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SECTION 2 - OPERATION
The charger utilizes a standard ferro-resonant transformer, which provides isolation from the AC service
line and regulates the charging current. The transformer output is connected to a full-wave bridge of
silicon diodes, which provides DC charging current to the battery.
The starting charge amps and length of time required for a charge vary depending on the charger model.
See the data plate on the charger for information.
2.1.1 046-0371 Control Feature Summary
• Charges flooded or sealed batteries.
• Automatic start when battery is connected or manual start (if selected).
• Automatic stop when charge is finished.
• Fully charges partially discharged batteries without overcharging.
• Dead battery ‘jump start’ for overly-discharged batteries.
• Equalize charge by user request or automatic equalize settable from 1-30 charges.
• Automatic refresh charging when set time has elapsed.
• Automatically resumes charge after a power failure (if auto-start selected).
• Displays charging amps and volts per cell during the charge cycle.
• End Voltage, end current, AH, and run time can be displayed during charge, at the end of charge, or after
disconnecting the battery.
• Delayed start adjustable from 0 to 24 hours (if auto-start selected).
• Displays code if an abnormal charge indication is detected.
• Cool down timer after the charge is complete (if selected).
2.1.2 Description
The front panel has a 16 character LCD display which normally shows charging amps and volts per
cell along with a periodic message showing the charger state. This display also presents messages if an
abnormal charge indication is detected. A yellow ‘Charging’ indicator lights while the charger is charging.
A green ‘Complete’ indicator lights when the charge is complete. A red ‘Fault’ indicator lights if an
abnormal charge indication is detected.
The front panel has STOP, =, EDIT and INFO buttons. A charge can be stopped by pressing STOP
and resumed by pressing STOP again. While charging, an equalize charge can be requested by pressing
= and turned off by pressing =. During or after charge, the charge information may be obtained by
pressing INFO.
2.1.3 Operation
The 046-0371 control is used in ferro-resonant taper chargers to provide fully automatic battery
charging. The control has a charging profile that handles standard flooded lead-acid batteries. The
charging profile, or algorithm, uniquely monitors the output current and voltage to optimally charge the
battery, based on battery manufacturer’s recommendations.
The control offers several safeguards to protect the battery. If a wrong voltage battery is connected,
the charger does not start and a Low-Battery-Voltage (F3) or High-Battery-Voltage (F4) message is
displayed. While charging, if the battery voltage exceeds a profile-specific cut-off value, the charge
terminates with an end on voltage message.
2.1.4 Normal Daily Charge
When no battery is connected, the LED indicators are off and the LCD display shows ‘0A 0.00VC’.
With the auto-start feature enabled, connecting a battery to the charger causes it to begin a charge cycle.
The charger first performs a self-diagnostic test to verify the control is working properly. During this time a
lamp test is performed causing all display segments and indicators to light. This allows the operator to