R30A AC Operated, Light Weight RVDT SPECIFICATIONS AC operation 60 degree angular sensing range Light weight Non-contact electrical design Wide operating temperature range Size 11 servo mount Anodized aluminum housing The R30A RVDT (Rotary Variable Differential Transformer) is an angular position sensor that incorporates a proprietary non- contact design which dramatically improves long term reliability when compared to other traditional rotary devices such as synchros, resolvers and potentiometers. This unique design eliminates assemblies that degrade over time such as slip rings, rotor windings, contact brushes and wipers, without FEATURES sacrificing accuracy. High accuracy Infinite resolution High reliability and performance are achieved through the use Long term reliability of a specially shaped rotor and wound coil that together Wide -55 to +150 C operating temp simulates the linear displacement of a Linear Variable range Differential Transformer (LVDT). Rotational movement of the Rugged anodized aluminum rotor shaft results in a linear change in the amplitude of the output signal, directly proportional to the shaft angle change, housing while the phase of this output signal indicates the direction of Shielded ABEC 3 precision bearings displacement from the null point. Non-contact electromagnetic coupling of the rotor provides infinite resolution thus enabling absolute measurements to a fraction of a degree. APPLICATIONS Valve position AC operation eliminates the need for integrated signal Machine tool equipment conditioning components, thereby offering the user an Rotary actuator feedback extremely wide operating temperature range of -55C to Dancer arm position +150C. Factory calibrated to operate over a 30 degree Process control range, the R30A offers a non-linearity of less than 0.25% of full range. Extended range operation up to a maximum of 60 degrees is possible with increased non-linearity. Packaged in a small, size 11 servo mount, aluminum housing with flying lead termination, the R30A is ideal for space restrictive applications. SENSOR SOLUTIONS /// R30A Rev 9 07/2017 Page 1 R30A AC Operated, Light Weight RVDT PERFORMANCE SPECIFICATIONS ELECTRICAL SPECIFICATIONS Parameter 10kHz Input Frequency (recommended) 2.5kHz Input Frequency Angular range, degrees 30 40 60 30 40 60 Non-linearity, % of FR 0.25% 1% 2% 0.25% 1% 2% Output at range ends (*) 87mV/V 116mV/V 174mV/V 69 mV/V 92 mV/V 138 mV/V Sensitivity 2.9 mV/V/degree 2.3 mV/V/degree Temp coefficient of sensitivity 0.02%/F 0.036%/C , 20 to +160F -7 to +71C Not specified Input / Output impedances 370 / 1300 135 / 600 Phase shift +3 +35 Input voltage and frequency 3 VRMS 2.5 to 10 kHz (10kHz recommended) Null voltage 0.5% of FRO, maximum ENVIRONMENTAL AND MECHANICAL SPECIFICATIONS Operating temperature -67F to +300F -55C to 150C Mechanical angular range 360 degrees (no stops) Bearings Shielded ABEC 3 precision Shaft diameter 3/16 inch 4.76 mm Housing material Aluminum, anodized Mounting Size 11 servo mount per BU-ORD -6 2 -6 2 Moment of inertia 0.53 x 10 inch.lb-force.second 0.61 x 10 Kg-force.cm.second Maximum torque, unbalance 0.004 inch.ounce-force 0.3 gram-force.cm Maximum torque, friction 0.015 inch.ounce-force 1.1 gram-force.cm Shaft load capability 10 lb 4.5Kg Axial 8 lb 3.6 Kg Radial Electrical connection 6 lead wires, AWG 28, PTFE insulation, 12 inches 30cm long Weight 1.3 oz 36 Grams IEC 60529 rating IP60 Notes: All values are nominal unless otherwise noted (*): Unit for output at range ends is millivolt per volt of excitation (input voltage) FR (Full Range) is the angular range, end to end 2xA for A angular range FRO (Full Range Output): Algebraic difference in outputs measured at the ends of the range DIMENSIONS Dimensions are in inch (mm) SENSOR SOLUTIONS /// R30A Rev 9 06/2017 Page 2