PHOTOELECTRIC SWITCH   PAGE1   PAGE2   PAGE3   PAGE4   PAGE5   PAGE6   PAGE7   PAGE8

Model composition and definition of infrared ray photoelectric switch.

N.o

Composition

Code and definition

1

Basic form

G: infrared ray photoelectric switch

2

Outward appearance code

185076

3

Working voltage

2.90-250VAC 3:10-30VDC 4:24-240VAC 5:Special voltage

4

Detection way

A:diffused reflection type(scattered reflection type)
B:feedback reflection type mirror(mirror reflection type)
C:penetration type(correlation type)
D:marking detection type
G:optical fiber type

5

Detection distance

05:5cm; 10:10cm; 3:3cm; 101:10m

6

Output form

N: NPN transistor output P: PNP transistor output
J: Relay contact output L: AC two-wire output
S: with two outputs: NPN and PNP (NOTE: when you order NP type output form, the output state can be or NO(A), or NC(B), can't be NO+NC(C).

7

Output state

A: Normally open NO (light entering ON) B: Normally close NC (light sheltering ON)
C: normally open+normally close NO+NC

8

Subsidiary

T1: front delay T2: rear delay Y
T with aviation connector I: special requirement

For example: G18-3A 10NA
That indicates the infrared ray photoelectric switch of M18 cylinder, DC 10-30V working voltage,diffused reflection type,
detection distance 10 cm, and NPN normally open type.

Description of technical terms of photoelectric switch


Technical Terms
Description


Technical Terms

Explanation


Optic axis of beam

Standard detected
object

That indicates the standard detected object, which is to
determine the basic specifications in the reflection type
sensor. Generally, it is white and lusterless. Use relevant
detected object (for example, the slice) to the sensor
for special purpose.


Detection axis

Min detected
object

That indicates the smallest object, which can be detected
by sensor under a certain condition. To correlation type
and mirror reflection type, that indicates opaque body
(wholly light sheltering). To reflection type, that indicates
the corresponding value of iron wire or copper wire.


Detection
distance
Through-beam type
Stably set distance between transmitter and receiver


Repeated precision

That indicates the error of response position when
repeating action under a certain condition.

Retroreflective type
Standard setting distance between sensor and reflector
(omit 0on the occasion with 0)


Response time

That indicates the delayed time of outputting ON or
OFF signal after the detected state changes.


Diffuse type
The max stable detection distance of detectable
object, generally white matt paper
(omit 0on the occasion with 0)


Intensity of
illumination of
operating
environment
(resistance to
mixed
astigmatism)

That indicates max, intensity of illumination, which
doesnt result in error action, expressed by intensity
of illumination of photorecetor photic surface.

Technical Terms

Description


Cautions
To through-beam type and retroreflective type
The set distance should be less than the detection distance stipulated in the operation instruction. Because of keeping a room, although it can work when the set distance is bigger than the stipulated detection distance, the performance cannot be guaranteed. In addition, please make sure to keep certain room in the bad environment with rubbish and dust when setting a distance.

To diffuse type
The detection distance shown in the specification manual is in accordance with standard detected object. Actual detection distance will change in pace with the change of the size, color, surface evenness of detected object. Please ensure the stipulated room when set distance.
According to the change of detected object size and variation regulation of detection distance, bigger detected object, bigger reflection volume, longer detection distance. But when the size of optic receiving surface is bigger than the size of the detected object, the detection distance wont increase even if the object size increases again.

The difference between different detection distances of the detected
object (Apply to diffuse type)

A. White matt paper (reference)
B. Natural color carton
C. Veneer
D. Black matt paper (Grade 3 glossiness)
E. Glossy vener (Natural cream-colored board, brown propylene board, red
ethylene synthetic board)
F. Grey ethylene synthetic board
G. Green glossy rubber board
H. Alboard
I. Reflector or reflecting board
J. Rusty iron bar10
K. Black cloth
L. Dark blue cloth


 

 

 


Angle
characteristic



To through-beam type and retroreflective type, move
from right to the centering of left direction within
each setting distance to gradually reduce the angle.
That is shown by locus diagram of sensor action
response angle (under max sensitivity state)

The characteristic of detected object size and detection distance


To diffuse type, because the size of detected
object affects detection distance, this diagram
is useful to determine the stable detection
distance according to the size of detected object.
The sensor with sensitivity button is to turn the
sensitivity to the relevant position of max.
Detection distance where exactly detecting the
standard detected object.

Method of anti mutual-interference and cautions

The unstable action resulted from entrance light from another sensor
while the photoelectric sensor is approaching the equipment is called
mutual interference.

Mutual cross mounting of transmitter and receiver
When using diffuse type in parallel, the mutual
   spacing should be kept at over 1.4 times detection distance.
When using through-bam type in parallel, the mutual spacing
   should be kept at over 0.4 times detection distance.
The power voltage should be within the range of
  operating power voltage.
The following mounting occasions will result in error
  action, take note of.
Dusty occasion
The occasion with corrosive gas
The occasion directly spattered with water, oil and agent, etc
Outdoor or the occasion directly shone by hard light like,
sunlight

        

Diagram of photoelectric switch

NC type diagram
PC type diagram NPN. PNP both available type diagram

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