Honeywell SYA14 Series Manual page 729

FUNCTIONAL DESCRIPTION
In the manual start mode, the module accepts input
from the safety device (light curtain, safety mat,
safety switches, etc.)
S21/S22 after activation of the push button between
S33 and S34; then, the normally open safety
contacts (13/14, 23/24) will close and the normally
closed contact (31/32) will open.
In the automatic start mode, the module accepts
immediate input from the safety device (light curtain,
mat, safety switches, etc.) between S11/S12 and
S21/S22 (S33 and S34 are jumpered if external
relay monitoring is not needed); then, the normally
open safety contacts (13/14, 23/24) will close and
the normally closed contact (31/32) will open.
In either mode, if the safety device is actuated
(emergency stop condition occurs), the normally
open contact will open immediately and the normally
closed contact will close. This emergency stop
condition is relayed via the safety contacts of the
module to the machine control circuitry to arrest
dangerous motion and/or remove power.
EXTENSION MODULES
CONTACTORS
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-SRS5925 Emergency Stop Module. If multiple
safety contacts are used in parallel with one load,
the maximum admissible current can be increased.
For connection of the FF-SRE 3081 to the FF-SRS
5925 module, see the Installation Instructions for the
FF-SRE 3081 Extension Module.
CONTACT MULTIPLICATION VIA EXTERNAL
RELAYS
• If contact multiplication via external safety relays
(or the FF-SRE3081 Extension module) is
necessary, connect one normally closed contact
of each relay (or 81/82) in series into the restart
loop between terminals S33/S34 (Final Switching
Device (FSD) monitoring).
• Use two independent stop circuit safety relays
with mechanically linked contacts to reliably
detect a welded contact.
Failure to comply with these instructions could
result in death or serious injury.
5
between S11/S12 and
AND EXTERNAL
FIG 9. BLOCK DIAGRAM
Overvoltage and
Monitoring
short circuit
protection
FIG 10. MODULE FRONT PANEL
FIG 11. FUNCTIONAL DIAGRAM
Start push-
button
Emergency
Stop
K1
K2
* Line fault Detection on Start push-button:
If the start push button is closed before voltage is
applied to S12 and S22 the safety contacts of the
module cannot close.
This additional feature ensures the detection of a line
fault via the start push-button or a blocked start push
button. In case of a push-button failure the module
can not be restarted.
107035-02 EN FR26 ROW 0499 Printed in Germany
31
Logic
32
closed
opened
Inputs
closed
opened
Output