The number of bits used to encode the position. A higher number of bits means a finer resolution; for example, a 9-bit encoder will yield 29 = 512 counts per revolution, while a 10-bit encoder will yield 210 = 1024. Note that high resolution does not necessarily imply high accuracy. Resolution in bits is primarily a specification for optical encoders, and not all suppliers give this information.
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All matching products will have a value greater than or equal to the specified value.
Incremental angular counting is achieved by a light emitter and receiver; outputs can be sine-cosine waves or digitized square waves. Configurations include transmissive systems in which light passes though a transparent disk or is blocked by an opaque line, and reflective systems in which lines are segments of nonreflective space on a strip between reflective segments.
Fiber optic signal transmission is often combined with optical sensing. The transmission of position signals by light is advantageous in applications where high noise or EMI/RFI levels could interfere with electrically transmitted signals.
Position measurement results from the sequence of magnetic switches being activated, or by the resolution of interaction between magnetic fields.
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Modular kit encoders have minimal or frame-like support, but do not include a complete housing. They provide flexibility and are relatively easy to assemble.
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"Required" and "Must Not Have" criteria limit returned
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Multi-turn encoders can sense and output the number of revolutions of the shaft. The term "multi-turn" indicates that the encoder can provide measurements greater than 360°.
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matches as specified. Products with optional attributes
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Programmable or field configurable indicates that the operator can program or set some operating parameters such as resolution, output coding and offsets.
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Intrinsically safe (IS) is an adjective for equipment and wiring which is incapable of releasing sufficient electrical or thermal energy under normal or abnormal conditions to cause ignition of a specific hazardous atmospheric mixture in its most flammable concentration. The IS terminations and wiring may be brought into any hazardous location of any group classification for which it is accepted without requiring explosion proof housing or other means of protection.
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matches as specified. Products with optional attributes
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Unlisted, specialized, or proprietary configuration.
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Electrical Output and Interface
The type of electrical signal that will be produced.
Serial synchronous interface (SSI) is a general standard for absolute encoders. The physical interface consists of two differential connections aside from power and ground. The controller provides a clock input, and the sensor returns a data signal synchronized to the clock.
Ethernet is a local area network (LAN) protocol that uses a bus or star typology and supports data transfer rates of 10 Mbps. The Ethernet specification is the basis for the IEEE 802.3 standard, which specifies the physical and lower software layers. To handle simultaneous demands, Ethernet uses carrier sense multiple access / collision detection (CSMA/CD) to monitor network traffic.
The FOUNDATION fieldbus is a serial, all-digital, two-way communication system that serves as a local area network (LAN) for factory instrumentation and control devices. It uses a line or tree topology and distributed data transfer (DDT). In the hierarchy of digital networks, the FOUNDATION fieldbus is on the lower end.
Controller area network bus (CANbus) is a high-speed serial data network designed for harsh electrical environments and real-time control applications. It operates at data rates up to 1 Mbps and provides excellent error detection and confinement capabilities.
INTERBUS® is a fieldbus network based on the cyclic, serial transmission of input/output data between a master and slave stations. Common versions include INTERBUS-S®, INTERBUS-R®, and INTERBUS-MUX® (MUX). INTERBUS, INTERBUS-S and INTERBUS-MUX are registered trademarks of Phoenix Contact GmbH & Co.
DeviceNet uses controller area network (CAN) network protocol to connect industrial devices such as limit switches, photoelectric cells, valve manifolds, motor starters, drives, and operator displays to programmable logic controllers (PLCs) and personal computers (PCs).
The process fieldbus (PROFIBUS®) is a popular, open communication standard used in factory automation, process automation, motion control, and safety applications. PROFIBUS is standardized in IEC 71158 and IEC 61784 and is suitable for both fast, time-critical applications and complex communication tasks. PROFIBUS is a registered trademark of PROFIBUS International.
SUCOnet Class 1 and 2 (K1 and K2) are 16-bit serial communication interfaces developed by Moeller GmbH for use with programmable controllers and automation products.
Other unlisted, specialized, or proprietary encoder outputs.
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This is the full required range of ambient operating temperature.
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User may specify either, both, or neither of the limits in a "From - To" range; when both are specified, matching products will cover entire range. Products returned as matches will meet all specified criteria.
