Curtis Computer 1608 - Manual (Page 8)

Amp hour Capacity
Amp hour Capacity is the storage capacity of the battery, as defined by the
battery's manufacturer. Selecting the appropriate amp hour capacity determines
the longest period of time the charger will charge before automatically shutting
off. If the charger is still charging at this point, it provides an error code to the
operator. Refer to Section 5, Troubleshooting, to correct this error. Three Amp
hour Capacity setpoints are available:
Option Amp hour rating Charge Cycle Timer (tc, see Fig. 1, 2, 3 and 4)
(4A / 8A charger) (hours)
1 ≤60 / ≤100 16
2 ≤100 / ≤200 24
3 ≤200 / ≤400 48
End of Charge Mode
End of Charge Mode defines how the charger terminates the charge cycle. There are
three End of Charge Modes:
Option
Mode Notes
1 End of Charge Charge Profile: IVa
(see Figure 1) Charger goes into standby upon reaching End of Charge
current. Charge will automatically restart if the standby
voltage falls below 12.9V (12V charger) 25.7V (24V charger),
and automatically self terminates. This compensates for battery
self-discharge over long periods of time. This mode is recommended
for daily use or for long term storage.
2 Equalize Charge Profile: I
1
VI
2
a if previous mode was End of Charge
I
1
V
1
I
2
V
2
if previous mode was Float.
(see Figure 2 After constant voltage terminates, charger adjusts its output
and Figure 4) current to 1.5A/3A (4A/8A charger). The current is held
for either 3 hours or until the battery reaches 15.8V (12V
charger) or 30.5V (24V charger). The Equalize cycle automatically
reverts to the previous mode of charge termination after
the completion of 1 cycle. Check the battery manufacturer’s
recommendation regarding the frequency at which batteries
should be equalized.
3 Float Charge Profile: IV
1
V
2
(see Figure 3) After constant voltage terminates, the charger reduces the
output current to 0.25A (24V charger), and cycles on and off
automatically to maintain an average battery voltage of (float
voltage, FV) 13.3V (12V charger) or 26.6VDC (24V charger).
This will continue until AC power is recycled. This mode of
charging is recommended for daily use or for short term
storage conditions to maintain battery health.
Fan Modulation - Default setting: Off
Fan Modulation can be turned on or off. If fan modulation is set to Off, the fan runs
at full speed whenever the charger is charging. This maximizes charger power output
over all operating conditions. If fan modulation is set to On, the speed of the fan is
proportional to the temperature of the charger. This mode of operation is quieter.
Curtis 1604/08 Manual page 6