EDS8-3E

PICK-UP DATA SHEET The Pick-up is a device utilizing an induction potentiometer and designed for converting an angle of rotation into electrical signals. The input axis is mechanically turned at a certain angle and this rotation is then converted into electrical signals of 4 to 20mA DC. It is ideally suited for use as a displacement type transmitter. FNL FEATURES 1. High reliability Use of a contactless induction potentiometer assures a long life and high reliability. 2. Various specifications available The Pick-up can be equipped with flameproofing, intrinsically safe explosionproofing, a large indicator, an arrester and other devices. 3. Easy maintenance and handling The Pick-up is compact and lightweight, and zero and span adjustments plus output signal checks can all be easily made on the front panel. Front view SPECIFICATIONS Input angle of rotation: 0 to 22.5°, 0 to 90° or 0 to 270° Excessive input rotation angle: Approx. 11° (at 0 to 22.5° or 0 to 90°) Approx. 4° (at 0 to 270°) (Rotation is restricted below 0 or above 100%) Input rotation torque: Less than 0.02N∞cm{2.04gf∞cm} Direction of rotation: Counterclockwise (when viewed from a point facing the shaft extension) or clockwise Output signal: 4 to 20mA DC Allowable load resistance: 0 to 550Ω (at 24V DC) Power supply: 13 to 33V DC (26V DC or less with intrinsically safe explosionproofing) (27V DC or less with arrester) Wiring system: 2 wire system Ambient temperature: –30 to +80°C (50 ° C max. with intrinsically safe explosionproofing) (60°C max. with arrester) (70°C max. with flameproofing) Back view Response speed: Time constant of 0.1 sec or less Zero and span adjustment width: ± 5% Waterproof structure: JIS C 0920 immersion-proof type (Note that input shaft section is not of sealed structure. A 70mm dia. seal 0 ring must be used on its circumference) Explosionproof structure: Intrinsically safe explosionproofing JIS i3nG5 Flameproofing JIS d2G4 EDS8-3e Date Apr. 10, 1992 FNL External dimensions (HxWxD): 150 x 183 x 167 (197)mm Dimension in parenthesis is when field indicator is equipped Mass (weight): Approx. 2.7kg Conduit connection: G1/2 Finish color: Silver (epoxy and polyurethane double coating) (Lid alone is back, N3, when field indicator is equipped) Characteristics: (Indicated in % of span for standard product) Allowance: Max. ± 0.5% at 0 to 22.5 ° Max. ± 1.0% at 0 to 90 °, or 0 to 270 ° Linearity: Max. ± 0.5% at 0 to 22.5 ° Max. ± 1.0% at 0 to 90 °, or 0 to 270 ° Repeatability: Max. ± 0.1% Ripple content: ± 1.5% peak to peak (at approx. 25 kHz) Temperature effect (zero point): 1.2%/60°C span at 0 to 60 °C Power supply fluctuation (zero point): 0.04%/2V Optional specifications Field indicator: Built-in electronics casing 1.5 class 0 to 100% linear or square scale Arrester: Built-in electronics casing Acid and alkaliproof treatment: Mounting screws and washers, SUS304 Scope of delivery: Main unit FUNDAMENTAL BLOCK DIAGRAM Input rotation angle Induction potentiometer Synchronous rectifier circuit Differential amplifier circuit Current converter circuit Signal current Oscillating circuit 2 CODE SYMBOLS 12345678 9 10 F NL 4 0 Description Input rotation angle, rotating direction Input rotation Rotating direction(*) Remarks angle 11 12 2 2 3 4 4 1 2 1 1 2 0 to 90°C 0 to 22.5°C 0 to 22.5°C 0 to 270°C CCW CW CCW CW CCW CCW CW Zero point stopper equipped (impossible without case) Enclosure, indicator, arrester, output signal Explosionproof 0A 1A 1K 1D 1L 1G 1M 1B 1E 1H 2A 2K 2D 2L 2G 2M 3A 3K 3D 3L 3G 3M Without case Non-explosionproof Yes/No — — — Field indicator Scale — — — 0 to 100% linear 0 to 100% linear 0 to 100% square 0 to 100% square — 0 to 100% linear 0 to 100% square — — 0 to 100% linear 0 to 100% linear 0 to 100% square 0 to 100% square — — 0 to 100% linear 0 to 100% linear 0 to 100% square 0 to 100% square Arrester — — — — — — — — — — — — — 4 to 20mA DC 4 to 20mA DC Output signal 4 to 20mA DC 4 to 20mA DC Intrinsic safety (JIS i3nG5) — Flameproof (JIS d2G4, Flameproof threaded-joint metal conduit type) — — 4 to 20mA DC Flameproof (JIS d2G4, Flameproof packing type) — — Y B Treatment Standard Acid and alkaliproof treatment Note: *The rotating direction refers to rotation when viewed from a point facing the shaft extension: CW: clockwise CCW: Counter-clockwise 3 FNL PRINCIPLE OF INDUCTION POTENTIOMETER Shortring ring Ring core 1 Ring core 2 Detecting coil Air gap S1 S2 Exciting coil Synchronous rectifier Amplifier Output When the shorting ring is located at the center, the magnetic flux at left and right is equal and the voltages produced at detecting coils S 1 a nd S2 a re equal. But if the ring is rotates to the right for example, then the flux at S 1 increase and that at S2 will decrease. This difference is produced and converted into an output voltage proportional to the ring displacement (input rotation angle). EXAMPLE OF CONFIGURATION ACCORDING TO POWER SUPPLY Receiving instrument 1 to 5V DC Pick-up FNL 4 to 20mA DC Distributor PXM 24V DC System power Supply PXJ With 24V DC power supply 100V AC Pick-up FNL 4 to 20mA DC Distributor PWM 1 to 5V DC Receiving instrument With 100V/24V AC power supply 100V AC or 24V AC 4 OUTLINE DIAGRAM (Unit:mm) Viewed from P 190 108 O ring (for sealing) Up φ76 Down Field indicator (Optional) A Conduit connection 150 150 Shround (flameproof only) * Cable gland Details of pointer 3.5 When field indicator equipped 58 φ102 (30) φ2.5 –0.016 20± 0.2 Zero adjustment –0.007 8 3 88 *B Conduit connection M3 5 20 ø15 ø13 5 16 φ70 –0.060 17 –0.036 Mounting screw 4-M6 G1/2 G1/2 P CONNECTION DIAGRAM E 0– 0+ RELATED DEVICES Opener Distributor Load 0 to 550Ω 24V DC ORDERING INFORMATION 1. 2. 3. 4. Product name Code symbols Angle of rotation Direction of rotation 5. Whether explosionproofing, arrester, indicator necessary 6. Other requirements 6 68 Details of "A" Details of "B" 147 15 58 5 FNL Caution on Safety *Before using this product, be sure to read its instruction manual in advance. Head Office Gate City Ohsaki, East Tower, 11-2, Osaki 1-chome, Shinagawa-ku, Tokyo 141-0032, Japan http://www.fesys.co.jp/eng Instrumentation Div. International Sales Dept. No.1, Fuji-machi, Hino-city, Tokyo, 191-8502 Japan Phone: 81-42-585-6201, 6202 Fax: 81-42-585-6187 http://www.fic-net.jp/eng Information in this catalog is subject to change without notice. Printed in Japan