Together with mpa valves it forms a namurcompatible process interface with an. Nema rating an enclosure rating per nema standard 250. The edge of the cam metal strip will be at the edge of the sensor target when activation occurs. What is namur standard and why its allways reletad with. A threeposition switch facilitates the selection of various test conditions.
Jun 07, 2016 choosing a backup generator plus 3 legal house connection options transfer switch and more duration. We have been representing the interests of our members for more than 65 years. Namur interface namur proximity sensors traditionally have a constant current path characteristic. Nowadays, it is possible to obtain binary switching in proximity sensors simultaneous changes in the switch status of sensor and amplifier by using the latest technology while maintaining the standard voltage and current values. Altp delayed type for 1 sensor or aln2 type for 2 sensors. Q45 namur sensors page 4 q45 namur glass fiber optic infrared, 880 nm visible red, 650 nm diffuse mode performance based on 90% reflectance white test card models range cable supply voltage output type excess gain beam pattern infrared, 880 nm 1 10 100 10 mm 0. With that information, its easier to detect a fail high condition on a level transmitter, for example, that clearly tells you whether you have a full tank or a failed instrument. Namur sensors and their interfaces digital input or amplifiers have to comply.
Putting it simply, when a namur sensor sees a target, the resistance goes from low to high. Due to approvals required for hazardous environments, intrinsically safe sensor configurations require a. Discover the world of namur and get a deeper insight into the association. The namur atexiecex series inductive sensors are electronic proximity sensors whose input current is changed with the approach of a metal actuator see figs. The function of limiting power is managed by the respective device and must be provided through a suitable isolation amplifier. Typically used for intrinsically safe applications. Namur sensor a 2wire variableresistance dc sensor whose operating characteristics conform to din 19 234. For the basics of comparator design, view the effective application of. Digital namur signal from sensors in nonexplosive zones and explosive zones 1 and 2. The namur ne43 is a recommendation which gives a guideline how a sensor fault can be indicated to a control system by means of the 420ma signal. Variable resistance output, namur en 50227 cylinder position indicators, strapon style plastic housing with pottedin cable permaprox qst permaprox accessories can be found on pages e17 and e18.
A wide variety of namur proximity switch options are available to you, such as inductance sensor, current sensor, and capacitance sensor. A namur sensor is a nonamplified sensor that supplies two different signal levels depending upon switch state. The input circuit between the sensor or mechanical contact and the switch isolator is suitable to be. On the inside, namur sensors have different circuitry than standard 2wire dc sensors and need special treatment. Moling science and technology innovation center, no. All adjustments assume you are looking down on the top of the sensors. A sensor fault is signalled by extending the range of the 420ma signal. Namur with protection by intrinsic safety ia, require associated apparatus. When the current is below 3,6 ma or above 21 ma this is interpreted as a sensor fault. Namur was founded at leverkusen on november 3, 1949, as the body to represent the interests of the users of measurement and control technology in the chemical industry by such.
The distributed control systems dcs working group addresses issues including the following topics in the context of its experience exchange, its concept developments, formulation of requirements to be met by automation solutions and its involvement in national and international standardisation. A barrierswitch isolator is designed to supply power to the namur sensor, read the output state of the sensor and provide the desired. Features rear of sensor, quickdisconnect model shown 1 only standard 2 m 6. Proximity sensors inductive high temperature type ia, m12, namur.
N0530a switching amplifiers for namur sensors ifm electronic. Namur sensors include a variety of proximity sensors and industrial encoders. Inductive sensors for explosive environments namur interface namur proximity sensors traditionally have a constant current path characteristic. Nowadays, it is possible to obtain binary switching in proximity sensors simultaneous changes in the switch status of sensor and amplifier by using the latest technology while. Use stonel light read tester or use a 24 vdc power supply. Digital electronic module 4di namur 6es71 4rd020ab0 manual, 032010, a5e0277348801 7 properties 1 1. Namur 2 m silicone cable product description inductive proximity sensor with namur output in m12 housing for flush mounting. The final user must use the products according with the instruction manuals supplied. This one happens to be a proximity sensor, so it senses metal.
Tida010044 namur plc digital input with fault protection. The small size, low current, voltage and impedance values that characterise them allow their use in various applications in hazardous areas with explosive atmospheres consisting. Ive taken the liberty of wiring up the namur sensor and the power. Similar to the standard analog output signal, namur ne43 compliant transmitters are designed to output signals greater than the 4 to 20 ma ase signal, allowing for a small amount of signal saturation. About 53% of these are sensors, 5% are other switches. When the cam is released be sure it slides fully onto the spline.
