Rotary encoders with monitoring of the bearing wear as well as a method for this purpose,

摘要

The present invention relates to a rotary encoder (1) and a method for the wear monitoring of the same. The rotary encoder has a detector device (11) with at least one measuring sensor (12) on. By means of the measuring sensor is in operation a for the angular position and / or - speed of an article which can be connected with the rotary measuring signal (13) can be generated. The detector means (11) has at least one rotational bearing (15) and at least one over the rotary bearing so as to be rotatable relative to the measuring sensor in the measuring field (17) arranged on the measuring graduation (16). In the rotary encoder (1) is also a monitoring device (20) is integrated which data transmitting with the measurement signal which is connected to and during operation as a function of the measuring signal to be a for the level of wear of the rotary encoder representative state signal (23) can be output. In order in good time before a mechanical failure of the rotary encoder to be able to warn, the monitoring device (1) according to the invention with a counter (25), in which a for the level of wear of the rotational bearing representative of the information contained in the measurement signal via the angular position and / or - speed information contained in the form of value is stored permanently.