MODEL: 18VK

18VK SPECIFICATIONS

ES-1823 Rev.1 Page 1/3

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

Rack-mounted DCS Signal Conditioners 18-RACK

SIGNAL CONVERTER

(fast response)

Functions & Features

• Converting a DC input into two standard process signals

• Second channel output available at the front terminals

and at the Standard Rack connector

• Fast response type

Typical Applications

• Isolation between control room and field instrumentation

MODEL: 18VK–[1]6[2]–R

ORDERING INFORMATION

• Code number: 18VK-[1]6[2]-R

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

(e.g. 18VK-166-R)

• Special input range (For code 0)

[1] INPUT

Current

A: 4 – 20 mA DC (Input resistance 250 Ω)

D: 0 – 20 mA DC (Input resistance 50 Ω)

G: 0 – 1 mA DC (Input resistance 1000 Ω)

H: 10 – 50 mA DC (Input resistance 100 Ω)

Voltage

1: 0 – 10 mV DC (Input resistance 10 kΩ min.)

2: 0 – 100 mV DC (Input resistance 100 kΩ min.)

3: 0 – 1 V DC (Input resistance 1 MΩ min.)

4: 0 – 10 V DC (Input resistance 1 MΩ min.)

5: 0 – 5 V DC (Input resistance 1 MΩ min.)

6: 1 – 5 V DC (Input resistance 1 MΩ min.)

0: Specify voltage (See INPUT SPECIFICATIONS)

OUTPUT 1

Voltage

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

[2] 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)

INPUT SPECIFICATIONS

■ DC Current: Input resistor incorporated

■ DC Voltage: 0 – 300 V DC

Minimum span: 3 mV

Offset: Max. 1.5 times span

Input Resistance

Span 3 – 10 mV : ≥ 10 kΩ

Span 10 – 100 mV : ≥ 10 kΩ

Span 0.1 – 1 V : ≥ 100 kΩ

Span ≥ 1 V : ≥ 1 MΩ

OUTPUT SPECIFICATIONS

With the input voltage code 3, 4, 5, 6 and current, the

output goes below 0 % when the input is open.