Chapter 3 Functions; Self-Diagnosis Function; Test Input (Emission Halt Function) - Panasonic SF2B Series Instruction Manual

Chapter 3 Functions

3-1 Self-diagnosis Function

This device incorporates the self-diagnosis function.
In case an error is detected during self-diagnosis, the device is put in the lockout state at that
instant, and the control output (OSSD 1 / 2) is fixed at the OFF state. Refer to "Chapter 5 Trou-
bleshooting" and remove the cause of the error.
● In order to maintain safe condition of device, inspect the light blocked status of
the device once a day or more.
● Failure to do so could delay the detection of unexpected error and increase the
degree of hazard, which may cause the malfunction of device, resulting in death
or serious injury.
● In order to check all errors in the OSSD 1, OSSD 2 and auxiliary output, the
light blocked status of device must be checked. Perform either of two below to
inspect the device under light blocked condition.

3-2 Test Input (Emission Halt Function)

This function stops the emission process of the emitter.
With the emission halt input line state, it enables to select either emission or emission halt.
Wiring synchronization
using 8-core cable
Beam synchronization
using 4-core cable
<Timing chart>
Test input
Open
Wiring synchronization
Short
using 8-core cable
circuit
Test input
Open
Beam synchronization
Short
using 4-core cable
circuit
Emission
Emission status
Emission
halt
Control output
(OSSD 1 / 2)
Do not use the test input (emission halt function) for the purpose of stopping the
device on which the SF2B series is mounted. Failure to do so could result in
death or serious injury.
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• Emission halt by test input (Emission halt function)
• Light blocking by test rod (Excluding the cable SF2B-CB05-A)
Test input
Open
0V and +V connected
Open
0V and +V connected
20ms or more
20ms or more
ON
OFF
Emission status
Emission halt
Emission
Emission
Emission halt
15ms or less
20ms or more
20ms or more
40 to 60ms
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