Tag: how to

Variable frequency drive (VFD) is a power control device that uses frequency conversion technology and microelectronics technology to control the AC motor by changing the frequency of the motor's working power supply. The VFD adjusts the voltage and frequency of the output power supply by switching on and off the internal IGBT, and provides the required power supply voltage according to the actual needs of the motor, thereby achieving the purpose of energy saving and speed regulation.

The power system requires a high degree of reliability. During operation, the system may have some abnormal conditions or may cause troublesome problems. Some of these situations are beyond human control and cannot be avoided. Therefore, there is a need for an efficient device to detect such failure conditions and react immediately to minimize damage to the device. Molded case circuit breakers (MCCBs) can help protect equipment. A molded case circuit breaker (MCCB) is a device that protects low-voltage power distribution systems from overloads and short circuits. Molded case circuit breakers allow quick reactivation of a circuit after clearing a short circuit or overload. MCCBs (molded case circuit breakers) can easily identify the difference between an overcurrent and a short circuit. It allows a slight overcurrent for a while, but turns on faster as the current level increases. MCCB can be used to complete protection and disconnection functions.

The function of the weighing sensor can be shown only when the weighing sensor is equipped with a good weighing display instrument. We are going to introduce the wiring and calibration of ATA-DDC5-CHB universal weighing instrument.

A load cell is actually a device that converts a mass signal into measurable electrical output. ATO has introduced how to convert the m V model output by the pressure sensor into a 4-20mA standard analog signal. But in the industrial control process, digital signals are also extremely important, so this time ATO will explain the RS485 interface function ( Modbus RTU protocol ) of the load cell transmitter.

The contactor of CJX2 series we are going to use is type 4NO, type 3NO and type 2NO+2NC. The main contact point has different performance in 220V~660V. The control coil voltage is 110VAC, 220VAC, 24VAC and 24VDC, and the 220VAC is used this time.

In a previous blog, we talked about how to use the external terminals to control the direction, start and stop of the VFD. However we found a problem, that is, the speed regulation of the VFD still needs to use the VFD control panel, so this time we will tell you how to use the external potentiometer to adjust the speed of the ATO variable frequency drive.

The common control methods of VFD are panel control, terminal control, and Modbus RTU control. The panel control is the simplest, only need to connect the power cable and motor cable, and set the parameters to control the speed and direction of the motor. The terminal control and Modbus RTU control methods are more complicated. The following will show you how to How to control VFD with push button switch/terminal control/wire control

We covered how to calibrate the load cell and connect it to the load display in our previous blog. In the process of using the sensor, sometimes we need the standard analog signal of the sensor, so we need a transmitter to convert the mV signal of the load cell into standard industrial signals, such as 0-20mA, 4-20mA, 0-10V, etc. ATO load cell transmitter is the protagonist of our introduction, its output signal is 4~20mA.

Safety light curtain is also photoelectric safety protection device (also known as safety protector, punch protector, infrared safety protection device, etc.), generally speaking, safety light curtain exists in pairs, divided into the transmitting end and the receiving end. It is to avoid personnel close to the moving machinery of a photoelectric equipment, can avoid casualties.

Solid state relay has reliable operation, long life, no noise, no spark, no electromagnetic interference, fast switching speed, strong anti-interference ability, and small size, impact resistance, oscillation resistance, explosion-proof, moisture-proof, anti-corrosion, compatible with TTL, DTL, HTL and other logic circuits, with small control signals to directly drive large current load.

After the sensor is powered on, a green light will be emitted through the lens, and the light-colored plane will gradually approach the light source. When the set distance is reached, the sensor signal output will be triggered. When the dark block is moved to the light source of the sensor, it can be found that the trigger of the sensor is relieved. We can also adjust the sensitivity through a knob.

