Quantum Devices is a vertically integrated encoder manufacturer providing high quality rotary encoders to OEMS in many different industries. See our detailed technical comparison of encoder products for more information. Quantum Devices rotary encoders perform better than the competition because of important mechanical and electrical differences in our design and component quality. Stuck on an encoder problem? Our engineers are happy to provide a review of your application or help you troubleshoot rotary encoder failure. Check out our guide to troubleshooting encoder noise problems.
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Signal output failure can be caused by several different mechanical or environmental factors including mounting issues, shorted wires, crosstalk, signal interpolation or output driver issues. Dust and other particulates inside the encoder can cause optical technology to fail. The resulting condensation on the disc, PCB or wiring can cause encoder failure. In harsh environments, temperature changes or direct contact with liquid can introduce humidity into the encoder housing. It’s important to adhere to the specified mounting tolerances and installation instructions. This displacement puts more stress on the bearings and can lead to overload or overheating. When a shaft is bent it becomes misaligned with the bearings. When rotary encoders fail to perform, the most common causes stem from mechanical or environmental problems.
Contact us online or call (608) 924-3000 for expert help. Quantum Devices sales engineers are happy to assist in encoder selection. For more detail, see our page on choosing the resolution of a rotary encoder. Not all applications require the same level of positioning accuracy, and the maximum input frequency of the encoder’s controller is also a factor.
For rotary encoders, resolution is the number of pulses per revolution (PPR). Resolution refers to the smallest unit of measure the encoder can detect. The effects of dust, vibration, temperature extremes, moisture and other contaminants can be mitigated by choosing a rotary encoder designed to operate under demanding conditions. Once you’ve defined the mechanical specifications for your rotary encoder, you’ll also need to consider the operating environment. It’s also important to choose the right fittings and mounting arrangement to ensure proper alignment. Rotary encoders can have a solid or hollow shaft, and which type you need depends on the incoming shaft type in your application. Rotary encoders with hollow or solid shaft & different housings You’ll need to know the space requirements of the system where your rotary encoder will be integrated. Choosing a rotary encoderĪssuming you’ve determined whether your application requires an absolute or incremental rotary encoder, the primary considerations when selecting a rotary encoder are the size and shaft type.
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Quantum Devices partners with OEM equipment manufacturers to provide application-specific encoders, with free samples available for qualified projects. Rotary encoders are mounted directly to the motor shaft in packaging/labeling machines, textile machinery and material handling equipment.Īdditional rotary encoder applications include AGVs, flight simulators, dosing pumps and many others. Rotary encoders are also used for servo motor feedback, to control speed as well as multiple axes of motion. For example, rotary encoders are used in industrial automation to control conveyor belt speed and direction. Rotary encoders are used to monitor and/or control a wide range of mechanical systems. Rotary encoder mounted directly to the electric motor shaft There are also three main types of technologies for rotary encoders: No calibration is necessary to find the absolute (starting) position, which is always known. See: How Incremental Encoders WorkĪbsolute rotary encoders are able to report position information as soon as they’re powered up, even if power was interrupted during the last use. Motion controlled systems using incremental rotary encoders need to be “homed in” on startup, or after a power loss. Incremental rotary encoders report changes in position, or relative position. There are two main types of rotary encoder: incremental and absolute. In contrast, linear encoders detect mechanical displacement along a straight line. The rotary encoder (aka shaft encoder) senses the angular position and motion of the rotary shaft and generates digital output signals based on those rotational mechanical displacements. QM35 (left) & QM元5 (right) rotary encoders with bearingless modular designĪ rotary encoder is an electromechanical device that attaches to a motor/shaft assembly in order to accurately report the position, speed and acceleration of the rotary shaft.
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