Honeywell SYA14 Series Manual page 709

FF-SRT Series
FIG 6. MODULE FRONT PANELS
ONE CHANNEL
A1 15 27
(+)
Honeywell
FF-SRT
A1/A2
16 28
APPLICATION WARNINGS
IMPROPER TIME DELAY USE
•
Always use time delay module connected to non safety related machine operation and use safety control modules as e-
stop, door, two-hand control to immediately stop dangerous motion.
•
Never use a time delay when the machine reaction time is not consistent in this case use a standstill monitor control
module FF-SR05936.
•
The FF-SRT module time delay value must be selected or adjusted to be greater than the time necessary to stop the
hazardous machine motion for both regular and emergency stop conditions (includes power removal).
CONTACT WELDING
•
Always protect all safety contacts with correctly rated fuses. These fuses must never exceed the rated FF-SRT 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-SRT 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.
Failure to comply with these instructions could result in death or serious injury.
4
A2
(-)
ISSUE 1
TWO CHANNELS
A1 15 27
(+)
A1/A2
16 28
PK 107019-01-EN FR26 GLO 398 Printed in Germany
PK 107019-01
Honeywell
FF-SRT
A2
(-)