The DCS series DC stabilized and current stabilized power supply is a type of stabilized and current stabilized power supply that is pre stabilized by thyristors and adjusted in series. The output voltage is continuously adjustable, and it automatically converts high-precision DC power supply with stable voltage and current. The output voltage of the circuit can be adjusted from 0V, and can be selected arbitrarily within the rated range. The overvoltage protection point can also be selected arbitrarily. In the steady current state, the steady current output current can be adjusted within the rated range.
This instrument can be widely used for DC motor detection, debugging, aging, production, factories, schools, research institutes, and various departments of the national economy.
In order to improve the reliability and user safety of the power supply, as well as the short-circuit protection function, a load short circuit occurs when the power supply is operating in a stable current state and the voltage output is below 2V, with the output current being the set stable current value.
1. Output voltage: 50V Accuracy: 2%
2. Output current: 30A Accuracy: 2%
3. Power effect: 5 ‰
4. Load effect: 5 ‰
5. Periodic and random drift voltage: ≤ 200mV
6. Power supply: AC220V ± 22V, 50Hz ± 2Hz (system working power supply)
7. Usage conditions: Environmental temperature (0~40)oC Relative humidity ≤ 90% R
1.Tension and compression sensor:101BS-1000kg (Yongzheng)
2.Grating ruler:550mm resolution: 5 μ m output signal: 5V TTL square wave, differential output (long line drive), 24V HTL square wave, 24V NPN collector open circuit operating temperature: 0-40 ° C
1. The equipment shall be painted according to the color palette provided by the factory, and the color tone of the equipment shall be consistent.
2. In order to facilitate maintenance and upkeep of the equipment, the safety cover that is frequently opened and closed can be easily removed.
3. The height, control panel height, and display screen height are designed ergonomically.
4. Uniform appearance standards and consistent style
The mechanical structure mainly includes measurement and control cabinets, dynamometers and loads, testing platforms, couplings, fixtures, safety protection, hardware accessories, etc
1. Cabinet: 19 inch ICT sleeper cabinet. The main skeleton is made of aluminum profiles and sheet metal, and the surface of the cabinet is sprayed with plastic. Integrated installation of electrical parameter meter, acquisition module, industrial computer, keyboard drawer, etc. inside the cabinet.
2. Panels: nameplate panel, instrument panel, control panel, blind panel, etc.
3. Electrical partitions: 2 electrical partitions, servo drives, contactors, etc.
Screws, nuts, etc.
The system provides two sets of operation functions: manual and automatic.
2. The experimental system is constructed using industrial computers, with mature and reliable software and a Chinese interface for operation.
3. It has password permission protection.
4. The experimental software interface has exclusivity, and testers cannot access other application software interfaces
5. The user interface is user-friendly, easy to operate, and has manual, automatic, fixed-point, and durability testing methods, which means that the load can be manually, automatically, and fixed-point adjusted. The test data can be displayed on both instruments and computers, automatically generating test reports, conducting qualification judgments, and automatically protecting test results.
6. Have relevant prompt areas (operation instructions, error prompts, etc.)
7. Display area with relevant curves
8. Display area with information such as current operator name, time, tested product model and number
1. It can automatically control the test motor to collect test data, perform data processing and parameter calculation, and generate and print test reports
2. The measurement data is automatically synchronized and recorded by the computer, ensuring the simultaneity of the test data, eliminating errors caused by manual reading of the meter, and greatly improving the efficiency of the experiment
3. High measurement accuracy and good repeatability
The motor number consists of model+year (2 digits)+month (2 digits)+day (2 digits)+serial number (4 digits). In automatic mode, simply connect the tested product as required, click start, and the experiment will be automatically completed The motor model can be freely added or deleted, which means that countless types of motors can be tested on the system as long as the torque is appropriate.
5. The unique automatic recording function of experimental data, which means that the software automatically records the test results when the test conditions are met, avoids the problem of difficulty in reading data due to unstable voltage during the test, and greatly shortens the time for obtaining data.
