2.7.3 - Float Mode
Figure 3. Charge profile for Float Mode
Figure 3 defines the charge profile for the Float Mode. In this mode of operation, batteries are maintained at full charge. In addition to maintaining full charge, the charger can support a load current – as long as the combined load current and battery charging requirements do not exceed the output current defined in the Constant Current setpoint (Icc, default value of 20A in the Basic Mode).
In this mode of operation, the charger will go through bulk charge and Constant Voltage modes as previously described. It then goes into standby until the battery voltage drops 0.4V below the Float Voltage (Vfloat, default value of 26.8VDC in Basic Mode) setpoint. The charger will then reactivate and maintain float voltage as long as the current requirement is above 2A. If current drops to 2A, the charger will again enter standby mode. The charger will continue this cycle of standby/ reactivation until power is removed or until the Model 1311 programmer is con- nected.
page 15 | Curtis 1620 Manual |