Danaher Controls Releases ACURO Absolute Encoders With Enhanced Reliability Features.Business Editors CHICAGO--(BUSINESS WIRE)--Dec. 11, 2002 Danaher Controls introduces the Dynapar ACURO series of absolute encoders that offer compact design, higher resolution, and innovative reliability features that help prevent downtime The time during which a computer is not functioning due to hardware, operating system or application program failure. . Wide variety of options -- ACURO encoders are available with a choice of resolutions depending on user requirements, in single-turn or multi-turn configurations, and with a choice of solid shaft or hollow-shaft coupling. Two basic versions are available: ACURO Industry, in an industry-standard 58 mm housing for a wide range of industrial and systems engineering applications; and ACURO Drive, for use with motors as a feedback element. The ACURO Industry provides a resolution of up to 17 bits in the single-turn configuration and 12 bits in multi-turn, while the ACURO Drive provides up to 22 bits in single-turn configuration and 12 bits in multi-turn. Multi-turn versions use a silently running low profile mechanical gear that allows a lower installation height than battery-buffered counter solutions and is maintenance-free at a continuous speed of up to 12,000 rpm. The gearset is nonmagnetic and immune to interference in such applications as welding welding, process for joining separate pieces of metal in a continuous metallic bond. Cold-pressure welding is accomplished by the application of high pressure at room temperature; forge welding (forging) is done by means of hammering, with the addition of heat. or motors equipped with powerful brakes. The gearset takes up very little space, allowing an installation depth of just 45 mm -- which is important to OEMs who are always looking to save space in their equipment. Power consumption is low -- just 45 mA max. for the single-turn version and 85 mA for the multiturn version at a supply voltage of 5 V. Enhanced reliability under harsh conditions -- An innovative set of integrated features enhance the reliability of ACURO encoders. Optical sensors internally monitor the amplitude of the encoder A hardware device or software that assigns a code to represent data. See encode. 1. (algorithm, hardware) encoder - Any program, circuit or algorithm which encodes. Example usages: "MPEG encoder", "NTSC encoder", "RealAudio encoder". 2. signals, and exceeding the limit values will result in warning and alarm messages to the control system. A code check ensures that the encoder signal reflects the recorded turn -- bit by bit. In this so-called single-step check, the internal signal processing See DSP. function checks each individual increment To add a number to another number. Incrementing a counter means adding 1 to its current value. for possible occurrence after the previous event. Any violation of this rule, possibly due to glass breakage or mechanical overload Mechanical Overload The failure or fracture of a product or component in a single event is known as overload. It s a common failure mode, and may be contrasted with fatigue, creep rupture or stress relaxation. , will lead to an immediate alarm. Operating temperature range is -40 to 100 degrees Celsius for the ACURO Industry, and -15 to 120 degrees Celsius for the ACURO Drive. An internal temperature sensor can be set by the user to trigger at the upper and lower limits; exceeding the limit values will result in warning messages and finally lead to an alarm being signaled to the control system. Alarm messages signaled by ACURO encoders are easily recognized by service personnel due to their bright red LED color -- and no time is wasted searching for location plans. Reliability is further enhanced by a minimal number of internal soldering soldering Process that uses metal alloys with low melting points to join metallic surfaces without melting them. Tin-lead solders, once widely used in the electrical and plumbing industries, are now replaced by lead-free alloys. joints due to highly-integrated circuits, a reduced number of printed circuit boards, and the use of simulation-optimized gears in the multiturn version. Electronics speed systems setup -- ACURO encoders feature integrated data storage, which allows the detection of individual encoders and allows parameterization: a significant benefit in OEM (Original Equipment Manufacturer) The rebranding of equipment and selling it. The term initially referred to the company that made the products (the "original" manufacturer), but eventually became widely used to refer to the organization that buys the products and applications due to reduced adjustment and assembly times, and a further step towards safety and reliability. Data storage further includes a self-monitoring feature that checks the operating hours and sends a warning message to initiate preventive maintenance The routine checking of hardware that is performed by a field engineer on a regularly scheduled basis. See remedial maintenance. preventive maintenance - (PM) To bring down a machine for inspection or test purposes. See provocative maintenance, scratch monkey. . In the starting (home) position of the installation, the encoder shaft does not need to be turned to a defined status -- the reference position is determined electronically or via a push-button (electronics) push-button - A roughly fingertip-sized plastic cover attached to a spring-loaded, normally-open switch, which, when pressed, closes the switch. Typical examples are the keys on a computer or calculator keyboard and mouse buttons. immediately after installation. The reset key is protected against inadvertent operation and can be locked completely after starting up the system. Setup software for the ACURO series runs under Windows and is easy to apply even by occasional users. Always ready to connect -- ACURO can communicate with any type of control system using common formats, ranging from parallel (gray or binary code binary code Code used in digital computers, based on a binary number system in which there are only two possible states, off and on, usually symbolized by 0 and 1. Whereas in a decimal system, which employs 10 digits, each digit position represents a power of 10 (100, 1,000, ) to such field buses as Profibus, DeviceNet, CANopen, CAN Layer2 Interbus, and SSI (1) See server-side include and single-system image. (2) (Small-Scale Integration) Less than 100 transistors on a chip. See MSI, LSI, VLSI and ULSI. 1. (electronics) SSI - small scale integration. 2. . A 2048-step sine/cosine signal (1Vpp) is also available for dynamic control. ACURO is also available with the new freely licensable BiSS (Bidirectional The ability to move, transfer or transmit in both directions. Synchronous Refers to events that are synchronized, or coordinated, in time. For example, the interval between transmitting A and B is the same as between B and C, and completing the current operation before the next one is started are considered synchronous operations. Contrast with asynchronous. Serial Interface) digital output. Using only six lines (2 x clock, 2 x data, 2 x supply), BiSS establishes a synchronous serial connection between the encoder and control system. Data throughput of up to 10 Mbaud is achieved with standard drivers and commercial-type cables with line lengths greater than 50 m. BiSS can also transmit additional sensor signals when available, such as torque, temperature, and acceleration values, which are frequently needed in mechanical engineering. Since BiSS is an all-digital system, it eliminates the added cost of A/D converters (Analog/Digital converter) A device that converts continuously varying analog signals from instruments and sensors that monitor conditions, such as sound, movement and temperature into binary code for the computer. needed in drive systems that connect to encoders using some proprietary protocols. It is hardware-compatible with SSI, requiring only software changes. The appropriate driver software is included in the scope of delivery. Platform concept -- The ACURO encoder series is based on a common platform for a multitude of product variants, which makes possible a wide variety of high-precision encoders at low cost. Prices start at $375. Evaluation Kits and Information. ACURO Evaluation Kits are available, at prices starting at $150. To request a kit, or for more information on the ACURO encoders or any of Danaher Controls' products, call Danaher Controls at: 800-873-8731, or visit the company on the web at www.dancon.com. Production of ACURO encoders is scheduled to begin in January, 2003. About Danaher Controls Danaher Controls designs, manufacturers and markets a wide variety of encoders, counters, motion controls and timing products worldwide, including Dynapar, Northstar, and Hengstler brand encoders, Veeder-Root brand counters and Eagle Signal brand timers. For more information, contact your nearest Danaher Controls distributor or Danaher Controls at 1675 Delany Road, Gurnee, IL 60031. Phone: 1-800-873-8731 or 847-662-2666; FAX: 847-662-6633. Website: www.dancon.com |
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