When the object moves to the proximity switch, the dielectric constant of the object and the proximity switch changes, so that the state of the circuit connected to the measuring head also changes, so that the switching can be controlled on and off. The detection object of this proximity switch is not limited to metal conductors, but also can be insulated liquid or powdery objects, when detecting objects with a lower dielectric constant of ε, the multi-turn potentiometer (located at the rear of the switch) can be adjusted clockwise to increase the inductive sensitivity, and the general adjustment potentiometer makes the capacitive proximity switch operate at the position of 0.7-0.8Sn.
Pilz safety proximity sensors and capacitive proximity sensors. This is because the two proximity sensors have lower environmental requirements. When the object to be measured is a conductive object or an object that can be fixed on a piece of metal, the eddy current proximity switch is generally selected because of its high response frequency, good anti-environmental interference performance, wide application range and low price. If the object to be measured is a non-metal (or metal), liquid level height, powder height, plastic, tobacco, etc. Capacitive proximity switches should be used. This type of switch has a low response frequency, but good stability. The influence of environmental factors should be considered when installing. If the object to be measured is a magnetic permeable material or the magnet is buried in the object to be measured in order to distinguish it from the object moving with it, a Hall proximity switch should be used, which has the lowest price. In the case of good environmental conditions and no dust pollution, photoelectric proximity switch can be used. When the photoelectric proximity switch operates, there is almost no effect on the measured object. Therefore, it is widely used in demanding fax machines and tobacco machinery. In the anti-theft system, pyroelectric proximity switches, ultrasonic proximity switches, and microwave proximity switches are commonly used for automatic doors. Sometimes, in order to improve the reliability of identification, the above proximity switches are often used in combination. No matter what kind of proximity switch is selected, attention should be paid to the requirements of various indicators such as working voltage, load current, response frequency, and detection distance.
For different materials of detection body and different detection distance, different types of proximity switches should be selected to make them have a high performance-to-price ratio in the system, for which the following principles should be followed in the selection:
1.1. When the detector body is a metal material, a high-frequency oscillating proximity switch should be selected, which is the most sensitive to the detection of iron-nickel and A3 steel detectors. For aluminum, brass and stainless steel detectors, the detection sensitivity is low.
1.2. When the detection body is a non-metallic material, such as; For wood, paper, plastic, glass and water, capacitive proximity switches should be used.
1.3. When metal bodies and non-metals are to be detected and controlled at a distance, photoelectric proximity switches or ultrasonic proximity switches should be selected.
1.4. When the detection body is metal, if the detection sensitivity is not high, a low-cost magnetic proximity switch or Hall proximity switch can be selected.
|
More on that
|
Peel magnetic relay - how to reset the safety relay alarm?
1. Check the alarm cause of the relay, if there is a fault, reset the relay urgently, and replace the relay in time.
2. Check whether there is a protection alarm in the control system, if there is a protection alarm, the cause of the alarm will be eliminated, and the protection alarm system will be reset according to the corresponding steps. ...
|
|
Pilz: The path of innovation that began with the "mouse connection".
The debut of "Mouse Wire" in the world of automation dates back to 2002 at the SPS trade fair in Nuremberg, where Pilz presented users for the first time with a configurable small safety controller: no need to know a "higher-level" programming language, thanks to the ease of operation, the graphical ...
|
|
Wiring method for Pilz safety relays
Power supply:
AC: Terminals A1 and A2 are connected to the power supply, and the ground wire is connected to the protective ground.
DC: A2 is connected to the ground terminal of the power supply.
Start-up loop:
Auto-start: S13-S14 shorted.
Manual monitoring start-up mode: S33-S34 ...
|
|
Pilz: Safe monitoring of cardboard feeds for packaging machines
Pilz supports manufacturers and operators of packaging machines in the implementation of packaging automation. As a well-known and trusted provider of machinery safety services to companies worldwide.
Use the myPNOZ modular safety relays
The first ...
|
|
Pilmagnetic switch – the role of a load switch
1. Breaking and closing. Because it has a certain arc extinguishing ability, it can be used to break and close the load current and the overload current of a certain multiple (usually 3-4 times) of the small stem; It can also be used to break and close a no-load transformer with a larger capacity than the disconnector allows, a longer no-load line ...
|
|
Peel Magnetic Relay – Safety Relay Alarm Reset
1. First of all, press the safety relay overload protection button directly by hand.
2. Secondly, make its contacts recover and be in a closed state.
3. Finally, you need to wait for 3 minutes to be able to proceed, through the adjustment screw, choose a slotted screw, and go deep into the bottom ...
|
|
The main anti-shielding measures of Pilz safety switches
1. Physical location of the installation – "out of reach or out of sight"
Consider installing the component in a place that is out of the reach of personnel, or directly outside the interlock switch as a protective cover to prevent disassembly or movement, as shown in the figure, whether it is a mechanical interlock on the left, or a non-...
|
|
PILZ WILL BE EXHIBITING AT THERMPROCESS 2023
From June 12 to June 16, 2023, Pilz will be present at the THERMPROCESS trade fair in Düsseldorf, Germany, at booth B10 in Hall 9.
