MODEL: 18KDU
Rack-mounted DCS Signal Conditioners 18K-RACK
[1] OPTIONS
Power Switch
blank: None
CURRENT LOOP SUPPLY
(10 – 50 mA / 4 –20 mA loop)
/S: With power switch
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
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
• Module can be retracted without removing wiring for an
insulation test
Output 1: Connector
• Optional power switch
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.
MODEL: 18KDU–66–R[1]
SUPPLY OUTPUT
Output voltage: 24 – 28 V DC with no load
ORDERING INFORMATION
• Code number: 18KDU-66-R[1]
Specify a code from below for [1].
(e.g. 18KDU-66-R/S)
Current rating: ≤ 60mA DC
• Shortcircuit Protection
Current limited: Approx. 65 mA
Protected time duration: No limit
INPUT
Current
INPUT SPECIFICATIONS
■ DC Current:
10 – 50 mA DC or 4 – 20 mA DC
Input resistor incoporated
110 Ω ±1 % with 10 – 50 mA
260 Ω ±1 % with 4 – 20 mA
OUTPUT 1
Voltage
6: 1 – 5 V DC (Load resistance 2000 Ω min.)
OUTPUT SPECIFICATIONS
The output goes below 0 % when the input is open.
OUTPUT 2
Voltage
INSTALLATION
6: 1 – 5 V DC (Load resistance 2000 Ω min.)
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)
POWER INPUT
DC Power
R: 24 V DC
(Operational voltage range 24 V ±10 %, ripple 10 %p-p max.)
18KDU SPECIFICATIONS
ES-0428 Rev.1 Page 1/3
http://www.m-system.co.jp/