Industry News

Teach you how to distinguish between fast doors and high-speed doors at a glance

2021-10-25
The high-speed door is indeed an upgraded version of the fast door. Although the components and working principle of the two have not undergone essential changes, there is a qualitative improvement in materials and technology, so in terms of performance, price, working principle, and application scenarios There are still some differences.
Fast doors include fast rolling doors and fast lifting doors, the lifting speed is between 0.6-1.5m/s, adjustable; with heat preservation, cold preservation, insect proof, wind proof, dust proof, sound insulation, fire prevention, odor proof, lighting and many other functions, Widely used in air-conditioned workshops and clean plants in various industries such as food, chemistry, textiles, electronics, printing, supermarkets, refrigeration, assembly, precision machinery, logistics, automobiles, cigarettes, and storage.
working principle
The brake decelerating motor for fast doors requires fast braking and low noise. (PS: There is also a new type of fast door motor on the market, called industrial fast door. This is a brand-new control method. When the operation is stopped, the brake is not required to brake, and the noise is further reduced).
A door opening sensor provides a trigger signal to the control system. The control system sends a command to the inverter according to the current position of the high-speed rolling door, starts the drive motor to make the door curtain rise quickly, and the vehicle pedestrian passes through the door curtain automatically descends, closing the channel until the next door opening signal opens again .
High-speed doors mainly refer to fast roller shutters and high-speed roller shutters, the lifting speed is 0.6-2.5m/s, adjustable. The performance and application scenarios of fast doors are suitable for high-speed doors, and will only be better, but because of the cost, generally only relatively large-scale food industry, which pays more attention to food safety, will choose high-speed doors, and generally will choose fast doors (The local boss just pretends that I didn't say it).
working principle
The principle of the high-speed door from sensor to control system has not undergone essential changes, but more sophisticated new technologies are adopted in the control system and positioning system, whether it is better in positioning or noise control.
In terms of programming, the control system determines that the deceleration distance of the rolling door is not adjusted according to the actual speed after the fast rolling shutter is opened, which has a certain impact on the brake life of the motor and the limit of the imported fast rolling shutter.
Mechanical positioning: This positioning method is similar to that of steel rolling gates. The advantages are high speed and low requirements on the controller.
Rotary encoder positioning: The advantage of this method is accurate positioning. Taking the encoder with a resolution of 1024 as an example, a 3 meter high door is divided into nearly 9,000 points. Theoretically, the accuracy can reach 0.3mm and the height setting is simple. , The general design of the fast door control system has only one button to set the height arbitrarily, which is very practical. The disadvantage is that the rotary encoder itself is relatively expensive, the precision parts are more delicate, and it needs to be used in conjunction with the PLC program.

By comparing the performance, price, working principle, application scenarios and other aspects between the two, we should have a deeper understanding of fast doors and high-speed doors. When you see different doors in the future, you can roughly determine which door to use based on its operating speed, working principle, or cost.