The rotary incremental encoder outputs pulses when it rotates, knows its orientation by the counting device, and remembers the orientation by relying on the internal memory of the counting device when the encoder does not move or the power goes out. In this way, when the power is off, the encoder can not have any movement, and when the call is working, the encoder can not have interference and lose the pulse in the process of output pulse, otherwise, the zero point recalled by the counting equipment will be offset, and the amount of this offset is impossible to know, as long as the wrong production result can be known.
If you add a reference point, the Encoder will refer to the Bearing batch to improve the memory orientation of the counting device every time it passes through the reference point. In the past, it was not possible to ensure the accuracy of the bearings. For this reason, in the industrial control, there are ways to find the reference point first for each operation, and to make change at start-up. This method is more troublesome for some industrial control projects, and even does not allow the start-up change, so there is the emergence of JUE encoder, because of its unique, anti-interference, no need to recall power failure in each direction, it is widely used in various industrial systems in the viewpoint, length measurement and positioning control.
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Precautions for the use of safety barriers
First, pay attention to the capacitive and inductive resistance of cables and field equipment, explosion-proof is the system explosion-proof, in addition to the need for P+F safety barriers to reach the required explosion-proof level, the energy storage of cables and field equipment is also a key issue. Especially after the parametric certification replaces the system certification, the engineering company has a special ...
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The principle of installation of safety barriers
1. The safety barrier should be installed in a safe place, and the environmental conditions should meet the requirements of the "application conditions" in the "Safety Barrier Selection Sample".
2. The connecting wires of the intrinsically safe end (blue end) and non-intrinsically safe end circuits of the barrier safety barrier are in the sink ...
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Understanding sensor accuracy – a blessing
There are three goals of precision: precision, correctness, and precision.
precision
It sheds light on the sloppy nature of the measurement results. That is, for a certain stable goal (to be measured) by the same measurer ...
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Analysis of the causes of repairs encountered in encoders – Doublebless
1. Encoder self-failure: It refers to the failure of the encoder's own components, resulting in its inability to generate and output correct waveforms. In this case, the encoder needs to be replaced or the internal equipment repaired.
2. The encoder connection cable is faulty ...
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Classification of rotary encoders
There are two main types of encoders, incremental encoders and affirmative encoders. The incremental encoder reads the change in the viewpoint displacement, while the affirmative encoder reads the positive viewpoint of the encoding axis. They are done using three common skills, i.e., optical, mechanical, or magnetic.
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Pressure Transmitter Verification Regulations
A pressure transmitter is a type of instrument that converts a pressure variable into a consistent output signal that can be transmitted, and there is a given continuous function relationship between the output signal and the pressure variable, which is generally a linear function. Pressure variables include positive and negative pressure, differential pressure and pressure. Pressure transmitters are available in electric and ...
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Features of potentiometer torque transducers – Beggarb
Torsion bar torque transducer is mainly composed of torsion bar tension spring, rotation-displacement converter, and potentiometer. The main function of the torsion bar tension spring is to detect the torque of the driver acting on the steering wheel and convert it into the corresponding corner value.
The angle-displacement converter is a pair of spiral mechanisms that stretch the torsion bar.
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Introducing the P+F Ultrasonic Technology Series
In industrial use, ultrasonic sensors are characterized by high reliability and versatility. Since the ultrasonic sensor measurement method works reliably in almost all environmental conditions, it is possible to provide a stable connection for object detection or level measurement even in the most chaotic tasks.
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Wireless HART technology for industrial processes
WirelessHART uses the 2.4 GHz band (which is no-nonsense and globally) as a transmission medium for a variety of radio skills, including WLAN, Bluetooth, and ZigBee. However, WirelessHART is more than just a variant of WLAN.
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Sensor calibration method – Blessing Blessing
Sensor calibration refers to the process of transmitting the standard value expressed by the norm to the indexing of the sensor's operating range, and the indexing is determined.
The calibration of the sensor is based on the standard value generated by a standard device (e.g. a known standard force, pressure, torque, displacement, etc.).
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Analysis of mechanical damage of encoder servo
Mechanical damage is common in servo response encoder problems, including hardware damage to the internal component structure of the encoder due to mechanical oscillation, collision, impact, wear and tear. Excessive mechanical oscillations may cause damage to the encoder disc, shaft and bearing.
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A common type of sensor – a sensor
Resistive
A resistive sensor is a device that converts physical quantities such as displacement, deformation, force, acceleration, humidity, temperature, etc. into resistance values. There are mainly resistive strain gauge, piezoresistive, thermal resistance, thermal, gas-sensitive, moisture-sensitive and other resistive sensor materials.
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Single receiver and multiple receiver for photoelectric sensors
Photoelectric sensors are generally composed of three parts: transmitter, receiver and detection circuit, and its operating principle is to first convert the measured change into the change of the optical signal, and then convert the change of the optical signal into the change of the electrical signal (this part is called the "photoelectric effect"). According to the detection method, it is not ...
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Pressure sensor zeroing calibration matters - double blessing
1) It is recommended to place the pressure sensor and its tee valve at the level of the axillary line, which is used for ventilation and sensor zeroing.
2) Approve the maintenance cap on the three-way valve to be perforated, connect the sensor with the monitor, and follow the instructions of the monitor to ...
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Factors influencing the measurement accuracy of ultrasonic sensors - Doublebless
Sensors are used for a variety of measurements, but the difference in measurement accuracy has a great impact on the user, so what are the main factors that affect the measurement accuracy?
Measurement accuracy ...
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The main categories of encoders are as follows
1. Classification according to the way of engraving the disc is different
(1) Incremental type: that is, every time the angle of the unit is emitted, a pulse signal is emitted (there is also a sine and cosine signal, and then it is subdivided, and the pulse with a higher frequency is chopped), usually the output of phase A, phase B, phase Z, phase A and phase B are ...
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Introduction and installation matters of the safety barrier
The safety barrier, also known as the safety factor meter, is an important part of the intrinsic safety system.
There are two main types of barriers: P+F Zener barriers and P+f isolated barriers. The core elements of a double Forgina barrier are a diode, a current-limiting resistor and a fast fuse.
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The output signal of the torque sensor is the sensor of the company
1. The basic output method of torque sensor signal is: square wave signal and pulse signal.
Voltage analog signal output or current analog signal output (unidirectional, static torque measurement) can be made according to user needs.
2. Twist ...
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Precautions during the installation of safety barriers
1. The safety barrier should be installed in a safe place, and the environmental conditions meet the requirements of the "application conditions" in the "Safety Gate Selection Sample".
2. The connecting wires of the intrinsically safe end (blue end) and non-intrinsically safe end circuits of the barrier safety barrier should be laid separately in the wiring slot.
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Test Methods for Torque Transducers – Beggarbless
In recent years, the use of torque sensors has gradually increased, it can convert physical changes into accurate electrical signals, so what methods can torque sensors go through?
The proven test method of torque sensors is ...
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