Fiber optic amplifier can be used as a type of beam or diffuse sensor. The combination of fiber amplifiers and fiber sensing can meet the induction requirements of complex and variable industrial automation systems. Optical fiber can be easily integrated in space limited places to solve the problem of difficult signal collection; Fiber optic sensor can process signals with high precision and convert different information to output to automatic systems.

The rotary encoder is a device used to measure the speed and cooperate with PWM technology to realize rapid speed regulation. The photoelectric rotary encoder can convert the angular displacement, angular velocity and other mechanical quantities of the output shaft into corresponding electrical pulses through photoelectric conversion. output (REP). Divided into single output and dual output. The technical parameters mainly include the number of pulses per revolution (dozens to thousands), and the power supply voltage. Single output means that the output of the rotary encoder is a set of pulses, while the rotary encoder with double output outputs two sets of pulses with phase A/ B difference of 90 degrees. Through these two sets of pulses, not only the speed can be measured, but also the rotation can be judged direction.

Proximity sensor is a new type of integrated switch, which is an ideal electronic switch sensor. It has a lot of advantages, including small size, fast frequency response, wide voltage range, strong anti-interference ability, high repositioning accuracy, high operating frequency, reliable operation, long life, low power consumption, corrosion resistance, vibration resistance and adaptability to harsh working environments. What’s more, there will be no friction during the use of the proximity sensor, and will not increase the torque of each sensed element.

The inverter converts DC power (battery, storage battery) into AC power (usually 220V 50Hz sine or square wave). In general, an inverter is an electronic device that converts low voltage (12, 24, 48 volts, etc.) DC power into 220V AC (or other voltages) power. It consists of an inverter bridge, control logic and filter circuit. In daily life, 220 volt alternating current is usually rectified into direct current for use, and the inverter is the opposite. We are in an era of "mobile", mobile office, mobile communication, mobile leisure and mobile entertainment. In the mobile living state, not only the low-voltage direct current supplied by the battery or the battery is required, but also the alternating current which is indispensable in the daily environment. The inverter is to meet our needs.

When the brushed DC motor is working, the coil and the commutator rotate, but the magnetic steel and the carbon brush do not rotate. The alternating change of the current direction of the coil is accomplished by the commutator and the carbon brush that rotate with the motor. Compared with brushless motors, brushed motors have fewer wires, just one positive and one negative wire. If the BDC motor needs to be reversed, just switch the position of the two wires and it will be done.

A circular connector is a type of electromechanical component used to make or break an electric circuit. These multi-pin connectors are basically cylinder-shaped and feature a circular mating surface designed for connection. What does its inner structure looks like? How do we disassemble it for wiring? What benefits could it bring to us? Where are they applied? This blog will lead you to the answers.

A portable vibration meter is a simple instrument that can measure the vibration displacement, vibration velocity, and vibration acceleration of the equipment. It is generally used for equipment inspection. The portable vibration meter is small in size, light in weight and compact in structure. The instrument integrates the functions of multi-channel vibration acquisition, infrared temperature measurement and laser speed measurement, which not only meets the requirements of portable acquisition, but also realizes powerful on-site Data acquisition and machine failure analysis functions.

Rotary switch is a multi - loop control appliance which is made up of several contact components of the same structure. It consists of operating mechanism, positioning device, contact, contact system, rotating shaft, handle and other components. The contact is in the insulating base, double breakpoint contact bridge structure, the moving contact is designed to automatically adjust to ensure the synchronization of on-off, static contact is installed in the contact seat. The use of CAM and bracket operation, control contact closure and disconnect.

Miniature circuit breaker, short for MCB, is one of the most widely used terminal protection appliances in building electrical terminal distribution devices. And this article shows the right selection of MCB based on its electrical parameters. The rated breaking capacity of MCB is the maximum short-circuit current value that can be broken without any damage to the circuit breaker. The miniature circuit breakers currently on the market generally have several rated breaking capacities, including 4.5kA, 6kA and 10kA according to the relevant technical data and design manuals provided by various manufacturers.