Ultrasonic Double Sheet Sensor (UDC-18GM-400-3E1)

• Ultrasonic system for reliable detection of no, one, or two overlapping sheet materials, preferably papers• No TEACH-IN required• Function indicators visible from all directions• Insensitive to printing, colors, and shining surfaces• Material weight from 10 g/m 2 up to over 2000 g/m 2• Very wide material spectrum, finest papers up to thin sheet metals as well as plastic- and metal foils• Perpendicular or inclined sensor mounting relative to the sheet plane possible• ProgrammableTechnical parameters                   General specificationsSensing range20 ... 60 mm , optimal distance: 45 mmTransducer frequency395 kHzIndicators/operating meansLED greenindication: single sheet detectedLED yellowIndication: No sheet detected (Air)LED redindication: double sheet detectedElectrical specificationsOperating voltage U b18 ... 30 V DC , ripple 10 % SSNo-load supply current I 0< 80 mATime delay before availability t v< 500 msInputInput typeFunction input0-level: -U B ... -U B + 1V1-level: +U B - 1 V ... +U BPulse length≥ 100 msImpedance≥ 4 kΩOutputOutput type  3 switch outputs NPN, NCRated operating current I e3 × 100 mA , short-circuit/overload protectedVoltage drop U d≤ 2 VSwitch-on delay T onapprox. 15 ms (shorter response time on request)Switch-off delay T offapprox. 15 ms (shorter response time on request)Pulse extensionmin. 120 ms programmableAmbient conditionsAmbient temperature0 ... 60 °C (32 ... 140 °F)Storage temperature-40 ... 70 °C (-40 ... 158 °F)Mechanical specificationsConnection typecable PVC , 2 mCore cross-section0.14 mm Protection degreeIP67MaterialHousingnickel plated brass; plastic components: PBTTransducerepoxy resin/hollow glass sphere mixture; polyurethane foamMass150 gGeneral informationSupplementary information  Switch settings of the external programming adapter:"output load": pull-up"output logic": invDiagrams                   Dimension            Additional information           Connection                 Description of sensor functionsThe ultrasonic double sheet monitor is used for double sheet detection in all situations in which the automatic distinction between double and single sheets is required in order to protect machines or avoid waste production. The double-sheet monitor is based on the ultrasonic through-beam principle. The following can be detected:- No sheet, i.e. air,- Individual sheet- Double sheetA microprocessor system evaluates the signals. The appropriate switch outputs are set as a result of the evaluation. Changes in ambient conditions such as temperature and humidity are compensated for automatically. The interface electronics is integrated into a compact M18 metal housing together with a sensor head. Switching onThe sensor is equipped with 6 connections. The functionality of the connections is described in the following table. The function input(PK) is used to assign parameters to the sensor. (See Output pulse extension, Alignment aid and Program selection). During normaloperation, the function input must always be securely connected with +U B or -U B , to avoid possible interference or improper functionality.ColourSwitching on CommentsBN+U B WHSwitch output for single sheetsPulse width corresponds to the eventBKSwitch output for double sheetsPulse width corresponds to the eventGYSwitch output for airPulse width corresponds to the eventPK-U B /+U BFunction input for parameter assignment/pulse prolongationBU-UB  Normal modeThe sensor is working in normal mode if the function input (PK) is applied to -U B or +U B when the power source (Power-On) is supplied,as shown in the output pulse extension table (see below).Displays:LED yellow:      Detection of airLED green:      Detection of single sheetsLED red:          Detection of double sheetsSwitch outputs:The switch outputs are only active in normal operation!White:      WH     Single sheet outputBlack:      BK      Double sheet outputGray:       GY       Air output Procedure for assigning parametersIt is possible to switch to additional parameter assignment modes from the display mode:         Alignment mode -->         Program selection mode -->         Alignment aid mode --> (for checking)When the function input (PK) is applied to -U B (for > 500 ms), the mode changes. When the "Program selection" mode is active, swit-ching on function input (PK) on to +U B (for > 500 ms) selects the next program level.Disconnecting the power supply causes the system to exit the current mode with the selected program change.The switch outputs are not active while parameters are being assigned to the sensor!ModesAmplitude controlDuring installation, the amplitude control can be used to check whether the ultrasonic amplitude at the receiver is sufficient. If the transmitter is not aligned properly in relation to the receiver, maximum sound energy is not transmitted to the receiver, which may result in the incorrect detection of materials.When the sensor detects an area of air (yellow LED lights up), the UDC begins to display the stren