AMPTRON AM2420N MPPT Charge Controller User Manual
- June 6, 2024
- AMPTRON
Table of Contents
- AMPTRON AM2420N MPPT Charge Controller
- Warnings and Tools Icon Chart
- Safety Tips
- Product Features
- Mounting Instructions
- Wire Connection Sequences
- LED Light Signal Interpretation Chart
- LCD Display Interface Overview
- Key Functionality Chart
- LCD Display & Cycles
- Error Code Chart
- Controller Specification
- Product Dimensions
- References
- Read User Manual Online (PDF format)
- Download This Manual (PDF format)
AMPTRON AM2420N MPPT Charge Controller
Warnings and Tools Icon Chart
Safety Tips
-
Review this manual thoroughly before attempting installation.
-
Beware of any nearby electrical equipment that may interfere with installing this device.
-
Solar panels can generate high voltages and currents, make sure your solar panels are completely covered from sunlight during installation. It is recommended that installation be performed by a qualified electrician.
-
Connecting wires to this device can generate sparks, please wear proper insulation gear while installing this device.
-
To avoid damage to the battery or controller, use proper fuses in wiring.
Please contact a professional if you need help with fuse sizing. -
Always keep children away from this device.
-
Use the correct gauge wires, refer to the below table for recommended wire sizes for various current loads.
Solar Input Current| 5A| 10A| 20A| 30A| 40A|
60A
---|---|---|---|---|---|---
Wire Cross Section Area (mm²)| 1.5| 2.5| 5| 8| 10| 12
Wire AWG| 15| 13| 10| 8| 7| 6
Product Features
This MPPT solar charge controller is a device for solar charge regulation and
direct current output load control.
These MPPT charge controllers have features as follows:
- By continuously checking solar panel power output changes, the controllers employ multiple MPPT charge algorithms in combination to boost charging efficiency in different weather and temperature conditions.
- Built-in buffer allows the rated power input to be exceeded by a maximum of 25%.
- Charging modes available for most common deep-cycle battery types, including AGM, Sealed, Flooded and GEL lead acid, and Lithium.
- Auto recognition of 12V/24V battery system voltage by AM2420N/AM2430N/AM2440N model; auto recognition of 12V/24V/36V/48V battery system voltage by AM4860N model. Lithium battery excluded from this feature.
- Supports recording of system running data including power generated and power utilized for up to 300 days, compatible with monitoring App through IOS and Android.
- Allows mobile phone APP operation for monitoring and parameters settings via built-in Bluetooth communication module. An APP PVChargePro is provided for mobile phone monitoring and operation. You can search for “PVChargePro” and download the APP at the IOS APP Store and Google Play Store.
- Provides multiple load control mode options for light based, time based and manually adjusted scenarios. Low no-load loss.
- Industrial grade design with reverse polarity protection for solar panels, battery, and load.
Device Diagram
AM2420N&AM2430N&AM2440N & AM4860N
| # | Description | # | Description |
|---|---|---|---|
| 1 | LCD Display Screen | 6 | DC Load Terminals |
| 2 | Function Keys ([SETTING], [UP], [DOWN], [ESC]) | 7 | RS485 Communication Port |
| 3 | External Temperature Sensor Terminal | 8 | LED Indicator (PV, BAT, LOAD, |
FAULT)
4| Solar Terminals| 9| Installation Mounting Holes
5| Battery Terminals|
Mounting Instructions
-
Step 1:
Find a cool, dry and weather safe location for installation. -
Step 2:
Mark the controller’s mounting holes on the mounting surface. -
Step 3:
Drill holes in the marked mounting hole locations.
-
Step 4:
Insert pilot screws in the mounting holes. -
Step 5:
Mount the controller into the pilot screws and fasten the screws. -
Step 6:
Continue to wire the battery, solar DC load and other accessories to the controller.
Wire Connection Sequences
During installation of your MPPT controller, please follow the order of connections below:
- Connect the positive battery wire followed by the negative battery wire.
- Make sure your solar panels are fully covered to prevent electrical shock.
- Connect the positive solar array output wire followed by the negative solar array output wire.
- Connect DC load wires to the DC load output (if applicable).
- Connect the external temperature sensor to its terminal shown above.
- Download APP PVChargePro and turn on the Bluetooth function in your mobile phone to connect the APP with the controller.
