Panasonic LS-400 Series Operation Manual page 10

TEACH : Teaching Mode
L/D ON : Output Operation Setting Mode
Refer to p. 22 for setting procedure
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When using differential (rising or trailing) mode
Only sudden changes in the light intensity are sensed, so that objects such as
glass edges can also be sensed with stability.
Span adjustment during differential mode
When setting differential mode in PRO mode, the maximum sensitivity (minimum
threshold value) is set.
If the response time is changed in differential
mode, the maximum sensitivity (minimum threshold
value) for that response time is set automatically.
Span adjustment for differential mode can be set
as follows in teaching mode. The threshold value
can be changed using the threshold value fine adjustment function. Refer to
'threshold value fine adjustment function (P. 6)' for details.
Short span
(Sudden change)
* Products manufactured up until June 2004 (~ Lot No.: 4F □ ) are set in 5 steps (d-01 to d-05).
Changed intensity
Turn
Turn
This mode allows the selection of output operation from either Light-ON, or Dark-ON.
When using normal mode
When set to 'L-ON', the output will be ON if the incident light intensity becomes
greater than the 'threshold value'.
When set to 'D-ON', the output will be ON if the incident light intensity becomes
less than the 'threshold value'.
Output
operation
L-ON OFF
ON
D-ON
0
Threshold value
When using window comparator mode
When set to 'L-ON', if the incident light intensity is between the two 'threshold
value' levels, the output will be ON. If the incident light intensity is outside of the
two threshold value levels, the output will be OFF.
When set to 'D-ON', if the incident light intensity is between the two 'threshold
value' levels, the output will be OFF. If the incident light intensity is outside of the
two threshold value levels, the output will be ON.
Output
operation
L-ON
OFF
ON
D-ON
0
Threshold
* The factory setting is 'L-ON (Light-ON)'.
When using hysteresis mode
For L-ON, the output turns ON when the incident light intensity is greater than the
ON level (2_SL), and the output turns OFF when the incident light intensity is less
than the OFF level (2_SL).
For D-ON, the output turns OFF
when the incident light intensity
is greater than the OFF level
(2_SL), and the output turns ON
when the incident light intensity
is less than the ON level (1_SL).
9
Incident
intensity
Threshold
(Note)
Changed intensity
Changed intensity
ON
OFF
Incident light
intensity
9,999
ON OFF
OFF ON
Incident light
intensity
9,999
Threshold
value 1 value 2
(1_SL) (2_SL)
Output
operation
L-ON OFF ON or OFF
ON OFF or ON
D-ON
0
OFF level or ON level
(1_SL)
light
d-01 d-02 d-03 d-04 d-05 d-06 d-07 d-08
value
Time
(Note) (Note)
Long span
(Gradual change)
Changed intensity
Turn
Changed intensity
Turn
ON
Incident
OFF
light
intensity
9,999
ON level or OFF level
(2_SL)