Blanking Function; Fixed Blanking Function - Panasonic SF4D-TM1 User Manual

Functions

5-4 Blanking function

5-4-1 Fixed Blanking Function

This function is used to prevent the light curtain's control output (OSSD 1 / 2) from turning OFF
when a specific beam axis is blocked.
Use this function when an obstacle always blocks a particular beam axis.
Setting methods include teaching setting, manual setting, and initialization setting.
● Teaching setting
When teaching is used, beam axes that are blocked during teaching are set as valid axes of
the fixed blanking function.
To use this method, the emitters of the light curtain must be emitting light. Setting is not pos-
sible when light is received (or blocked) in all beam axes.
● Manual setting
Set fixed blanking function valid / invalid for each beam axis.
● Initialization setting
The fixed blanking function becomes invalid. (Factory setting)
When the fixed blanking function is used, the light curtain's control output (OSSD 1 / 2) does not
turn OFF when a specific beam axis is blocked. Use a protective structure to prevent arrival at the
machine's danger zone from the sensing area of the specific beam axis.
● If light is received from the emitter to a beam axis for which the fixed blanking function is set, the
light curtain's control output (OSSD 1 / 2) becomes fixed at OFF. Check installation conditions
and turn the power OFF then ON. (The fixed blanking function will remain valid after the power
is turned OFF then ON.)
● When the fixed blanking function is used, the light curtain's digital indicator / received light
amount (green) remains OFF regardless of the intensity of light received.
78
Obstacle
Before countermeasure
Emitter
Danger zone
After countermeasure
Emitter
Protective structure
WARNING
Receiver
Beam axes on which fixed
blanking function is set
Receiver
Beam axes on which fixed
blanking function is set
CAUTION
© Panasonic Industrial Devices SUNX Co., Ltd. 2020