E3X-NV/NVG
E3X-NV/NVG
3
LIGHT SOURCE COLOR SELECTION
To distinguish two colors, select a light source color that creates a
large difference in the reflection rate between the two colors.
Reflection Rates
Refer to the following table to select the best light source color to dis-
tinguish colors.
Red Light Source
(E3X-NV)
Green Light Source
(E3X-NVG)
Reflection rate
Reflection rate
White
Red
Green
Black
White
Red
Green
Black
Colors to be
di ti
i h d
Light source
distinguished
Red
Green
White – Red
Yes
White – Green
Yes
Red – Green
Yes
Black – Red
Yes
Black – Green
Yes
White – Black
Yes
Yes
Operation
OUTPUT CIRCUITS
Brown
Black
Blue
Load
Operation
indicator
(orange)
Stability
indicator
(green)
Teaching indicator
(red/green)
Control
output
12 to
24 VDC
Remote
teaching input
Pink
Main
circuit
Timing Chart
Light-ON
Dark-ON
Incident
Interrupted
Operation
indicator
(orange)
ON
OFF
Output
transistor
ON
OFF
Load
(relay)
Operates
Releases
(Between brown and
black terminals)
(Between brown and
black terminals)
Operation
indicator
(orange)
Output
transistor
Load
(relay)
E3X-NV21/NVG21
Incident
Interrupted
ON
OFF
ON
OFF
Operates
Releases
WITH/WITHOUT-OBJECT TEACHING, NO-OBJECT TEACHING, MAXIMUM SENSITIVITY SETTING
Refer to the following table to select the most suitable sensitivity setting method.
Sensitivity setting method
Maximum sensitivity setting
No-object teaching
With/Without-object teaching
Typical application
Detection of the existence of
objects that interrupt light
perfectly
Detection of objects with no
background objects
If teaching is impossible by
stopping the movement of
detectable objects
To detect bright or dark objects
by teaching only with background
objects
Detection of a slight difference in
reflection
Color discrimination
Background objects with
unstable reflection
Detection of object surface
irregularities
Elimination of background object influence
Note:
If the set distance is very short (i.e., 0 to 12 mm for the E32-TC200 and 0 to 4 mm for the E32-DC200), no-object teaching is not possible
due to excessive light. In this case, perform with/without-object teaching.
