This document describes the EAPRO TRON AI-MPPT MPPT Off-Grid Hybrid Solar PCU, an energy-efficient power control unit designed for various applications.

Function Description:

The EAPRO TRON AI-MPPT is an MPPT Off-Grid Hybrid Solar PCU (Power Controlling Unit) that utilizes Pure Sine Wave technology and an inbuilt Real-Time Clock (RTC). Its primary function is to optimize solar power utilization for maximum power saving, providing a reliable power source for commercial, domestic, or industrial electronic appliances. The device intelligently tracks the sun's position and manages power absorption from a solar array. It can operate in dual modes: UPS and Normal. In UPS mode, it offers fast switching and an input voltage range of 180V to 270V. In Normal mode, it has a wide input operating range of 90V to 290V (or 100V to 290V for 3000VA and above models). The PCU prioritizes solar power, intelligently supplementing with grid power only when necessary. It also features an active battery reverse protection system and an inbuilt fully regulated MPPT charge controller.

Important Technical Specifications:

The TRON AI-MPPT PCU is available in various capacities, including 1050VA, 1500VA, 2200VA, 3000VA, 3.5KVA, 5350VA, 7.5KVA, and 10KVA, with nominal battery voltages ranging from 12V DC to 96V DC.

AC Mains Mode:
- I/P Voltage Range (Normal Mode): 90V to 290V ± 10V AC (100V to 290V ± 10V AC for 3000VA and above).
- I/P Voltage Range (UPS Mode): 180V to 270V ± 10V AC.
- Change Over Time (UPS Mode): ≤ 10mSec.
- Change Over Time (Normal Mode): ≤ 20mSec.
- Charging Current HC (Default): Varies by model, e.g., 18±1A for 1050VA, 26±1A for 1500VA, 20±1A for 2200VA, 24±1A for 3000VA, 20±1A for 3.5KVA, 24±1A for 5350VA, 16±1A for 7.5KVA, and 20±1A for 10KVA.
- Boost Charging Voltage Per Battery: Tubular Battery: 14.4±0.2VDC (Default); SMF Battery: 13.8±0.2VDC.
- Float Charging Voltage Per Battery: 13.7±0.2VDC (Default).
- Battery Quantity (12V 100Ah-200Ah): Varies by model, e.g., 1 for 1050VA/1500VA, 2 for 2200VA/3000VA, 3 for 3.5KVA (36V), 4 for 3.5KVA (48V)/5350VA (48V), 8 for 5350VA (96V)/7.5KVA/10KVA.
Battery Backup Mode:
- Output Wave Shape: Pure Sine Wave.
- Output Voltage @ No Load: 225V±7 V AC (230V±7 V AC for 3000VA and above).
- Output Frequency: 50Hz±1Hz.
- Battery Low Alarm (VDC) per Battery (Default): 10.8±0.2VDC.
- Battery Low Cut (VDC) per Battery (Default): 10.6±0.2VDC.
Solar Charge Controller:
- Solar Charge Controller Type: MPPT Type.
- Solar Battery Charging Current (Default): 40 Amp.
Protection Class: IP 20 (Indoor Use).
Alarms: Inverter ON (BACKUP Mode) - 0.5 second beep every 2 seconds (5 Times); UPS Mode ON and Mains Voltage out of range from UPS Mode - 0.5 second beep every 2 minutes.
Protections: Battery Low, Overload, Over Temperature, O/P Short Circuit, Mains MCB/Fuse Trip, PV Reverse.

Usage Features:

The EAPRO TRON AI-MPPT offers several user-friendly features:

Real-Time Clock (RTC) Integration: Divides daytime into four time zones (Sun Rises, Afternoon, Sun Sets, Night Time) for intelligent solar selection and maximum power saving.
Intelligent Hardware & Smart Solar Selection Algorithm: Tracks sun position based on time zone and PCU parameters like battery voltage, discharging AH, solar current capacity, total solar current, and solar coefficient.
Charging by Solar Power Only (SL-4): A mode for extreme grid power saving, activated by a front panel button.
Customizable Parameters: Users can set critical parameters such as time, battery boost voltage, battery low cut voltage, solar battery low cut voltage, solar max charging current, and mains high charging current.
Digital Display: Shows solar KWH used, battery voltage, mains voltage/output voltage, load percentage, solar charging current, solar current to load, and time.
Power Saver Mode: Enabled after 105 minutes of battery full charge.
Dual Charging Current Option: For Normal Charging and High Charging.
Intelligent Overload Sensing Circuit: With auto-retry facility.
Programmed Inbuilt Cooling Fan: Operates as needed.
Remote Monitoring & Controlling (Optional): Through WiFi/LAN/GPRS/Android APP.
Saving Levels (SL-1 to SL-4): Four predefined saving levels allow users to customize charging behavior and grid interaction based on their power cut frequency and preferences. SL-4 includes "No Mains Charging" (NMC) and "Mains Cut Off at Night" features for enhanced grid independence.
Mains Cut Off Time Setting (for night): Available in SL-4, allowing users to set a specific time for mains supply to cut off to discharge the battery.
Solar Cut Window: By pressing the ON/OFF switch for 10 seconds, a solar cut window appears on the display, allowing users to remove or reconnect PV input wires.

Maintenance Features:

Safety Precautions: The manual emphasizes reading all instructions and warnings to prevent damage and injury. It advises against disconnecting battery cables while the PCU is delivering power, using only deep cycle lead-acid batteries, and ensuring proper grounding.
Battery Maintenance: Servicing should be performed by knowledgeable personnel. When replacing batteries, use the same type and number. Precautions include not disposing of batteries in fire, not opening or damaging them, removing metal objects, using insulated tools, wearing rubber gloves and boots, and disconnecting charging sources before connecting/disconnecting battery terminals.
Troubleshooting Guide: Provides solutions for common problems such as no LCD indication, overload faults, short circuit faults, thermal trips, fuse/MCB trips, PV reverse faults, low surge power, empty battery blinking, and LCD communication errors.
Installation Check List: An essential checklist for higher rating models, covering environment conditions (noise, dust, ventilation), mains input (earthing pits, voltages, frequency), solar input (panel count, current, circuit breaker rating), output (voltage, frequency, load), battery (wire thickness, capacity, make, date), and earthing.

EAPRO TRON 1050VA - Front Panel Overview; Front Panel Controls and LEDs; LCD Display Indicators

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