18DY MSYSTEM | Alldatasheet

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Technical content

MODEL: 18DY 18DY SPECIFICATIONS ES-1826 Rev.9 Page 1/3 http://www.m-system.co.jp/ Rack-mounted DCS Signal Conditioners 18-RACK CURRENT LOOP SUPPLY Functions & Features

  • Powering a 4 – 20 mA DC current loop
  • Shortcircuit protection
  • Usable as Isolator for 4 – 20 mA DC signals
  • Second channel output available at the front terminals and at the Standard Rack connector
  • Applicable to smart transmitters Typical Applications
  • Various 2-wire transmitters MODEL: 18DY–A6[1]–R

ORDERING INFORMATION

  • Code number: 18DY-A6[1]-R Specify a code from below for [1]. (e.g. 18DY-A66-R) INPUT Current A: 4 – 20 mA DC (Input resistance 276 Ω) OUTPUT 1 Voltage 6: 1 – 5 V DC (Load resistance 2000 Ω min.) [1] OUTPUT 2 Current A: 4 – 20 mA DC (Load resistance 600 Ω max.) Voltage 6: 1 – 5 V DC (Load resistance 2000 Ω min.) POWER INPUT DC Power R: 24 V DC (Operational voltage range 24 V ±10 %, ripple 10 %p-p max.) 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 1: Connector Output 2: M3.5 screw terminals (torque 0.8 N·m) and connector Power input: Supplied from connector Screw terminal: Nickel-plated steel Isolation: Input to output 1 to output 2 to power Overrange output: Approx. -10 to +120 % at 1 – 5 V Zero adjustment: -5 to +5 % (front) Span adjustment: 95 to 105 % (front) SUPPLY OUTPUT Output voltage: 24 – 28 V DC with no load Current rating: ≤ 22 mA DC
  • Shortcircuit Protection Current limited: 35 mA max. Protected time duration: No limit INPUT SPECIFICATIONS ■ DC Current: Input resistor incorporated OUTPUT SPECIFICATIONS The output goes below 0 % when the input is open. INSTALLATION Current consumption: Approx. 65 mA with voltage output Approx. 95 mA with current output 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)

MODEL: 18DY 18DY SPECIFICATIONS ES-1826 Rev.9 Page 2/3 http://www.m-system.co.jp/ PERFORMANCE in percentage of span Accuracy: ±0.1 % Temp. coefficient: ±0.015 %/°C (±0.008 %/°F) Response time: ≤ 0.5 sec. (0 – 90 %) Line voltage effect Supply output: ±3 % over voltage range Output signal: ±0.1 % over voltage range Insulation resistance: ≥ 100 MΩ with 500 V DC Dielectric strength: 1500 V AC @ 1 minute (input to output 1 or output 2 or power)

500 V AC @ 1 minute

(output 1 to output 2 to power)

1500 V AC @ 1 minute

(input or output or power to ground) 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: 18DY 18DY SPECIFICATIONS ES-1826 Rev.9 Page 3/3 http://www.m-system.co.jp/ SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM OUTPUT 2 Isolation SZ Output Driver SZ Output Driver CONNECTOR OUTPUT 1 OUTPUT 2 POWER 250Ω Voltage / Duty Cycle Current Limiter + 1 2-WIRE TRANSMITTER V – (1 – 5V DC) MONITOR 250Ω No Connection 4 – 20mA DC ■ When Used as Isolator For OUTPUT 2 with current output, use eihter of terminals on the front or connector on the rear. Specifications are subject to change without notice.