VIM6* Vibration Sensors Contents Introduction........................ 4 Content of this Document ................4 Target Group, Personnel ................4 Symbols Used ....................5 Intended Use ....................5 General safety instructions ................6 Product Description ....................7 Use and Application ..................7 Vibration Monitoring..................8 2.2.1 Vibration Velocity Operating Range ..................
VIM6* Vibration Sensors Introduction Introduction Content of this Document This document contains information required to use the product in the relevant phases of the product life cycle. This may include information on the following: • Product identification • Delivery, transport, and storage •...
VIM6* Vibration Sensors Introduction Symbols Used This document contains symbols for the identification of warning messages and of informative messages. Warning Messages You will find warning messages, whenever dangers may arise from your actions. It is mandatory that you observe these warning messages for your personal safety and in order to avoid prop- erty damage.
In the event of any serious errors, stop using the device. Secure the device against unintended operation. To have the device repaired, return it to your local Pepperl+Fuchs representative or your sales center. Note Disposal Electronic waste is dangerous.
VIM6* Vibration Sensors Product Description Product Description Use and Application Vibration sensors from the VIM6* product family determine the vibration magnitude using the root mean square (RMS) formation. This form of quadratic average determination or pre-filter- ing allows precise statements to be made about trends relating to the status of the application. Depending on the product versions, the vibration magnitude is determined either as the vibra- tion acceleration (in g rms), as the vibration velocity (in mm/s), or as the vibration velocity and temperature (in °C).
VIM6* Vibration Sensors Product Description Vibration Monitoring 2.2.1 Vibration Velocity Operating Range The operating range of the vibration velocity is not constant over the entire measuring range. It always depends on the current frequency at which the vibration sensor is vibrating. Essentially, the higher the current frequency, the lower the detectable vibration velocity.
VIM6* Vibration Sensors Product Description Reading Example Frequency (Hz) Maximum Measurable Vibration Velocity (mm/s) 1000 Table 2.1 2.2.2 Frequency Response The typical frequency response of vibration monitoring for two frequency ranges is depicted below. Frequency Response: 10 Hz to 1000 Hz The cut-off frequencies are 10 Hz and 1000 Hz with -3 dB damping.
VIM6* Vibration Sensors Product Description Frequency Response: 1 Hz to 1000 Hz The frequency response was recorded using two reference sensors. The cut-off frequencies are 1 Hz and 1000 Hz with -3 dB damping. Figure 2.3 Frequency in Hz Gain in dB Accessories Note Various accessories are available for the VIM6* vibration sensors.
Do not remove the warning marking "Warning – Do not disconnect when energized!" For VIM6***-*****-*P*-******* vibration sensors with type of protection Ex i and a connector plug, only use V15-W-N4-*M-PUR-N4S5 connection cables from Pepperl+Fuchs. Ensure that the device and its measuring head are only operated in their permissible tempera- ture ranges.
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VIM6* Vibration Sensors Installation Caution! The housing must be grounded! The housing of the vibration sensor must be grounded when mounting, either via the machine body or via a separate protective conductor (PE)! Caution! Do not perform any electrical modifications! It is not permitted to perform electrical modifications on the vibration sensor.
VIM6* Vibration Sensors Installation Mounting Prerequisites Mounting the vibration sensor on the mounting surface: • The mounting surface must be clean and flat, i.e., free of paint, rust, etc. • The measuring head surface of the vibration sensor must lie flat on the mounting surface. •...
VIM6* Vibration Sensors Installation Electrical Connection Note Connection Diagram Earth and ground loops are among the most common problems when using measuring setups with sensitive sensor technology. These loops are caused by unwanted differences in potential in the circuit between the sensor and the control interface. Four different grounding concepts are described below.
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VIM6* Vibration Sensors Installation The following diagram applies to each version with an integrated cable outlet or to each plug version that is used in combination with a suitable P+F connection cable accessory. This grounding concept is also recommended if no sources for EMC pollution, such as frequency inverters, are used on the machine side.
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VIM6* Vibration Sensors Installation Grounding Concept 2 (Special Case) Only applicable for: • Plug versions with connection cable accessories from third-party suppliers. • Assumption: The sensor housing and the cable shield are connected. Situation/Requirements of Effects of the Grounding Concept the Application Severe EMC interference is The machine and the sensor housing should not be con-...
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VIM6* Vibration Sensors Installation Grounding Concept 3 (Special Case) Only applicable for: • Plug versions with connection cable accessories from third-party suppliers. • Assumption: The sensor housing and the cable shield are connected. Situation/Requirements of Effects of the Grounding Concept the Application No EMC interference is •...
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Warning! Connection cable for VIM6***-*****-*P*-******* vibration sensors with connector plug. A special V15-W-N4-5M-PUR-N4S5 connection cable from Pepperl+Fuchs must be used with VIM6***-*****-*P*-******* vibration sensors with type of protection Ex i and a connector plug in order to meet the requirements of the standard for type of protection Ex i.
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VIM6* Vibration Sensors Installation The following diagram applies only to VIM6***-*****-*P*-******* vibration sensors. In this con- nection concept, a KFD2-STC4-Ex1 SMART transmitter power supply is used as an intrinsic safety barrier. 10-30V Ω max. Figure 3.4 Machine earth The cable shield for the Ex i cable is located above pin 5 of the M12 connector on the housing potential Do not ground the cable shield Control interface (measuring instrument, PLC, etc.)
VIM6* Vibration Sensors Troubleshooting Troubleshooting What to Do in Case of a Fault In case of a fault, use the following checklist to determine whether a fault with the vibration monitoring can be remedied. If none of the information provided in the checklist solves the problem, you can contact Pep- perl+Fuchs via your sales office with any queries.
VIM6* Vibration Sensors Repair and Servicing Repair and Servicing The device must not be repaired, changed, or manipulated. In case of failure, always replace the device with an original device.