SENS EnerGenius® DC Compact Technical Manual
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standard output settings (see section
if alternate output settings are required). After correcting a
mismatched condition, cycle AC and DC power to reset the charger and resume charging.
This safety feature can be temporarily defeated from the keypad or the SENS Setup Utility in order to
charge/commission a zero-volt or fully discharged battery. Use the keypad or SENS Setup Utility to set
the desired minimum startup voltage level and initiate a forced startup.
If the startup voltage level is set to zero, initiation of the startup charge will occur automatically.
9.6.
Commissioning Batteries
S
ome batteries require an initial “commissioning” charge that typically employs different charging
voltage and current limit values than the normal charger operating values. Set the commissioning
charging voltage and current limit values using the SENS Setup Utility or charger keypad. Commissioning
is not available for VRLA and power supply battery types. During commissioning the Over Voltage
Shutdown trip point is automatically adjusted upward to approximately 102% of the commissioning
charge voltage and the temperature compensation system is deactivated. After commissioning
completes, the charger automatically reverts to the settings configured for normal charging, including
temperature compensation and the Over Voltage Shutdown trip point.
9.7.
Battery Check
Battery Check determines if the system battery can support a parallel connected DC load. Battery Check
reduces charger output voltage to a configurable backstop level to permit the battery to support the
load. Once Battery Check is activated by the user it can be run either manually or scheduled to run
periodically. Manually activate a Battery Check, schedule a Battery Check to run automatically and
configure minimum voltage and duration using the keypad or SENS Setup Utility. Upon completion of the
test, the LCD displays whether the test passed or failed
for ten seconds or until the “Enter” key is
pressed. An in-progress Battery Check activates a fast flashing green DC LED. Battery Check failure
activates a fast flashing yellow DC LED. When this alarm is assigned to relay contacts BATTERY CHECK
relay contacts change to Fail state after delay. The BATTERY CHECK alarm latches by default. Clear a
latched Battery Check alarm using the keypad or SENS Setup Utility.
IMPORTANT:
A load less than about 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 recharge
switchgear relays for chargers in switchgear applications without a continuous current load.
9.8.
Restore Factory Defaults
Restore factory defaults using the front panel keypad or the SENS Setup Utility. Values that will revert to
original factory settings include:
-
Battery type
-
Temperature Compensation Slope
-
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
-
High DC Voltage
-
Commissioning Time
-
Battery Check Voltage
-
Commissioning Charge Voltage
-
Over Voltage Shutdown
-
Commissioning Current
9.9.
Keypad Operation
The front panel keypad provides the ability to adjust charger settings without the SENS Setup Utility.
