Honeywell SYA14 Series Manual page 54

•
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 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 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 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).
Figure 4-6 Connection to the Machine Control Circuitry
(DC+)
(DC+)
1.5A max Fuse
NO P/
B
3
Optional test
input
(or
K
jumpered)
1
FF-SYA
receiver
K
3
6 4 5
K
2
K3 K1 K3 K2
(1) (1)
(DC-)
(1)
See page Wiring Diagrams section for full size schematic
K1 K2
FSD FSD K3
(DC-)
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.
54
≤ 50000 / R
cable
1A 1A 1.5A max
Dual channel
Fuse Fuse Fuse
machine control circuit
(recommended circuit)
NO P/
Phase
(DC+)
B
K1
K3
K
1
1 1 3
Neutral
(+) (DC-)
4 internal
K
fuse
3
K
FF-SYA Single channel
2
machine control circuit
emitter internal FF-SYA
(*) (*) fuse
(-)
5 receiver Phase
(DC+)
2 2 6 4 5
K1
K3 K2
K3 K1 K2
K3
(1) (1)
(1)
K3
K1 K2 Neutral
(DC-)
FSD FSD
107031-23 EN FR26 GLO 1199 Printed in France
load
Fuse Fuse
K2
K3
OR
Fuse