Omron E3M-V Manual page 6

E3M-V
Adjustments
Adjustment Steps
Auto-teaching
1. Check that the mode selector is set to either RUN or ADJUST.
2. Input a 0.9-s pulse signal into the remote control I/O terminal. (See note.)
3. Auto-teaching starts when the mark is moved. When the mark passes six times, auto-teaching completes.
If teaching is successful, answer-back output from the remote control I/O terminal will turn ON for 0.3 s.
If teaching is unsuccessful, no answer-back signal will be output. Readjust using two-point teaching.
(Teaching will be unsuccessful if there is no difference in incident between the mark and base.)
4. If the answer-back signal is ON, the whole teaching operation will be completed. The output will be turned ON whenever the mark (i.e., the
color with shorter passing time) is detected.
Note: Make sure that the input tolerance of each pulse is within 0.1 s.
Auto-teaching
Remote control input/
Auto-teaching
Answer-back output
Incident
Example of Connection to Programmable Controller
Sensor
Remote control I/O
Note: Be sure to connect the E3M-V to the Programmable Con-
troller as shown above.
Precautions when Using Automatic Teaching
Incorrect discrimination may be caused by automatic teaching in the
following cases. Use one-point or two-point teaching in such cases.
Color patterns exist in the base.
Sensing objects change their positions.
Sensing objects have protrusions or surface level differences.
6
Teaching starts
Dummy sampling (1st mark)
Programmable Controller
I/O Unit
Output
Input
Teaching completes and detection starts
Sampling (5th mark)
Threshold Level Adjustments
It is possible to make fine adjustments of the threshold level after
teaching. Such fine adjustments can be made remotely as well. Re-
fer to Remote Control Function .
1 Set the mode selector to ADJUST.
2 Select the upper or lower threshold setting with the thresh-
old selector. Whenever the SET button is pressed, the
threshold level will move. Two indicators will be lit together
when the threshold level is an even level.
Press
Threshold
indicators
Threshold
level
3 After setting the level, set the mode selector to RUN.
E3M-V
Answer-back
Time
Mark (shorter passing time):
Output ON
Optimal threshold level set
Base: Output OFF
Time
The threshold level increases.
Upper
threshold
limit
The threshold level decreases.
Lower
threshold
limit