Teach Manual AlphaProx Inductive distance measuring sensors with high sensitivity Version: 1.0 General Information This manual applies to AlphaProx sensors featuring the following teach modes (according to the datasheet): 1-point analog Factory reset The assembly instruction also states the available teach modes (on page 3) and the sensor type (on page 2): Linear sensors with high sensitivity and teach input (IRxx.DxxK) General procedure: To teach the sensor, the teach wire must be connected to the positive supply voltage of the sensor (+Vs). Depending on the duration of the contact, different teach levels can be selected. A flashing LED indicates that the teach procedure has started. Teach Level 1 (1-Point Teach Analog) The 1-point teach analog is typically used in applications where a short setup time are desired and the installation tolerances shall be compensated. Two situations can be distinguished: 1) Minimum distance: During the teach procedure the target is positioned at the minimum distance relative to the sensor (position “A” in the lower graph). In the application the target moves away from the sensor. In this situation the sensor will be taught to provide an output signal of 0V (or 4mA) at position “A”. 10V/20mA slope 0V/4mA distance Sd min A Sd max Connect teach wire to +Vs (2s). When yellow LED starts flashing with 1Hz, cut connection Position target at distance «A» Connect teach wire shortly (>0.2s) to +Vs Wait 4s (yellow LED keeps flashing) Yellow LED flashes shortly Teach-In finished Teach procedure: 1-point teach analog (the target is close and moves away from sensor) 2) Maximum distance: During the teach procedure the target is positioned at the maximum distance relative to the sensor (position “B” in the lower graph). In the application the target moves towards the sensor. In this situation the sensor will be taught to provide an output signal of 10V (or 20mA) at position “B”. 10V/20mA slope 0V/4mA Sd min Position target at distance «B» distance B Sd max Connect teach wire to +Vs (2s). When yellow LED starts flashing with 1Hz, cut connection Connect teach wire shortly (>0.2s) to +Vs Within 4s: Connect teach wire shortly (>0.2s) to +Vs (yellow LED keeps flashing) Yellow LED flashes shortly Teach-In finished Teach procedure: 1-point teach analog (the target is far away and moves towards the sensor) If position “A” is too close to Sd_max (case 1) or position “B” is too close to Sd_min (case 2), so that part of the curve exceeds the measuring range, the teach-in is invalid and the sensor keeps its previous settings. This is indicated by a fast flashing LED (8Hz) at the end of the teach procedure. en_TA_IRxx.DxxK.docx 23.03.2016 10:48/lop V1.0 ANW_81196568 2/3 Baumer Electric AG Frauenfeld, Switzerland Teach Level 2 (1-Point Teach Analog “centered”) This 1-point teach analog is used in applications where symmetrical displacements around a centered rest position shall be measured (e.g. vibrations). By teaching the rest position, installation tolerances can be compensated. During the teach procedure the target is positioned at the centered rest position (position “A” in the lower graph). In this situation the sensor will be taught to provide an output signal of 5V or 12mA (depending on the sensor type) at position “A”. 10V/20mA slope 5V/12mA 0V/4mA distance Sd min Position target at distance «A» A Sd max Connect teach wire to +Vs (4s). When yellow LED starts flashing with 2Hz, cut connection Connect teach wire shortly (>0.2s) to +Vs Yellow LED flashes shortly Teach-In finished Wait 4s (yellow LED keeps flashing) Teach procedure: 1-point teach analog (the target is centered and moves in both directions) If position “A” is too close to the measurement range’s boundaries (Sd_min, Sd_max), so that part of the curve exceeds the measuring range, the teach-in is invalid and the sensor keeps its previous settings. This is indicated by a fast flashing LED (8Hz) at the end of the teach procedure. Teach Level 3 (Factory Reset) This will restore the default settings the sensor had when leaving the factory. The default settings are stated in the mounting instructions which are delivered with the sensor. Connect teach wire to +Vs (6s). When yellow LED starts flashing with 4Hz, cut connection Yellow LED flashes shortly Teach-In finished Teach procedure: Factory reset If the teach wire is connected to +Vs for more than 10s, the teach procedure is aborted and the sensor keeps its previous settings. This is indicated by an LED flashing frequency of 8Hz. en_TA_IRxx.DxxK.docx 23.03.2016 10:48/lop V1.0 ANW_81196568 3/3 Baumer Electric AG Frauenfeld, Switzerland