Tag: technical setup video

A load cell is a force transducer. It converts a force such as tension, compression, pressure, or torque into an electrical signal that can be measured and standardized. As the force applied to the load cell increases, the electrical signal changes proportionally. We covered How to use PLC to monitor the data of load cell transmitter in our previous blog. Today we'll show you how to use HMI to display the data of load cell in real time.

A three phase converter is needed when the "phase" required does not match the "phase" available. In other words, the equipment needs three phase power and only single phase power is available. Phase converters operate by converting single phase power into three phase power. They can also provide split phase voltages from the three phase power source. A three phase converter is used to allow operation of three phase equipment when single phase electrical services are the only power available or vice versa. The majority of the time phase converters are utilized to produce three phase power from single phase power sources as utility companies will associate higher fees for three phase electrical services due to the extra transformers, cabling, and metering required. In this article, we will introduce how to convert single phase to three phase converter.

The working principle of the constant pressure water pump is as follows:

1. The VFD drives the water pump, and the pressure sensor/transmitter feeds back the pressure signal to the VFD to form a closed loop system.
2. When the water pipe pressure is less than the set value, the VFD wakes up and starts pumping water.
3. When the pressure does not reach the set target, the operating frequency will continue to increase to the rated frequency of the pump.
4. When the pressure is greater than the set pressure, the operating frequency will decrease.
5. When the pressure is greater than the sleep pressure, the frequency decreases to the sleep frequency for a period of time, and then stops pumping water.
6. When the pressure is lower than the wake-up pressure, the pump starts to run again.

Brix refractometers are a common instrument used to measure the sugar content of a solution. Increasing sugar content leads to an increase in the refractive index. By passing light through a sample and measuring the refraction, the amount that the light bends, the sugar content can be measured.

As the seasons are changing and climate change is unpredictable, we start to think of the various maintenance needed around the home such as changing the furnace filters, changing smoke detector batteries, making sure we have a good battery in our vehicle, etc. So, this is also a good time to do a check-up and perform general maintenance on your phase converter!

A programmable logic controller (PLC) or programmable controller is an industrial computer that has been ruggedized and adapted for the control of manufacturing processes, such as assembly lines, machines, robotic devices, or any activity that requires high reliability, ease of programming, and process fault diagnosis. A variable-frequency drive (VFD) is a type of motor drive used in electro-mechanical drive systems to control AC motor speed and torque by varying motor input frequency and, depending on topology, to control associated voltage or current variation.

A variable frequency drive (VFD) is a type of motor controller that drives an electric motor by varying the frequency and voltage of its power supply. The VFD also has the capacity to control ramp-up and ramp-down of the motor during start or stop, respectively. Even though the drive controls the frequency and voltage of power supplied to the motor, we often refer to this as speed control, since the result is an adjustment of motor speed. In this article, we will test VFD constant pressure water supply system.

UPS is an uninterruptible power supply with energy storage device. It is mainly used to provide uninterrupted power supply to some devices that require high power stability. When the mains input is normal, the UPS will stabilize the mains and supply it to the load. At this time, the UPS is an AC voltage stabilizer, and it also charges the battery inside the machine; when the mains is interrupted (accidental power failure) When the UPS is switched on, the UPS will immediately supply 220V AC power to the load by switching the DC power of the battery to the load, so that the load can maintain normal operation and protect the software and hardware of the load from damage. UPS devices usually provide protection against overvoltage or undervoltage.

Programmable relay stores some typical relay logic control program in internal memory in advance and realize some simple logic control and sequence control function by the user program combination and calls. Its integrated internal software function and programming software can replace the traditional relay logic circuit, such as the logic circuit composed of relay, contactor and timer, and has a strong anti-interference ability. Therefore, programmable relay is widely used in industrial automation control system, small machinery and devices, building electrical and other fields. It is applicable to the control of intelligent residence system, lighting system, heating and ventilation system, door, window, fence and moving door.

