Teaches only the status condition in which no sensing object is within sensing range (status in
which incident light intensity is stable). This method is used to set a threshold value for
conducting sensing in the presence of a background, or when extremely small objects are to be
detected.
Limit Teaching
1 Press the [MODE key] once to select ‘TEACH mode’.
3 Press the [Jog switch] when in the status condition of -
sensing object is absent.
2 FX-305(P): Turn the [Jog switch] to select the desired
‘output’ for setting.
5 Turn the [Jog switch] in the ‘’ or ‘’ direction.
When using thru-beam fiber
When using reflective fiber
6 The sensing stability status will be displayed.
•
When stable sensing can be performed
nThe digital display will blink the word ‘ ’.
•
When stable sensing cannot be performed
nThe digital display will blink the word ‘ ’.
7 The ‘threshold value’ setting will be displayed.
•
If the switch is turned toward the ‘’ direction, the digital display will scroll
from the left to the right (twice) and the threshold value will be shifted down by
approximately 15 %, to a value lower than the incident light intensity reading.
•
If the switch is turned toward the ‘’ direction, the digital display will scroll
from the right to the left (twice) and the threshold value will be shifted up by
approximately 15 %, to a value higher than the incident light intensity reading.
*
The initial factory-set value of the shift amount is approximately 15 %.
The shift amount can be changed by utilizing the ‘5-7. Shift Function’ from ‘PRO1 Mode’,
described on p.33. (The percentage adjustment is variable from 0 % to 80 %, in increments of 5 %.)
4The digital display will blink and indicate the incident light
intensity reading, then the MODE indicator / TEACH
(yellow) will blink.
Press the
MODE key once.
Status condition - sensing object is absent
Press the MODE key
5 times or keep it pressed
for 2 sec. or more.
Turn the Jog switch
in the ‘’ or ‘’ direction.
The digital display will
scroll (twice).
Press the
Jog switch.
Stable sensing
Turn the Jog switch to select
the desired output for setting.
Press the
Jog switch.
Output 1 Output 2
Place a fiber within sensing range.
Minute
object
In case of FX-301(P)(-HS)
In case of FX-305(P)
Background
Thru-beam type Reflective type
Stable sensing cannot be performed.
9Press the [MODE key] 5 times or keep it pressed for 2 sec.
or more, the amplifier will return to ‘RUN mode’ (normal
sensing operation).
8The incident light intensity will again be displayed, indicating
that configuration is now complete.
FX-305(P): The output that has been set will be displayed.
11
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