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Chapter4 Series Connection
F3SJ-A
User’s Manual
Wiring/Installation
Series Connection
From 2 to 4 sets of F3SJ can be series-connected. Series connection allows them to be used as a a safety
light curtain, requiring only 1 set to be wired to a controller and preventing mutual interference.
If any 1 set of series-connected F3SJ is blocked, both of the safety outputs turn OFF. The indication LED for
each F3SJ turns ON separately.
• Number of connections: Up to 4 sets
• Total number of beams: Up to 400 beams
• Connection cable length between 2 F3SJ in series connection: 15m max.
Ex.: Configuring an L- or U-shaped detection zone
The terms used in this document to describe each F3SJ in a series connection are shown below.
When attaching a cable or cap, tightly fasten the screws (M2, in 4 places, recommended torque: 0.15Nm). Failure to do so may
cause the cable/cap to come loose, leading to deterioration of the protective functions.
Secondary sensor 3 (4CH)
Secondary sensor 2 (3CH)
Secondary sensor 1 (2CH)
Primary sensor (1CH)
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