Ksd301Ab2 Series Frost Removal

The DYQ3 series is used a special liquid resistor to be connected in series to the rotor circuit of large and medium slip ring motor, the liquid resistor get to work when the motor starting and it can automatic, stepless and continuous removal during the preset time, then the motor can start smoothly under ideal starting current condition. Eventually the motor can accelerate balanced. This plays an important role in protection of motor, electric equipment£¬power system and saving electricity. As well as the well-designed of system starting, stop, error protection, liaison and display, making the liquid resistor starter have high degree of automation, small starting current (less than 1.3 times for rated current in general), can start successfully when power system have low voltage, and reducing the capacity of transformer remarkably. So DYQ3 series liquid resistor starter is the most ideal starting equipment for heavy load device such as: ball crusher, hoister, compressor, blower and water pump etc.

The DYQ3 series is used a special liquid resistor to be connected in series to the rotor circuit of large and medium slip ring motor, the liquid resistor get to work when the motor starting and it can automatic, stepless and continuous removal during the preset time, then the motor can start smoothly under ideal starting current condition. Eventually the motor can accelerate balanced. This plays an important role in protection of motor, electric equipment£¬power system and saving electricity. As well as the well-designed of system starting, stop, error protection, liaison and display, making the liquid resistor starter have high degree of automation, small starting current (less than 1.3 times for rated current in general), can start successfully when power system have low voltage, and reducing the capacity of transformer remarkably. So DYQ3 series liquid resistor starter is the most ideal starting equipment for heavy load device such as: ball crusher, hoister, compressor, blower and water pump etc.

The 3500/15 AC and DC Power Supplies are half-height modules and must be installed in designated slots on the left side of the rack. The 3500 rack can contain one or two power supplies with any combinations of AC and DC. Either supply can power a full rack.
When two power supplies are installed in a rack, the one in the lower
slot acts as the primary supply, and the other in the upper slot acts as the backup supply. If installed, the second supply is the backup for the primary one.
Removing or inserting either power supply module does not disrupt operation of the rack as long as a second power supply is installed.
The 3500/15 AC and DC Power Supplies accepts a wide range of input
voltages and converts them to voltages acceptable for use by other
3500 modules. The following power supplies are available with the 3500
Series Machinery Protection System:
Universal AC Power
High Voltage DC Power Supply
Low Voltage DC Power Supply

MyD S140 series uses fused deposition modeling (FDM) method, and FDM is the most typical method for intermediate or popular 3D printer. The printing method is to laminate thin layer of thermo plasticity material such as PLA or ABS by melting in the nozzle. The mechanism and control of MyD S140 is easier than the SLA, SLS and DLP method. The MyD S 140 3D Printer applied professional-level of L/M system and precise step motor, to maintain better stability and precision than other drive methods. Also, it ensures high quality prototype output. MyD S 140 enables easy output removal, by applying the removable bed. After finishing printing, the output can be removed and confirmed easily and quickly.

Brief Introduction of the Jacket Glass Reactor

The series of reactor kettles is my company according to the actual requirements of customers and the standard production of new double glass reactor with cylindrical glass reactor body, which absorb the international and domestic advantages of similar products, while bold and innovative, not only easy to use (one can easily move, , And the structure of innovative and practical, beautiful appearance generous, leading domestic; for modern chemistry, fine chemicals, bio-pharmaceuticals, new materials, such as the synthesis of experimental and production of the ideal equipment. Specific specifications from 1L to 200L optional.
The working principle of the series reactor: double-layer glass reactor inside the reaction material, but also can be vacuum to do the stirring reaction; sandwich can be connected to heat (water, water or hot oil or electric sets) to do heating or cooling; The reaction solution was controlled to evaporate and reflux.
Main Features of the Jacket Glass Reactor

1, The use of borosilicate glass (GG17 material), has excellent physical and chemical properties.
2, Speed mixing, smooth and reliable operation, torque, no spark.
3, PTFE components mechanical seal, proprietary technology, can maintain the market similar products, high vacuum (-0.095mpa or so), the leading domestic.
4, PTEE discharge valve, kettle body and lid are also customized according to customer requirements.
5, The reaction of the sandwich heating (cooling) solution can be completely removed after the reaction, no solution.
6, Regardless of refrigeration or heating, can be produced according to customer requirements matching products.
7, The overall structure of science, novel, practical, beautiful, leading domestic.

Ig module is damaged due to poor heat dissipation


The frequency converter makes a sudden sound during operation, and the external connection is burned. It is found that the IGBT module of the frequency converter is damaged after disassembly. Through the test of relevant boards, it is found that the IGBT trigger circuit is damaged, and other plates are normal. When removing the frequency converter board, it was found that there were a lot of oil and dust on the power board and current detection board. Turn on the fan of the heat sink of the frequency converter and see that the heat sink is also covered with oil and sundries, which completely blocks the heat dissipation channel of the frequency converter. It is inferred that the Ig module of the frequency converter is damaged due to poor heat dissipation.


