5. Operation
On first power up:
The Filax does not have an on/off switch. As soon as the priority source and/or the alternate input is powered, the Filax will power up.
On first power up the yellow "alternate source" LED will be on. This is even the case when the priority source is powered. After a 30 second wait, the "alternate source" LED will turn off and the "priority source" LED will turn on. The loads are now powered by the priority source and the Filax is operational.
General operation:
Operational mode | LEDs | LEDs |
Normal operation. The load is supplied by the priority source supplied. | Yellow "priority source" LED |  |
The priority source has failed or has been interrupted, the load is now powered by the alternate source. The transfer takes less than 16ms. | Yellow "alternate source" LED together with the Red "priority fault" LED |  |
The priority source is back online, but the load is still supplied by the alternate source. The Filax is analyzing if the priority source is stable before it transfers the load back to the priority source, this will take approximately 30 seconds. | Yellow "alternate source" LED |  |
Normal operation. The load transfer back to the priority source is complete and the load is supplied by the priority source. | Yellow "priority source" LED | |
The load is transferred from the priority source to the alternate source when:
The voltage of the priority source drops below the threshold value.
The frequency of the priority source drops below the low frequency threshold value, or increases beyond the high frequency threshold value.
The load is transferred from the alternate source, back to the priority source when:
The priority source has operated within the voltage and frequency reverse switching limits for 30 seconds.
Tip
For the voltage and frequency thresholds, see the Technical specifications chapter.