Honeywell SYA14 Series Manual page 660

APPLICATION EXAMPLES
FIG 9. DUAL CHANNEL CONNECTION OF AN EXTENSION MODULE FF-SRE3081 TO AN
EMERGENCY STOP MODULE FF-SRS5935 (RECOMMANDED INTERFACE)
Fuse
L1 (+)
A1
(+)
Power
K2
K3
A2
(-)
N (-)
(
A) This may be the output of one of the following safety switching devices (OSSD) :
- safety light curtains (FF-SB, FF-LS),
- safety mat (FF-SM),
- single beam (FF-SPS), modular safety light curtains (FF-SC),
- safety laser scanner (FF-SE),
- dual output safety limit or interlock switches (for example: CLS and GK).
This circuit has redundancy in the extension module circuit, because of its two channel connection to the
emergency stop module. It offers the highest possible safety level.
FUNCTIONAL DESCRIPTION:
After activation of the safety device or emergency stop push button, the two K2 and K3 LEDs of the FF-SRS5935
Emergency Stop module will turn OFF, indicating that the two internal safety relays K2 and K3 are de-energized.
The normally open safety outputs 13/14, 23/24 and 33/34 will open and the normally closed safety output will close.
Then the K1 and K2 LEDs on the FF-SRE extension modules go off indication that the two internal safety relays are
de-energized. The safety contacts 13/14.....73/74 open and 81/82 closes.
1. After removing the stop condition, press and release the RESTART push button to restart the safety control
module.
2. If the FF-SRE extension module is operating properly, the K2 and K3 LEDs illuminate, indicating that the safety
relays K2 and K3 are energized. At this time, the three normally open safety contacts will close and the normally
closed safety contact will open. The FF-SRE LEDs for K1 and K2 illuminate while the safety contacts 13/14....73/74
close and 81/82 opens. This action will allow the machine to operate.
The proper operation of the FF-SRE extension module is monitored by looping the NC contacts 81/82 in the restart
circuit.
6
Dual output of safety
switching devices
(A) (OSSD)
(A)
OSSD1
OSSD2
Emergency Stop
push-button
S S S
11 12 22 13 23 33 41
Honeywell
FF-SRS5935
S1
S2
Internal
Switches
S S S21
33 34 PE 14 24 34 42
1 No and 1 NC additional
Safety Contacts
N (-)
Restart push-
button
A1 A3 13 23 33 43
(+) (+)
Honeywell
FF-SRE3081
K1
K2
A2 A4
(-) (-) 14 24 34 44
5 NO additional Safety
Contacts
Machine
Control
N (-)
107014-10 EN FR26 GLO 0499 Printed in Germany
53 63 73 81
54 64 74 82