User Manual

Button Functions:
• During normal charging operation, press once to change the display to show
• CH1, CH2 and CH3 voltage.
• During normal charging operation, press and hold for more than 3 seconds
to enter Charger Function Setting Menu
•
When CH2 or CH3 is not available (voltage detect is below the sense voltage),
display will turn OFF. Press once will temporary trigger on the display and
it will automatically cycle through all three channels voltage, the software
revision and then turn o.
• During the charger Setup Menu, this button is used to conrm the setting
and continue to the next menu.
• Manual Override Mode: During normal operation, when the input source is
charging from CH2, press and hold for more than 10 seconds to turn Priority
mode ON, ‘Priority’ icon on display will turn ON. This will force the charger
from being connected to CH2 and connect it to CH3 (subject to CH3 being
12.3v or 24.6V or higher). If CH3 is not connected or out of operating range,
it will go back to CH2. This setting mode is used when CH2 (Solar) is available
but the charging current is too small due to the availability of sunlight. Use the
same procedure to turn o the ‘Manual Override’ mode when not required.
•
Please Note: If Manual Override Mode is used and left on there is a risk of attening
the start battery. The preferred method is to use the automatic override method by
connecting the ignition source to the ignition terminal of the DC2DC 24V charger.
• With Flooded Battery Type setting, press and hold the “SET“ and “SEL“ buttons
together for more than 5 seconds will force the charger into Equalized Mode
and it will start equalizing the ooded battery. Please note; the battery has
to be set to ‘Flooded’ battery type in-order to have this function activated.
• During the charger Setup Menu, this button is used to change to the next
available setting.
•
‘Silent’ mode (Fan OFF mode): During normal operation, Press and hold for
more than 10 seconds will force the fan to turn OFF. ‘Auto’ icon will turn ON.
The charger current will reduce to half of the set current. The unit will go back
to normal after 12 hours and the ‘Auto’ icon will turn OFF.
•
Note: Every time the “MENU“, “SET“ and/or “SEL“ buttons are pressed, the back
light will illuminate and will automatically turn o after 60 seconds.
Automatic Override Functions:
When positive power is applied to the “Ignition Sense” terminal (do not connect to ground),
it will force the charger to connect to CH3 as long as CH3 is within the voltage range >12.3V
or 24.6V on a 24v input.
Programming Your Charger
Press and hold the key for longer than 3 seconds to enter charger setting mode and
show function setting. Once new setting is done, press ‘MENU’ again for longer than 3
seconds to exit the charger setting mode.
Press the key once to keep / save the chosen setting and change the display to show the
next menu to continue other settings.
Note: The selected setting will quickly ash 3 times to acknowledge the setting.
Press the key to view other available settings.
Understanding the Two-Stage (Mode 2) Charging
(Default setting is 3)
The DC2DC 24V can be set to act as a 2 stage charger (Bulk/Float). Certain applications may
require a 2 stage charge process and by setting this option, the DC2DC 24V unit will act
accordingly to meet this requirement.
During the Bulk stage, the battery accepts the maximum constant current from the charger.
In Float stage, the charger continuously produces a lower constant oat voltage to maintain
the battery in a fully charged stage.
Understanding The Three-Stage (Mode 3) Charging
The Three-Stage Charging (Mode 3) has a Bulk/Absorption/Float sequence. During the Bulk
stage, the battery accepts the maximum constant current from the charger. In the Absorption
stage, the battery voltage is held to constant voltage and the charging current will slowly
reduce. In Float stage, the charger continuously produces lower constant oat voltage to
fully top up and maintain the battery in a fully charged stage.
The charger will automatically restart the full charging cycle if it senses the battery bank is
discharged to lower than 25.0V for lead acid batteries and 26.6V for lithium batteries.
Understanding The Battery Temperature Functions
The Battery Temperature Sensor is included with the charger to protect your battery and
provide better charging voltage accuracy.
When the battery temperature sensor output is used, it is highly recommended to be
installed on the main battery bank at the negative terminal. The sensor senses the battery
Enerdrive ePOWER DC2DC 24V Battery Charger Owners Manual (Rev. 1.5) www.enerdrive.com.auPage 26 Page 27