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Controlled Products Systems Group 109773 User Manual

Page 8

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24

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J1

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Fig. 23

Fig. 24

Fig. 25

Fig. 26

Fig. 27

Fig. 28

5.4.1.

Connection of photocells and safety devices

Before connecting the safety devices and photocells we advise
you to select the type of operation according to the movement
area they have to protect (see fig.24 for example):

Opening safety devices: they are tripped when an obstacle is

detected only during gate opening movement. They
cause immediate closure and resumption of opening
motion on release (see programming in par. 5.5.2.)

Closing safety devices: they are tripped when an obstacle is

detected only during gate closing movement. They
cause re-opening, either immediate or on release
(see programming in par. 5.5.2.)

Opening/closing safety devices: they are tripped during the

gate opening and closing movements. They cause
stopping and restart motion on release.

"Edge" safety devices: they are tripped during the gate opening

and closing movements. They cause immediate
reversal of motion and stopping after two seconds.

Encoder: it is tripped if there is an obstacle during gate opening

and closing movements. It causes immediate reversal
of motion and stopping after two seconds.

N.B. 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. 25).
N.C. contacts must be used.
N.B: If safety devices are not used, jumper connect the terminals
as shown in fig. 26.
The most common photocell and safety device lay-outs are
shown below (from fig. 27 to fig. 34).

230 Vac (max.

60W)

230Vac

50-60Hz

TOTAL

OPEN

PARTIAL

OPEN

STOP

For connection of the
photocells and safety
devices, see paragraph
5.4.1.

LIMIT-SWITCH

24 Vcc

max. 3W

Capacitor

5.4.

ELECTRIC CONNECTIONS

Closing

photocells

Closing photocells

Opening or

opening/closing

photocells

"Edge" safety devices

Connection of two N.C. contacts in series

(e.g. Photocells, Stop, Edge, etc.)

Connection of no safety device

Connection of a closing safety device and an opening

safety device

Connection of an "edge" safety device