SF4C Safety light curtain
3.8 Muting Function
77
!
DANGER!
Only use a device that satisfies the specification for the
muting sensor mentioned above. If you use a different device
that does not meet the requirements of a muting sensor, the
muting function may operate with a different timing than
expected, which could result in serious injury or death.
Always connect a muting lamp to make the status of the
function visible. It is forbidden to activate the muting function
if no muting lamp is connected.
3.8.2 Installation of the Muting Sensor
1
1
2
3
S (m/s)
Object to be
sensed
Safety zone
Dangerous zone
Guard
Guard
Muting sensor B
Light curtain
Muting sensor A
Muting sensor D
Muting sensor C
1. The distance between muting
sensors A to C and between B to D
must be shorter than the whole
length of the object to be sensed.
2. The distance between muting
sensors A to B has to be covered by
the object to be sensed in 30ms to 3
seconds. (S = speed)
Distance between A and B: S x 3 (s)
3. The distance between muting
sensors C to D has to be covered by
the object to be sensed in less than 3
seconds.
Distance between C and D: S x 3 (s)
+V
+V
Muting
sensor A
Muting input 1
Muting input 2
Muting
sensor C
Muting
sensor B
Muting
sensor D
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