LED Light Signal Interpretation Chart
| LED Name | LED Display | Signal Indication |
|---|
PV
| ****
Off
| Solar Input Not Charging
*PV LED is generally off during night time
Double Flash| Solar Input Charge Detected
Single Flash| Solar Input Reverse Polarity
Steady On| MPPT Charge Mode
Fast Flash| Equalize or Boost Charge Mode
Slow Flash| Float Mode
BATTERY
| Single Flash| Battery Input Reverse Polarity
Fast Flash| Battery Over Voltage
Slow Flash| Battery Over Discharged
Steady On| Battery On
LOAD
| Off| No DC Load Connected/ Load Off
Fast Flash| DC Load Short Circuit
Steady On| DC Load On
FAULT
| Off| No Errors
Steady On| System Error – Check Error Code
Check the fault light to spot if a system error may be present.
LED Flash Rhythm Chart
| Flash Status | Indication | Description |
|---|
Steady On
| | ****
LED light on
Off
| ****
| ****
LED light off
Fast Flash
| | LED light blinks at frequency of 2Hz (twice every second
Slow Flash
| | LED light blinks at frequency of 0.5Hz (once every two seconds)
Single Flash
| | LED light blinks for 0.1 second after every 2 seconds
Double Flash
| | LED light blinks for 0.1 second twice after every 4 seconds
LCD Display Interface Overview
LCD Display Interface
| Display Section | Display Layout |
|---|
Charge Status
| 
Charge Mode & Parameter
| 
Active Functions
| 
Status Information
| Status Icon | Indication | Status | Description |
|---|---|---|---|
| **** | **** |
Solar Charge Indication
| Flowing| Solar Power Charging Battery
Off| Solar Power Not Charging Battery
| DC Load Indication| Flowing| DC Load Drawing Power
Off| DC Load Off
| ****
Charge Mode
| ****
Steady On
| MPPT Charge Mode
| Boost Charge Mode
| Float Charge Mode
Off| Not Charging
| Voltage Setting| On| Setting Charge Voltage
Off| Charge Voltage Has Been Set
| Over Discharge Volt Settings| On| Setting Discharge Voltage
Off| Discharge Voltage Has Been Set
|
Solar Icon
| Steady On| Daylight Detected
Off| No Daylight Detected
Fast Flash| Solar System Over Voltage
|
Battery Icon
| Steady On| Battery Connected and Functional
Off| No Battery Connection
Fast Flash| Battery Over-Discharged
|
Load Status
| Flash| DC Load Short Circuit or Over-Load
On| Load On
Off| Load Off
Key Functionality Chart
Function Key| System Mode| Input| Input
Function
---|---|---|---
|
View Mode
| ****
Short Press
| ****
Enter SET mode
|
View Mode
| ****
Short Press
| ****
View Previous Page
|
View Mode
| ****
Short Press
| ****
View Next Page
|
View Mode
| ****
Short Press
| DC Load On/Off (Manual Control Program Only)
Function Key| System Mode| Input| Input
Function
---|---|---|---
|
Mode
| Long Press| Save Data & Exit SET Mode
Short Press| Next Setting
|
Set Mode
| ****
Short Press
| ****
Increase Parameter Value
|
Set Mode
| ****
Short Press
| ****
Decrease Parameter Value
|
Set Mode
| ****
Short Press
| ****
Exit SET Mode Without Saving
LCD Display & Cycles
Pre start-up display while the MPPT controller turns on, this usually lasts
several seconds while the controller detects the operating environment
.
LED Screen Display Cycle
The battery voltage view will be displayed by default. Use the up and down arrow keys to cycle through different views. The battery voltage view will resume upon 30 seconds of inactivity. The error code view will be displayed when an error is detected. The backlight in the screen will be on for 20 seconds with any button operation.
Setting Battery Mode
Enter SET mode by pressing the Setting key in any view page other than Load
Mode. Use the up and down arrow keys to select battery mode, then long press
the Setting key to save.
| Abbreviations | Battery Types | Description |
|---|
FLD
| Flooded Battery|
Auto-recognition with default parameters set for each type of batteries.
Sealed/AGM Battery
Gel Battery
LI| Lithium Battery| Some parameters can be customized.
Use| Advanced User Mode| Most parameters can be customized.
Advanced Battery Settings
In Lithium or User mode, short press the Setting key again to cycle through
each parameter view.
Use the up and down arrow key to adjust parameter values, then long press
Setting key to save.
For Battery Type: Li
For Battery Type: USER
Load Mode Settings
Enter Load SET Mode by pressing the Setting key in Load Mode view only.
Use the arrow key to cycle through load modes before long pressing SET to save
and exit. Short pressing SET will exit without saving.
| Mode | Definition | Description |
|---|---|---|
| 0 | Daylight Auto-Control | DC load turns on when no daylight is detected |
1~14
|
Daylight On/Timer Off
| DC load turns on when no daylight is detected
15
|
Manual Mode
| DC load turns on/off by pressing the Return key
16
|
Testing Mode
| DC load turns on and off in a quick succession
17
|
Always On
|
DC load stays on
Error Code Chart
| Code | Error | Description & Quick Troubleshoot |
|---|---|---|
| E00 | No Error | No action needed |
E01
| Battery Over-dis- charged| Battery voltage is too low.
