Talk about the working principle of the two-line distributor its salient features

Since the stepper motor is a performance component that converts the electrical pulse signal into a linear angular displacement, it cannot be directly connected to the AC DC power supply, it is necessary to use a special device-a stepper motor to control the drive. The manipulator can announce pulse signals whose pulse frequency can be changed a few hertz to several tens of kilohertz. It supplies a pulse sequence to the circular two-wire distributor.

The main function of the ring two-wire distributor is to distribute the pulse sequence the control link according to certain rules, the distributor is amplified by the power amplifier added to the input terminals of the stepper motor drive power supply to drive the stepper motor. Rotation. There are two main types of ring-shaped two-wire distributors: One is to use computer software planning to complete the functions required by the ring-shaped distributor, generally called soft ring-shaped two-wire distributor.

The other is a ring-shaped two-line distributor composed of hardware, which is generally called a hard ring-shaped two-line distributor. The power amplifier mainly amplifies the smaller output signal of the ring two-wire distributor to achieve the purpose of driving the stepper motor.

Distinguished features of two-line distributor

The obvious feature is that the RCARCA signal can be extended to about 200 meters through an ordinary coaxial cable, which can completely solve the problem of multiple varieties quantities of display equipment due to one signal source in the project. When the user uses it, first connect the signal to the INPUT of the two-wire splitter through a standard high-quality line. The two-line splitter has two four more output ports, which can be connected to the local display. , Other display devices that can be connected to the remote end, after adjusting the brightness contrast on the two-line distributor, the picture clarity of the remote display device can be adjusted to the same effect as the local one. After adjustment, the picture quality of the remote display device will be qualitatively improved. The double-line distributor can eliminate the phenomenon of tailing ghosting to the greatest extent, which can fully meet the high-quality picture quality requirements of various key projects in my country. .

Two-line distributor varieties

Two-line splitters are now widely used have similar effects in different areas. They mainly include: VGA two-line splitter, HDMI two-line splitter, AV audio video two-line splitter, DVI two-line splitter, component video dual Line splitter, S-Video two-line splitter, audio two-line splitter, video two-line splitter, DP two-line splitter, serial two-line splitter.

Two-line distributor: electric terminal system

The command time relay in the electric control cabinet makes the system act actively according to the set oil supply interval time. The two-line distributor wholesale company presses the "oil supply time extension" to indicate the abnormality of the oil supply operation, there is also an "oil reservoir empty" , "Overload operation" other alarm signals. The command time relay is adjusted according to the time required by the system for one-time oiling operation practice plus 2 to 5 minutes.

The end of the oil supply main pipe is equipped with a pressure-operated valve a differential pressure switch valve two pressure switch valves (one for each pipeline). When the end pressure reaches the set value, a signal is sent to the electric control cabinet, the reversing valve 1a is reversing lubricating The pump stop system once finished the oiling operation. After the set time interval, the system operates again, another main oil pipe supplies oil.

System planning is often planned within 5 minutes (within 8 minutes at the maximum) of the oil supply time, the standard setting pressure of the differential pressure switch/pressure operating valve is about 5MPa.

The pressure difference switch/pressure operation valve is set at the end of the oil supply main pipe the pressure loss is the most. It is recommended to install a distributor at the back to facilitate the renewal of the end grease.

For small medium-sized systems, in order to facilitate electrical wiring, the front-end pressure control reversal can be selected, that is, a pressure controller is installed in parallel on the second outlet pipeline of the reversing valve, there is no need to install a differential pressure switch/pressure operated valve at the end.