The absolute LC 115 and LC 415 sealed linear encoders are available in Functional-safety (FS) encoder versions for the EnDat 2.2 interface and in the near future DRIVE-CLiQ interface. This availability means that these encoders can be used as single-encoder systems in safety-related applications, such as in axes with a linear motor. In addition to safe processing of the position values, these encoders provide fault exclusions for the loosening of the mechanical coupling for various types of mounting.
The encoders are for use on machines with measuring lengths up to 4240 mm. The LC 115 features a sealing design with two successive pairs of sealing lips. When compressed air is introduced into the scale housing, it results in an effective seal between the two sealing lip pairs. This protects the DIADUR graduation inside, which is responsible for the positioning accuracy, from contamination by dust, chips and coolant.
The resolution of the LC 115 and the LC 415 with an accuracy grade of 3 µm was increased from 5 nm to 1 nm, compared to past LC xx3 series. In the near future, new interfaces from Fanuc (ai), Siemens (DRIVE-CLiQ) and Mitsubishi (High Speed Interface up to 5 MHz) will be paired with these encoders.
Filed Under: Encoders • linear, Linear motion • slides, Motion control • motor controls, Safety systems + components