MODEL: 18VK
Rack-mounted DCS Signal Conditioners 18-RACK
[2] OUTPUT 2
Current
A: 4 – 20 mA DC (Load resistance 600 Ω max.)
Voltage
SIGNAL CONVERTER
(fast response)
6: 1 – 5 V DC (Load resistance 2000 Ω min.)
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
POWER INPUT
DC Power
R: 24 V DC
(Operational voltage range 24 V ±10 %, ripple 10 %p-p max.)
Typical Applications
• Isolation between control room and field instrumentation
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)
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)
INPUT SPECIFICATIONS
■ DC Current: Input resistor incorporated
■ DC Voltage: 0 – 300 V DC
Minimum span: 3 mV
• Special input range (For code 0)
[1] INPUT
Offset: Max. 1.5 times span
Input Resistance
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
Span 3 – 10 mV : ≥ 10 kΩ
Span 10 – 100 mV : ≥ 10 kΩ
Span 0.1 – 1 V : ≥ 100 kΩ
Span ≥ 1 V : ≥ 1 MΩ
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 SPECIFICATIONS
With the input voltage code 3, 4, 5, 6 and current, the
output goes below 0 % when the input is open.
OUTPUT 1
Voltage
6: 1 – 5 V DC (Load resistance 2000 Ω min.)
18VK SPECIFICATIONS
ES-1823 Rev.1 Page 1/3
http://www.m-system.co.jp/