Economy linear stepper motor is a stepper motor with lead screw, this stepper motor can be used in many high-precision requirements including precision calibration, precision fluid measurement, and precise positional movement, it can directly move linearly, which can make the machine miniaturized. The step size of the linear stepper motor is determined by the step angle of the motor and the pitch of the internally threaded nut and the lead screw. In order to ensure high working efficiency, there must be a certain degree of freedom between the rotor and the lead screw, which requires a certain gap between the two, which is about 0.03 to 0.08 mm backlash.

A programmable logic controller (PLC) or programmable controller is an industrial computer that has been ruggedized and adapted for the control of manufacturing processes, such as assembly lines, machines, robotic devices, or any activity that requires high reliability, ease of programming, and process fault diagnosis. PLCs were first developed in the automobile manufacturing industry to provide flexible, rugged and easily programmable controllers to replace hard-wired relay logic systems. In this article, we will introduce the counter function of PLC.

An automatic transfer switch (ATS) is a device that automatically transfers a power supply from its primary source to a backup source when it senses a failure or outage in the primary source. When a failure occurs in a primary power system, the ATS invokes a standby power source, such as an uninterruptable power supply. An ATS can also start up more long-term backup power systems, such as local diesel generators, to run electric equipment until utility power is restored.

The ATS, or automatic transfer switches, are basically the go-between utility power and generator power. There is a common load fed from the transfer switch usually to all your emergency panels. During a test or an actual power failure, there is a time delay before the ATS sends a signal to your generator, starting it. When the voltage and frequency of your generator is acceptable by the voltage sensing network, it sends a signal over to the mechanism. It will open up normal power and then close the generator. Now you're online and everything is stable at this point. When normal power, or utility comes back online there is a time delay preventing the generator from switching back- just in case normal power is unstable for a while.

VFD is mainly composed of rectification (AC to DC), filtering, inverter (DC to AC), braking unit, drive unit, detection unit and micro-processing unit. The VFD adjusts the voltage and frequency of the output power supply by turning 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. In addition, the inverter has many protection functions. Such as overcurrent, overvoltage, overload protection and so on. VFD is frequently used for speed regulation of AC motors or reducing the impact on the power grid on start-up.

A stepper motor, also known as step motor or stepping motor, is a brushless DC electric motor that divides a full rotation into a number of equal steps. The motor's position can be commanded to move and hold at one of these steps without any position sensor for feedback (an open-loop controller), as long as the motor is correctly sized to the application in respect to torque and speed.

Variable Frequency Drive changes the voltage of the motor power supply while changing the frequency of the motor power supply, so that the magnetic flux of the motor is kept constant, and the efficiency and power factor of the motor do not decrease in a wide speed regulation range. Because it is the ratio of control voltage (V) to frequency (F), it is called V/F control. And its V/F control features are simple control circuit structure, low cost, good mechanical properties and hardness, which can meet the smooth speed regulation requirements of general transmission.

What about DTU? DTU, data transfer unit. Data transfer unit offers complete, precise control of lighting and environmental controls from your computer. Using wireless communication, the DTU connects with all of your remote USB devices like lighting ballasts and temperature controls.

A soft starter is an additional device that can be added to a typical AC electric motor that will allow the motor to use a different startup method. The purpose of this device is to reduce the strain put on the motor during the typical power-up phase of a motor. To accomplish this, a soft starter will slowly and gradually begin applying increasing voltages to the motor. This allows for a smooth acceleration of power instead of a sudden and violent burst of power that could potentially cause damage to the motor and the machine as a whole.

Servo lock is essentially a braking mode. When the servo motor driver selects the speed control mode, closed-loop position control cannot be performed. Therefore, the stop position of the servo motor is random, and there is no holding torque after stopping. At this time, If there is an external force (such as gravity) on the load, it may cause the servo motor to move and deviate from the stop point after it stops.

Thermal label printer is that a semiconductor heating element is installed on the print head, and the print head can print out the required pattern after heating and contacting the thermal printing paper. Its principle is similar to that of a thermal fax machine. The image is created by heating the membrane to create a chemical reaction. This thermal label printer chemical reaction takes place at a certain temperature. High temperatures speed up the chemical reaction. When the temperature is below 60℃, it takes quite a long time, even years, for paper to become dark. At 200℃, the reaction takes place in a matter of microseconds.