Germany Düsseldorf Thermprocess is Germany most important trade fair for industrial furnaces and heat treatment ...
|
|
Classification of Pilz safety relays
Safety relays from PNOZ – a classic
In 1987, Pilz was a milestone in the development of the world's first emergency stop safety relay to protect people and machines. PNOZ has also become synonymous with safety relays and is used by customers all over the world. The full range ...
|
|
Peel magnetic relay - the wiring method of PLC and relay
1. Y0 is connected to one end of the coil A1 of KA1;
2. The other end of KA1, A2, is connected to 24V;
3. Y1 is connected to A1 at one end of the coil of KA2;
4. The other end of KA2 A2 is connected to 24V;
5. COM terminated to 24V.
...
|
|
Peel magnetic relay - the selection principle of electromagnetic relays
1. Selection of relay coil application power supply
Under normal circumstances, most of the relays of direct current are selected in the circuit design, and the types of power supplies used in relays can also be considered according to the characteristics of the control circuit. Secondly, it is necessary to think about the power consumed by the relay, and assume that the relay coil is supplied ...
|
|
Pilz: The solution for the safe operation of AGVs
As one of the core equipment of smart factory logistics, automatic guided vehicles (AGVs) play an increasingly important role in the factory logistics automation system. They travel through the warehouse and complete the handling task efficiently, which brings great convenience to the production, but also has certain safety hazards.
|
|
Pilz: Become a certified expert in industrial security
Industrial security has become an integral part of automation, but with new requirements and specifications, manufacturers, integrators, and operators are faced with the question of how their employees can meet the new challenges. In response, Pilz has launched a new safety training course that can help students learn ...
|
|
PILZ presents the new base module PNOZmulti2 – PNOZ m B0.1
In terms of functionality and cost-effectiveness, it is more suitable for customer needs of small and medium-sized security applications.
"Similarities and differences" between PNOZ m B0 and PNOZ m B0.1
Similar to PNOZ m B0, the base module body of PNOZ m B0.1 offers 20 safe digital inputs that can be freely combined.
|
|
Peel magnetic relays - what are the connection methods of relays?
1. 3-pin relay wiring
The common 3-pin relay is the car horn relay.
No. 1 is the contact terminal, which connects the load;
No. 2 is the common terminal between the contact and the coil, which is connected to the power supply;
No. 3 is the coil terminal, which connects the button switch (such as the horn on the steering wheel).
|
|
Pilz I.A.M. protects data and employees
How do you grasp the issues of employee protection, responsibility protection, work efficiency, and data protection? How can you improve quality and at the same time prevent machines from being tampered with? How can data and employees be protected in equal measure?
Through I.A.M. (Identification and Access Management) "...
|
|
Peel magnetic relays – the five major classifications of relays
1. Classification by use
In terms of use, the classification of relays can be divided into two types: control relays and protection relays.
In the meantime: thermal relays, overcurrent relays, and undervoltage relays are all protective relays. And moment relays, speed relays, intermediate relays ...
|
|
Peel magnetic relays - what are the connection methods of relays?
1. 3-pin relay wiring
The common 3-pin relay is the car horn relay.
No. 1 is the contact terminal, which connects the load;
No. 2 is the common terminal between the contact and the coil, which is connected to the power supply;
No. 3 is the coil terminal, which connects the button switch (such as the horn on the steering wheel).
|
|
Peel magnetic relay – the difference between a transistor and a relay output PLC
1. The overload capacity of the transistor is less than the overload capacity of the relay
In general, in the case of a large inrush current (e.g., bulbs, inductive loads, etc.), the transistor overload capability is smaller, and more derating is required.
2. Under the condition of rated operation, the relay has the number of actions ...
|
|
Piermagnetic switches – an introduction to the functions of safety switches
1. When the load exceeds the action current, the circuit will be automatically cut off;
2. After the circuit is automatically cut off, the panel indicator light is on, which is convenient for the judgment of the fault part;
3. After troubleshooting, press the red button at the bottom of the panel to restore the normal power supply;
4. For other reasons, the shell ...
|
|
Contact
working hours
