Honeywell SYA14 Series Manual page 194

IMPROPER SYSTEM PERFORMANCE
Ensure independent stop circuit safety relays (K1 and K2) have mechanically linked contacts that prevent contact
overlapping in the event of a welded contact.
Failure to comply with these instructions could result in death or serious injury.
Figure 4 - 6 Automatic Restart Mode With FSD (External Safety Relays) Monitoring
Power supply
(+)
18-25 Vac
22-30 Vdc
FUSE
K1
K1
K2 K2
+
TEST
-
(-)
(1) RC components for AC interfaces or varistors for DC interfaces.
107022-14 EN FR26 GLO 0100 Printed in Germany
(1)
FF-LS
Control Unit
X1 X2
X1 X1 X2
F1 F2
X2
Sensor A Sensor B
(1)
H
+
N
Hold
Internal Restart
Mode Selector
Reset
-
FUSE
FUSE
K1 K2
Machine
Control Circuit
32