English to Dutch Tech/Engineering Construction / Civil Engineering industrial doors

The LG blanks out the infra red beams without de-energizing its output when the
door leaf is descending.
When the door leaf obstructs the final beam, the LG de-energizes its output in order to simulate safety edge signal.

Context:
LG stands for Light Grid, a row of vertical lights emitting a beam, mounted on the side of the door, with a receiver on the opposite side. As the door goes down/closes, it breaks through these beams 'without de-energizing its output'

These beams are a safety device, when they are broken/obstructed while the door descends, the door will stop and reverse to its open position. When they are not broken, the door will keep descending, until it reaches the lowest beam.

Ik ben op zoek naar een vertaling van de zinssnede ' without de-energizing its output', maar ook een vertaling van 'blank out' is welkom!