Operational Modes; Float Charge; Equalize Charge; Battery Operation - Ametek ASCEND Series Operation Manual

Single phase modular charger

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Ascend Single Phase Charger Operation Manual

5. OPERATIONAL MODES

Float mode is used to maintain stationary batteries in a fully charged state. When the charger is in Float

mode the output voltage is maintained at the float voltage setting. The Charger is nominally set at

2.25V/cell or 135 Vdc.

Adjustments to the Charger Float voltage are made through the Setup menu. Consult the specific

battery manufacturer specifications for the exact setting.

Equalize charge uses a higher voltage than the float mode to obtain equal charge in all cells. This setting

is typically 2.33V/cell or 140 VDC. The Equalize mode can be manually initiated and will remain in the

mode until the Equalize timer expires or Float mode is manually pressed. Refer to battery

manufacturer's information for proper equalize settings.

Pressing the battery icon on the Mimic screen, and confirming the change, sets the output to Equalize

Mode and initiates a timed cycle indicated on the equalize timer. Adjustments to the Charger Equalize

voltage and timer are made through the Setup menu. Consult the specific battery manufacturer

specifications for the exact setting.

Equalize parameters can be modified, see section 6.6.2. Float/Equalize Modes.

When AC input power fails, the batteries change from a charging state to a dischaging state. No actual

switching takes place. When AC power is restored, the charger will automatically restart and begin

charging batteries. During recharge, the charger output voltage may be redeuced to limit output

current from the charger. No attempt to adjust charging voltage should be made until battery current

has been reduced below maximum output current from the charger.

During a power failure, the display will discharge batteries approximately 10 W with the display on and

approximately 8W with the display in sleep mode. If power will be off for a long period of time, the

output breaker should be opened to avoid complete discharge of the battery.

If the communications with a module is interrupted, the modules switch to a 'droop' mode. The output

voltage level is maintained at reduced regulation, the voltage outut setting cannot be changed.

95-100167, Rev A

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