Encoder

In order to take advantage of the maxon motor EC 90 flat motor's ultra slim design also in high-precision applications and positioning tasks, a microsystem is being applied: the MILE encoder. The miniature system can be integrated into the motor without adding length to it. Behind the abbreviation MILE hides Maxon's Inductive Little Encoder, a small inductive rotary encoder. Its operating principle is based on the detection of high-frequency inductivity which generates eddy current in an electrically conducting target. The advantages of a high-frequency inductive method of measurement compared to traditional encoders: High robustness towards dust or oil vapor, thus making additional protective measures, such as a cover, unnecessary, high speed and insensitivity against interference pulses (for example from PWM controllers or motor magnets). Compared to its predecessor, equipped with an optical encoder, the new EC 90 flat MILE possesses a higher nominal torque of 517 mNm and is, with resolutions of up to 3200 impulses per turn. This makes it a good choice in applications, such as door drives, logistic robots, or solar trackers.