# MODEL: JFT Plug-in Signal Conditioners M-UNIT FILTER/LAG TRANSMITTER

MODEL: JFT Plug-in Signal Conditioners M-UNIT FILTER/LAG TRANSMITTER (field-programmable) Functions & Features • Providing various filter functions which eliminate unnecessary elements in the input signals • Microprocessor based • On-site calibration via hand-held programmer PU-2x • Field-programmable input range • Isolation up to 2000 V AC • High-density mounting Typical Applications • Level control; eliminating drifts in the input signal caused by pumps 50 (1.97) 80 (3.15) 127 (5) mm (inch) MODEL: JFT[1]–[2][3]–[4] •Code number: JFT[1]-[2][3]-[4] Specify a code from below for each [1] through [4]. (e.g. JFT1-6A-B) •Use Ordering Information Sheet (No. ESU-1679) to specify parameters. •Parameters (See "Functions" section.) •Special input and output ranges (For codes U1,U2, U3, Z & 0) 1: Moving average output 2: Dead-time computing 3: Delay buffer 4: Lead-time computing 5: Ramp buffer 6: Mean average output [2] INPUT Current A: 4 – 20 mA DC (Input resistance 250 Ω) http://www.m-system.co.jp/ [3] OUTPUT Current A: 4 – 20 mA DC (Load resistance 750 Ω max.) B: 2 – 10 mA DC (Load resistance 1500 Ω max.) C: 1 – 5 mA DC (Load resistance 3000 Ω max.) D: 0 – 20 mA DC (Load resistance 750 Ω max.) E: 0 – 16 mA DC (Load resistance 900 Ω max.) F: 0 – 10 mA DC (Load resistance 1500 Ω max.) G: 0 – 1 mA DC (Load resistance 15 kΩ max.) Z: Specify current (See OUTPUT SPECIFICATIONS) Voltage 1: 0 – 10 mV DC (Load resistance 10 kΩ min.) 2: 0 – 100 mV DC (Load resistance 100 kΩ min.) 3: 0 – 1 V DC (Load resistance 1000 Ω min.) 4: 0 – 10 V DC (Load resistance 10 kΩ min.) 5: 0 – 5 V DC (Load resistance 5000 Ω min.) 6: 1 – 5 V DC (Load resistance 5000 Ω min.) 4W: -10 – +10 V DC (Load resistance 10 kΩ min.) 5W: -5 – +5 V DC (Load resistance 5000 Ω min.) 0: Specify voltage (See OUTPUT SPECIFICATIONS) [4] POWER INPUT ORDERING INFORMATION [1] FUNCTION H: 10 – 50 mA DC (Input resistance 100 Ω) Voltage 6: 1 – 5 V DC (Input resistance 1 MΩ min.) U1: Range ±100 mV; minimum span 3 mV U2: Range ±1000 mV; minimum span 30 mV U3: Range ±10 V; minimum span 0.3 V AC Power B: 100 V AC C: 110 V AC D: 115 V AC F: 120 V AC G: 200 V AC H: 220 V AC J: 240 V AC DC Power S: 12 V DC R: 24 V DC V: 48 V DC RELATED PRODUCTS • JX configurator connection kit (model: JXCON) • Programming Unit (model: PU-2x) GENERAL SPECIFICATIONS Construction: Plug-in Connection: M3.5 screw terminals Housing material: Flame-resistant resin (black) JFT SPECIFICATIONS ES-1679 Rev.6 Page 1/5 MODEL: JFT Isolation: Input to output to power Overrange output: Approx. -10 to +120 % at 1 – 5 V Zero adjustment: -5 to +5 % (front) Span adjustment: 95 to 105 % (front) Adjustments: Programming Unit (model: PU-2x); function and parameters, input range, zero and span, etc. (Input range can be changed with Codes U1, U2 or U3 and limited within ranges of each code type.) setting Line voltage effect: ±0.1 % over voltage range Insulation resistance: ≥ 100 MΩ with 500 V DC Dielectric strength: 2000 V AC @1 minute (input to output to power to ground) INPUT SPECIFICATIONS • DC Current: Shunt resistor attached to the input terminals (0.5 W) •DC Voltage: -10 – +10 V DC Minimum span: 3 mV Offset: Max. 3 times span Input resistance (Input Range: Input Resistance) U1: ±100 mV: 20 kΩ min. U2: ±1000 mV: 20 kΩ min. U3: ±10 V: 1 MΩ min. Default setting (table below) will be used if not otherwise specified. U1: 0 – 100 mV DC U2: 0 – 1 V DC U3: 0 – 10 V DC OUTPUT SPECIFICATIONS • DC Current: 0 – 20 mA DC Minimum span: 1 mA Offset: Max. 1.5 times span Load resistance: Output drive 15 V max. • DC Voltage: -10 – +20 V DC Span: Min. 5 mV, max. 20 V Offset: Max. 1.5 times span Load resistance: Output drive 1 mA max.; at ≥ 0.5 V INSTALLATION Power input •AC: Operational voltage range: rating ±10 %, 50/60 ±2 Hz, approx. 3 VA •DC: Operational voltage range: rating ±10 %, ripple 10 %p-p max., approx. 