增量式旋轉編碼器

增量式旋轉編碼器會在軸每轉動一圈的過程中，提供一定數量的脈衝。它通過計數一個時間段內的脈衝數來測量速度。要計算所經過的角度或距離，需要從參考點開始對脈衝進行計數。

雙通道正交輸出編碼器具有兩個相位差為 90°的信號輸出。這使控制器可以確定旋轉方向並執行雙向定位任務。

此外，三通道增量式編碼器具有第三個信號通道（稱為「零位」信號或參考信號），它為每圈提供一個單獨的脈衝。

The heavy-duty incremental rotary encoders from Pepperl+Fuchs are designed to work reliably in harsh conditions—for example, in outdoor process plants or in construction machinery in dusty, dirty environments. Due to their robust design, the heavy-duty rotary encoders easily withstand heat, cold, dirt, constant vibrations, strong shocks or electromagnetic interference. As a result, they deliver precise measurement results at all times. This makes them the ideal solution, e.g., for speed feedback in large asynchronous motors.

Whether in wind turbines near the coast or on the high seas—the offshore incremental rotary encoders from Pepperl+Fuchs were specifically developed for use in maritime applications and in particularly cold regions. With a temperature range of -40 °C to +60 °C, the offshore rotary encoders withstand strong temperature fluctuations. Their seawater-resistant housing protects them from corrosion. At the same time, the robust sensor design with special housing coating guarantees a long service life. In this way, the offshore rotary encoders ensure high availability of wind turbines, gantry cranes or spreaders, which are often difficult to access and therefore require a high level of maintenance.

Sensor technology that is used in hazardous areas needs to fulfill special requirements. The incremental rotary encoders for these areas are therefore available with EU-type examination certificates up to Zone 1, including flameproof enclosure (Ex d) and intrinsically safe (Ex i) types of protection. Their robust housing design increases service life and reduces maintenance work. Whether in the chemical industry, in wastewater treatment plants or in power plants: Wherever explosive atmospheres can form, incremental rotary encoders from Pepperl+Fuchs ensure safe process operations.

For machines that require safe functionality in accordance with the Machinery Directive 2006/42/EC, Pepperl+Fuchs offers incremental rotary encoders with certification up to SIL 3/PL e. They are, for example, used in machine tools, overhead conveyors or packaging machines. Here, the sensors monitor motion sequences, ensure safe speeds in the event of malfunctions, and throttle speeds down to a standstill. In this way, the safety rotary encoders prevent hazards for the operating personnel as well as damage to the machines.

Particularly high hygiene requirements are placed on sensors used in the pharmaceutical, chemical or food industries. For this reason, Pepperl+Fuchs has developed an incremental rotary encoder with a hygienic design: The sensor's stainless steel housing is designed to meet hygiene requirements and ensure microbiological safety in accordance with EHEDG. In addition, the rotary encoder is insensitive to aggressive chemical cleaning agents and disinfectants. Due to its resistance to thermal shock, it can be easily cleaned with high-pressure equipment. These features shorten cleaning times and therefore increase machine availability.