6. Standardize the testing process to avoid artificially changing the testing requirements
The 7 test software automatically converts the test results into standard data, which is beneficial for comparing the test results
The various parameters and test result data of the 8 motors are saved in the test server database in Excel format
The test software automatically determines whether the test results are qualified based on the motor reference data.
The 10 test results are automatically saved, and the test data for unqualified motors can be selected to be saved or not saved.
The layout format of the test report can be freely prepared and modified by relevant technical personnel
12. High degree of automation, saving time and manpower, greatly improving experimental efficiency, and reducing labor intensity
13 has operation guidance prompts and multiple protection functions (especially anti misoperation function)
14 is equipped with a USB interface, making it easy to transfer test reports and data to mobile storage media or connect to a printer
15 Check Xuan: You can search for the test data of each initial motor by motor model and number, and print it after completion.
16 Statistics: The qualification rate, unqualified parameter ratio histogram, pie chart, etc. of the initial test motor can be calculated by day, month, quarter, etc., and the results can be printed. (Easy to control product quality)
5.2.2.2Test interface
1.Design ideas and concepts (algorithms and core technologies)
1. Data measurement: Data measurement mainly completes the measurement of various parameters. According to the difference in measurement methods and purposes, it is divided into measurements related to control parameters such as no-load, load, and locked rotor, as well as measurements of other general parameters. These data measurements are carried out using specialized equipment/instruments, and then exchanged and integrated into the system through communication.
2. Data processing: Data processing is an essential function of measurement and control systems. It organically combines independent and unrelated parameters to form a complete system, transforming unrelated data into interrelated and influential data.
3 Alarm: When the measured parameters reach the alarm value, the system prompts the user through methods such as lighting and font color reversal that the system has entered an alarm state. The alarm parameters include the qualification of the load current, load speed, and load torque in both directions of the motor, and provide audible and visual alarms.
1. Data display: The system provides three ways to display the measured data and the trend of data changes. Each dynamic measurement data is displayed in numerical form, real-time curves are used to reflect the recent changes in real-time data, and historical curves are used to reflect the trend of static data changes at various levels in the past
5. Individual testing refers to testing a single motor by setting the motor power supply to a constant voltage working state, where the voltage is constant.
6. During testing, opening and restoring can be used as one testing cycle for multi cycle testing, and the qualification of any cycle test result can be judged. The interface displays the test process status values, test results, and current and push-pull force curves.
2.Functional composition analysis
1. Empty load: divided into push/pull empty load test; Record a set of data, including voltage, current, input power, line speed, etc.
2. Load: divided into push out load (push), pull back load (push), pull out load (pull), pull back load (pull) testing; Record a set of data, including voltage, current, input power, push-pull force, linear velocity, output power, efficiency, etc.
3. Blockage: divided into static pushing and static pulling tests; Record a set of data, including voltage, current, input power, push-pull force, displacement, etc.
3.rendering
No-Load Test
Load Testing
lock rotor test
5.2.2.3Settings interface
1.Design ideas and concepts
1. Experimental process and condition parameter setting: The experimental process and condition parameter setting are to achieve the automatic control function of the system. A set of experimental process data is manually set in advance, and the system will automatically complete a complete experiment based on this set of experimental process data. If no abnormal situations occur during this experiment, no manual intervention is required.
2. Management of measurement parameters: The management of measurement parameters mainly completes the setting of measurement parameters, including the number of measurement parameters, the name, unit, range, etc. of each measurement parameter.
4. Management of alarm parameters: mainly set which parameters need to be alarmed, as well as the alarm value and protection value of each alarm parameter, and what the corresponding action is.
