E4BE4B
8
J BEAM AXIS, SE NSITIVITY, AND
DISTANCE ADJUSTME NTS
1. E4B-T1 and E4B-TS50 Through-beam Models
Set the SENSITIVITY adjuster of the Receiver to maximum.
Move the Emitter and Receiver vertically and horizontally until the
SENSING indicator of the Receiver is lit and secure the Emitter
and R eceiver at the midpoint of the range w ithin which the
STABILITY i ndicator is li t.
Optimum line
Range in which the STABILITY indicator (green) is lit
Range in which the SENSING indicator (red) is lit
Pass the sensing object through the sensi ng range and adjust
the sensitivity so that the SEN SING indicator turns ON and OFF
according to the presence or absence of the sensing object whil e
the STABILITY indicator i s lit continuousl y.
If the S TABILITY indicator i s not lit while the Sensor is in
operation, this may indicate a possibl e operati onal error. Check
or readjust the sensitivity.
If the E mitter and Receiver are set at a di stance shorter than the
rated sensing distance, reduce the sensitivity to within the range
in which the STABILITY indicator is lit. This will increase the
immunity of the Sensor against noise.
The parall el movement characteri stics (i.e., the mutual
interference distance) and sensing object size vary with the
sensitivity adjustment. Refer to Engineering Data and make the
optimum adjustments.
2. E4B-LS20 and E4B-LS70 Distance Setting Models
Locate the Sensor so that both the STABILITY and SENSING indicators will be lit when the object is placed at the sensing position, and
the STABILITY indicator will be lit and the SENSING indicator will turn OFF when the object is removed.
Step 1 2 3
Sensing
Sensing object
Background
Sensing object
Background
Sensing object
Background
Distance adjuster --- ---
Adj ustment
procedure
Pl ace the sensing object at the
sensing posi tion and turn the
distance adjuster clockwise
gradually until both the SEN SING
and STABILITY indicators are lit.
Rotate the sensor vertically and
horizontally and secure the sensor
at the midpoint of the range wi thin
which the STABILITY indicator i s on.
Remove the sensing object and
check that the SENS ING indi cator is
OFF and the STAB ILIT Y indicator is
continuously on.
Note: If the STABILIT Y indicator is not lit while the Sensor is in operation, this indicates a possible operational error. Check or readjust
the sensitivity.
E4B-LS20
The sensing distance is adj ustable within a range of 10 to 20 cm
with the distance adjuster.
Sensing
distance
Position of distance adjuster
5to10cm Set to the position 5-20. The distance range will
be5to23cminthiscaseduetothe
characteristics of the ultrasonic beam.
10 to 20 cm The adjuster can be set freely within a range of
10 to 20 cm. T he object can be detected within a
range of 5 to 10 cm in this case due to multiple
ultrasonic refl ection.
Setting sensing range (cm)
Sensing object
Unstable range
Separate them 30 cm min.
Background
E4B-LS20
