Incremental encoders control without wobble
An Alps Electric (UK) product story
Edited by the Electronicstalk editorial team Nov 22, 2007
Typical applications for the EC11J series are in volume adjustment or menu selection for car audio and car navigation systems.
New from Alps Electric, the EC11J series of 11mm incremental-type encoders are available in a wide selection with or without centre-push switches.
They promise a long operating life with up to a million switching cycles and a million rotational cycles.
The encoders have a metal shaft 6mm in diameter and an operating length of around 13mm.
They feature a resolution of either 18 detents and 9 pulses or 30 detents and 15 pulses per rotation, depending on the model.
The necessary detent torque amounts to 10mNm.
Further technical specifications include a bushing length of 5, 7 or 10mm, and a push-pull strength of 100N.
The output signals of pins A and B are proportionate to the phase difference.
The centre-push switch is designed as single-pole single-throw push-on switch and is rated for switching currents of up to 1mA at 5V DC.
It requires an operating force of 5+/-2N.
The actuating travel of the switch amounts to 0.5+/-0.3 or 1.5+/-0.3mm.
The maximum initial contact resistance is specified for 100mohm.
The shaft wobble is less than 0.2mm (bushing length 10mm type), which is 30% less than previous models.
The EC11J series provides a body height of 4.5mm.
With a compact floor space of 11.7 x 14.2mm, the incremental encoders can be mounted even on high-density printed circuit boards without any problem.
The new encoders are rated for voltages of 5V DC and have a maximum operating current of 10mA with resistive load.
Their operating temperature ranges from - 40 to +85C.
Typical applications of the EC11J series are volume adjustment or menu selection for car audio and car navigation systems.
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