1. Air opening: a total air switch, which is the power control of the entire cabinet. I believe that every cabinet must have one thing.
2. PLC: This should be selected according to the needs of the project. For example, if the project is small, it can be an integrated PLC, but if the project is large, it may need modules, card types, and redundancy (that is, two sets of alternate use).
3. 24VDC power supply: a 24VDC switching power supply, most PLCs have their own 24VDC power supply, according to whether it can be really needed to determine whether this switching power supply can be wanted.
4. Relay: Generally, the PLC can directly send the command to the control back, but it may also be directly sent by the relay first. For example, if the output port of your PLC is 24VDC live, but the diagram drawn in your control return needs the node supplied by the PLC is 220VAC, then you must add a relay to the PLC output port, that is, the relay action when the command is announced, but then let the node of the control back be connected to the normally open or normally closed point of the relay. It is also a matter of choosing whether or not the relay can be used according to the environment.
5. Terminals: This must be an indispensable thing in every cabinet, and equipment can be set up according to the number of signals. If it's just a pure PLC control cabinet, the foundation needs these things, and if you need other things in your control cabinet, it depends on the environment. For example, you may need to supply power to the exterior or small control box of some sites, or you may need to increase the number of empty switches. Maybe you want a PLC to connect to a host computer, or maybe you need to add an interchange machine or something. It depends on the environment.
The PLC control cabinet can complete the automatic control of equipment and process, complete the perfect collection function, and the function is unchanged, expandable, strong anti-interference and other characteristics, which is the focus and soul of modern industry. PLC control cabinets, frequency conversion cabinets, etc. can be tailored according to user needs to meet user requirements, and can be matched with man-machine interface touch screen to achieve the policy of easy operation. The equipment can also communicate and negotiate data transmission with DCS bus host computer, modbus, profibus, etc.; Industrial computer, Ethernet, etc. to complete the control and.
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Xinjie PLC inverter visual system
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 ...
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Diagram of the wiring of the servo motor of Xinjie
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The safety standard of the inverter - Xinjie
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...
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How to properly ground the PLC - Xinjie PLC
The grounding policy is nothing more than to avoid disturbance for safety, and the policy of grounding to PLC must not be attached to the disturbance at the power supply and input and output terminals, so the accurate grounding system is one of the primary methods for the PLC control system to resist electromagnetic disturbance. There are floating and direct grounding formations.
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The inverter operates normally in a humid environment
1. Look inside the electrical cabinet, for example, to see if there are small animals and their droppings, and whether there are condensation or water marks. If the dust in the cabinet is large, please clear the external radiator of the inverter.
2. Assuming that the humidity is relatively large, there are condensation or water marks, please open the cabinet door first, ventilate and dehumidify, you can use electric fans, etc.
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Inverter protection and display function - Xinjie
1. Maintenance of the inverter itself:
Instantaneous overcurrent, overvoltage, undervoltage, overload, short circuit to ground, abnormal control circuit, then for the maintenance of the inverter itself, the overcurrent, overvoltage, undervoltage and so on set the limit value, when the inverter is running, if ...
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The reason for the abnormal alarm in PLC - Xinjie
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.
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The difference between servo and frequency conversion motors - Xinjie
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 ...
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Common faults of wires and cables - Xinjie
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.
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The Xinjie touch screen screen production system includes the project
The creation of the touch screen screen is done by TouchWin editing tool software. Each screen includes each control menu and video window, and the home page can be written by the relevant units to write the advertising screen welcome speech or system model description. The system mainly includes the following items:
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Learn PLC programming skills - Xinjie PLC
1. When the PLC and the host computer (or touch screen) form a monitoring system, there are many times on the screen that there are "manual", "active" and other control modes (generally more than one). In the program, you can use the "MOV" command. For example, when selecting "manual", the constant 1MOV will be ...
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Precautions for PLC circuit debugging - Xinjie
1. For the switching input and output circuits, pay attention to the consistency criterion of maintaining the situation; The positive logic criterion is usually used, that is, when the input and output are live, it is the "ON" state and the data value is "1"; On the other hand, when the input and output are powered off, it is in the "OFF" state and the data value is "0". Such...
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Xinjie inverter control mode
The output voltage of low-voltage general frequency conversion is 380-650V, the output power is 0.75-400kW, and the working frequency is 0-400Hz. Its control methods have gone through the following four generations.
1U/f=C Sine Pulse Width Modulation (SPWM) Control Method ...
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The relationship between PLC and inverter - Xinjie
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 ...
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The way the PLC controller works - Xinjie
Although many relays, timers and counters are often used in the ladder diagram programs used by PLCs, PLC does not have these hardware physically, but uses memory and program programming methods to do logic control and editing, and connects external mechanical devices to make physical devices through output components.
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Xinjie developed professional solutions for sealing lines
Introduction to the glass sealing industry
As a relatively old industry, the vitality of the glass industry has further burst out in the modern society, due to the social development and the improvement of people's aesthetics, the demand for glass in all walks of life is also increasing, which is also more abundant.
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Xinjie PLC failure and solution
Xinjie PLC conditions are 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 when the double coil is output, the coil on the rear side will operate first.
（2） ...
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Advantages of Xinjie XDM series motion control PLC
Xinjie XDM series PLC, XDM is the sports control PLC in the XD series, now has the following types: XDM-24T4-E/C, XDM-32T4-E/C, XDM-60T4-E/C, XDM-60T10-E/C.
The XDM series has the following ...
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Common problems with Xinjie touch screen
Common problems with Xinjie touch screen
Poor contact
Touch screen installation problemRemove the screen from the control cabinet and perform an operational test. If there is no problem with the operation, i.e. the installation problem causes the installation size to be re-measured, do not install it too tightly so as not to squeeze the touchpad.
Correspondence...
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PLC communication interface failure and solution——Xinjie
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 ...
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