Panasonic SF4B V2 Series Instruction Manual page 73

<Output operation of muting sensors>
NO (Normally Open) type
ON with light non-received status
(photoelectric sensor, etc.)
ON with object approaching status
(inductive proximity sensor, etc.)
ON with object contacted status
(position switch, etc.)
<Installation condition example of muting sensors>
Muting sensor B
Muting sensor A
Guard
Sensing object
Guard
1) Shorten the distances between muting sensors A to C and between B to D than the whole length of the sensing object.
2) The time of the sensing object to be passed through the muting sensors A to B shall be 0.03 to under 3 sec.
Distance between A and B (m) < S (m/sec.) × 3 (sec.)
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3) The time of the sensing object to be passed through the muting sensors C to D shall be under 3 sec.
Distance between C and D (m) < S (m/sec.) × 3 (sec.)
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<For PNP output>
Muting
sensor A
+V
Muting input A
<For NPN output>
Muting
sensor A
0V
Muting input A
© Panasonic Industriar Devices SUNX Co., Ltd. 2012 ME-SF4BV2-05
Operation at ON state Operation at OFF state
Output 0V or +V
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the muting function might become valid with the timing that the machine designer
cannot expect and could result in death or serious injury.
Light curtain Muting sensor C
S (m/sec)
1
1
2
Safety zone
Muting
sensor C
Muting
sensor C
0V
Muting sensor D
3
Dangerous zone
Muting
sensor B
+V
Muting input B
Muting
sensor B
0V
Muting input B
Open
Muting
sensor D
Muting
sensor D
0V
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