2 W (90 mA at 24 V) Operating temperature: -5 to +55°C (23 to 131°F) Operating humidity: 30 to 90 %RH (non-condensing) Mounting: Surface or DIN rail Weight: 350 g (0.77 lbs) PERFORMANCE in percentage of span Accuracy: ±0.1 % Temp. coefficient: ±0.015 %/°C (±0.008 %/°F) Response time: ≤ 0.5 sec. (0 – 90 %) without any function http://www.m-system.co.jp/ JFT SPECIFICATIONS ES-1679 Rev.6 Page 2/5 MODEL: JFT DIMENSIONS unit: mm (inch) CLAMP (top & bottom) 20 (.79) 7.8 (.31) 5 4 3 7 8 1 2 2–4.5 (.18) dia. MTG HOLE 15 (.59) deep 8–M3.5 SCREW 50 (1.97) 6 80 (3.15) 80 (3.15) 35.4 (1.39) DIN RAIL 35mm wide 107 (4.21) 40 (1.57) 127 (5) [3.3 (.13)] 50 (1.97) • When mounting, no extra space is needed between units. TERMINAL ASSIGNMENTS unit: mm (inch) 6 5 4 3 7 8 1 2 12 (.47) INPUT RESISTOR (model: REM) Input shunt resistor attached for current input. SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM Isolation + INPUT R – * 3 Low Drift Amplifier Digital Computation Z S Output Driver 1 + OUTPUT 4 2 – 5 7 U(+) 6 8 V(–) POWER PU-2❑ MODULAR JACK SERIAL TRANSMISSION LINE Base Socket *Input shunt resistor attached for current input. http://www.m-system.co.jp/ JFT SPECIFICATIONS ES-1679 Rev.6 Page 3/5 MODEL: JFT FUNCTIONS ■ MOVING AVERAGE OUTPUT (model: JFT1) The JFT1 samples input signals every H seconds and outputs proportionally to an average of N numbers of sampled data. When a new input is sampled after another H seconds, it gives up the oldest sample and calculates a new average including the latest sample and outputs proportionally. INPUT t H H N numbers N numbers H : sampling cycle (0.1 to 100.0 seconds adjustable) N : number of samples to be calculated (1 to 8 adjustable) average OUTPUT t •Step Input with Dead-Time ■ DEAD-TIME COMPUTING (model: JFT2) The JFT2 does not respond to an input signal for a preset dead-time duration. In addition, with adjusting a time constant T, it generates a first order lag output after the dead-time. X0 (s) = e –Ls 1+Ts X1 (s) + H X N (s) X0 : output X1 : input Dead Time = H X N (s) (H ≤ T) H : sampling cycle (0.1 to 100.0 seconds adjustable) N : numbers of samples to be calculated (1 to 8 adjustable) T : time constant (0 to 100.0 seconds adjustable) INPUT 0 t OUTPUT 0 t HxN •Step Input with Dead-Time Plus Time Constant INPUT 0 t OUTPUT 0 HxN ■ DELAY BUFFER (model: JFT3) The JFT3 generates a first order lag output. X0 (s) = 1 1+Ts T t •Step Input with Time Constant INPUT X1 (s) X0 : output X1 : input T : time constant (0 to 100.0 second adjustable) 0 t OUTPUT 0 T http://www.m-system.co.jp/ JFT SPECIFICATIONS t ES-1679 Rev.6 Page 4/5 MODEL: JFT ■ LEAD-TIME COMPUTING (model: JFT4) •Step Input with Time Constant (Lead) The JFT4 operates a lead-time equation. INPUT X0 (s) = (1 + T s) X1 (s) 0 X0 : output X1 : input T : lead-time constant (0 to 100.0 seconds adjustable) t OUTPUT 0 t T •Step Input with Rate-of-Change Limit ■ RAMP BUFFER (model: JFT5) The JFT5 output does not change faster than a preset maximum rate, positive CP and negative CN, no matter how fast its input changes. INPUT 0 CP : maximum rate of positive output change (0.00 to 200.00%/second adjustable) CN: maximum rate of negative output change (0.00 to 200.00%/second adjustable) t OUTPUT 0 CN CP t •Example (N=5, U-1, L=1) ■ MEAN AVERAGE OUTPUT (model: JFT6) The JFT6 samples input signals every H seconds and, excluding U numbers of largest samples and L numbers of smallest samples, outputs proportionally to an average of the rest [N – (U + L)] of sampled data. When the number of samples to be calculated equals 0 or less, it outputs an error. INPUT t IN 1 IN 2 OUTPUT H : sampling cycle (0.1 to 100.0 seconds adjustable) N : number of samples to be calculated (2 to 8 adjustable) U : number of largest samples to be cut off (0 to 7 adjustable) L : number of smallest samples to be cut off (0 to 7 adjustable) t OUT 1 OUT 2 Specifications are subject to change without notice. http://www.m-system.co.jp/ JFT SPECIFICATIONS ES-1679 Rev.6 Page 5/5

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