E3X-NH Datasheet, PDF (37/40 Pages) Omron Electronics LLC – Fine Tuning Fiber Photoelectric Sensor

E3X-NH
Turning the Power ON
After the E3X-NH/NHB is turned ON, the E3X-NH/NHB will be ready
to operate in 100 ms maximum. If power is supplied to the E3X-NH
and the load is connected to the E3X-NH/NHB independently, be
sure to turn ON the power supply connected to the E3X-NH/NHB
first.
When the power is turned ON, the operation indicator will be ON
momentarily. Note that this will not have an effect on performance
since no control output will be generated.
Mutual Interference Protection Function
Perform two-point teaching if two to three Fiber Units are closely
mounted together, at which time supply power only to the Unit in
teaching operation in turn or block the emitters of the Fiber Units not
in teaching operation.
EEPROM Writing Error
Write errors may result at the time of teaching due to power failure or
static noise, in which case the Unit beeps and the operation indica-
tors flash. If any of these occur, re-input teaching using the teaching
button on the Amplifier.
Minute Sensing Object
This datasheet shows typical examples for detecting minute ob-
jects. These typical examples are for reference use only, because
these example operations were tested on Units sampled at random
from a lot and the values described are average values. Do not
assume that all Units ensure such operations.
E3X-NH
Others
When the power is OFF:
The moment power is turned OFF, the E3X-NH/NHB may output a
pulse signal which could affect the operation of the devices con-
nected to it. This will occur more often if power is supplied to the
E3X-NH from an external power supply, thus affecting the con-
nected timer and counter. Use a built-in power supply as much as
possible to avoid this.
In a case where the cord is extended, use a wire with 0.3 mm² min.
The total length of the cord should be 100 m max.
Power supply:
If a standard switching regulator is used as a power supply, the
frame ground (FG) terminal and the ground (G) terminal must be
grounded, or otherwise the E3X-NH can malfunction influenced by
the switching noise of the power supply.
The supplied voltage must be within the rated voltage range. Unreg-
ulated full- or half-wave rectifiers must not be used as power sup-
plies.
Do not lay wiring to the Optical Sensor together with power lines in
the same piping or ducts. Doing so will cause induction between the
lines, possibly resulting in faulty operation or destruction. Always
lay wiring to the Optical Sensor in separate or dedicated piping.
Power line
Attachment Units
Applications
E39-F10 Fiber Connector
Use the following procedure (refer to the figure) to connect fibers via
the Fiber Connector.
Splice
Retention unit
Retention unit
Fiber Unit
Protective Spiral Tube
Insert a fiber to the Protective Spiral Tube from the head connector
side (screwed) of the tube.
Protective spiral ^{Fiber Unit}
tube
Push the fiber into the Protective Spiral Tube. The tube should be
straight so that the fiber is not twisted when inserted. Then turn the
end cap of the spiral tube.
Each Fiber Unit should be as close as possible before they are con-
nected.
Sensing distance will be reduced by approximately 25% when fibers
are connected.
Only fibers with a 2.2-mm dia. can be connected. (Refer to page 9
for applicable Fiber Units.)
Protective spiral
tube
Fiber Unit
Secure the Protective Spiral Tube on a suitable place with the at-
tached nut.
Mounting panel
Hexagon clamping nut
Protective spiral
tube
Fiber Unit
Toothed washer
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