Series And Parallel Mixed Connection - Panasonic SF2B Series Instruction Manual

2-5-6 Series and parallel mixed connection

This is the configuration for connecting multiple sets of emitter and receiver facing each other in
mixed series and parallel combination. It is used when there are two or more dangerous parts
that can be entered from two or more directions. Up to three sets of the devices for the series
connection and up to two sets of the devices for the parallel connection can be connected in
combination.
In case of series connection, if any of the sets is in light blocked status, the control output (OSSD
1 / 2) turns OFF.
In case of parallel connection, for the control output (OSSD 1 / 2), only the set of which light is
blocked turns OFF.
For series connection side, the sub sensor exclusive for series connection (SF2B-□SL) and the
cable for series connection (SF2B-CSL□) are required separately.
Connect the interference prevention lines using the bottom cap cable SF2B-CB05-B (4-core)
(optional) on the parallel connection side.
● 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.
● Connect the emitter of the main sensor (this device) and the emitter of the sub
sensor exclusive for series connection (SF2B-□SL), the receiver of the main sen-
sor (this device) and the receiver of the sub sensor exclusive for series connec-
tion (SF2B-□SL) respectively using the cable for series connection (SF2B-CSL□).
Wrong connection could generate the non-sensing area, resulting in death or
serious injury.
● For parallel connection, connect the one receiver to the other connection using
the interference prevention line as shown in the next page. Wrong connection
could generate the non-sensing area, resulting in death or serious injury.
● As the connector for series con-
nection is not incorporated in the
main sensor such as SF2B-H8□ or
SF2B-A4□, it cannot be connected
in series.
● The connector for series connec-
tion is not incorporated in the sub
sensors exclusive for series con-
nection such as SF2B-H8SL or
SF2B-A4SL.
In case of connecting three sets of
sensors in series, it cannot be used
in the middle position.
© Panasonic Industrial Devices SUNX Co., Ltd. 2016
Ramco Innovations | www.ramcoi.com | 800-328-6236 | nsales@ramcoi.com
Emitter Receiver
Sub sensor
Main sensor
(this device)
Frequency selector
Can be used for
SF2B-H8SL
SF2B-A4SL
Cannot be used for
SF2B-H8SL
SF2B-A4SL
Cannot be used for
SF2B-H8□
SF2B-A4□
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