World electrical safety standards: The requirements are in line with the world's electrical safety standards, such as the CE standard in Europe and the UL standard in the United States. These specifications specify the requirements for electrical safety functions, mechanical safety functions, EMC functions, etc. Machine...

Programmable manipulators (PLCs) have always played an important role in industrial field control. With the increase of the state's investment in the water supply profession, the level of automation of water plant operation has been continuously improved, and the use of PLC in the water supply profession has gradually increased. The touch screen is used with the PLC, so that the operation of the PLC ...

Problem example 1 On the telegram OC problem, measure the 5, 6, and 7 pins of N1 to be 2V. Pin 7 is not 0V for the alarm reason. 1. The "imaginary short" rule of the amplifier is still established, and the N1 chip is good to judge, but the fault is in the bias circuit. 2. Further analysis, at this moment the differential amplifier has ...

First, let's talk about PLC first About PLC, don't just see the PLC module, but a variety of PLC modules + host computer channel software to form a well-structured control systemPLC module is composed of microprocessor + memory + firmware + programming to complete the modular function. PLC control system ...

XDM Series Sport Control (Control Points: 24/32/48/60) Support basic motion control instructions, can realize two-axis linkage, interpolation, follow-up and other functions, can achieve 4-axis independent pulse output, ** multi-support 10-axis pulse output, together to support almost all of the standard PLC...

XC can be divided into multiple sub-series according to the incompatibility of functions, including XC1 (economy), XC2 (foundation), XC3 (standard), XC5 (enhanced) and their corresponding expansion modules, as well as special imitation ontology, activity control models, etc. Powerful function, complete variety, can be full ...

Xinjie PLC丨The condition is established, why is the corresponding coil not in place? There are two possible reasons for this: (1) The same coil may be used in multiple places to perform the double coil output, and the coil on the rear side will operate first when the double coil is output. （2 ...

Motion control has a significant period characteristic, it is a variety of high-tech generalization, used to bring industrial automation, office automation and home automation to a higher stage. Nowadays, motion control is mainly composed of variable frequency drive (VFD), electric motor, control ...

The usual inverter motor (hereinafter referred to as VFD) can only regulate the speed of the communication motor, and it can be open-loop or closed-loop, depending on the control method and VFD. This is the traditional V/F mode. The basic concept of servo is accurate, precise and fast positioning. Frequency conversion is servo ...

The frequency converter is a power converter in the motion control system. Today's motion control system includes many technical fields, and the general development trend is: communication drive, high-frequency power changer, digital, intelligent, and networked control. VFDs are power converters in motion control systems. ...

1. Common problem phenomena When the RS-485 port of the PLC is connected to the computer through the non-blocking PC/PPI cable, the connection between the PLC and the PLC, or the communication between the PLC and the inverter, touch screen, etc., the communication port is damaged, and the more common damage conditions are as follows: (1) R1 or R2 is burned ...

The most direct cause of cable problems is the breakdown due to the loss of insulation. First of all, there are: a. Overload operation. Long-term overload operation will increase the temperature of the cable, aging the insulation, resulting in breakdown of insulation and degradation of construction quality. b. Electrical: the construction process of the cable head does not meet the requirements.

1. On the premise of satisfying the production equipment and process requirements, the acceleration or deceleration time should be increased as much as possible, and then the overcurrent generation in the process of acceleration or deceleration can be avoided. 2. Check whether the inverter, motor, and production equipment are well matched, whether the transmission part is sensitive, and whether the material is ...

Because the current at the input and output ends of the inverter contains high-frequency components, the leakage current formed by the high-frequency components when the inverter is driven is greater than that when the grid power supply is supplied. Because there are many varieties of circuit breakers, in some cases, even the inverter wires and motors ...

When we select the right inverter brand, we need to recognize whether it can help enterprises better manage the risks and costs caused by potential safety, security and downtime accidents. Safety: Reverse arc drives assist users in meeting stringent reverse arc specifications. These inverters (Variabl ...

1. Power switching and maintenance: There is a circuit breaker in the PLC cabinet, which is connected to the incoming power supply. In addition to making and disconnecting circuits, circuits can also be maintained for short circuits and overloads. Cut off the power supply during repairs. 2. Start and stop control function: The panel of the PLC inverter cabinet is equipped with a man-machine interface, and the inverter start and stop button ...

With the continuous development of industrial automation, PLC is widely used in industrial control professions. No matter how strong the PLC product is, it often fails to work normally. All kinds of brands of PLC have the function of self-diagnosis, but the skill of PLC repair is that when the PLC is abnormal, the function should be fully used.

1. Check the full-load power supply of the inverter (Variable-frequency Drive (VFD). 1. Ground the terminal strip of the VFD. 2. Type the switching power supply of VFD into the terminal and receive it from the switching power supply through the power switch of the leakage protector. 3. ...

There are many novices who are not familiar with the false load about the maintenance inverter, and the maintenance inverter uses the false load to keep many of their modules, because the maintenance novice generally does not know how to do this, and now the electric light is on to clarify that the module is going to be broken. A dummy load is a load with a resistor of several hundred ohms ( ...

The motor soft starter is a new type of starting equipment designed and produced by using power electronics skills, microprocessing skills and modern control theory. The motor soft starter can effectively limit the starting current of the AC asynchronous motor when starting, and can be widely used in wind ...

After overhauling and confirming that all connections of the system are correct, power on the relevant modules until the card indicator shows normal. The initiation process of the system after the scheduled repair is as follows: (1) Power supply. Turn on the power supply equipment (including the UPS...)