Autonics SFL Series, User Manual

Page: 55 / 121

5. Safety-related function
55
© Copyright Reserved Autonics Co., Ltd.
i. -|Transparent setting guide|-
5.4.1.2 When using four muting sensors in standard mode (one direction of the detection object)
(1) Wiring
NPN output PNP output
S2 S4
S1 S3
Emitter
(Brown)+24VDC
(Pink)Mute 2 input
(Orange)Mute 1 input
(Blue)0V
Emitter
S2 S4
S1 S3
(Brown)+24VDC
(Pink)Mute 2 input
(Orange)Mute 1 input
(Blue)0V
※
Muting sensors (S1, S2, S3, S4) have the same output type (NPN, PNP) and 3-wire transistor output.
Use sensors that output is ON when detecting an object, and operate in Dark ON mode.
※
In case of SFL (standard type), use the muting sensors with N.O. contact.
In case of SFLA (advanced type), use atLightCurtain to set N.O. or N.C. contact based on the output type of
muting sensor.
(2) Example of muting function
While a workpiece is passing through the detection zone from the safety zone to the hazardous zone,
one-direction muting begins by signals from four muting sensors installed in parallel.
•
Installation example
Muting sensors (S1, S2, S3, S4): Through-beam photoelectric sensor
(Output is ON when sensing the object, Dark ON mode)
Muting sequence: Mute input 1 → 2
※
Connect the outputs of muting sensors (S1, S3) to mute 1 input.
※
Connect the outputs of muting sensors (S2, S4) to mute 2 input.
Item Unit Description
L m Length of the object
V m/s Velocity of the object
D1 m
The distance at the muting sensors labeled S1/S2 firstly detect an object.
(When the detection object moves to the right.)
D2 m Distance between the muting sensors labeled S2/S4
D3 m Distance between the muting sensors labeled S1/S3
T1min sec Min value of mute Input time limit (T1)
T1max sec Max value of mute Input time limit (T1)
※
Be sure to install the muting sensors for the values of D2 and D3 shorter than the L. (D2 < L, D3 < L)
※
Muting begins when mute 2 input is applied after mute 1 input is applied within the mute input time limit (T1).
(T1min < (D/V) < T1max)