Interference Prevention Function - Panasonic SF2B Series Instruction Manual

<When bottom cap cable SF2B-CB05-A (optional) is used>
Make sure to use the auxiliary output when using the bottom cap cable
SF2B-CB05-A (optional). Set the device so the control machine can be stopped
when either the control output (OSSD 1) or auxiliary output turns to OFF. If the
auxiliary output is should not be used, the device can not stop operation when an
unexpected error occurs during control output (OSSD 1) failure, which may result
in death or serious injury.
The auxiliary output is incorporated in the emitter. It outputs ON at the normal operation of de-
vice. It outputs OFF in the following cases:
● When an error which needs emission halt status occurs
[for example, the control output (OSSD 1) short-circuit and an error occurs.]
● While test input has been input
The error cannot be transmitted to the control machine. The alarm signal is output from the aux-
iliary output.
<Timing chart>
ON
Control output
(OSSD 1 / 2)
OFF
ON
Auxiliary output
OFF
<When bottom cap cable SF2B-CB05-B (optional) is used>
The auxiliary output cannot be utilized by using the bottom cap cable SF2B-CB05-B (optional).

3-4 Interference Prevention Function

It is possible to construct the system to prevent malfunction due to
interference of the light between SF2B series devices.
The interference prevention system can construct max. three sets
for series connections (the max. number of the beam channels of
SF2B-H□ is 128 and that of SF2B-A□ is 64, however, when two
sets of SF2B-A□ are constructed, the max. is 96) and max. two
sets for parallel connections.
For constructing the series connections, the sub sensor exclusive
for series connections (SF2B-□SL) and the cable for series connec-
tions (SF2B-CSL□) are required separately.
For constructing parallel connections, use the bottom cap cable
SF2B-CB05-B (optional).
Refer to "2-5 Wiring" for details of the connecting method.
● Make sure that the frequency selector at the insertion slot
of bottom cap cable on this device is set at the "1" position
for master side sensor, "2" for slave side sensor (on both
emitter and receiver). If they are in the position other than
the above, the device may not operate properly.
● If the master side sensor breaks due to any reason, the
slave side sensor goes into an operation halt state. In order
to check the operation of the slave side sensor, set the fre-
quency selector to "1". If only the slave side sensor breaks,
the master side sensor operates correctly.
© Panasonic Industrial Devices SUNX Co., Ltd. 2016
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Control output (OSSD 1) short-circuit
Light
blocked
Frequency selector
59