Danaher Controls introduces the Dynapar ACURO series of absolute encoders

DECEMBER 12--ACURO encoders are available with a choice of resolutions depending on user requirements, in single-turn or multiturn 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 multiturn, while the ACURO Drive provides up to 22 bits in single-turn configuration and 12 bits in multiturn configuration.

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. The gearset takes up little space, allowing an installation depth of just 45 mm. 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.

Optical sensors internally monitor the amplitude of the encoder 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 function checks each individual increment for possible occurrence after the previous event. Any violation of this rule, possibly due to glass breakage or mechanical overload, will lead to an immediate alarm.

Operating temperature range is -40°C to 100°C for the ACURO Industry, and -15°C to 120°C 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.

ACURO can communicate with any type of control system using common formats, ranging from parallel (gray or binary code) to such field buses as Profibus, DeviceNet, CANopen, CAN Layer2 Interbus, and SSI. A 2048-step sine/cosine signal (1Vpp) is also available for dynamic control. ACURO is also available with the new freely licensable BiSS (Bidirectional Synchronous 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.

For more information, go to www.dancon.com.