User manual OMRON E3NT-L

[. . . ] E30E-EN-01A Diffuse Reflective Sensor E3NT-L Photoelectric Sensor OPERATION MANUAL TABLE OF CONTENTS SECTION 1 Important Precautions . . 1-1 1-2 1-3 1-4 1-5 1-6 1-7 Using the operating instructions . Use in accordance with the intended purpose . Use that is not in accordance with the intended purpose . [. . . ] . 38 38 39 40 40 40 37 Safety notes Section 6-1 6-1 Safety notes Assembly, electrical connection and maintenance must only be carried out by instructed, trained and authorised specialist personnel in accordance with applicable regulations, after de-energising the power supply and with the machine switched off. The machine must be safeguarded against reactivation. Conversions and changes and tampering in the interior of the sensor, the data interface and the alignment tool are forbidden. During assembly, do not knock the sensor or drop it. The ambient conditions at the assembly location must conform to the technical data (see SECTION 3 Specification). 6-2 Sensor assembly Contrary to sensors with single triangulation, E3NT with double triangulation, allows the measured object's direction of motion to be in all three directions. Thus, the rotatory position of the sensor about its optical axis can be chosen freely (see Figure 1 Position of the sensor). Figure 1 Position of the sensor If the light spot is not completely on the same plane as the target object (minimum object size) the distance is not determined and malfunction can occur (see Figure 2 Not determined distance). If necessary a trigger signal or timer function has to be applied. Figure 2 Not determined distance 38 Sensor assembly Section 6-2 The sensor must be fitted so that: · It is correctly aligned before it is adjusted · It is protected as far as possible against vibration and shock · It is protected as far as possible against extraneous incident light · It is protected as far as possible against damage and soiling · Electrical connection is possible · It is as accessible as far as possible for maintenance work · Operation of the push buttons is possible · The display is visible. 6-2-1 Sensor's assembly direction As far as possible, the sensor's optical surface should be aligned parallel to the surface of the measured object. 90° detection object 90° Figure 3 Parallel alignment If the measured object has a glossy, reflecting surface, the sensor's optical system should be tilted by 5 . . . 10° in relation to the surface of the measured object. 5° . . . 10° 90° detection object Figure 4 Alignment for glossy surfaces 39 Sensor assembly Section 6-2 If there is a reflecting surface in parallel with the sensor's optical axis, this might lead to unstable switching states. Therefore, reflecting objects within the sensor's optical axis should be avoided. If this should not be possible, the reflecting surface should not be parallel to the sensor's optical axis, but should be rotated by at least 10°. Mirror-like objects can cause malfunction inside and outside the sensing range. Avoid mirror-like objects in or close to the optical axis. 6-2-2 Assembly via assembly holes 1. Professionally produce securing holes/threaded holes corresponding to the six possible assembly holes of the sensor (see Section 3-3 Dimensions). Professionally attach the sensor with suitable securing material. Roughly align the sensor to the possible position of the measured object. Tighten the securing screws. 6-2-3 Assembly by universal mounting bracket E39-EL1 1. Drill and tap the necessary securing holes / threaded holes according to the required pattern of the universal mounting bracket (see Section 3-3 Dimensions). Using the included securing material, professionally fit the sensor on the mounting bracket. With suitable securing material, professionally fit the mounting bracket on the body of the machine. Roughly align the sensor to the possible position of the measured object. Tighten the securing screws. 6-2-4 Assembly with adapter bracket E39-EL2 and bracket E39-EL1 Applying the adapter bracket E39-EL2 the universal mounting bracket E39EL1 can be used as an adapter plate to mount the E3NT to existing holes. [. . . ] A second switching output is not available. If the switch-on/off delay is off in the OPTIONS menu path, the switch-on/ off delay parameters do not appear in the SET menu path. The outputs behave differently depending on the switch-off delay function that is set in the OPTIONS menu path. The key lock becomes active again when no keys have been pressed for approx. [. . . ]