FAAC 740, Manual

13

ENGLISH

 4.1. Connection of photocells and safety devices

Before connecting the photocells (or other devices) we advise you to 

select the type of operation according to the movement area they have 

to protect (see fig.3):

Opening safety devices:

they operate only during the gate opening 

movement and, therefore, they are suitable for protecting the area 

between the opening leaf and fixed obstacles (walls, etc) against the 

risk of impact and crushing.

Closing safety devices:

 they operate only during the gate closing mo-

vement and, therefore, they are suitable for protecting the closing area 

against the risk of impact.

Opening/closing safety devices:

 they operate during the gate opening 

and closing movements and, therefore, they  are suitable for protecting 

the opening and closing areas against the risk of impact.

“Edge” safety devices:

 they operate during the gate opening and closing 

movements and, therefore, they are suitable for protecting the areas 

between the moving leaf and fixed obstacles (pillars, walls, etc) against 

the risk of shearing and dragging.

Encoder (optional):

 operates during the gate opening and closing move-

ments and, therefore, it is suitable for protecting the opening and closing 

area against the risk of impact, crushing, shearing and dragging.

If two or more safety devices have the same function (opening, closing, 
opening and closing, edge), the contacts must be connected to each 
other in series (fig. 4). N.C. contacts must be used.

If safety devices are not used, jumper connect the terminals as shown in 
fig. 5.

The most common photocell and safety device lay-outs are shown below 

(from fig. 6 to fig. 13).

•

•

•

•

•

Fig. 3

Fig. 3

Fig. 4

Fig. 4

Connection of two N.C. contacts in series

(e.g. Photocells, Stop, Edge, etc.)

Connection of two N.C. contacts in series

(e.g. Photocells, Stop, Edge, etc.)

Fig. 5

Fig. 5

Connection of no safety device

Connection of no safety device

Fig. 6

Fig. 6

Connection of a closing safety device and an opening safety device

Connection of a closing safety device and an opening safety device

Fig. 7

Fig. 7

Connection of an “edge” safety device

Connection of an “edge” safety device

Fig. 8

Fig. 8

Connection of a pair of photocells for opening

Connection of a pair of photocells for opening

Fig. 9

Fig. 9

Connection of a pair of closing photocells

Connection of a pair of closing photocells

Fig. 10

Fig. 10

Connection of a pair of opening photocells, a pair of closing photocell

and an edge safety device

Connection of a pair of opening photocells, a pair of closing photocell

and an edge safety device

Closing

photocells

Closing photocells

Opening or 

opening/closing

photocells

"Edge" safety devices