Proximity switch model meaning and model

Proximity switches are widely used in aviation, aerospace technology and industrial production. In daily life, such as hotels, restaurants, garages, automatic doors, automatic hot air blowers have applications. In terms of security and anti-theft, such important places as data files, accounting, finance, museums, and vaults are usually equipped with anti-theft devices composed of various proximity switches. In measurement technology, such as length and position measurement; in control technology, such as displacement, velocity, acceleration measurement and control, a large number of proximity switches are also used.

Among all kinds of switches, there is a component that has the ability to "sense" objects approaching it-displacement sensor. Use the sensitive characteristic of the displacement sensor to approach the object to achieve the purpose of controlling the switch on or off, which is the proximity switch.

When an object moves to the proximity switch and approaches a certain distance, the displacement sensor will "sense" and the switch will act. This distance is usually called the "detection distance". But different proximity switches have different detection distances.

Sometimes the inspected objects are moved to the proximity switch one by one at a certain time interval, and then leave one by one, and this is repeated continuously. Different proximity switches have different responsiveness to the detected object. This response characteristic is called "response frequency".

Proximity switch model meaning: Proximity switch is also called non-contact travel switch. In addition to completing travel control and limit protection, it is also a non-contact detection device. It is used to detect the size of parts and speed measurement, and it can also be used for frequency conversion. Counter, variable frequency pulse generator, liquid level control and automatic connection of processing programs, etc. Features include reliable work, long life, low power consumption, high repositioning accuracy, high operating frequency, and adaptability to harsh working environments.

1. Type of switch:

Unmarked/Z: inductive/inductive self-diagnosis

C/CZ: Capacitive/capacitive self-diagnosis

N: NAMUR safety switch

X: Analog

F: Hall type

V: Reed type

2. Appearance code:

J: Threaded cylindrical

B: Cylindrical

Q: Angular column shape

L: square

P; flat

E: Short cylindrical

U; Groove

G: Combined shape

T: Special shape

3. Installation method:

No mark: non-buried type (non-flush installation type)

M: Buried type (flush installation type)

4. Power supply voltage:

A AC 20-250V

D DC 10-30V (analog: 15-30V)

DB DC 10-65V

W AC/DC 20-250V

X special voltage

5. Detection distance:

0.8-120mm-subject to the sensing distance of the switch

6. Output status

H second line normally closed

C two-wire opening and closing optional

SK AC three-wire normally open

SH AC three-wire normally closed

ST AC three-wire open + closed

NK three-wire NPN normally open

NH three-wire NPN normally closed

NC three-wire NPN opening and closing optional

PK three-wire PNP normally open

PH three-wire PNP normally closed

PC three-wire PNP open and close optional

Z three-wire NPN, PNP switching all-around conversion

GT Note① AC four-wire open + closed

HT Note②AC four-wire open + closed

NT four-wire NPN open + closed

PT four-wire PNP open + closed

J five-wire relay output

7. Connection mode unmarked 1.5m lead wire

A22m lead (A3 is 3m) and so on

B internal wiring terminal

C2CX16 two-core aviation plug (C5 is five-core) analogy

F plastic thread four-pin plug

G metal thread four-core plug

Q plastic four-pin plug

S2CS12 two-core aviation plug (C5 is five-core) analogy

LM8 three-pin plug

RS3 multifunction plug

E special connector

8. There is no mark on the opposite end of the sensing surface direction

Y left end

W right end

S upper end

M separate proximity switch model list

The common proximity switch models are NPN type and PNP type. The difference between the two is that if a negative signal is input, the NPN type proximity switch is used directly, and if it is a positive signal input, the PNP type proximity switch is used directly.