11
3
Operation
3.1
Starting the SGC
All equipment is shipped from the factory fully checked and adjusted based on the factory settings listed
below. Before connecting the battery, check with the battery manufacturer for the correct voltage settings
and adjust the configuration accordingly (refer to Section 4 for configuration). Failure to match the
charger settings with the connected battery may damage or shorten the life of the battery.
Factory Settings
The factory settings of the SGC are based on the customer order, unless otherwise specified. All chargers are set
at the factory with the following default settings.
Parameter
Lead Acid
Nickel Cadmium
Delay (sec.)
Float Voltage
2.17 V/C
1.44 V/C
Equalize Voltage
2.33 V/C
1.55 V/C
Low DC Voltage
1.98 V/C
1.20 V/C
5
Low DC Current
0.5 Amps
5
Current Limit
110% of nominal output current
5
High DC Voltage
2.45 V/C
1.61 V/C
5
High Voltage Shutdown
2.50 V/C
1.65 V/C
5
End of Discharge
1.75 V/C
1.10 V/C
5
Equalize Timer Mode
Manual
Equalize Time
8 Hours
NOTE:
V/C
–
Volts/Cell.
3.1.1 Checking the Installation
Before starting up the SGC, check and verify that all connections are correct. Check that all terminations and
contacts are tightened securely. Check that the transformer is set for the correct input voltage. Check that the
input frequency matches the nameplate of the charger. Check that the battery voltage matches the DC output
voltage on the nameplate of the charger.
3.1.2 Starting/Stopping the SGC
Once proper connections are established, energize the charger by turning on the charger
’s AC breaker (the DC
breaker should be off). This will charge the capacitors inside the charger and eliminate heavy arcing when the
batteries are connected. After about 30 seconds, turn on the DC breaker. When shutting down the SGC, switch
off the AC breaker first and then switch off the DC breaker.
3.1.3 Start-Up Sequence
Upon powering up the SGC,
the LCD will display “La Marche
SGC
”
. During the startup sequence, the Low DC
Voltage alarm will be temporarily activated. T
he display will show “
FLOAT MODE
” and the output
voltage and
current of the charger will slowly ramp up. After reaching the output voltage, the Low DC Voltage alarm will
deactivate.
