Honeywell SYA14 Series Manual page 56

4.7 Wiring Diagrams
The following wiring diagrams illustrate the electrical connections for the FF-SYA Series
light curtains. The customer must supply the three safety relays, K1, K2 and K3, the cycle
start push-button and the test circuit.
Note : Mechanically linked contact relays are sometimes called captive contact, anti-weld,
or guided contact relays.
IMPROPER INSTALLATION OF FF-SYA SERIES LIGHT CURTAIN
•
Use the recommended wiring diagrams to ensure external relay monitoring by the
interface.
Failure to comply with these instructions could result in death or serious injury.
IMPROPER SYSTEM PERFORMANCE
•
Ensure independent stop circuit safety relays have mechanically linked contacts (such
as GE CR120 BP Machine Tool Relay or Telemecanique CA3-KN31BD3 or CA3-
DN31BD relay) that prevent contact overlapping in the event of a welded contact.
Failure to comply with these instructions could result in death or serious injury.
IMPROPER CONNECTION OF LOADS
For safety reasons, the loads must be connected between terminals 4-6 and between 5-6.
Failure to comply with these instructions could result in death or serious injury.
IMPROPER PERIMETER PROTECTION
• Design control circuit to allow a manual restart before further machine operation can
occur.
• Locate manual restart to allow operator a clear view of danger zone.
• Operator shall NOT be able to reach manual restart from within danger zone.
• Design control circuit to prevent Programmable Logic Controller from overriding manual
restart.
Failure to comply with these instructions could result in death or serious injury.
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107031-23 EN FR26 GLO 1199 Printed in France