If a button operation is
required, release the key
lock.
"5-1 Key Lock" ( page 7)
Threshold value (SP1)
Detected value
Hysteresis width
Judgment output
●Operating point
○Return point
■Hysteresis Mode
Hysteresis
6-12
Minute level difference can be judged by controlling the hysteresis
width minutely according to the object.
However, note that when the detected value is fluctuating due to the
movement of the object or the small intensity of the reflected light, the
output may become unstable.
ABT Function (Automatic-Background-Tracking)
6-11
The ABT function is enabled only when background reference teaching
(sensitive) is executed.
This function corrects variation of the detected value when background
is detected (coincidence between distance and intensity) and keep the
detected value at 100.
The number of times of maintenance is reduced by automatically
correcting the variation of the detected value due to stain on the
sensor's receiving surface or the background object.
The correction time can be selected from four options (OFF / 0.3sec /
1sec / 3min).
(Precautions)
If the object moves very slowly, correction keeps up with the movement
of the object, so the object cannot be detected correctly.
In this case, retard the correction time of the ［ABT function］ or set OFF
the function
Hysteresis mode
Auto
User
Description
The optimum hysteresis width is automatically set according to the threshold.
User can set any hysteresis width.
■Hysteresis Width
The point at which the output turns from OFF to ON is called the operating point and
the point at which it turns from ON to OFF is called the return point.
The distance between the operating and return points is called hysteresis width.
For this sensor, threshold value is equal to operating point, so the
The definition of hysteresis width for each output mode is shown on the figure below.
●Di intensity mode [Dist + Int]
In the di intensity mode, user setup of hysteresis width is not allowed. A
fixed value of 4 is always set.
●Single Point Mode[Single]
●Window BGS mode[Window BGS]
●Window FGS mode[Window FGS]
ON
OFF
Near
Far
Output *1
Far side threshold
value (SP1)
Near side threshold
value (SP2)
Far side threshold
value (SP1)
Near side threshold
value (SP2)
Detected value
Hysteresis width
ON
OFF
Near
Far
Output *1
Hysteresis width
Hysteresis width
Hysteresis width
Detected value
ON
OFF
Near
Far
*1. This is a graph when the output logic is N.O. It is inverted in the case of N.C.
*1. This is a graph when the output logic is N.O. It is inverted in the case of N.C.
*1. This is a graph when the output logic is N.O. It is inverted in the case of N.C.
Troubleshooting
7
■Error Display
Error name /
display
Possible causes
Error details
Indicator
Laser failure error
System error
Load short-circuit error
Data (EEPROM) error
Orange Green
Quick flashing
(at 0.2s intervals)
OFF
Quick flashing
(at 0.2s intervals)
OFF
The laser diode
might have
been
deteriorated.
An error
occurred in the
system.
An error occurred
on the memory
inside the sensor.
The output line
is short-circuit-
ed.
Restart the
sensor (turn the
power off and
on again).
If the error
remains,
replace the
sensor.
Initialize the settings
by pressing and
holding the UP
button for 3s.The
sensor is out of
order if the error is
still not
fixed.Replace the
sensor.
Check the
wiring and
connecting.
■State Display
State name /
display
Action and correction
Possible causes
Insufficient intensity
Key lock
Laser emission OFF
The received light
intensity from the object
is not sufficient or the
object is out of the
detection distance range.
Retard the response time or
adjust so that the distance
between the sensor main
unit and the object can be
detected by the sensor.
The key lock function
enabled.
Pin2 terminal (white)
might have been
short-circuited
Check the wiring and
external input setting.
Orange and green
indicators show quick
flashing alternately
(at 0.2s intervals)
11
