Honeywell SYA14 Series Manual page 642

ELECTRICAL INSTALLATION
ELECTRICAL SHOCK
Remove power from FF-SR Series control modules and
machine during installation.
Failure to comply with these instructions could result
in death or serious injury.
Multiple wiring configurations are possible for the
FF-SR25980 single channel two-hand safety module.
General guidelines are provided because there are
various ways to interface the module to machine control
circuitry. Refer to the important warnings (page 5) and
the application examples (page 6).
FUNCTIONAL DESCRIPTION
The module operates in an automatic restart mode and
accepts immediate input from the safety devices (safety
hand switches)
If the module receives input (between S13/S14 and
S23/24) from two safety hand switches that are
monitoring hand presence, and this occurs in less than
half a second (assuming the external monitoring loop
circuitry (Y1/Y2) is closed), the two normally open safety
contacts (13/14 and 23/24) will close. If these input
contacts fail to close within half a second, or if power has
been removed, another activation is required.
When one of the input contacts opens, the two normally
open safety contacts of the FF-SR25980 module will open
immediately.
One or more FF-SRE3081 Extension Modules or external
contactors with positively driven contacts can be used to
multiply the number of contacts of the FF-SR25980 Two-
hand safety Module. If multiple safety contacts are used in
parallel with one load, the maximum admissible current
can be increased.
4
FIG 6. FUNCTIONAL DIAGRAM
FIG 7. BLOCK DIAGRAM
FIG 8. MODULE FRONT PANEL
A1
(+) 13 23
13 23
K1
K2
14 24
14 24
107011-10 EN FR26 GLO 0499 Printed in Germany
S S
Y1 Y2
13 14
Honeywell
FF-SR25980
S S A2
23 24 (-)