Operation

3.2.13Battery Equalize Screen

Go to the Master Menu and move the highlighted cursor to BATTERY EQUALIZE. Press the Select pad and the Battery Equalize screen is displayed.

The Battery Equalize screen enables the operator to adjust the battery equalize time. It is also used to choose between auto and manual battery equalize recharging modes. Note that AUTO MODE can be selected only from the System Control Cabinet (SCC). Selections made at the SCC override previous selections made at the UPS modules.

When the input utility power is interrupted, the battery supplies DC power to the UPS module invert- ers so there is no interruption of power to the critical load. When the AC input power is restored, the battery equalize recharging circuit can be activated automatically or manually to increase the module rectifier/charger output voltage to recharge the battery. The battery equalize circuit may also be man- ually activated at any time during normal float (constant) voltage operation. The equalizing time can be adjusted from 0 to 72 hours.

Figure 50 Battery equalize screen

SECURITY ACCESS

© 1989-2003

UP : CURSOR UP

DOWN : CURSOR DOWN

EXIT

SELECT : CHOOSE

BATTERY EQUALIZE RECHARGING

EQUALIZE TIME PERIOD (hrs.)

0

STOP EQUALIZE CHARGE

NO

MANUAL MODE

NO

AUTO MODE

YES

MANUAL / RESET TO AUTO MODE

NO

! CAUTION

Do not use the Battery Equalize mode if you have valve-regulated, sealed-cell (maintenance-free) batteries. Refer to your battery manufacturer’s manual, available on the manufacturer’s Web site.

EQUALIZE TIME PERIOD. This selection permits the operator to adjust the battery equalize time in one hour increments from 0 to 72. The battery equalize time must be greater than zero for the bat- tery to begin recharging in both the AUTO and the MANUAL modes. This period is set by use of the Up/Down pads and Select pad.

When the battery is at full voltage (not being recharged), this selection reads EQUALIZE TIME PERIOD (hrs). When the battery is recharging, this selection reads EQUALIZE TIME REMAIN- ING (hrs). After the equalize recharge time has expired, the indication returns to the preset equalize time.

STOP EQUALIZE CHARGE. This selection lets the operator halt the equalizing charge to the bat- tery at any time, whether the circuit was activated automatically or manually.

MANUAL MODE. This mode enables the operator to manually initiate a battery equalize charge to raise the DC bus voltage to correct a non-uniformity in the individual cell voltages or specific gravity readings.

AUTO MODE (SCC only). When the battery recharge control logic is in the AUTO MODE, the UPS module battery chargers attempt the equalization process only if the EQUALIZE TIME PERIOD is greater than zero, the battery voltage has been at or below the Battery Discharging alarm limit for longer than 30 seconds and the battery breakers (MBD) are closed.

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Emerson Series 610 manual Battery Equalize Screen, Battery equalize screen
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Series 610 specifications

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