ES-0474 Rev.3
18KJDL
Rack-mounted DCS Signal Conditioners 18K-RACK
CURRENT LOOP SUPPLY
(linearizing; field-programmable)
Functions & Features
• 2-wire transmitter circuit with short-circuit protection
• Applicable to smart transmitters
• Segment linearization, square root extraction and temperature linearization are freely configurable via programming unit (model: PU-2x)
• Can also be used as a 4 - 20 mA DC linearizer
• Module can be retracted without removing wiring for an insulation test
• Optional power switch
Typical Applications
• Various 2-wire transmitters
• Providing isolation and linearization for a 2-wire temperature transmitter
• Linearizing weir flowmeter output to provide a linear-to-volume signal
MODEL: 18KJDL–A[1]66–R[2]
ORDERING INFORMATION
• Code number: 18KJDL-A[1]66-R[2]
Specify a code from below for each of [1] and [2].
(e.g. 18KJDL-A366-R/S)
Default setting (table next) will be used if not otherwise specified.
No linearization data will be programmed if you don't specify type of linearization and required data.
• Linearization data
Code 1 segment data: Use Ordering Information Sheet (No. ESU-1669) to specify linearization data.
Code 3 T/C, Code 4 RTD: Specify input sensor type and temperature range.
INPUT
Current
A
: 4 – 20 mA DC (Input resistance 250 Ω)
[1] LINEARIZATION
0
: None
1
: Segment data
2
: Square root extraction
3
: Thermocouple
4
: RTD
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.)
[2] 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
: Approx. -10 to +120 % at 1 – 5 V
Linearization
: 16 points max. represented as percentage of full-scale
Adjustments
: Programming Unit (model: PU-2x); linearization data, zero and span, simulating output, etc.
(Refer to the users manual of JXCON for the adjustments configurable with JXCON.)
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.
LINEARIZATION
•
No linearization
: The output is proportional to the input.
•
Segment data
: 16 points (15 segments) max. within the range of -15.00 to +115.00 % input or output represented as percentage of fullscale
•
Square root extraction
Low-end cutout
: 5 % (output); curve characteristics as in the figure below
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
: ±0.1 % with segment gain ≤ 1 [±0.1 % × gain] with segment gain > 1
Temp. coefficient
: ±0.015 %/°C (±0.008 %/°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