F3SNA0982P25 Omron, F3SNA0982P25 Datasheet - Page 16

• Manufacturer Part Number: F3SNA0982P25
• Manufacturer: Omron

Specifications of F3SNA0982P25

• Lead Free Status / RoHS Status: Supplier Unconfirmed

Output waveform of the OSSD outputs
The OSSD outputs will be OFF as shown in the following figure in
order to perform the OSSD circuit self-test when the light curtain is in
the ON-state.
The OSSD circuit diagnosis is correct when this OFF signal is fed
back. If the output signal does not contain an OFF signal, the receiver
determines that there is an output circuit or wiring failure and goes into
the lockout condition.
The number of OFF signals depends on the number of light curtains
OSSD1, 2
Note: This chart indicates the instance of 2 light curtains series connection.
No
2 light curtains
3 light curtains
No. of light curtains
connected in series
OFF
ON
Approx. 25 µs
OFF signal
160 to 200 µs
Response time
1
2
3
No. of OFF signals within the
response time
connected in series. (See the chart at left.)
In the same way, the OSSD outputs will be ON as shown in the
following figure, to perform the OSSD circuit self-test when the light
curtain is in the OFF-state. (See the chart below.)
Check the input response time of a machine connected to the
F3SN-A carefully to ensure the machine will not malfunction due to
the OFF signal.
OSSD1, 2
No
2 light curtains
3 light curtains
No. of light curtains
connected in series
OFF
ON
OFF signal
F3SN-A/F3SN-B/F3SH-A
Approx. 130 µs
Response time
1
2
3
No. of ON signals within the
response time
16