Beans have strong adaptability, the optimum temperature for growth is 20~25°C, and the optimum temperature for flowering and pod formation is 25~28°C, which is not resistant to low temperature. When the temperature is lower than 5°C, it is easily damaged. Therefore, winter seed beans, field tube is more critical.
1, nursery. In the past, the production of beans was mostly carried out by live broadcast. On the basis of fully protecting the roots from chilling damage, the seedlings were guaranteed to be strong; early sowing, early harvesting, and morning market. Nutrient seedlings are often used in production. It can also be used to raise seedlings in 50-hole trays. Seeds are planted 2~3 seeds per hole, water is irrigated, and temperature is controlled reasonably. It is necessary to avoid the phenomenon of "red roots" in seedling stage and prevent the lengthening. The seedling age is about 25 days.
2. Reasonable close planting. Because the growth of the bean seedlings is in a low temperature and low light environment. Photosynthesis is blocked, and the plant's own nutrition is limited, so it must not be too dense when planting, in order to prevent the leaves from blocking each other. Generally take 70 cm, 50 cm size ridge (or double high ridge) planting, plant spacing of about 30 cm, watering after planting, and then sputum and then cover the entire film.
3. Field management. In winter, the cover is strengthened, the heat is kept, the lighting is strengthened, and the film is often wiped off to make the light transmission good. It is best to hang the reflective curtain in the shed. In the management of fertilizer and water, from the transplanting to the flowering, the main control should be water control and cultivating, and water should be poured as little as possible. Before the flowering of the beans, 15 kg of ammonium sulfate should be applied. During the pod-forming period, the fertilizer is applied once every 10~15 days, and each time ammonium sulfate is applied 15~20 kg. Conditional, after flowering, sunny day, apply carbon dioxide gas fertilizer every morning, and properly ventilate after 2 hours. In the late growth stage of the beans, the plants are senescent, and the roots are aging. In order to prolong the pod formation, 0.2% potassium dihydrogen phosphate can be sprayed for foliar fertilization. After the beans are stretched, the vines should be erected in time, and the buds should be smashed and smeared in time. Try to avoid the light blocking each other between the leaves. When the plant height is 2~2.5 meters, pick the heart in time to promote pod formation. Pay attention to destroy the lower old leaves after each harvest.
4. Timely harvesting. Beans should be harvested in time to prevent premature aging, usually harvested 13 to 16 days after flowering. Planting beans in the greenhouse, due to the low temperature and high humidity environment, poor ventilation, and susceptibility to rust, should be timely prevented. You can also choose to put a small wind at noon on sunny days to reduce humidity.
Our company have German SEW Motor, Japan Mitsubishi Controller. Our own brand Hofic servo motor and controller. Chinese famous brand SEJ motor and Holip controller.
About our German SEW Motor and Japan Mitsubishi Controller: It is easy to find the ideal energy-efficient motor for your application at SEW. The series has a suitable design in its range for the globally applicable efficiency classes. Select the power and frequency within this motor design and you have already taken care of the most important selection criteria.All other motor options are of course available independently of the efficiency class. A comprehensive braking concept and cost-optimised built-in encoders ultimately complement the motor range. Comprehensive braking concept and combinations i.e. up to three different brake sizes per motor size featured in the range: Cost-optimised built-in encoders integrated into the motor. Motors for efficiency classes IE1 to IE4.Compact design saves space and costs. Future-proof, also as regards environmental protection (standards). Reduction in operating costs when using energy-efficient motors; our energy-efficient motors conform to the efficiency classes.
About servo High Speed Door Servo Control System: Our rolling gate servo control system is suitable for high speed and high usage soft and hard rolling gate. The whole system is in a small and light package, it has high torque and high operating speed, lower noise, high reliability, smooth and soft operating curves, it`s suitable for high speed and usage environment. The rolling curtain can be controlled by pull switch, push button, Bluetooth, ground radar, ground magnetic sensors. Operating Speed: 1M/s; Operating Width: ＜16 ㎡; Daily operating time: ＞2000 time; Rated voltage: 220v; Rated Output: 0.75 KW/1.5KW.
The system can operated via: 1) control box; 2) inching electronic control; 3) continuous automatic operation; 4) emergency stop; 5) single side operation box; 6) time delay; 7) ground radar and/or magnetic sensors. Please refer to Wiring Terminal for eternal connections.
System has fuse/safety wire shutdown switch for three-phase power protection, fuse/safety wire for operating circuit protection, and temperature sensing relay for motor protection.
Stroke Controller utilizes absolute value encoder. Connect the absolute value encoder and reducer via encoder`s axle, and fix the wings on to the reducer, than insert the aviation plug into plug receptacle.
The mounting screw for the control box must inspect regularly to prevent screw been getting loose and falling off. Check the internal and external wirings. Check and change the oil for the redactor on regular basis.
Precision: The system use Full closed-loop servo control and Double Encoder design. This is to ensure long operating life and to prevent overshooting during operating.
Stability: The system utilizes integrated design concept, in order to simplify internal wiring and prevent any function caused by wiring and terminal connections.
High Speed: Motor max speed is 2500 rpm; door max operating speed is 2 m/s.
Smooth: The torque servo system can adjust torque to the load automatically, and its speed curve mode step less speed regulating to ensure a smooth operation.
About SEJ motor and Holip controller: Three-phase asynchronous motor with magnetic brake has broad uses, It is suitable for various mechanical main drive and auxiliary drive, and it is also used for various required rapid stopping and correct positioning. The braking time within 0.2 second. Electric motor is added the DZM series direct current electromagnetic arrester by the basic series(Y series) electric motor.The protection class of electric motor part is IP44,the arrester part is IP23.if be applicable to bad environment can also make the arrester part into IP44,but customer have to put forward a special request while ordering,the manufactory can design a manufacturing exclusively. Its structure diagram is picture 1 and 2,picture 1 is the structure with hand release.Picture 2 is the structure without the hand release.Its operating principle BE, after being to make the retardation coil(6)to connect direct current power supply,because of the function of electromagnetic force,electromagnet(7)attract gag bit(5),and compress spring(24),make arrester disc(2)away from the friction surface of the gag bit(5)and shield(26)(the electrical motor can immediately operate normally).When the power supply cuts off after,the electromagnet(7)loses electromagnet force,the spring(24)releases the gag bit(5)and compress tightly to arrester disc(2),the arrester function,stop(the motor shaft)quickly,make electric motor shop turning to move,for the second time connect power supply will repeat above-mentioned action.
High Speed Door Motor And Control Box
High Speed Door Motor And Control Box,High Speed Door Motor,High Speed Door Servo Motor,Variable-Frequency Servo Motor
Shenzhen Hongfa Automatic Door Co., Ltd. , http://www.hongfadoor.com