Honeywell SYA14 Series Manual page 57

IMPROPER USE OF THE FF-SYA LIGHT CURTAIN
•
The loads impedance allowed by the FF-SYA failsafe static outputs must be 55.2 Ω
minimum and 5kΩ 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
•
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 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 ouputs are connected to the FF-SRS5939 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 20pF / 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 guarantees the detection of an output short-circuit and the detection of
a short-circuit between the outputs (cross-fault detection). The FF-SRS5939 interface
control module is primarily designed to be interfaced with Honeywell fail-safe static
outputs. Compatibility with any other emergency stop relay module is not guaranted.
Figure 4-8 Wiring Diagram using the FF-SRS59392 safety relay module
(DC+)
Fuse Fuse
1 1
4 (+) internal
fuse
Optional test
input
(or
FF-SYA
jumpered)
internal FF-SYA
emitter
(-)
fuse
(*) (*)
5 receiver
2 2 6
(DC-)
Dual channel
machine control circuit
(recommended circuit)
Phase
(DC+)
Fuse
Fuse
K3 K4
Neutral
(DC-)
(1) : arc suppressors (220 Ω + 0.22 µF), NO P/B: cycle-start push button (Normally
open contact)
(*) : use pin 3 for the FF-SYAqqqqqQ2E emitter and pin 7 for the FF-
SYAqqqqqQ2R receiver
Figure 4-9 Wiring Diagram using three independent stop circuit safety relays
107031-23 EN FR26 GLO 1199 Printed in France
≤ 50000 / R
cable
Phase
(DC+)
Fuse Fuse Fuse Fuse
(1)
NO K3
FSD
P/
K3
B
K4
3 A1(+) S33 S34/Y1 Y2 13 23 31
FF-SRS59392
X3
relay module
K K
Signalling X1
1 2 contact
X2
internal
fuse
A2(-) S12 S22 14 24 32
4 5
(1)
K4
FSD
Emergency stop
Push-button
Neutral
(DC-)
Single channel
machine control circuit
Phase
(DC+)
Fuse
OR
K3
K4
Neutral
(DC-)
load.
57