FOTO CHARGER DC 48
Our company stopped production of this product and its accessories in 2018, and its support was terminated on December 31, 2023.
After June 30, 2025, we will no longer provide any service for this product and its accessories.
Similarly, support and advice for existing applications will no longer be available. Thank you for your understanding.
The aim of VONSCH was to complete its photovoltaic portfolio and to produce highly reliable battery charger with high efficiency and long durability.
Solar MPPT charger FOTO CHARGER DC 48 uses DC voltage generated at the terminals of solar panel to optimal and efficient charging of batteries with a nominal voltage of 48 V.
The charger is powered directly from DC voltage of photovoltaic panels connected in series into a single string. Integration of several FOTO CHARGER DC 48 chargers to allow faster charging of the battery is possible, when higher power of properly connected panels is present.
In case of insufficient illumination of solar panels and discharged battery, it is possible to charge the battery from the grid by adding the rectifier module UM-01AC to FOTO CHARGER DC 48.
Reliable and efficient charging is ensured by 3-stage charging characteristics.
The advantage of FOTO CHARGER DC 48 is low acoustic noise, high efficiency and the possibility of integrating new promising features.
The main advantages of using FOTO CHARGER DC 48:
- high efficiency of 95 % is achieved by using the modern SiC FET switching elements and by minimization the self-consumption
- automatic 3-stage charging with the equalization possibility
- fast and effective MPP tracking
- inbuilt switch for disconnecting the control board
- simple parallel coupling of chargers to achieve higher charging power
- design with focus on high reliability and efficiency
- indication of operation parameters
- is compliant with all safety and EMC requirements
- possibility of adding UM-01AC rectifier module and charging battery from the grid
- power reduction with increasing temperature of the charger - avoiding charger overheating
- inbuilt DC input fusing
- possibility of extending the standard warranty
Communication possibilities:
- communication interface RS485, communication protocol MODBUS RTU, for connecting the control system
- user friendly graphical display
- communication module RM-WEB for on-line visualization
TECHNICAL DATA - FOTO CHARGER DC 48
| Rated permanent power | PN = 3000 W at ambient temperature TA up to 25 °C and input DC voltage higher than 375 V Power PN is reduced with increasing ambient temperature TA above 25 °C. |
|---|---|
| Maximum input voltage of PV panels | 600 V |
| Maximum input voltage of PV panels | 170 V |
| Input voltage range for MPPT | 180 ~ 550 V |
| Rated input DC current | 9 A |
| Rated output voltage | 57 V |
| Output voltage operating range | 42 ~ 64 V |
| Rated output DC current | 52 A |
| Peak / Euro Efficiency | 95 % / 94.4 % |
| MPPT adaptation efficiency | >99 % |
Technical specification
| Control unit | UNF03E2 / processor control board, equipped with Texas Instruments DSP |
|---|---|
| Communication | RS 485 with MODBUS RTU protocol, USB |
| Input fusing | Inbuilt fuses, surge protections, electronic protections |
| Output fusing | Electronic protections |
| Display | Inbuilt graphical, monochromatic display |
| Analog inputs | 2 x / 0 (4) – 20 mA / 0 (2) – 10 V |
| Analog outputs | 1 x / 0 (4) – 20 mA |
| Digital (binary) inputs | 4x (BIN1, BIN2, BIN3, BIN 4) |
| Digital outputs | 2x (BOUT1, BOUT2) |
| Emergency input | 1 digital, EN 13849-1 category 3 |
| Cooling | Natural air cooling, forced by inbuilt fan |
| Absolute altitude of the permitted usage | ≤ 1000 m above the sea, 1% reduction of power for every 100 m above 1000 m. The installation site altitude in operation is from 0 to 2500 m. |
| Relative humidity of the air | ≤ 95 % without corrosive and explosive gases, without water vapor and condensates |
| Ambient working temperature TA | + 2 °C ~ + 55 °C |
| Cover | IP23 (IP43 optional) |
| Storage ambient temperature | - 20 °C ~ + 70 °C |
| Standards compliance | Safety: EN 50178 EMC emissions: EN 61000-6-3 EMC immunity: EN 61000-6-1 Harmonic distortion: EN 61000–3–11, EN 61000–3–12 |
Accessories
Rectifier module UM-01/230AC
Rectifier module UM-01/230AC rectifies single-phase input voltage 230 V AC, 50Hz, to output DC voltage to
power the FOTO CHARGER DC 48 charger. Combining the rectifier module UM-01/230AC and FOTO CHARGER DC 48 charger,
grid charger is created. The requirement to recharge the battery from electrical grid is based on long-term low light
state of solar panels and discharged battery.
RM-WEBi
The module RM-WEBi can be connected to FOTO CONTROL 1f inverters and FOTO CHARGER solar chargers to provide visualization of data from the devices through a web page on the local network. Website is compatible with most commonly used browsers. This page is also compatible with mobile devices like smartphones and tablets.
To access the Internet, it is necessary to ask for the public IP address at your Internet service
provider or administrator and configure redirection in the local router.
Features
- Individual device mountable on DIN rail
- 24V DC power supply
- 1x Ethernet RJ45
- 1x Modbus RTU RS485
- Maximum number of connected devices: 10
- Možnosť archivácie dát na SD kartu
Functions
- Simple WEB page (HTML5 a JavaScript)
- E-mail notification
- Simple block diagram of installed photovoltaic system
- View the basic parameters of the inverter and charger
- Archiving - Backup of collected data (.csv file)
- Monitor - Parameters monitoring according to the selected ID
- Admin access - setting the basic parameters of the system
- Battery Management (for hybrid photovoltaic system, or off-grid system) - setting the parameters of the battery, battery charging modes
