SENS MicroGenius S2/S4 Technical Manual
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standard output settings (see section
9.7
if alternate output settings are required). If the voltage does
not rise appropriately within 5 minutes the charger will shut down. This shut down prevents long-term
overcharge of a 12V battery in the event of a mismatched battery (a 12V battery is connected to a 24V
system). After correcting a mismatched condition, cycle AC and DC power to reset the charger and begin
operation.
9.7.
Commissioning Batteries
Initially charge/commission zero charge batteries with configurable output voltage and current by
activating Commissioning Mode from the keypad or SENS Setup Utility. Using the keypad, navigate to the
“Battery Set-up” menu to enable commissioning and configure commissioning voltage, current and
duration. Select the appropriate output for chargers with multiple outputs. Each output is configured
independently. Commissioning is not available for VRLA, AGM, power supply and ultracapacitor battery
types. During commissioning the Over Voltage Shutdown alarm occurs at approximately 102% of the
commissioning charge voltage and temperature compensation is not active. After commissioning
completes, the charger will automatically revert to the settings configured for normal charging, including
temperature compensation and the Over Voltage Shutdown alarm.
9.8.
Battery Check
Run a Battery Check test to determine if a battery can support a load. Battery Check will reduce charger
output voltage to a configurable backstop level to permit the battery to support the load. Activate a
Battery Check using the keypad or SENS Setup Utility. Using the keypad, navigate to the “Battery Check”
menu to enable a Battery Check and configure battery check minimum voltage and duration. Select the
appropriate output for chargers with multiple outputs. Each output is configured independently. Upon
completion of the test, the LCD will display whether the test passed or failed for ten seconds or until the
“Enter” key is pressed. If the audible alarm is enabled, a single beep occurs when the battery check
results are displayed. Schedule a Battery Check to run automatically by setting the Scheduled Battery
Check interval in the “Battery Check” menu. An in-progress Battery Check activates a fast flashing green
DC LED. Battery Check failure activates a fast flashing yellow DC LED. Alarm/communications circuit
board BATTERY CHECK relay contacts change to Fail state after delay when alarm is assigned to relay
contacts. Clear a failed Battery Check alarm using the keypad by scrolling to the “Alarms & Settings”
menu then selecting the “Battery Check” option and pressing the UP arrow.
IMPORTANT:
A load less than 3% of the charger output maximum current rating may cause inaccurate
battery check results. If the system load is typically lower than 3% disable the Scheduled Battery Check
feature. Battery Check will not indicate whether a battery is healthy enough to start a generator or
engage switchgear relays for chargers in typical genset or switch gear applications without a continuous
current load.
9.9.
Restore Factory Defaults
Restore factory defaults using the front panel keypad by scrolling to the “Battery Set-up” menu and
selecting “Restore Factory Default Settings.” The following values will revert to original factory settings:
-
Battery type
-
Charge voltage temperature compensation
-
Cell count
-
Auto Boost Time Limit
-
Float Voltage
-
Periodic Scheduled Boost Interval
-
Boost Voltage
-
Periodic Scheduled Boost Duration
-
Battery Discharge Voltage
-
Low Current Alarm
-
Low DC Voltage
-
Battery Check Interval
-
Battery End of Discharge Voltage
-
Battery Check Duration
-
Low Crank Voltage
-
Commissioning Time
-
High DC Voltage
-
Commissioning Charge Voltage
-
Battery Check Voltage
-
Commissioning Current
-
Over Voltage Shutdown
