Argus 010-523-B2, User Manual

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AC power must be restored and the battery voltage must rise to 12.0 V (24.0 V) before the LVD
condition is cleared.
The low voltage disconnect will not function if the micro-controller is not functioning.
There will still be a maximum current draw of 60 mA on the battery (12 V or 24 V) for single output
systems and 80 mA from the 12 V battery and 20 mA from the 24 V battery in dual output systems
after battery cutoff to power some indicator LEDs and other circuitry needed to moniter the condi-
tion of the batteries and charger.
During low battery voltage cutoff all alarm relays will be deenergized (indicating: Charger Fail, NOT
On Battery and NOT Overvoltage Shutdown) regardless of the condition of the alarm.
3.3.3 Auto Equalize:
The unit will automatically change to EQUALIZE mode after being in float mode for 30 days. It will
remain in EQUALIZE mode for 24 hours and then automatically revert back to FLOAT mode.
When the charger changes to EQUALIZE mode the output voltage will increase (see Battery Output
Voltage Specification)
Individual cell voltages in a battery tend to drift over time unless the battery is cycled. The overall
battery voltage remains constant but some cell voltages will increase while others decrease.
Increasing the battery voltage periodically tends to equalize the individual cell voltages which opti-
mizes the battery reserve time and overall life expectancy.
3.3.4 Over Voltage Protection (OVP) Reset:
The unit will automatically reset an OVP trip up to 3 times in 1 minute. If more than 3 OVP trips oc-
cur in 1 minute, the unit will latch off. The unit can be restarted by pressing the RESET switch.
3.3.5 Temperature Compensation:
Compensation will be linear 21 mV / °C (12 mV / °F) for the 12 V output and 42 mV / °C (24 mV /
°F) over the temperature range 0 °C to +50 °C (+32 °F to +122 °F).
The temperature compensation has provision for 1 or 2 temperature probes. The second probe is
for redundancy and is not intended to compensate a second battery string.
If two probes are used they must be located in the same area. If the probes are placed in different
locations and a temperature difference of greater than 5 °C (9 °F) exist between the probes the
compensation will be turned off and the TEMP COMP LED will flash. The charger will reset the volt-
age to the nominal float voltage at +25°C (+77 °F).
If the probes indicate a temperature above +100 °C (+212 °F) or below -75 °C (-103 °F) tempera-
ture compensation will be turned off and the TEMP COMP LED will flash. The charger will reset
the voltage to the nominal float voltage at +25°C (+77 °F).
See 'Temperature Compensation Probe Installation' for details on probe location and installation.
ARGUS TECHNOLOGIES 010-519-C0 Rev. A Page 4 of 15