12
E3MCE3MC
■ Detection Level and Indicator
■ Technical Guide
Detection of Metal or Glossy Objects
If the E3MC does not detect metal or glossy objects accurately,
change the mounting angle of the E3MC so that it will not receive
regular reflection light directly reflected from the objects.
The mounting angle of the E3MC-(M)X@@ can be adjusted to
approximately 10° with the mounting holes.
On the other hand, sensing objects such as metal or transparent
plastic cases may be detected by allowing regular reflection.
Detection of White, Gray, or Black Objects
When registering white, gray, or black objects, change the color
discrimination mode to “Mode I” to achieve a more stable color
discrimination.
External Light
The E3MC may malfunction if it directly receives external light
interference. Provide a cover to shut-out such external light inter-
ference.
Adjustment of Sensing Distance of General-purpose Optical
Fiber Type
Unlike the E3MC-A or E3MC-X, the E3MC-Y may require adjust-
ment of its sensing distance depending on the reflection rate. This
also applies to the thru-beam type.
■
Registered Color Selection
(Bank Selection Input)
1-output Models Only
The E3MC in RUN mode allows bank selection with external bank
selection input by combining the bank selection input 1 (yellow)
and input 2 (green). The selected bank is indicated with the bank
selection indicator.
NPN (E3MC-A11/-X11/-Y11)
PNP (E3MC-A41/-X41/-Y41)
Indicator
Detection
level
12345678
Sensing object
Sensing object
E3MC-(M)X@@
E3MC-(M)A@@
Sensin
object
E3MC-(M)Y@@
(reflective optical fiber
5 to 20°
5 to 10°
5 to 15°
Bank Input 1 Input 2
1 OPEN OPEN
2 GND OPEN
3 OPEN GND
4GNDGND
Bank Input 1 Input 2
1 OPEN OPEN
2 Vcc OPEN
3 OPEN Vcc
4VccVcc
Bring the fiber head as close as
possible to the workpiece and
conduct teaching.
NG: All Threshold
Indicators (red)
flashing.
OK: All Detection Level
Indicators (green) lit.
Feed workpieces and
check if they are detected.
Excessive light. Move the
head away from the work-
piece and find a position
where teaching is accepted.
The distance slightly away
from this position is the opti-
mum distance.
Move the head away by ap-
proximately 20% of the sens-
ing distance.
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