Panasonic SF4B-F31G(V2) Instruction Manual page 68

<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.)
S: The moving speed (m/sec.) of the sensing object
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.)
S: The moving speed (m/sec.) of the sensing object.
<For PNP output>
Muting
sensor A
+V
Muting input A
<For NPN output>
Muting
sensor A
0V
Muting input A
68
Operation at ON state Operation at OFF state
Be sure to use a muting sensor that satisfies the <Output operation of muting
sensors> above. If the other muting sensor not satisfying the specification above,
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
Output 0V or +V
Muting sensor D
3
Dangerous zone
Muting
sensor B
+V
Muting input B
Muting
sensor B
0V
Muting input B
© Panasonic Industrial Devices SUNX Co., Ltd. 2017
Open
Muting
sensor D
Muting
sensor D
0V