Inductive sensor: the intelligent guardian of escalator safety and stable operation

Inductive sensors play a crucial role in the safe and stable operation of escalators. It is like the "intelligent guardian" of an escalator, ensuring the safety of passengers and the normal operation of equipment by accurately detecting various key parameters.

For example, it can monitor the rotational frequency signal of the main motor turntable, thereby accurately controlling the speed of the main motor; It can also monitor the speed of the handrail in real-time and accurately, effectively ensuring the synchronization between the handrail and the speed of the steps; It can also quickly alarm for abnormal situations such as missing steps and broken chains, and promptly send signals to make the escalator brake urgently. The following presents the application of inductive sensors in escalators through practical cases.

Case 1: Lack of ladder detection

On the escalator of a subway station in a certain city, M30 proximity switches are installed next to the step rails to detect the steps. The escalator operates normally, and the proximity switches will sense the passing steps at a certain frequency, generating corresponding pulse signals. If there is a pulse loss, the control system will determine it as a missing step and immediately trigger the corresponding protection mechanism, such as stopping the elevator operation, to ensure the safety of passengers.

site installation pictures

Product Features

Model: IN22-PS30PO-L00A

Installation type: Non flush

Detection distance: 22mm

Output polarity: PNP

Operating voltage: 10-30VDC

Connection method: M12 connector

Shell material: Nickel plated brass

Case 2: Monitoring of handrail speed

By installing the speed measuring wheel directly opposite the left and right armbands, the speed of the armbands can be monitored in real-time and accurately. When the handrail is running normally, the proximity switch will sense passing objects at a certain frequency, thereby generating corresponding pulse signals. The control system calculates the speed of the handrail based on the frequency of these pulse signals. If the speed of the handrail is abnormal, such as too fast or too slow, the frequency of the pulse signal detected by the proximity switch will change, and the control system will immediately trigger the corresponding protection mechanism, such as stopping the elevator operation, to prevent passengers from falling due to the inconsistency between the handrail and the step speed, ensuring its synchronization with the step speed to ensure passenger safety.

Product Features：

model：KRONZ-IN4-PS12OP68-A12

Appearance：M12 cylindrical thread type

Installation type： Non flush

Detection distance：4mm

Output polarity： PNP normally open

Operating voltage：10-30VDC

Connection method：M12 connector

Shell material：Nickel plated brass

The application examples of inductive sensors in the safe and stable operation of escalators fully demonstrate their excellent performance and key value. It provides accurate detection capabilities and rapid response mechanisms to ensure the safe operation of escalators, effectively preventing various potential hazards and allowing passengers to use escalators with peace of mind.

Kronz offers a wide variety of inductive sensors, with a wide range of options and strong reliability. They are available in ultra small, standard, square, ring, and special applications (all metal series, high voltage series, high and low temperature series, corrosion resistance series, analog series). When you hesitate to choose a sensor, Kronez inductive sensors will surely win your trust with their excellent quality and diverse functions, becoming your most solid technical partner on the road to project success.