Safety Light Curtain
Safety Light Curtain
Safety Light Curtain
Safety Light Curtain
F
F
F
F
F
F
F
F
3333
3333
S
S
S
S
S
S
S
S
N
N
N
N
N
N
N
N
ssss
ssss
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eeee
rrrr
rrrr
iiii
iiii
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No. ST2-015031A -5-
1.2.2. Start interlock
This function keeps OSSD outputs in the OFF-state, which means interlock condition, after
power ON. Resetting during no interruption in the detection zone can release the interlock
condition.
[Direction for use]
Activation of the interlock function needs the wiring of “Manual reset mode” for the interlock
selection input line and the reset input line (Refer to 1.2.1).
It is possible to release the interlock by applying 24 V (for PNP type) or 0V (for NPN type) to
the reset input and by making the line open subsequently.
[Application]
When you supply a machine with power at the start of work and you want to keep stopping it
until the daily inspection is completed, this function is available.
Timing chart of the start interlock (PNP type)
Power
Light/Dark
OSSD outputs
Reset inputs
Interlock
indicator
- Restart interlock is assumed invalid.
- t
OFF
: ON
Æ
OFF response time of the OSSD outputs
Dark
Light
Dark
Light
ON
OFF
t
OFF
x 4 or longer
ON
ON
24 V
