MODEL: 18KDY

18KDY SPECIFICATIONS

ES-0426 Rev.7 Page 1/3

http://www.m-system.co.jp/

Rack-mounted DCS Signal Conditioners 18K-RACK

CURRENT LOOP SUPPLY

Functions & Features

• Powering a 4 – 20 mA DC current loop

• Shortcircuit protection

• Applicable to smart transmitters

• Usable as Isolator for 4 – 20 mA DC signals

• Module can be retracted without removing wiring for an

insulation test

• Power switch optional

Typical Applications

• Various 2-wire transmitters

MODEL: 18KDY–A6[1]–R[2]

ORDERING INFORMATION

• Code number: 18KDY-A6[1]-R[2]

Specify a code from below for each of [1] and [2].

(e.g. 18KDY-A66-R/SL)

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.)

[2] OPTIONS

Power Switch

blank: None

/S: With power switch

/SL: With power switch (with green LED)

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 +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. 70 mA with /SL)

Approx. 95 mA with current output

(approx. 100 mA with /SL)

Operating temperature: -5 to +55°C (23 to 131°F)

Operating humidity: 30 to 90 %RH (non-condensing)

Mounting: Standard Rack 18KBXx

Weight: 150 g (0.33 lb)