EMIX EMBC-8025 Guía de inicio rápido
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OPERATIONAL MANUAL
EMBC-8025
INTELLIGENT BATTERY CHARGER
Version 1.5
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Product Overvie
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
E BC-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.
At the front panel, there is a large LCD status display of battery voltage, charging voltage, charging current,
battery connections and error message. The E BC-8025 intelligent charger is also equipped with a battery
low cut (BLC) feature that prevents the batteries from being over discharged. The build in smart cooling fan
turns when charge current reaches 1000mA. This process cools the power OSFET faster and much
quieter on standby mode.
E BC-8025 is suitable for charging batteries of up to 200Ah. Charging method is via PIC microcontroller
controlled constant current with float maintenance. ulti level protections are incorporated to prevent
premature batteries failure, such as battery low cut, battery over voltage charging, over current and
polarity reversed charging.
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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. Connected to charger cause serious over charging)
•Charge 24V batteries up to 10 to 200Ah (fully charge 24V/80Ah batteries within 24Hrs)
•Backup battery low auto disconnect and trigger buzzer sound alert
•240VAC main power failed and resumed monitoring
•Liquid crystal display (LCD) voltage, Ampere, battery conditions and error message
•Voltage Output with 24VDC (4A) utility power supply unit
•Output short circuit and overload protections
•Real main switch and fused AC input socket to avoid accidentally switching off system
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Front Vie and Rear Vie
Figure 3.1 Front view of Battery Charger
Figure 3.2: Rear view of the Battery Charger
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Front Panel and Rear Panel Indication
EMBC-8025 Intelligent Battery Charger ith Po er Supply
3.1.0 Front Panel Indicator
1 Mains LED – The power LED is red if the battery charger is connected to the main and switch on
2 LCD Display – Shows the battery voltage, charge current, charge voltage to the battery and error
message.
3.2.0 Rear Panel connection
3 Mains po er Inlet – A socket for connecting the battery charger to the mains power. ain voltage
of 240V ± 10%
4 ON/OFF S itch – Connects and disconnects the main power supply.
5 Po er Supply Unit (24VDC) – To equipments DC supply for total load maximum of 4A.
6 Battery in – Power Connector to the Batteries (Can be charged up to 200AH)
7 Backup Po er Supply (24VDC) – Power out connector to the 24VDC (>20A) limit output back-up
power on each contact for the E IX rack systems products.
** NOTE: It is very important to determine the size of cable for back up supplies. (Ex: Size of the cable from
Battery Charger to Battery and Battery Charger connect to others equipments).
** NOTE: Always Double Check on the positive (+) & Negative (-) priority before connecting to the unit
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Schematic Diagram / Connection diagram
I PORTANT:
The Batteries must
be connected to the
Battery Charger’s
OUTPUT
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Operation:-
Bul 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. When the preset length of time is reached and charging current drops to the preset level, the
charger automatically switches to float charge mode.
Float charge
The charging process range between 95% and 100%. The battery receives a pulse if the voltage falls. This
stage will keep the battery in a good condition if it is not being used.
Equalization
BATTERIES ARE DANGEROUS
The E BC-8025 is design to charge 24V SLA (Sealed Lead-Acid) battery of 10A to 200A (over 4KW of DC
power). It is of UT OST importance that you follow the instructions each time you use the charger.
** NOTE: ost of the battery would drained significantly over night
** NOTE: E BC-8025 must be connected to the batteries with minimum voltage of 16V for normal
operation.
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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.
Figure 4.1: Charge current
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
Figure 4.3: Output voltage (mains voltage removed)
Bulk Absorption Float
18V
V
Bulk Absorption Float
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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).
A battery voltage below 18V will automatically disconnect the load from the battery (this is for deep
discharge protection). When the mains voltage is restored, the unit will reset and start to charge the
battery to be ready for the next power failure.
** NOTE: If E BC-8025 Battery charger couldn’t detect any battery, kindly check the battery manually by
using ulti-meter or contact us through our website. Battery’s minimum voltage must be 16V.
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Setting on Current Charging:-
ain Control Board
E BC-8025 Internal Structure
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
Power Supply Unit
Power Supply Unit
Power Supply Unit
Fan
Front Panel
LCD
LED
Rear Panel
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