Alignment of photocells

Alignment of photocells

Alignement des photocellules

We will discuss in this tutorial how to align and recognize a good alignment of photocells

Difficulty: Easy
Time required: 2 minutes
Number of steps: 2
Updated: October 2025
Rappel du branchement

Reminder of connection

For connecting photocellules, we invite you to consult the dedicated tutorials for cardsAvloandCa2b9s

Avant Propos

Before Proposed

You will find below against the meaning of the lights present on the photocells.

The Avidsen, Thomson and Extel electronic cards with which photocells are compatible are put on standby in case of non-use, and therefore cuts the power of photocells.

Etat des voyants

State of seers

See below

Etape 1 En cas d'installation alors que la cart...

Step 1: In case of installation while the card is not powered on

You can use an external power supply to power photocells and manage their alignment.

Etape 2 Alimentation via la carte électronique

Step 2: Power supply via electronic card

If you install photocells while the card is powered on, first make sure that the card is not on standby (see L0 on)

In order to increase the delay before the card is put on standby, and to give you time to find the right alignment of the photocells, put the card in manual mode (see opposite). The card will remain out of standby for 1m30 for CA2B9SL, and 2 min off standby for AVLO cards.

Limite d'alignement

Alignment limit

The alignment limit is materialized by a loss of the beam at the time the motor starts and creates its current peak.

The alignment is therefore good when the engine is shutdown and closing is not done (with alerts of the map indicating a beam cut-off) as soon as the engine is started.

Then return the positioning of the photocells and try to refocus them.