Autonics SFL Series, User Manual

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5. Safety-related function
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i. -|Transparent setting guide|-
5.4.1.3 When using four muting sensors in standard mode (both directions of the detection object)
(1) Wiring
NPN output PNP output
S2 S3
S1 S4
Emitter
(Brown)+24VDC
(Pink)Mute 2 input
(Orange)Mute 1 input
(Blue)0V
Emitter
S2 S3
S1 S4
(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,
both-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, S4) to mute 1 input.
※
Connect the outputs of muting sensors (S2, S3) 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
The distance at the muting sensors labeled S3/S4 firstly detect
an object.
(When the detection object moves to the left.)
D3 m Distance between the muting sensors labeled S1/S4.
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 value of D3 shorter than the 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 < (D1/V) < T1max or T1min < (D2/V) T1max)