18SN MSYSTEM | Alldatasheet

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Technical content

MODEL: 18SN 18SN SPECIFICATIONS ES-1819 Rev.8 Page 1/4 http://www.m-system.co.jp/ Rack-mounted DCS Signal Conditioners 18-RACK INPUT LOOP POWERED ISOLATOR Functions & Features

  • Loop-powered design eliminates output loop power supply
  • 500 V DC input-to-output isolation
  • 350 Ω output drive with 4 – 20 mA Typical Applications
  • Isolation between control room and field instrumentation, between telemetering system and input device
  • Eliminates ground problems in existing systems thanks to easiness of application without requiring additional power wiring MODEL: 18SN–[1][2]0

ORDERING INFORMATION

  • Code number: 18SN-[1][2]0 Specify a code from below for each of [1] and [2]. (e.g. 18SN-A60) [1] INPUT Current A: 4 – 20 mA DC H: 10 – 50 mA DC [2] OUTPUT 1 Current A: 4 – 20 mA DC Voltage 6: 1 – 5 V DC OUTPUT 2 0: None GENERAL SPECIFICATIONS Construction: Rack-mounted; terminal access via screw terminals on the front and connector on the rear; terminal cover provided Connection Input: M3.5 screw terminals (torque 0.8 N·m) Output: M3.5 screw terminals (torque 0.8 N·m) and connector Screw terminal: Nickel-plated steel Isolation: Input to output Zero adjustment (front) Voltage output: -5 to +5 % Current output: -0.5 to +0.5 % Span adjustment (front) Voltage output: 95 to 105 % Current output: 98.5 to 101.5 % INPUT & OUTPUT ■ Input 4 – 20 mA DC / Output 1 – 5 V DC Equivalent input impedance: Approx. 250 Ω with 20 mA input Operational range: 3 – 22 mA DC (Accuracy is assured within 4 – 22 mA) Load resistance: ≥ 50 kΩ ■ Input 10 – 50 mA DC / Output 1 – 5 V DC Equivalent input impedance: Approx. 100 Ω with 50 mA input Operational range: 7 – 55 mA DC (Accuracy is assured within 8 – 55 mA) Load resistance: ≥ 50 kΩ ■ Input 4 – 20 mA DC / Output 4 – 20 mA DC Equivalent input impedance: 230 Ω plus load resistance with 20 mA input Operational range: 3 – 22 mA DC (Accuracy is assured within 4 – 22 mA) Load resistance: 50 – 350 Ω (min. 50 Ω required for adequate operation) ■ Input 10 – 50 mA DC / Output 4 – 20 mA DC Equivalent input impedance: 90 Ω + [load resistance×0.16] with 50 mA input Operational range: 7 – 55 mA DC (Accuracy is assured within 8 – 55 mA) Load resistance: 50 – 600 Ω (min. 50 Ω required for adequate operation)
  • INPUT 4 – 20 mA DC / OUTPUT 1 – 5 V DC INPUT CURRENT [mA] 4 12 20 5.0 approx. 3.7 VOLTAGE [V] ACROSS INPUT TERMINALS 3.0 approx. 5.0 4.0

MODEL: 18SN 18SN SPECIFICATIONS ES-1819 Rev.8 Page 2/4 http://www.m-system.co.jp/

  • INPUT 10 – 50 mA DC / OUTPUT 1 – 5 V DC INPUT CURRENT [mA] 10 30 50 5.0 approx. 3.7 VOLTAGE [V] ACROSS INPUT TERMINALS 3.0 approx. 5.0 4.0
  • INPUT 4 – 20mA DC / OUTPUT 4 – 20 mA DC INPUT CURRENT [mA] 4 12 20 10.0 VOLTAGE [V] ACROSS INPUT TERMINALS 3.0 approx. 5.6 (load 50Ω ) 6.0 12.0 approx. 5.0 8.0 approx. 3.8 approx. 9.6 (load 250Ω ) approx. 4.6 approx. 11.6 (load 350Ω )
  • INPUT 10 – 50 mA DC / OUTPUT 4 – 20 mA DC INPUT CURRENT [mA] 10 30 50 10.0 VOLTAGE [V] ACROSS INPUT TERMINALS 3.0 approx. 4.9 (load 50Ω ) 6.0 approx. 4.7 8.0 approx. 3.8 approx. 6.5 (load 250Ω ) approx. 4.1 approx. 9.3 (load 600Ω ) INSTALLATION Operating temperature: -5 to +55°C (23 to 131°F) Operating humidity: 30 to 90 %RH (non-condensing) Mounting: Standard Rack 18BXx or 18KBXx Weight: 150 g (0.33 lb) PERFORMANCE in percentage of span Accuracy: ±0.1 % Temp. coefficient Voltage output: ±0.015 %/°C (±0.008 %/°F) Current output: ±0.02 %/°C (±0.01 %/°F) Response time Voltage output: ≤ 0.5 sec. (0 – 90 %) Current output: Approx. 15 msec. (0 – 90 %) Load effect (current output) 4 – 20 mA input: 0.015 %/Ω (50 – 150 Ω) 10 – 50 mA input: 0.015 %/Ω (50 – 100 Ω) (The unit is calibrated with 250 Ω load at the factory.) Insulation resistance: ≥ 100 MΩ with 500 V DC Dielectric strength: 500 V AC @ 1 minute (input to output)

1500 V AC @ 1 minute

(input or output to ground)

MODEL: 18SN 18SN SPECIFICATIONS ES-1819 Rev.8 Page 3/4 http://www.m-system.co.jp/ EXTERNAL DIMENSIONS unit: mm (inch) 110 (4.33 ) 93 (3.66) 24 (.94) 7 (.28) 78 (3.07)32 (1.26) 8–M3.5 SCREW 7 (.28) 2–M3 SCREW TERMINAL ASSIGNMENTS 1 2 3 4 7 8 5 6

MODEL: 18SN 18SN SPECIFICATIONS ES-1819 Rev.8 Page 4/4 http://www.m-system.co.jp/ SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM INPUT Chopper Buffer Amplifier Z S OUTPUT Inverter Rectifier ■VOLTAGE OUTPUT INPUT 1 + S OUTPUT Inverter Isolation Load Effect Compensation Z ■CURRENT OUTPUT CONNECTOR CONNECTOR OUTPUT OUTPUT Specifications are subject to change without notice.