Example Electrical Wiring Connections - Honeywell SYA14 Series Manual

Figure 4 - 4 Mode Selector and Buzzer Switch
H = Hold (Start and Restart Interlock (manual) mode)
N = Normal (Automatic Restart mode)
In the start and restart interlock (manual) mode, the connection between the restart input and an external 24 Vac/dc supply
must be set using a push button to restart the equipment (minimum closing time is 200 ms). It takes 500 ms for the system
to restart after activation of the push button.
In this mode, the FF-LS safety light curtain will detect a restart push button failure (broken in a closed position) and will
prevent the next cycle of operation until the failure has been corrected.
4.8

Example Electrical Wiring Connections

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 - 5 Start And Restart Interlock (Manual) Mode With Final Switching Device (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.
31
(1)
X1 X2
X1 X1
-
F1 F2
X2
(1)
Start P/B
FF-LS
H
Control Unit
N
Internal Restart
X2
Mode Selector
Sensor A Sensor B
107022-14 EN FR26 GLO 0100 Printed in Germany
FUSE
K1 K2
+
Hold
Machine
Reset
-
Control Circuit
FUSE