107031-33-EN FR26 GLO 1101 Printed in France
51
IMPROPER USE OF THE FF-SYA LIGHT CURTAIN
The loads impedance allowed by the FF-SYA safety static outputs must be 55,2
Ω
minimum and 5 k
Ω
maximum. The turn-on
voltage must be greater than 5 V on resistive loads or greater than 5 V on resistive loads or greater than 7 V on inductive
loads.
The maximum cable length between the FF-SYA static outputs and the loads mainly depends upon the loads resistance : the
cable length must be L
cable
≤
50000 / R
load.
If the FF-SYA light curtain outputs are connected on safety relays with mechanically linked contacts, the maximum cable
length between the FF-SYA outputs and the relays is greater than 100 m.
If the FF-SYA light curtain outputs are connected to the FF-SRM muting module, the maximum cable length between the
FF-SYA outputs and the muting module is 50 m.
If the FF-SYA light curtain outputs are connected to the FF-SRS59392 safety control module, the maximum cable length
between the FF-SYA outputs and the control module is 50 m (for cable length greater than 10 m, use a cable with a 20 pF / m
capacitance per unit length).
The cycle-start push-button is the normal push-button used to start the machine cycle and not an additional button for the
operator.
The cross-monitoring of the FF-SYA static outputs is based upon a self-checking principle which detects the output short-
circuit and the short-circuit between the outputs (cross-fault detection). The FF-SRS59392 interface control module is primarily
designed to be interfaced with Honeywell safety static outputs. Compatibility with any other emergency stop relay module is
not guaranteed.
Figure 4-9 Wiring Diagram using the FF-SRS59392 safety relay module
(dc+)
FF-SYA
emitter
FF-SYA
receiver
1
2
(dc-)
1
2
4
FF-SRS59392
relay module
K1
K2
Signalling
contact
NO
P/B
Neutral
(dc-)
5
X3
X1
X2
O
S
S
D
2
O
S
S
D
1
3
Phase
(dc+)
(1)
K3
FSD
Fuse
S22
S12
internal
fuse
A1(+)
A2(-)
31
23
13
32
24
14
Y2
S34/Y1
S33
K4
FSD
(1)
Fuse
K3
K4
internal
fuse
internal
fuse
4
5
Optional test
input
(or jumpered)
Fuse
Fuse
Fuse
Fuse
Single channel
machine control circuit
Phase
(dc+)
Fuse
K3
K4
Neutral
(dc-)
OR
Dual channel
machine control circuit
(recommended circuit)
Phase
(dc+)
Fuse
K4
Fuse
K3
Neutral
(dc-)
(*)
(*)
(+)
(-)
6
(1) arc suppressors (220
Ω
+ 0,22 µF),
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
F
SYA8
4
E
N