ES-0425 Rev.3
18KJDN
Rack-mounted DCS Signal Conditioners 18K-RACK
CURRENT LOOP SUPPLY
(with square root extractor)
Functions & Features
• 2-wire transmitter circuit with short-circuit protection
• Applicable to smart transmitters
• Can also be used as a 4 - 20 mA DC square root extractor
• Module can be retracted without removing wiring for an insulation test
• Optional power switch
Typical Applications
• Various 2-wire transmitters
MODEL: 18KJDN–A66–R[1]
ORDERING INFORMATION
• Code number: 18KJDN-A66-R[1]
Specify a code from below for [1].
(e.g. 18KJDN-A66-R/S)
INPUT
Current
A
: 4 – 20 mA DC (Input resistance 250 Ω)
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
RELATED PRODUCTS
• Programming Unit (model: PU-2x)
• PC configurator software (model: JXCON)
Downloadable at our web site.
A dedicated cable is required to connect the module to the PC. Please refer to the internet software download site or the users manual for the PC configurator for applicable cable types.
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
: 0 – 105 % at 1 – 5 V
Adjustments
: Programming Unit (model: PU-2x);
(For settings programable with JXCON, refer to its instruction manual)
•Zero and span
Low-end cutout
: Output is proportional to input when the output is less than approx. 5 %
SUPPLY OUTPUT
Output voltage
: 24 – 28 V DC with no load
Current rating
: ≤ 22 mA DC
•
Shortcircuit Protection
Current limited
: 30 mA max.
Protected time duration
: No limit
INPUT SPECIFICATIONS
■
DC Current
: Input resistor incorporated
OUTPUT SPECIFICATIONS
The output goes below 0 % when the input is open.
INSTALLATION
Current consumption
: Approx. 85 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)
PERFORMANCE in percentage of span
Accuracy
: ±0.25 % (input 1 – 100 %)
Temp. coefficient
: ±0.03 %/°C (±0.02 %/°F)
Response time
: ≤ 0.5 sec. (0 – 90 %)
Line voltage effect
Output signal
: ±0.1 % over voltage range
Insulation resistance
: ≥ 100 MΩ with 500 V DC
Dielectric strength
: 500 V AC @ 1 minute (input to output 1 to output 2 to power to ground)
EXTERNAL VIEW
EXTERNAL DIMENSIONS unit: mm [inch]
TERMINAL ASSIGNMENTS
SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM