54
107031-33-EN FR26 GLO 1101 Printed in France
Figure 4-13 Connection of Two Safety Light Curtains
(using independent stop circuit safety relays)
Five safety relays, K1, K2, K3, K4 and K5 are used as follows:
(dc-)
K3 K5
(1)
K5
FSD
K3 K4
(1)
K4
FSD
K5
Stopping
valve
S
in
g
le
ch
a
n
n
e
l m
a
ch
in
e
co
n
tro
l circu
it
(dc+)
1 A Fuse
1 A Fuse
1,5 A max
Fuse
(dc-)
FF-SYA
receiver
A
1
2
FF-SYA
emitter
A
1
2
4
3
4
5
O
S
S
D
2
O
S
S
D
1
5
K3 K2
(1)
K2
FSD
K3 K1
(1)
K1
FSD
internal
fuse
internal
fuse
K3
K4
K5
(dc+)
1 A Fuse
1 A Fuse
1,5 A max
Fuse
FF-SYA
receiver
B
1
2
FF-SYA
emitter
B
1
2
4
3
4
5
O
S
S
D
2
O
S
S
D
1
5
internal
fuse
internal
fuse
K3
K1
K2
NO P/B
K1
K2
K3
(1)
K3
K4
K5
K1
K2
K4
K3
Fuse
(*)
(*)
(+)
(-)
(*)
(*)
(+)
(-)
6
6
(1) : 31 Vdc varistors
NO P/B : Cycle-start push-button (Normally open contact)
(*) : use pin 3 for the FF-SYA
GGGGG
Q2E emitter and pin 7 for the FF-SYA
GGGGG
Q2R receiver
IMPROPER CONNECTION OF LOAD
For safety reasons, the loads must be connected between terminals 4-6 and between terminals 5-6 .
Failure to comply with these instructions could result in death or serious injury.
If the sensing field of one safety light curtain is interrupted, the other goes immediately into the RED condition.
F
SYA8
8