
USB function
Bluetooth function
232 Serial port communication function
Operating temperature
Over temperature protection
IP protection rating
Net weight
Protection functions
Dimensions
Light control on 5V, light control off 6 V (light control on plus 1 V)
10 minutes
Yes optional optional
-25 ℃ to+55 ℃ ；
When temperature is above 60 ℃， charging function is turned
When temperature is above 70 ℃，
℃； load starting function is turned off, and the function is recovered when temperature is below 60 ℃
IP30
700g
Battery plate reverse connection protection, a battery reverse connection protection, charging battery board short circuit protection, charging the battery open circuit protection, charging over current protection, overload protection, load short-circuit protection controller and over temperature protection.
166.0×118.2×52.6(MM)
×1/12V
×2/24V
；
；
Material Code
：
1.1.24.01511
