UNS0887A-P 3BHE008128R0001 modular

Product characteristics: UNS0887A-P 3BHE008128R0001 modular

Fast speed, large flash memory and powerful CPU function

Convenient configuration and simple programming

Three configuration languages are provided

Rich networking communication functions

Application industry:

Power plant, steel plant, automobile, petrochemical, tobacco, metallurgy

Precautions: please install and debug according to the product manual to avoid damaging the product

Reasons for choosing us – seven core advantages:

New and original import:

All products are produced and supplied by foreign manufacturers

Strict test:

All products have been strictly tested by professional technicians for a long time before warehousing and delivery

Free product consultation:

Before purchase and after use, if you encounter technical problems with the product, you can provide free 24-hour service hotline for product consultation

The ground wire of PLC control system includes system ground, shielding ground, AC ground and protection ground. The disturbance of the grounding system chaos to the PLC system is mainly caused by the uneven distribution of potential at each grounding point, and the existence of ground potential difference between different grounding points, which causes the ground loop current and affects the normal operation of the system. For example, the cable shielding layer must be grounded at one point. If both ends A and B of the cable shielding layer are grounded, there is a ground potential difference, and there is current flowing through the shielding layer. When abnormal conditions such as lightning strike occur, the ground wire current will be greater.

In addition, the shielding layer, the grounding wire and the earth may form a closed loop. Under the effect of the changing magnetic field, the induced current will appear in the shielding layer, which will interfere with the signal loop through the coupling between the shielding layer and the core wire. If the system grounding is confused with other grounding, the generated ground circulation may produce unequal potential distribution on the ground wire, affecting the normal operation of logic circuit and analog circuit in PLC. The logic voltage interference tolerance of PLC operation is low, and the distribution interference of logic ground potential easily affects the logic operation and data storage of PLC, resulting in data confusion, program flight or crash. The distribution of simulated ground potential will lead to the decline of measurement accuracy and cause serious distortion and misoperation of signal measurement and control.