The main functions and functions of LS power production PLC

Due to poor contact of network connectors, or due to disturbance and other problems, DP networks that have been used for a long time may show a "transient disconnection" situation, that is, occasionally disconnected instantaneously, and quickly recover to normal. If OB86 is not downloaded, the CPU will stop during a transient outage. Now all over the option to download a ...

The first generation of LS inverter selects the voltage frequency ratio scalar control method, which carries out frequency conversion speed regulation according to the linear ratio determined by the equivalent circuit of the asynchronous motor. Voltage refers to the effective value of the fundamental wave, and changing U/f can only regulate the steady-state magnetic flux and torque of the motor, not to mention dynamic control. In order to improve the low ...

The working principle of the power production contact is: when the contact coil is energized, the coil current generates a magnetic field, and the generated magnetic field leads the static iron core to produce electromagnetic attraction to the iron core, and drives the AC contact action, the normally closed contact is disconnected, the normally open contact is closed, and the two are connected to each other. When the coil is de-energized, the electric ...

The fundamental method of motor protector selection At present, there is no unified standard for motor protectors on the market, and almost every manufacturer has its own type standard. In order to meet the needs of different customers, manufacturers derive many products with different uses, and a wide range of products for the majority of users to choose ...

First, the power supply problem 1. The power supply voltage is too high When the power supply voltage is too high, the motor back electromotive force, magnetic flux and magnetic flux density all increase. Since the magnitude of the iron loss is proportional to the square of the magnetic flux density, the iron loss increases, resulting in overheating of the core. And the increase in magnetic flux causes ...

1. As soon as the inverter of the heat exchange station is opened, the pressure transmitter jumps randomly; 2. In the water supply controlled by the inverter, the pressure transformer is used as the signal to collect the pressure, and the pressure transformer is interfered by the inverter; 3. When the inverter starts the motor, the voltage transformer signal is unstable ...

1. During the holiday, low temperature can easily cause the equipment to be damp, check whether the electrical equipment is dry, whether there is moisture and condensation; 2. Check whether the grounding wire is loose and whether the cable is damaged by rodents and insects; 3. Sort out the dust and oil stains, and inverter ...

1. Air conditioning load Office buildings, shopping malls and some supermarkets and factories have central air conditioning, and the electricity consumption of air conditioning is very large during the peak electricity consumption in summer. In hot weather, the electricity consumption of air conditioners in Beijing, Shanghai and Shenzhen accounts for more than 40% of peak electricity. Therefore, with inverter equipment, drag the air conditioning system ...

1. Physical environment (1) Temperature factor Temperature has a huge impact on the lifetime and reliability of the electronic components inside the inverter. When using the inverter in a high operating temperature environment, it is necessary to take additional cooling measures to ensure that the ambient temperature is stable in the inverter.

The Viet Nam Professional Football League, sponsored by LS Group, began operations in June and is hosted by Viet Nam Professional Football Joint Stock Company. With the comeback of football events such as the Korea K League and the Bundesliga, more and more football events are also brewing to restart. ...

1. Auxiliary contact: the contact mechanically linked with the main circuit of the circuit breaker and the closing mechanism is mainly used for the display of the circuit breaker and the closing status, and is connected to the control circuit of the circuit breaker through the opening and closing of the circuit breaker to control or interlock its related electrical appliances. For example, output to signal lights, relays, etc.

GMC-6 Contactor GMC-6 Rated voltage: 110V/22OV/380V; GMC-9 Contactor GMC-9 Rated voltage: 110V/22OV/380V; GMC-12 Contactor GMC-12 Rated voltage: 110V/22OV/380V; GMC-18 Contactor GMC-18 Rated voltage 110V/ ...

1. Wiring of fire emergency lighting Generally, the flame retardant wire is used to wear the metal pipe and the thickness of the protective layer is ≥ 30mm.

Driver: Under the premise of carrying out frequency conversion skills, the servo drive has carried out more advanced control skills and algorithm operations than general frequency conversion in the current ring, speed ring and azimuth ring inside the drive (the frequency converter does not have this ring), and it is much stronger than the traditional servo in terms of function.

Step 1: If the motor can be completely separated from the load, in the case of a power failure, the motor is mechanically separated from the load, and the motor is allowed to rotate freely without load. Step 2: After powering on, select the VFD command source (F0-04) as the command channel of the operation panel. ...

As for the use of vector-operated motors, it can be divided into two categories, namely non-reactive vector control (SVC) and reactive vector control (FVC). Vectorless Handling (SVC): Due to the speed response, additional equipment for the encoder is installed in the motor dragged by the inverter, which is cumbersome. Here...

1. Active power - in the process of generating and transmitting alternating current energy, the part of energy used to convert into electromagnetic methods is called active power 2. Reactive power - in the process of AC electric energy generation and transmission, it is used for electromagnetic field AC in the circuit.

Thermal Overload Relay GTH-22 GTH series: GTH-22, GTH-40, GTH-85, GTH-100, GTH-150, GTH-220, GTH-400、GTH-600、GTH-12M、GTH-12MH、GTH-12M、GTH-MH GTH series: GTH-22, GTH-40, GTH-85 ...

1. Low-voltage electrical appliances: refers to electrical appliances that play the role of on-off, maintenance, control or regulation in circuits with a rated voltage of 1200V and a rated voltage of 1500V and below. 2. Main electrical appliances: electrical appliances used to send control instructions in the automatic control system. 3. Fuse: ...

1. The transformer is grounded twice It refers to the grounding of the S2 terminal of the current transformer or the ground of the n terminal of the voltage transformer. As long as the single point is grounded, because the transformer is blocked between the second and the first, before grounding, the secondary winding has no potential connection with the ground, after grounding, the transformer ...