MODEL: 18KDU

18KDU SPECIFICATIONS

ES-0428 Rev.1 Page 1/3

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

Rack-mounted DCS Signal Conditioners 18K-RACK

CURRENT LOOP SUPPLY

(10 – 50 mA / 4 –20 mA loop)

Functions & Features

• 2-wire transmitter circuit with short-circuit protection

• Reposition the shorting pin to switch input signals

between 10 - 50 mA DC and 4 - 20mA DC

• Applicable to smart transmitters

• Can also be used as a 10 - 50 mA DC / 4 - 20 mA DC

isolator

• Module can be retracted without removing wiring for an

insulation test

• Optional power switch

MODEL: 18KDU–66–R[1]

ORDERING INFORMATION

• Code number: 18KDU-66-R[1]

Specify a code from below for [1].

(e.g. 18KDU-66-R/S)

INPUT

Current

10 – 50 mA DC or 4 – 20 mA DC

OUTPUT 1

Voltage

6: 1 – 5 V DC (Load resistance 2000 Ω min.)

OUTPUT 2

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.)

[1] OPTIONS

Power Switch

blank: None

/S: With power switch

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)

Input range selector: Jumper pin on the PCB

The input is factory set to 10 – 50 mA DC. Specify when 4 –

20 mA is required.

SUPPLY OUTPUT

Output voltage: 24 – 28 V DC with no load

Current rating: ≤ 60mA DC

• Shortcircuit Protection

Current limited: Approx. 65 mA

Protected time duration: No limit

INPUT SPECIFICATIONS

■ DC Current:

Input resistor incoporated

110 Ω ±1 % with 10 – 50 mA

260 Ω ±1 % with 4 – 20 mA

OUTPUT SPECIFICATIONS

The output goes below 0 % when the input is open.

INSTALLATION

Current consumption: Approx. 105 mA

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)