Omron F3SJ Series, Original Instructions Manual

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F3SJ-A
User’s Manual
Chapter
2
Ba
si
c Sys
te
m
System Configuration and Functions
E

External Test Function
This function forcibly stops the emission using an external signal. It can be used to verify that a safety
system should properly stop when F3SJ is interrupted.
To stop the emission, apply 0 to 1.5V to the emitter's test input line. The voltage must be applied for a
period 4 times that of Toff or longer.
Ton: Response time of safety output's OFF to ON, Toff: Response time of safety output's ON to OFF
Response time p.17
 Operation of the F3SJ's Indicators When External Test Function is Performed
Blanking/test indicator blinks when voltage is applied to the test input.

Self-Test Function
The F3SJ performs the self-test when power is turned ON (within 2 second, or 2.2 seconds in case of
series connection) to check for errors. Also, it regularly performs the self-test (within the response
time) while operating.
If an error is found in the self-test, the F3SJ enters lockout state, keeps the safety outputs in the OFF
state, and indicates the error at the same time.
 Self-Test Details
The self-test detects the types of errors described below.
Emitter
•Failure of emitter element or circuit
•CPU failure
•Broken or short-circuited cable
Receiver
•Abnormal external power supply voltage
•Failure of internal power supply circuit
•Failure of receiver element or detection circuit
•CPU failure
•Memory failure
Test input
Safety output
OFF
ON
ON
OFF
Toff x 4 or less Ton x 2 or less
Subsequently performs periodic test
Power supply
ON
OFF
Self-test
ON
OFF
Within 2 s
(Within 2.2 s)