Emission Halt Function; Interference Prevention Function - Panasonic SF4B-F31G(V2) Instruction Manual

3-3 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.
Setting status of
interlock function
Manual reset
Auto reset
During emission halt, the control output (OSSD 1 / 2) becomes OFF state.
By using this function, malfunction due to extraneous noise or abnormality in the control output
(OSSD 1 / 2) and the auxiliary output can be determined even from the equipment side.
Normal operation is restored when the emission halt input / reset input is connected to 0V or +V
(for manual reset: open).
Emission halt
Open
input / Reset
input
Short circuit
Emission
Emission status
Emission
(Note 1)
halt
ON
Control output
(OSSD 1 / 2)
OFF
Note: This timing chart shows the operation in auto-reset mode. In manual reset mode, the device performs emis-
sion under open status and performs emission halt under short-circuit status.

3-4 Interference Prevention Function

It is possible to construct the system to prevent malfunction due to
interference of the light between SF4B-□G<V2> devices.
The interference prevention system can construct max. three sets
of series and parallel mixed connection.
The max. number of the beam channels in series and parallel
mixed connection is 192.
Refer to "2-5 Wiring" for details of the connecting method.
64
Emission halt input / Reset input
Open
When selecting PNP output: connect to +V
When selecting NPN output: connect to 0V
Open
When selecting PNP output: connect to +V
When selecting NPN output: connect to 0V
Do not use the emission halt function for the purpose of stopping the machine in
which the SF4B-□G<V2> is installed. Failure to do so could result in death or seri-
ous injury.
Emission
halt input
Invalid
Valid
Valid
Invalid
20ms or less
14ms or less
© Panasonic Industrial Devices SUNX Co., Ltd. 2017
Control output (OSSD 1 / 2) status
ON
OFF
OFF
ON
20ms or less
90ms or less