Functions
SF4C Safety light curtain
62
3.3 Test Input Function
!
Danger!
Do not use the test input function for the purpose of stopping
the machine in which the SF4C series is installed. Failure to do
so could result in death or serious injury.
This function enables to check the device operation by forcibly turning ON/OFF the control
output (OSSD 1/2) of the receiver in the state "beam received".
The ON/OFF switching of the output is available by opening or short circuiting the test
input/reset input wire (pink).
Interlock function
Test input/Reset input wire (pink)
Test input
Output status
Open Inactive
ON
Manual reset
PNP output: Connect to +V
NPN output: Connect to 0V
Active OFF
Open
Active OFF
Auto reset
PNP output: Connect to +V
NPN output: Connect to 0V
Inactive ON
When the test input is activated, the control output (OSSD1/2) becomes OFF. 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.
•
In case of PNP output: Normal operation is restored when the test input/reset input wire
(pink) is connected to +V (for manual reset: open).
•
In case of NPN output: Normal operation is restored when the test input/reset input wire
(pink) is connected to 0V (for manual reset: open).
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