2.Functional composition and analysis
The upper and lower limits of alarm conditions and monitoring parameters can be freely set. When an abnormality occurs, the system displays the corresponding fault mode on the computer interface and can be linked according to the pre-set settings, including displaying messages, sound and light alarms, emergency stops, etc
3Parameter setting interface
3.1 Empty load parameter setting
3.2Load parameter setting
3.3Locking parameter setting
5.2.2.4Report interface
1.Design ideas and concepts
1. It has data evaluation function, which can easily display and analyze measurement data
2. The software system has the function of automatic data storage
3. The software system automatically generates test record files and important event record files during the test
2.Report interface rendering
Data query interface
Data statistics result interface
5.2.3database
1.Design ideas and concepts
1. Data storage: System data (system setting parameter data and measurement data) will be stored in the form of a database. In order to reduce system maintenance and usage costs, as well as meet the usage habits of most people, the system will use Microsoft EXCEL as the database
2. Data Conversion: The system also provides a data conversion tool that can convert data files saved in the database into Excel files
3. Data retrieval: The system provides a comprehensive logging function, which can fully record and reflect the environmental conditions at the time of the experiment
5.2.4.Functional composition and analysis
1. The software system has both local experimental database management system and network database management functions.
2. Software functions
5.2.4.1 Manual testing
5.2.4.2 Automatic testing
Chapter VI Technical process requirements for on-site integrated design (on-site layout)
6.1Overall technical requirements
6.1.1On site integration design ideas and concepts
Items that meet the common requirements of national standards and specifications related to the construction of test stations and factories, including but not limited to the contents listed in this article:
·Electrical performance;
·Mechanical and structural performance;
·Environmental adaptability performance;
·Radio interference and electrical interference;
·Magnetic field influence;
·Reliability and safety;
·Noise
·Other performance related requirements
6.1.2Overview of on-site integrated design and construction
The on-site integration adopts a measurement and control cabinet placed adjacent to a DC stabilized power supply
6.1.3On site integrated design overall testing (process) capability
Site Layout
Chapter 7 Introduction to Project Homework Process Management
7.1 Project requirement process control
7.1.1 Project Requirement Research and Control
7.1.2 Project Scope Definition
7.1.3 Project requirement change control
7.1.4 Project Requirements Review and Control
7.2 Project development process control
7.2.1 Project Proposal Review
7.2.2 Design (Development) Review
7.3 Project manufacturing process flow control
7.3.1 Assembly process control
7.3.2Debugging process control
1. The supplier is responsible for the installation and commissioning of the equipment at the user's location, and is fully responsible for the correctness of the equipment installation and commissioning.
Before installing and debugging the equipment, the supplier must sign a safety agreement with the user, and the supplier is responsible for the safety work of installation and debugging.
3. The supplier is fully responsible for lifting the equipment into place according to the lifting conditions at the installation site; When the installation of equipment exceeds the lifting equipment installed on site in the workshop, the supplier is responsible for renting a crane to lift the equipment and tools.
4. The supplier is responsible for connecting the equipment to water, electricity, oil, and gas pipelines.
5. The supplier is responsible for the installation, debugging, acceptance, and trial operation of the equipment. The special tools and testing instruments required during the debugging process shall be provided by the supplier.
6. The expenses incurred by the supplier's personnel during installation and commissioning shall be borne by the supplier.
7. If the installation and debugging personnel of the supplier are incompetent during the installation process, the user has the right to request a replacement of the installation personnel.
8. Any equipment damage or non-conforming components that occur during the installation process shall be promptly replaced and updated by the supplier free of charge.
9. The user shall provide the required public power (electricity, water, compressed air) according to the layout plan requirements.
7.3.3Experimental process control
7.3.4Pre acceptance process control in the factory
The equipment acceptance supplier shall provide the user with the confirmed equipment acceptance methods, steps, tools used, and standards adopted by both parties, as well as provide proof of the legality of the software involved and used in the equipment.
Equipment acceptance is divided into two steps: pre acceptance and final acceptance. Pre acceptance is conducted at the supplier's site, while final acceptance is conducted at the user's site.
The pre acceptance of the equipment is carried out at the supplier's site. One month before the equipment is shipped, the supplier invites two relevant personnel from the user to go to the supplier for equipment pre acceptance. Conduct pre acceptance of the basic parameters and performance of the equipment item by item according to the content specified in the technical agreement.