Bernstein offers a wide range of sensors for monitoring and controlling machines in areas with a risk of explosion. When the target moves away from the sensor and is not detected, the current flow increases to above 2. Namur is an international user association of automation technology and digitalization in process industries. Cylinder position sensors 2wire dc, requires remote amplifier 530 vdc variable resistance output, namur en 50227 cylinder position indicators, strapon style plastic housing with pottedin cable permaprox int permaprox accessories can be found on pages e17 and e18.
The q45ad9 series namur sensor is designed in accordance with din 19234 iecen 6094756 for operation via twowire connection to an approved apparatus controlled by the variable internal resistance of the sensor. Mm1260anzw0 mm namur magnetic proximity sensors current consumption, sensor is activated. Namur is a type of sensor output that gives an on or. A typical plc input card is not rated to supply exactly 5 ma of current at 8. Proximity sensors inductive high temperature type ia, m12. Type ia, m12, namur high temperature proximity sensors inductive nickelplated brass housing sensing distance. The sensor with protection by intrinsic safety ia require associated apparatus certified. When the sensor detects the target, the current flow through the sensor drops to less than 1. Namur plc digital input with fault protection and diagnostics.
Hafner namur flex an innovative system to convert a 52way into a 32way valve with air recirculation. A valve terminal and remote io for the process industry for control cabinets in zone 2. Namur the acronym for a european standards organization. Retroreflective sensor with polarization filter for clear object detection, miniature design with versatile mounting options, detects transparent objects, i. Sick proximity sensors ensure the right view through nearly any conceivable material. Minibeam miad9 namur series sensor original document 39616 rev. Choosing a backup generator plus 3 legal house connection options transfer switch and more duration. You need this to loosen or tighten the terminals on the barrier. A logic interface circuit, controller, plc, dcs, or intrinsically safe is barrier is needed to read these current levels. Example 2 and 4 by interconnecting pins 8 and 11 the relay function is inverted, i. Sensors with special characteristics namurinductive sensors. Sensors with special characteristics namurinductive. Scale drawing wiring 3d pdf pdf data sheet to the selector save for later compare.
Prism with dual module namur sensors wiring diagramconnector pinout to bench test a dual module namur sensor. This is the opposite in a manner of speaking to the action of a conventional limit switch where normally the resistance goes from high infinity to low connected when the switch is activated. On quick visual inspection, a 2wire namur sensor looks the same as a standard 2wire dc sensor. There are different reasons why you may need a namur sensor. The sensor varies the impedance across the sensor output, which passes 1 ma or less in the dark condition and 2 ma or more in the. However, diffuse mode sensors do not detect the interruption of the. The inductive sensors of the namur line have voltage and current maintained at a low level so that it can be used in potentially explosive environments such as intrinsic of protection. Proximity sensors and encoders can have namur output namur is a type of sensor output that gives an on or off indication. Namur ne43 analog output signal namur ne43 is a standard used to define the operating aoll and aoul values. Wiring connections miad9 series numar sensors are intrinsically safe only when used with certified intrinsically safe switching amplifiers and barriers. All the namur sensors can operate in connection with the following amplifiers. This in turn dictates special requirements on the plc digital input designed to interface with such sensor with regard to accuracy, and reliability. Digital electronic module 4di namur 6es714rd020ab0. A namur sensor is a 2wire proximity sensor that is usually powered by 8 vdc.
But do not confuse the wiring connections between these two types of sensors. This simulator imitates a namur proximity sensor by implementing a threeposition switch. This is also true for namur sensors, just at a different current or voltage value. When the sensor detects the target, the current flow through the sensor. Namur sensors must be operated with approved switch amplifiers. Namur proximity sensorsensors,wireless sensor,proximity. Namur inductive sensors automation diamond technologies. Namur proximity switch, namur proximity switch suppliers.
Wirebreak protection shortcircuit protection reverse polarity protection. Examples 1 and 3 the relay operates when the number of r. To find the appropriate associated apparatus contact our technical department. Conforming to namur standards din 19234 prewired cable or connector models. The hafner mnh 350 701is a single solenoid 52way valve with airspring return to control a double acting rotary actuator. Photoelectric sensor diffuse mode sensor q45ad9dlq 20200117t18. For the operation of intrinsically safe sensors in hazardous areas. Furthermore, they can be connected to the electronic rotation controls crtp.
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