Honeywell SYA14 Series, Manual

Page: 191 / 737

29 107022-14 EN FR26 GLO 0100 Printed in Germany
IMPROPER ARC SUPPRESSORS INSTALLATION
•
Never install an arc suppressor across the safety output contact of the control unit.
•
Always install arc suppressors across the coils of external safety relays.
Failure to comply with these instructions could result in death or serious injury.
Internal safety relay contacts X1 and X2 are switched simultaneously. An internal permanent check ensures that both
safety relays have the same status. If one of the two contacts X1 or X2 becomes accidentally welded, the remaining contact
would no longer be able to close. It is therefore important to use the two signals to prevent operation of the machine.
In this case, use the contacts 1.1 / 1.2 and 2.1 / 2.2 separately:
Figure 4-2 Machine Connection with Double Stopping Circuitry
* RC component (See figure 4-6, page 33 for correct
interfacing of K1 and K2. The partial example shown here is
more appropriate for AC power.)
Figure 4- 3 Multiple Safety Light Curtain Connection
Four external safety relays K1, K2, K3 and K4 are used in the following manner:
* RC component (See figure 4-6, page 33 for correct
interfacing of K1, K2, K3 and K4. The partial example
shown here is more appropriate for AC power.)
Standard values for RC components:
Supply voltage
Resistor Capacitor
115/230 Vac 220
Ω
0.22
µ
F
24/48 Vac 100
Ω
2.2
µ
F
Safety output contacts are protected by 4 A / 250 V fuses.
4.5 Connecting Indicator Lamps To Auxiliary Terminals
POWER APPLIED TO MACHINE CONTROL SYSTEM
Before intervention, turn off and disconnect power from FF-LS Series safety light curtain and machine.
Failure to comply with these instructions could result in death or serious injury.
X1
X2
Fuse
Fuse Fuse
2
1