ABB O3ED Input logic module

The reassembling is the reverse sequence of that used to remove the module. A) Adjust the front panel controls fully counter clockwise. B) Apply AC power and turn the front panel CB on. C) Advance the current control fully counter clockwise and slowly adjust the voltage control until system output voltage is achieved. D) Apply full load current and the output voltage deviation should be less than 0.1% of maximum output. The unit can now be returned to service.

A900 OVP BOARD 

A) After the board has been replaced, the operation of the board should be checked. B) Apply AC power and turn on the CB. C) Adjust front panel OVP control fully clockwise, as the voltage of the set increases to the front panel setting of the voltage pot on front panel, turn the OVP control pot counter clockwise until the OVP activates. After the OVP has been activated, turn CB off and return OVP setting to the desired point. Turn CB back to verify that set is functioning properly.

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