User manual OMRON ZX

[. . . ] Z197-E1-02A ZX-L-N Series Smart Sensors Laser Type USER'S MANUAL ÇÕǹÇ?Ç Section 1 Section 2 Section 3 Section 4 Section 5 Section 6 Section 7 Introduction ëÊ 1 èÕ ëÊ 2 èÕ ëÊ 3 èÕ ëÊ 4 èÕ Introduction APPLICATION CONSIDERATIONS (Please Read) Section 1 FEATURES Section 2 PREPARATION FOR MEASUREMENT Section 3 BASIC OPERATION Section 4 MAIN APPLICATIONS AND SETTING METHODS Section 5 DETAILED SETTINGS Section 6 AUXILIARY FUNCTIONS Section 7 APPENDIX User's Manual Smart Sensors ZX-L-N Series Introduction Introduction Introduction Introduction Thank you for purchasing the ZX-L-N Series Smart Sensor. This manual provides information regarding functions, performance and operating methods that are required for using the sensor. When using the ZX-L-N Smart Sensor, make sure to observe the following: · The ZX-L-N Smart Sensor must be operated by personnel knowledgeable in electrical engineering. · To ensure correct use, please read this manual thoroughly to deepen your understanding of the product. [. . . ] Set hysteresis when judgements are unstable to prevent chattering. p. 94 88 ZX-L-N User's Manual Section 5 DETAILED SETTINGS Inputting Threshold Values Directly The threshold values can be set by directly inputting the numeric values. Direct input is useful when you know the dimensions for an OK judgement or when you want to fine-tune threshold values after teaching. Moving to T Mode 1. Set the mode switch to T. RUN T FUN Setting Threshold Values 2. Move the threshold switch to either H or L, i. e. , the threshold to be set. The current measured value will be displayed on the main display. The currently set threshold value (either HIGH or LOW, depending on the threshold switch setting) will be displayed on the sub-display. H L LD ON ZERO ENABLE (mm) Section 5 Entering Threshold Values SUB 3. Press any Cursor Key. The leftmost digit of the sub-display will flash. SUB 4. Use the Cursor Keys to set the threshold Moves from one digit to another. Changes the current value. value. 5. Press the ENT Key to confirm the setting. The setting will be registered. SUB Countermeasures for Setting Errors If ERRLH or ERRHL is displayed, the following error has occurred. · HIGH threshold value < LOW threshold value · HIGH threshold value - LOW threshold value < hysteresis width SUB SUB Hysteresis Setting p. 94 If an error is displayed, the threshold values have not been updated. Set the threshold values again. User's Manual ZX-L-N 89 Section 5 DETAILED SETTINGS Position Teaching Performs measurement and uses the measurement results to set threshold values. Position teaching is useful when threshold samples, i. e. , with the upper and lower limits, can be obtained beforehand. Sensor head Sensor head Threshold sample (Upper limit) Teaching point = LOW threshold Threshold sample (Lower limit) Teaching point = HIGH threshold Hold, trigger mode, and scaling settings that have been made before teaching are reflected in the teaching measurements. Section 5 Entering Threshold Values Moving to T Mode 1. Set the mode switch to T. RUN T FUN Setting Threshold Values 2. Move the threshold switch to either H or L, i. e. , the threshold to be set. The current measured value will be displayed on the main display. The currently set threshold value (either HIGH or LOW, depending on the threshold switch setting) will be displayed on the sub-display. LD ON ZERO ENABLE (mm) SUB 3. Place the threshold sample in position. The main display value changes. 4. Press the ENT Key for at least one second and then release. The measured value at the point that the ENT Key is released will be set as the threshold value. This threshold value will be shown on the sub-display. SUB When [ERRLH] or [ERRHL] is displayed p. 89 The threshold values set using position teaching can be changed using direct input. This is useful when setting judgement tolerances for measured values. p. 89 90 ZX-L-N User's Manual Section 5 DETAILED SETTINGS Two-point teaching Performs measurement on two samples and uses the intermediate value of the two measurement results to set threshold values. Two-point teaching is useful when you want to detect subtle differences between the standard sample and defective samples. Sensor head Sensor head Teaching point A Standard sample Defective sample Teaching point B The threshold can be calculated by the following equation. Threshold = (Teaching point A + Teaching point B) / 2 Section 5 Entering Threshold Values Hold, trigger mode, and scaling settings that have been made before teaching are reflected in the teaching measurements. Setting Teaching point A 1. Set the teaching point A by following steps 1. [. . . ] Limits applicable to products whose visible emission does not exceed Class I limits for emission durations of 1, 000 seconds or less and are not intended for viewing. Limits applicable to products that have emissions in the visible spectrum (400 to 710 nm) for emission durations in excess of 0. 25 second, providing that emissions for other durations and/or wavelengths do not exceed the Class I limits. Class II products are considered hazardous for direct long-term ocular exposure. ANSI description A Class 1 laser is considered to be incapable of producing damaging radiation levels during operation and maintenance and is, therefore, exempt from any control measures or other forms of surveillance. Class I/1 Section 7 Requirements from Regulations and Standards Class IIa/2a Class II/2 Class 2 lasers are divided into two subclasses, 2 and 2a. [. . . ]