Owner`s manual

2.3.5.1 Power-Up Procedure
Turn the main source DC input circuit breaker ON to apply 48VC to the system. The “controller” boards and LCD
“Display” panels are now energized. The following message will be displayed (paragraph 4 of chapter 1 gives full
details of LCD readout):
Line 1: INV: off normal
Line 2: BYP: static AC LOW
If the system is equipped with two controllers, one controller will take control of the system, the other will be a back-
up. Assuming “Controller A” takes control of the system, the BYPASS Status LED (DS1) will be red, Inverter Status
LED (DS2) will be out, “Controller B” Bypass and Inverter LEDs (DS3, DS4) will alternately blink On and Off, red for
Bypass, green for Inverter. If “Controller B” takes control, its Status LEDs will be as for “Controller A” above.
If an external AC power source is used, turn on the source AC circuit breaker. After about 20 seconds the LCD
should display the following information:
Line 1: INV: off normal
Line 2: BYP: static normal
The “Status” LEDs will be as above, except the “Bypass” will be green if the AC input voltage is within proper limits
(voltage and frequency).
2.3.5.2 Powering Up the Inverters
DO NOT turn on the inverter switch SW1 yet! Turn the circuit breaker on each power module to the ON position.
The LCD “Display” panel is still displaying the above two lines. Now, everything is ready and the inverter switch,
SW1, can be turned ON (push-up). The “Status” LEDs will be as above, except that the “Inverter” indicator that was
out will now be green if the system is functioning properly. The inverter is now supplying the power to the system.
Using a voltmeter, verify that the proper voltage (100, 110, 115, or 120VAC) exist at the Power Distribution panel,
or 200, 220, 230, 240VAC exist if set for the higher output. System circuit breaker may now be turned ON.
2.3.6 De-Energizing the System
If the system is equipped with an AC input, turn off the main feed circuit breaker. Then turn switch SW1 to the
“Standby” position (push down). Next, turn all the power modules front panel circuit breakers OFF. Lastly, turn the
DC input supply circuit breaker OFF.
Owner’s Manual
Installation & Operation page 2 — 9