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Miniature kit encoder is programmable

25 April 2016

The latest development in miniature, contact-free, kit-encoder technology, the programmable MiniCODER GEL 2444-P, is available from Motor Technology.

As the latest addition to the MiniCODER range of miniature kit encoders, manufactuted by Lenord + Bauer, the GEL 2444-P sensor has been designed with an additional integrated chip that can be programmed with user defined values and calibration data.

In conjunction with a new service tool, the GEL 211, calibration data can be obtained and saved to the unit over a Wi-Fi connection using the web enabled interface. This aids correct installation and reliable operation. Small differences in the output signals are monitored and corrected, such as signal amplitude and sin/cos amplitude differential. On some systems, if not corrected, these differences might otherwise lead to drive and control faults.

The microprocessor within the kit-encoder also features a configurable operating-hour counter that can monitor the operating time of the unit. Up to seven speed bands can be set to monitor the operation of the sensor and thus the axis. For example an idle speed can be programmed, where the axis is considered to be not operational, as can an over-speed to monitor the axis being used outside the defined specification. The sensor also records the total operating time and the highest and lowest measured temperatures.

Information may also be stored within the sensor, such as the reference number of a high-speed-spindle or the axis description. As the sensors are often embedded within the machine, with difficult access, the chip also stores the type code and serial number of the sensor so that it can easily be accessed with the GEL 211 service tool.

The new MiniCODER plus system is comprised of a scanning unit and a precision target wheel that fits directly onto the shaft or spindle of the machine. The sensor's magnetic, contact-free operation acquires the speed and position of the rotating shaft and is resistant to shocks, vibration, high temperatures and electrical interference. As the target wheel is fitted directly to the shaft there are no bearings, it is maintenance free and compact.

The MiniCODER plus GEL 2444-P is suitable for shaft diameters from 8 to 500mm and is physically and electrically compatible with all other MiniCODER GEL 244x versions. Typical applications include high speed machining, machine tools, high speed cutting, milling and grinding spindles, screw spindles in vacuum pumps, test stands, hybrid motor drives and torque motors.

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