DC load will be turned off until battery re-charges to recovery voltage
E02
| ****
Battery
| Battery voltage has exceeded controller limit. Check battery bank voltage
for compatibility with controller
E04| Over-voltage| DC load short circuit
E05
| Load Short Circuit| DC load power draw exceeds controller capability. Reduce load size or upgrade to a higher load capacity controller
E06
| ****
Load Overload
| Controller exceeds operating temperature limit.
Ensure the controller is placed in a well-ventilated cool, dry place.
E08
| ****
Overheating
| Solar array amperage exceeds controller rated input amperage. Decrease the amperage of solar panels connected to the controller or upgrade to a higher rated controller
E10
| Solar Over- amperage| Solar array voltage exceeds controller rated input voltage. Decrease the voltage of solar panels connected to the controller
E13
| Solar Over-voltage| Solar array input wires connected with reverse polarity. Disconnect and re-connect with correct wire polarity
E14
| ****
Solar
| Battery connection wires connected with reverse polarity. Disconnect and re- connect with correct wire polarity
*Please contact Amptron for technical support on additional troubleshooting.
Controller Specification
The variable “n” is adopted as a multiplying factor when calculating parameter
volt-ages, with the rule for “n” being: if battery system voltage is 12V, n=1;
24V, n=2; 36V, n=3; 48V, n=4.
For example, the equalize charge voltage for a 12V FLD (Flooded) battery bank
is 14.8V1=14.8V. The equalizing charge voltage for a 24V FLD (Flooded)
battery bank is 14.8V2=29.6V.
Parameter Value
Model No.| AM2420N| AM2430N| AM2440N| AM4860N
System Wiring Grounded| Negative Grounded
Battery System Voltage
|
12V/24V
Auto (FLD/GEL/SLD)
Manual (Li/User)
| 12V/24V/36V/48V Auto (FLD/GEL/SLD)
Manual (Li/User) Auto (FLD/GEL/SLD)
Manual (Li/User)
No-load Loss
|
12ma (12V), 10ma (24V)
| 12ma (12V), 10ma (24V),
8ma (36V), 6ma (48V)
Max Solar Input Voltage| <100Voc| <150Voc
Rated Solar Charge Current| 20A| 30A| 40A| 60A
Max Solar Input Power
|
300W/12V
600W/24V
|
450W/12V
900W/24V
|
600W/12V
1200W/24V
|
900W/12V 1800W/24V
2600W/36V 3200W/48V
Light Control Voltage| 5Vn
Light Control Delay Time| 10s
Max Load Output Current| 20A
Operating Temperature| -35ºC ~ +45ºC
IP Protection| IP32
Net Weight| 1.0 kg| 2.0 kg| 2.0 kg| 3.0 kg
Communication Port| RS485
Operating Altitude| ≤ 3000 meters
Controller Dimension| 180140*71
mm
| 24518082.5
mm
| 28021090
mm
|
Parameter Battery Parameters
Battery Types| FLD| SEL| GEL(default)| USER
(adjustable)
| LI (adjustable)
Equalize Charge Voltage| 14.8Vn| 14.6Vn| —| Default| —
Boost Charge Voltage| 14.6Vn| 14.4Vn| 14.2Vn| Default: GEL| Default:
14.2Vn
Float Charge Voltage| 13.8Vn| Default: GEL| —
Boost Charge Recovery Voltage| 13.2Vn| Default: GEL| —
Over-discharge Recovery Voltage| 12.6Vn| Default: GEL| —
Over-discharge Voltage| 11.1Vn| Default: GEL| Default: 11.1V*n
AutoTemperature Compensation| -3mV/2V/oC| Default: GEL| —
Product Dimensions
AM2420N Model
- Product Dimensions: 18014071.1mm
- Installation Area Dimensions: 164*90mm
- Installation Hole Size: φ5mm&φ10mm
- Connection Socket Size: 7.5*7.5mm
AM2430N & M2440N Model
- Product Dimensions: 24518082.5mm
- Installation Area Dimensions: 226*138mm
- Installation Hole Size: φ5mm&φ10mm
- Connection Socket Size: 7.5*7.5mm
AM4860N Model
- Product Dimensions: 28021090mm
- Installation Area Dimensions: 256*154.5mm
- Installation Hole Size: φ5mm&φ10mm
- Connection Socket Size: 7.5*7.5mm
p: 1300 543 376 | e: info@amptron.com.au | w: amptron.com.au