Maintenance process: first, completely disassemble the frequency converter, remove the heat sink of the heat dissipation channel, clean the heat sink with air pressure gas, and clean all the internal structural parts and boards of the frequency converter. Install the IGBT module. When installing the IGBT module, install it in sequence according to the requirements of the module, with appropriate torque. Repair the trigger circuit, and then install other devices in turn. After installation, conduct static test. After the static test results are good, conduct power on test and load test. The on load test is qualified and the maintenance is completed successfully.


Experience summary: Based on the maintenance of several frequency converters in different models and different use environments, it is concluded that the main reason for the damage of frequency converter IGBT module is the poor use environment, which leads to the damage of electronic components on gate drive card and the blockage of heat dissipation channel of frequency converter* The easily damaged devices are voltage stabilizing tube and optocoupler. Check whether there is a problem in the driving circuit. Compare whether the resistance of each trigger terminal is consistent when power is off. The voltage waveform at the trigger end can be measured after power on. However, some frequency converters cannot be started without being installed into the module. At this time, a false load is connected in series at the p-end of the module to prevent the module from being burnt out due to touching the originator or other lines by mistake during inspection.

1.4 frequencies selectable for long distance and stacking installation
2.Double-precision digital display signal strength
3.Interruption time adjustable, user can adjust it according to environment and scenes
4.Intelligent heating function, effectively eliminate ice and frost, adapt to harsh environment
5.Progressively infrared signal processing functions (comparable with AGC function) to ensure the item work in wind,frost,snow,fog,moisture,direct sunlight and other bad weather etc.
6.Digital CPU control circuit to control the transmitter and receiver
7.Optional assisting equipment for alignment infrared beam, improving the efficiency
8.Wide range voltage design, power supply between AC/DC12-24V,easy for centralized power supply.
9.A variety of applications C relay outputs
10.Tamper switch, open if the cover is removed
11.Waterproof grade: IP65
12.Alignment angle horizontally±90ï¼?vertically±10

AT Series Converter



AT series converter / distributor primarily designed for use in the general signal conversion and isolation circuit;as 4 20mA,0 10V,Thermocouple(Type K, J, E, T), Rtd (Pt100 ), Load Cell, Potentiometer and AC Voltage/Current Complete models

This section slim design of the converter / distributor, in addition to providing two groups of signal output (Isolation) or 24V excitationsupply for the transmitter used, the switching power supply willprovide installation convenience. The top and designed power supply, input and output indicators and removable terminal blocks to facilitate on-site construction and working status view.

1.Aluminum housing with special electrophoresis processing, anti-oxidation surface is more wearable and durable.

2.Integrated and fully sealed structure and external circuit design, improves waterproof ability and installation efficiency.

3.Anti-tamper switch opens and triggers alarm if power cut off or end-cap removed.

4.Two different frequency channels, avoiding interference caused by adjacent rays.

5.Intelligent fuzzy analysis technology adopted to improve response speed and stablity.

6.Buzzer indication for well alignment.

7.Alarm method: any two adjacent beams breaks, helpful for preventing false alarms triggered by small animals and birds.

8.Adjustable response sensitivity.

9.Designed and recommended for protection of doors and windows.

10.High immunity to sunlight, rain, frost, fog, snow etc.

ModelAbi10-482Abi30-482Abi60-482Abi100-482Abi10-764Abi30-764Abi60-764Abi100-764
Outdoor range10m30m60m100m 10m30m60m100m
Height48cm76cm
Beams24
ModelAbi10-1086Abi30-1086Abi60-1086Abi100-1086Abi10-1408Abi30-1408Abi60-1408Abi100-1408
Outdoor range10m30m60m100m 10m30m60m100m
Height108cm140cm
Beams68
ModelAbi10-17210Abi30-17210Abi60-17210Abi100-17210Abi10-20412Abi30-20412Abi60-20412Abi100-20412
Outdoor range10m30m60m100m 10m30m60m100m
Height172cm204cm
Beams1012
Detection methodSimultaneous interruption of adjacent 2 infrared beams
Beam frequency2 channel ( a and b )
Power supplyDc11~18v
Current consumption50~90ma max
Response speed40msec
Alarm outputSwitch ouput signal, no, nc optional
Tamper switchNc, opens when cover removed
Operating temperature -25â?? to +55â??
Environment humidity95% max
Alignment angleHorizontal 180â°(â±90â°), vertical unadjustable
Protection degreeIp65
MaterialPc engineering plastic, aluminum housing