Panasonic SF4D-A18 Instruction Manual page 108

Functions
<Start conditions for muting>
The muting state activates when the following conditions are all satisfied.
● The device is not in the lockout state.
● The device is in the light receiving state and the control output (OSSD 1 / 2) is ON.
● The time difference when muting inputs A and B change to ON is from 0.03 to under 3 sec.
<Release conditions for muting>
The muting state deactivates when any one of the following conditions is satisfied.
● The device enters the lockout state.
● Muting input A or B turned OFF for at least 20ms.
● The muting time exceeded two hours.
<Example of muting sensor installation conditions>
Muting sensor B
Muting sensor A
Guard
Sensing object
Guard
<PNP output type>
Muting sensor A
+V
Muting input A
<NPN output type>
Muting sensor A
0V
Muting input A
108
Light curtain
S (m/sec)
(1)
(1)
(2) (3)
Safe zone
Muting sensor C
Muting sensor C
0V
Muting sensor C
Muting sensor D
(1) The distance between muting sensors A and
C, and B and D, must be shorter than the total
length of the sensing object.
(2) The time required for the sensing object to pass
from muting sensor A to muting sensor B must be
0.03 sec to under 3 sec.
Distance between muting sensors A and B (m) <
S (m/sec.) x 3 (sec.)
S: Velocity (m/sec.) of sensing object
(3) The time required for the sensing object to pass
from muting sensor C to muting sensor D must
be under 3 sec.
Distance between muting sensors C and D (m) <
S (m/sec.) x 3 (sec.)
S: Velocity (m/sec.) of sensing object
Danger zone
Muting sensor B Muting sensor D
+V
Muting input B
Muting sensor B
0V
Muting input B
© Panasonic Industrial Devices SUNX Co., Ltd. 2020
Muting sensor D
0V