47
TriStar MPPT-600V-TR Operator's Manual
Float Cancel Voltage
1:00
2:00
3:00
4:00
5:00
6:00
46.00 V
Bulk
Absorption
Float Cancel Voltage
time (hrs)
Float cancelled this charge cycle
Figure 4-5. Float cancelled charging profile
If the battery bank discharges below 46.00 Volts the previous night, Float charging stage will be
cancelled for the next charge cycle. Figure 4-5 above illustrates this concept. At 0:00 hrs (dawn),
battery voltage is below the Float Cancel threshold voltage. The diagram shows where Float
stage would have occurred if Float was not cancelled.
Equalize Time-Out
1:00
2:00
3:00
4:00
5:00
6:00
Absorp. V
Bulk
Float
Equalize
Equalize timeout
time (hrs)
Equalize V
Figure 4-6. Equalize time-out charging profile
The charging profile in figure 4-6 shows an
Equalize Time-out
event. The time-out timer begins
as soon as battery voltage exceeds the Absorption voltage set-point. If there is insufficient charg
-
ing current or system loads are too large, the battery voltage may not reach the Equalize set-
point. Equalize Time-out is a safety feature that prevents high battery voltage for extended peri-
ods of time which may damage the battery.