During the pre acceptance period of the equipment, the supplier must provide necessary support to the user. The costs incurred during pre acceptance shall be borne by the supplier, including insurance, travel expenses, and accommodation fees for the user's staff to visit the supplier's premises.
The acceptance content shall at least include:
1. Equipment appearance inspection, functional component configuration, and safety measures.
2. Power on the equipment and check all operating parameters to ensure there are no abnormal noises, electrical leaks, water leaks, or air leaks.
3. Review of equipment documents, including calibration certificates.
4. Check the consistency between the equipment and technical documents.
7.3.5Pre acceptance
After all project inspections and tests are completed and qualified, a pre acceptance report shall be written and signed by both parties. All projects, including those that cannot be pre accepted and those that pass pre acceptance, will be re inspected and confirmed during final acceptance, and the final acceptance shall prevail.
7.3.6Final acceptance
The final acceptance of the equipment is carried out at the user's site. The final acceptance of the test bench and its ancillary equipment shall be carried out at the user's site. After the installation and commissioning of the bench, it shall be loaded and continuously operated for 24 hours without any faults, and then handed over to the user for trial operation. After that, the final acceptance shall be carried out according to the technical agreement.
The technical liaison, installation, debugging, and training during the final acceptance period are the responsibility of the supplier, with the cooperation of the user.
7.3.7Basis for final acceptance
1) The operation status of the equipment.
2) Supplier's equipment factory inspection standards and relevant international standards.
3) The contract, technical agreement, design confirmation memorandum, and other technical documents recognized by both parties.
4) The quality certification documents provided by the supplier along with the equipment, the legal certificates of the software used, and the factory inspection records of the equipment.
7.3.8Final acceptance criteria
1) The scope of supply shall be consistent with the contract and technical agreement.
2) All devices shall be tested item by item according to the technical agreement to verify that they meet the requirements of the technical agreement.
3) The equipment provided by the supplier shall meet all the terms and requirements of the technical agreement and contract.
4) The final acceptance training effect inspection is qualified. After all project inspections and tests are completed, a final acceptance report shall be written, signed and confirmed by representatives of both parties, and the warranty period shall begin.
7.3.9Acceptance deadline
The equipment shall arrive at the user's site within 4 months from the effective date of signing the test bench contract, and all goods shall be delivered (subject to the delivery date specified in the contract or the actual delivery date). Installation and commissioning shall be completed within 1 month to meet the quality requirements stipulated in the contract.
1. Loading and unloading requirements
2. Installation environment requirements
3. Third party testing report (inspection report), factory certificate of conformity
7.3.10.Shipping logistics and transportation control
The supplied goods must be packaged securely and transported in sturdy wooden boxes. Measures such as moisture-proof, moisture-proof, rainproof, shockproof, and rust proof should be taken according to the different shapes and characteristics of the goods, so that they can withstand multiple handling, loading and unloading, and long-distance transportation, to ensure that the goods can be safely transported to the destination specified in the contract without damage or erosion. Suppliers shall be responsible for rust, damage, and injury caused by improper packaging. If the weight of the goods packaging reaches or exceeds 2 tons, the supplier shall mark both sides of the packaging with internationally recognized transportation markings, such as "center of gravity" and "lifting point", for loading and unloading purposes. According to the characteristics of the goods and different transportation requirements, suppliers should use non fading markings such as "Handle with Care", "This Side Up", "Keep Dry", other internationally applicable markings, and marks.
7.4Customer on-site process control
7.4.1 Pre sales scheduling control
7.4.2On site unboxing control
When submitting experimental equipment to users, the integrity of the equipment components should be ensured, and the system should be accompanied by a detailed list; Random attachments (such as power cables, system CDs, etc.) are complete and have a list; Provide system software CDs and technical materials, including user manuals, installation and maintenance manuals for each major component, detailed instructions for system software and hardware operating programs, and main functional modules of the software.
