18KDYH2 MSYSTEM | Alldatasheet

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Technical content

MODEL: 18KDYH2 18KDYH2 SPECIFICATIONS ES-0430 Rev.3 Page 1/5 http://www.m-system.co.jp/ Rack-mounted DCS Signal Conditioners 18K-RACK CURRENT LOOP SUPPLY (applicable to HART signal, opencircuit detection selectable) Functions & Features

  • Powers a 4 – 20 mA DC current loop
  • Isolates and relays HART signals
  • Shortcircuit protection
  • Opencircuit detection selectable
  • Module can be retracted without removing wiring for an insulation test Typical Applications
  • 2-wire HART transmitters MODEL: 18KDYH2–A[1]–R[2]

ORDERING INFORMATION

  • Code number: 18KDYH2-A[1]-R[2] Specify a code from below for each of [1] and [2]. (e.g. 18KDYH2-A6A-R/B/RE) INPUT Current A: 4 - 20 mA DC (Input resistance approx. 250Ω) [1] OUTPUT 1 / OUTPUT 2 6A: 1 – 5 V DC (Load resistance 2000 Ω min.) / 4 – 20 mA DC (Applicable to HART signal, load resistance 600 Ω max.)* A6: 4 – 20 mA DC (Applicable to HART signal, load resistance 600 Ω max.)* / 1 – 5 V DC (Load resistance 2000 Ω min.) AA: 4 – 20 mA DC (Applicable to HART signal, load resistance 600 Ω max.)* / 4 – 20 mA DC (Load resistance 500 Ω max.) * 250 Ω ±10% for HART communication POWER INPUT DC Power R: 24 V DC (Operational voltage range 24 V ±10 %, ripple 10 %p-p max.) [2] OPTIONS (multiple selections) Opencircuit detection blank: none /B: Opencircuit detector (Only for HART signal) Connector output polarity reversal blank: none /RE: Connector output polarity reversal (Only for HART signal) 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) and connector 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 +110 % Zero adjustment: -5 to +5 % (front) Span adjustment: 95 to 105 % (front) Open-circuit detection: This function enables the input device to detect open circuit of output circuit isolated from the input circuit. Input current 0 mA when the output loop is open. Photo MOSFET Relay ON Resistance; 3 Ω max. SUPPLY OUTPUT (across the terminals 1 – 2) Output voltage: 24 – 28 V DC with no load

18 V DC at 20 mA

Current rating: ≤ 22 mA DC

  • Shortcircuit Protection Current limited: 30 mA max. Protected time duration: No limit INPUT SPECIFICATIONS ■ DC Current: Input resistor incorporated Input current: ≥ 0 mA OUTPUT SPECIFICATIONS The output goes below 0 % when the input is open. Polarity of connector output is reversed with option code /RE (with connector output polarity reversal).

MODEL: 18KDYH2 18KDYH2 SPECIFICATIONS ES-0430 Rev.3 Page 2/5 http://www.m-system.co.jp/ 18KDYH2 18KBXx Current direction Current direction ˙ Blank (note) ˙ /RE (with connector output polarity reversal) 18KDYH2 18KBXx Current direction Current direction DCS units of various manufactures DCS units of various manufactures Connector Connector HART COMMUNICATION Transmission gain: Approx. -3 dB (within 1 – 3 kHz) measured with 250 Ω at output Loop impedance: 250 Ω ±10 % Communication directions: Bidirectional INSTALLATION Current consumption: Output Code 6A, A6: Approx. 120 mA Output Code AA: Approx. 130 mA Operating temperature: -5 to +55°C (23 to 131°F) Operating humidity: 30 to 90 %RH (non-condensing) Mounting: Standard Rack 18KBXx Weight: 110 g (0.24 lb) 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: 500 V AC @ 1 minute (input to output 1 to output 2 to power to ground)

MODEL: 18KDYH2 18KDYH2 SPECIFICATIONS ES-0430 Rev.3 Page 3/5 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: 18KDYH2 18KDYH2 SPECIFICATIONS ES-0430 Rev.3 Page 4/5 http://www.m-system.co.jp/ SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM ■OUTPUT CODE: 6A 2-WIRE XMTR 250Ω INPUT Note 1: Use either of module or external field terminals. Note 2: For OUTPUT 2, use either of terminals on the front or connector on the rear. *1. Hand-held communicator *2. Included with option /B ■ When used as Isolator■ When used as DC Supply Section A. Field Terminals DC Isolation HART Isolation OUTPUT 2 4 – 20mA DC HHCRL

24 V DC

Detector250Ω Output Driver SZ Output Driver SZ Amplifier OUTPUT 2 OUTPUT 1 POWER HHC*1 HHC Module Field Terminals (Section A) CONNECTOR External Field Terminals (Section A)

MODEL: 18KDYH2 18KDYH2 SPECIFICATIONS ES-0430 Rev.3 Page 5/5 http://www.m-system.co.jp/ ■OUTPUT CODE: A6, AA 2-WIRE XMTR 250Ω INPUT Note 1: Use either of module or external field terminals. Note 2: For OUTPUT 2, use either of terminals on the front or connector on the rear. *1. Hand-held communicator *2. Included with option /B ■ When used as Isolator■ When used as DC Supply Section A. Field Terminals DC Isolation HART Isolation OUTPUT 2 Detector250Ω Output Driver SZ Output Driver SZ Amplifier OUTPUT 2 OUTPUT 1 POWER HHC*1 HHC Module Field Terminals (Section A) CONNECTOR External Field Terminals (Section A) (HHC *1) Specifications are subject to change without notice.