E3X-NH

E3X-NH

21

Positioning/No-object Teaching

• Ideal if it is impossible to perform teaching with the sensing

object stationary in the sensing area.

• Ideal for high-precision positioning.

• Ideal for teaching with only background objects for the detection

of bright or dark objects.

Reflective (Light-ON) Fiber Unit

1. Press the SET button without sensing object in the sensing

area.

Tentatively set the threshold to the value that is

±6% of the in-

cident level.

6%

Incident level without

background object

or sensing object.

6%

Large

Small

Light

Threshold

Threshold

Note:

If the incident is low at the time of teaching and the threshold

cannot be set to the position corresponding to -6% of the

incident level, the sensitivity will be set to maximum auto-

matically when the E3X-NH is in RUN mode.

2. Detecting the first object in RUN/ADJ mode.

Tuning

range

6%

18%

18%

Incident

level

indicator

Threshold

indicator

Large

Small

Light

Threshold

Sensing object

The Photoelec-

tric Sensor

works in reflec-

tive operation

because the in-

cident in-

creases.

The number of lit

indicators of the inci-

dent level indicators

depends on the inci-

dent. The threshold

is set to 7.

Through-beam (Dark-ON) Fiber Unit

1. Press the SET button without sensing object in the sensing

area.

Tentatively set the threshold to the value that is

±6% of the in-

cident level.

6%

6%

Large

Small

Light

Threshold

Threshold

Incident level without

background object

or sensing object.

Note:

If the incident is low at the time of teaching and the threshold

cannot be set to the position corresponding to -6% of the

incident level, the sensitivity will be set to maximum auto-

matically when the E3X-NH is in RUN mode.

2. Detecting the first object in RUN/ADJ mode.

6%

18%

18%

Large

Small

Light

Threshold

Incident

level

indicator

Threshold

indicator

Sensing object

The Photoelectric

Sensor works in

through-beam

operation

because the inci-

dent decreases.

The number of lit

indicators of the inci-

dent level indicators

depends on the inci-

dent. The threshold

is set to 7.

Tuning

range

Threshold vs. Indicators after Auto-tuning Setting

1. Set the initial threshold by performing positioning/no-object teaching in TEACH mode.

2. Press the SET button for three seconds minimum in ADJ mode.

Initial threshold

for auto-tuning

Tuning

range

18%

18%

Incident

level

indicator

Threshold

indicator

Large

Small

Light

Threshold

The number of lit indicators of the

incident level indicators depends

on the incident. The threshold is

set to 7.

Taking into consideration the vibration of the sensing objects on the in-line operation, sample the incident with the first five sensing ob-

jects after setting the threshold and set the threshold again to the middle value between the highest and lowest incident values obtained

with the sensing objects. The E3X-NH will then perform auto-tuning within a range of

±18% of this value.