E3S-C
L
A-111
E3S-CL
Distance setting photoelectric sensor in metal housing
E3S-CL
• High water, oil and detergent resis-
tance
• Minimal black/white error for highest
reliability detecting different colored
objects (E3S-CL1)
Features
Eliminates Background Influences with a
Hysteresis of Only 2% max. (E3S-CL1)
The hysteresis is the industry's minimum 2% max. (E3S-CL1).
As a triangulation measuring is used, objects behind the set-
ting distance cannot be detected. The sensor is insensitive to
the influence of background objects of high reflectivity, and
stable detects works on a conveyor from above. The hystere-
sis of the E3S-CL2 is 10% max. of the detecting distance (5%
max. for white paper).
What Is Distance Setting?
(Differences from other detecting system)
Distance-setting
Diffuse-reflective
Fea-
tures
When the sensing object moves in direction A, the center position
of the reflected light moves in direction B. This is received by the
2-split photodiode and the place where the incident levels are the
same on the N and F sides is defined as the setting distance.
The object is detected by the incident circuit processing only when
N F, and is not detected when N F. Therefore, detection is stable
without being influenced by the work type and background ob-
jects.
Struc-
ture
Fea-
tures
Since the level of the reflected light is judged for detection , the
sensing distance varies with the color, material and/or size of the
work.
A malfunction may occur if there is any object of high reflectivity in
the background.
Struc-
ture
N
F
A setting
distance
variable
Light source
LED
Received element
(Two division photodiode)
Setting range
A
B
Detecting range
N: Near
F: Far
Detecting range
Received
element
Light source
LED
Detecting area
F502-EN2-04.book Seite 111 Dienstag, 26. Juli 2005 5:48 17
