Alpha Technologies CXPS 48-2T 48V Pos Gnd - Manual (Page 37)

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6 System Startup
Visually inspect the installation thoroughly.
After completing the system installation and power system wiring, perform the following startup and test
procedure to ensure proper operation:
6.1 Check System Connections
• Ensure ac is off, battery is disconnected, and all power modules are removed from the shelf.
• Triple-check the polarity of all connections.
6.2 Verify AC and Power the Rectifier Shelf
• Install one power module.
• Verify ac input voltage is correct and turn on the corresponding feeder breaker.
• The power module OK LED should illuminate after a preset start delay.
• Using the CXC, test functionality of various module alarms and controls.
6.3 Check Battery Polarity and Connect
• Verify correct battery polarity using a voltmeter (ensuring no cells or batteries are reversed).
• Connect battery as required to the output of the system.
• Install remaining power modules.
• In the adjustments menu of the CXC, set float and equalize voltage to the levels specified by the battery
manufacturer.
• Using the CXC, test functionality of various module alarms and controls. In addition, perform a load test with
the system using a resistive load box as needed.
• Enable the temperature compensation (temp comp) feature (Batteries menu) and program the settings for
slope and breakpoints (upper and lower) with respect to the specific batteries used.
6.4 CXC Reset
The reset button located on the front panel of the optional CXC is for restarting the microprocessor. When
pressed momentarily, the unit beeps twice then resets. The front-panel LED’s will illuminate temporarily, but will
extinguish after the system has finished its 15-second self-test.
WARNING
Before removing a CXC from a live system, or performing controller maintenance, an external LVD
override is required to avoid a disruption of service.
The LVD Control functions are hardwired directly from the assigned relay output to the LVD override control and
distribution alarm card (Figure 13).
Place the LVD Control switch to the OVERRIDE IN position to keep the LVD contactor engaged.
NOTE: The single LVD Control switch will override both upper and lower tier LVDs when placed in the OVERRIDE IN
position.
WARNING
Do not leave the switch in the OVERRIDE IN position. Doing so may result in a complete discharge
of the batteries during a power failure situation.
To allow the CXC to resume automatic control of the LVD contactor, check that the AUTO IN (green) LED is lit
confirming that the CXC will keep the LVD contactor engaged. Then you may return the LVD Control switch
to the AUTO IN position.
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