Domestic rapid door on the encoder choice now primarily with rotary incremental value encoder to turn the output pulse, through counting device to calculate its position, when the encoder or power failure, rely on counting device's internal memory to remember the location. So, after the power outage, there cannot be any movement, encoder when calls work, in the process of the encoder output pulse, also can't be a pulse interference and loss, otherwise, the counting equipment computation and memory of zero will be offset, and the amount of the offset is don't know, can only know wrong after the production results. And there's a rotating single ring absolute encoder, to measure the light code disc in rotation of the scribed line, in order to get the only encoding, when more than 360 degree rotation, code back to the origin, so it doesn't conform to the principle of absolute coding only, the encoder can only be used to rotate 360 degrees within the scope of the measure, known as the single ring absolute encoder, it in the application of rapid door can only rely on control system to gauge its laps, but in the case of power failure and rotating fundamental drive incremental type is nothing else. So now all the fast door as long as it is with a rotating coder can be totally setting not a manufacturer.
bast company, with a circle of more absolute optical encoder works on the principle of the clock and watch gear machinery, when the rotating center code through gear drive another set of encoder (or multiple sets of gear, multiple sets of encoder), on the basis of the lap coding number of laps to add code, to enlarge the measuring range of the encoder, the absolute encoder is called a coil more absolute encoder, it is also determined by mechanical position coding, each location coding not only repeat, without memory.
Another advantage is more than the circle encoder at the same time, because of the large measurement range actually use more rich, often unnecessarily difficult find when installation, such as its starting point will be a middle position, and greatly simplifies the installation and debugging difficulty, but now BaiEnBo absolute encoder can only be used by the company has been used in "ERADOORS" brand door machine system, control system does not support other or controllable programmer (PLC).
The current position：
19952701625
