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3.4.7 Temperature
Compensation
Temperature Compensation
is a standard feature of the
A77 charger.
Temperature Compensation adjusts the output voltage of the charger based on the temperature at the probe.
To enable temperature compensation select “Temp. Comp.” in the “Output Settings” menu. Temperature
compensation is adjustable between 0.001 – 0.005 volts/cell/°C.
Ex: The output of a 60L charger with
temperature compensation set to 0.002V/Cell/°C would decrease by 0.12V for every 1°C increase in
temperature.
3.5
AC Volts Scale
The “AC Volts Scale” option is included for chargers that have multiple input taps.
This setting adjusts the scaling used to measure the chargers AC voltage. If the
charger has a single input voltage, do not adjust this setting as it affects the AC
failure alarm.
3.6 Alarm
Settings
The “Alarm Settings” menu provides access to adjust all settings related to the
alarms. The user can set the threshold values that trigger an alarm, the time delay
before an alarm triggers, which alarm conditions are included in the summary alarm,
and the function of alarm relays.
3.6.1 Alarm
Thresholds
The Alarm Thresholds setting allows the customer to determine the current or voltage value at which an alarm
triggers. The threshold can be changed for High Voltage Shutdown, AC Failure, Low DC Current, Low Voltage
Alarm Reset, Low Voltage, End of Discharge Reset, End of Discharge, High Voltage, and Ground Fault Current.
When an alarm threshold value is changed and ENTER is pressed, the charger immediately uses these new
values. However, if the user exits out of the SETTINGS MENU without saving, the threshold values will revert to
the previously set thresholds (before the menu was entered).
Alarm threshold defaults above are based on a 240Vac charger input and a 60L charger output. The alarm
threshold values shown above are not representative of the default values for all A77 chargers.
Note: Ground
Fault Alarm adjustment is only available on chargers that are built with Option 19U. Note: The Default Low
Current Alarm is set as 5% of the shunt full scale rating (refer to Appendix C).
>Alarm Threshold
Alarm Delay
High Voltage SD
Alarm 150.0 V
AC Alarm
199.2 V
Low DC Current
Alarm 0.5 A
Low Voltage
Reset 5 Percent
Low Voltage
Alarm 118.8 V
End of Discharge
Reset 123.0 V
End of Discharge
Alarm 105.0 V
High Voltage
Alarm 147.0 V
Gnd Fault Alarm
1.5mA
>Temp. Comp.
Battery Type
Temp Comp?
OFF
Temp Comp Rate?
0.002 V/CELL/C
>AC Volts Scale
Alarm Settings
>Alarm Settings
Comm. Settings
Содержание A77
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