OPERATIONAL MANUAL EMBC-8025 INTELLIGENT BATTERY CHARGER Version 1.
Product Overview EMBC-8025 is an intelligent switching mode battery charger with float maintenance. It is designed to offer maximum life for battery. It represents the state-of-the-art of today’s technology for battery changer. The EMBC-8025 is a 2-in-1 battery charger and switching power supply with overload and short circuit protection. The charging unit includes three stages, BULK, ABSORPTION and FLOAT intelligent battery charger with protection against terminals reversed and shorted.
Features • Intelligent PIC microcontroller controlled 24V battery charger • Constant current charging with Float maintenance • Battery over charge protection (exceed batteries limits) • Battery charge terminals reversed protection (cause serious damage to batteries and equipment) • Input over voltage protection (48V Batt. Connected to charger may damage internal circuitry) • Input low voltage protection (12V Batt.
Front View and Rear View Figure 3.1 Front view of Battery Charger Figure 3.
Front Panel and Rear Panel Indication EMBC-8025 Intelligent Battery Charger with Power Supply 3.1.0 Front Panel Indicator 1 2 Mains LED – The power LED is red if the battery charger is connected to the main and switch on LCD Display – Shows the battery voltage, charge current, charge voltage to the battery and error message. 3.2.0 Rear Panel connection 3 4 5 6 7 Mains power Inlet – A socket for connecting the battery charger to the mains power.
Schematic Diagram / Connection diagram IMPORTANT: The Batteries must be connected to the Battery Charger’s OUTPUT 6
Operation:Bulk charge (Constant Current Charge) Primary constant current charging where approximately 80% of the charging happens. The charger delivers maximum voltage until the terminal voltage has risen to the preset level. After a number of hours, the charger goes on to the next phase of charging (absorption). Absorption (Constant Voltage Charge) Final charging to almost 100%, voltage is kept at the preset level. During this case, the current is gradually reduced.
Charge voltage and current:When the unit is connected to the battery (battery series), the charge current and charge voltage are as shown in figure 4.1 and figure 4.2 respectively. Bulk Absorption Float Figure 4.1: Charge current Bulk Absorption Float Figure 4.2: Charge voltage When the main voltage is removed, the output voltage on the main 24V output is shown in figure 4.3 18V V Figure 4.
Operation:When switching from the mains to the backup power: • The main system output will decrease in voltage from the charge voltage to the battery voltage (the system will not be affected by this). • The auxiliary outputs can have a small dip in voltage, depending on the load (if the load is very high, the system may report this as a fault (blinking or blank-out) on the LCD Display).
Setting on Current Charging:Step 1: Press & Hold the button for 3Sec to enter into the charging current setting menu Step 2: Select the Current charging (1A to 5A) by pressing the button Step 3: Press & Hold the button for 3sec to escape the charging current menu Main Control Board Rear Panel Power Supply Unit Fan Power Supply Unit Power Supply Unit LED Front Panel LCD EMBC-8025 Internal Structure 10
Technical Specifications Input voltage 240V AC ± 10% Charging voltage 27V to 29V DC Minimum Charging Voltage 16V Bulk Constant current (PIC microcontroller controlled) Absorption 29V DC (Preset limit) Float 27V DC (Preset limit) Charging current 1 to 5A (PIC microcontroller controlled); Default is 3A Max Power consumption 200W Protections Over current, over voltage, over heating, short circuit, Low battery Indicator LCD status displays Battery volt, charge volt, charge current, battery cond
Dimension:- 12
Parts Included:Quantity Component 1 EMBC-8025 24VDC Battery Charger with Power Supply Unit 1 Operation Instruction Manual 1 Mains Plug 13
Only EMIX Technical Service Centers are allowed to make warranty repairs. Send the equipment directly to AV Electronics Marketing Sdn Bhd, or contact us for a list of Emix Technical Centers. This warranty is not valid if repairs are performed by unauthorized personnel or service centers. This warranty covers only repairs and replacement of defective parts. Costs and risk of transportation as well as removal and installation of the product/equipment from the main system are to be borne by the purchaser.
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