Honeywell SYA14 Series Manual page 643

APPLICATION WARNINGS
IMPROPER INPUT CONNECTIONS
• To ensure the proper operation of the FF-SR25980, always connect each two-hand safety switch output to the input
channels of the two-hand safety module.
IMPROPER HAND SWITCHES USE
• Always use safety hand switches designed for a two hand control solution.
•
Strictly follow the manufacturer's installation manual for the proper use and location of these safety hand switches.
CONTACT WELDING
• Always protect all safety contacts with correctly rated fuses. These fuses must never exceed the rated FF-SR25980
safety output capability to prevent contact welding.
IMPROPER EXTERNAL SAFETY RELAY MONITORING
• When using additional safety relays, always connect one normally closed contact of each relay in series inside the
Final Switching Device (FSD) monitoring loop circuit (Y1/Y2). This connection will ensure correct operation of the
external relays after each FF-SR25980 activation.
IMPROPER ARC SUPPRESSOR INSTALLATION
• Never install an arc suppressor across the safety output contact of the safety control module.
•
Always install arc suppressors across the coils of external safety relays.
IMPROPER SYSTEM SAFETY LEVEL
• Always connect a single control board (consisting of two hand control switches) to the FF-SR25980 module to ensure
the proper level of safety.
• The two hand control solution only protects a single operator per control board. If additional personnel protection is
required, use additional control boards, door(s) and/or electrosensitive protective equipment.
• Always use additional guarding protection when necessary (some applications require more protection) to prevent
access to hazardous machine motion.
Failure to comply with these instructions could result in death or serious injury.
107011-10 EN FR26 GLO 0499 Printed in Germany 5