YASKAWA VIPA System SLIO Manual

Contents

YASKAWA VIPA System SLIO Manual Manual pdf 180 page image

Order no. 031-1CA20Environmental conditionsOperating temperature 0 °C to 60 °CStorage temperature -25 °C to 70 °CCertificationsUL certification in preparationKC certification in preparation3.16.4 Functionality3.16.4.1 Basics - Strain gauge DMSStrain gauge DMS are fixed directly on a body or part of a sensor and serve for the fol-lowing possibilities:n Measurement of strains, compressions or torsionsn Measurement of forces and movementsThere are the following strain gauge DMS types:n electrical strain gauge DMS– An electrical strain gauge DMS consists of a carrier material (e.g. stretchableplastic film) with applied metal film. From this a grid of electrically conductiveresistive material is created. During the measurement the behavior is used, thate.g. at the elongation of a metallic conductor resistance its length increases andits diameter decreases. Here the electrical resistance increases proportionally.n optical strain gauge DMS– An optical strain gauge DMS consists of a fibre used as a sensor, with a laser-applied grid in the fibre. During the measurement the behavior is used, that withmechanical load the optical properties of the sensor are changed. Light is passedwith a certain wavelength into the sensor. Depending on the deformation of thelaser-applied grid of the sensor, a part of the light is reflected and evaluated with asuitable sensor (interrogator).n Nominal load– Maximum permissible load for normal operation.– The nominal load is preset unit-free.n Rated output– The rated output is a measure of the sensitivity of the resistance bridge independence of the used excitation voltage.– A typical value for a full bridge is 2mV/V, this means at nominal load with an exci-tation voltage of 12V the bridge differential voltage is ±24mV.– The common area is 0.5...4mV/V, depending on the bridge and sensor type.Strain gauge DMSCharacteristics of anstrain gauge DMSVIPA System SLIOAnalog Input031-1CA20 - AI 1x16(24)Bit Strain gauge (DMS) > FunctionalityHB300 | SM-AIO | | en | 17-05180