In this tutorial, we'll look at how to align photocells and recognise when they are correctly aligned.
You will find below the meaning of the indicator lights on the photocells.
The Avidsen, Thomson and Extel electronic cards with which the photocells are compatible go into standby mode when not in use, thus cutting the power supply to the photocells.
See opposite
You can use an external power supply to power the photocells and manage their alignment.
If you are installing photocells while the card is powered up, first make sure that the card is not in standby mode (LED L0 on). To increase the delay before the card goes into standby mode, and to give you time to find the correct alignment of the photocells, set the card to manual mode (see opposite). The card will remain out of standby for 1m30 for CA2B9SL cards, and 2 min out of standby for AVLO cards.
The alignment limit is materialized by a loss of the beam when the motor starts up and creates its current peak.
The alignment is therefore good when the motor is stopped, and closing does not take place (with alerts from the board indicating a beam cut) as soon as the motor starts up.
Review the positioning of the photocells and try to recenter them.
