18VS-A66-R

18VS

Rack-mounted DCS Signal Conditioners 18-RACK

SIGNAL CONVERTER

Functions & Features
• Converting a DC input into two standard process **s 
• Second channel output available at the front terminals and at the Standard Rack connector
Typical Applications
• Isolation between control room and field instrumentation
 

MODEL: 18VS–[1]6[2]–R

ORDERING INFORMATION
• Code number: 18VS-[1]6[2]-R
Specify a code from below for each of [1] and [2].
  (e.g. 18VS-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.

INSTALLATION
Current consumption: Approx. 35 mA with voltage output
Approx. 65 mA with current output
Operating temperature: -5 to +55°C (23 to 131°F)
Operating humidity: 30 to 90 %RH (non-condensing)
Mounting: Standard Rack 18BXx or 18KBXx
Weight: 150 g (0.33 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: ±0.1 % over voltage range
Insulation resistance: ≥ 100 MΩ with 500 V DC
Dielectric strength: 1500 V AC @ 1 minute
(input to output 1 or output 2 or power)
500 V AC @ 1 minute
(output 1 to output 2 to power)
1500 V AC @ 1 minute
(input or output or power to ground)

EXTERNAL DIMENSIONS unit: mm (inch)

TERMINAL ASSIGNMENTS

SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM

M-System Co., Ltd.