7.4.3 On site installation control
After the equipment arrives at the user's location, the user should notify the supplier in writing. The supplier should send engineering and technical personnel to the user's location within 10 days after receiving the notification to jointly open the box and count the goods with the user.
The supplier is responsible, but there are user personnel on site to jointly confirm the status of the purchased goods.
7.4.4On site debugging and control
The supplier is fully responsible for the manufacturing, transportation, installation, commissioning, acceptance, technical training, and after-sales service of the equipment. The supplier is fully responsible for the quality and delivery time of the equipment. Both parties jointly inspect the products. Any costs incurred due to delays caused by the supplier shall be borne entirely by the supplier.
If the equipment provided by the supplier involves outsourced goods and the technical quality of the goods is critical, the supplier should ensure that they can receive technical support and provide free on-site guidance and training for installation and use.
When the equipment provided by the supplier needs to be inspected, tested, and accepted by the government or industry regulatory department where the user's construction project is located, the supplier shall complete or assist the user in completing the required work and services free of charge.
7.4.5On site test control
7.4.6On site acceptance control
7.4.7On site training control
1. The training will be conducted at the user's factory, with 2 participants and the training time will be agreed upon by both parties.
2. The supplier is responsible for dispatching experienced engineers to provide technical guidance and training at the user's equipment usage site, so that the user's operators have the ability to proficiently use the equipment and correctly select parameters, and the user's mechanical and electrical maintenance personnel have the ability to proficiently troubleshoot, maintain, and repair the equipment.
3. Training content
Working principle of equipment
Software and hardware operation usage
Experimental data processing
Equipment safety training
Training on daily maintenance and upkeep of equipment
The specific training content includes but is not limited to the above.
4.Review of Training Results
After completing the acceptance training, participants should be able to operate independently, use equipment, test software, and perform subsequent data processing normally. Capable of equipment calibration and inspection, setting equipment operating parameters, developing and implementing automatic testing programs, maintaining equipment, handling and repairing general equipment malfunctions.
The training is conducted through practical assessment, and the supplier needs to cooperate with the user to complete the training assessment.
7.5 Main material development and procurement (supply chain) process control
7.5.1Supplier control
1. The supplier should be a company with a good reputation in the field, reaching a considerable scale, and provide information such as company business introduction, office or agent contact information, number of service personnel, and contact persons.
2. The products provided by the supplier should be produced (or designed, commissioned for production) and integrated by themselves. If there are key components produced by other companies in the entire system, the supplier should provide authorization from the manufacturer of the product and proof of product quality assurance.
3. The equipment provided by the supplier must be complete, brand new, and fully functional, meeting the technical requirements raised by the user. The supplier shall be responsible for any quality and economic losses caused by the inability to meet the technical parameters of the product.
4. The equipment provided by the supplier should meet the requirements of test integrity, and the equipment and accessories that need to be solved by the supplier themselves should be listed in the bidding documents.
5. The equipment provided by the supplier needs to have a software system that is easy to operate and can achieve data recording and processing functions, and provide no less than three screenshots of the software interface (including screenshots of the automatic testing program interface).
6. The supplier needs to provide detailed technical solutions for the equipment, installation plans for required water, electricity, and gas, and equipment placement, installation, and connection plans based on the existing testing space.
7. The supplier needs to provide the brand of key components and detailed technical solutions for the equipment.
8. Suppliers need to provide regulations on the price calculation method for key components after the warranty period (including all major components).
9. The supplier is responsible for transporting the equipment to the designated location, and is fully responsible for any vehicles and tools that may be needed during transportation and on-site unloading.
10. Suppliers should have a good reputation and refuse to bid for enterprises or individuals listed in the government's record of misconduct.
11. The supplier is responsible for the design, manufacturing, integration, transportation, installation, commissioning, acceptance, and after-sales service of the entire equipment, and is fully responsible for the quality and delivery time, implementing a turnkey project.
12. Provide on-site debugging photos, acceptance reports, and reports of similar product usage cases.