ES-1874 Rev.14
18JDL
Rack-mounted DCS Signal Conditioners 18-RACK
CURRENT LOOP SUPPLY
(linearizing; field-programmable)
Functions & Features
• Powering a 4 – 20 mA DC current loop
• Microprocessor based
• Shortcircuit protection
• Applicable to smart transmitters
• Field-programmable linearization data
• Loop testing via hand-held programmer PU-2x
• Usable as Linearizer for 4 – 20 mA DC signals
• Second channel output available at the front terminals and at the Standard Rack connector
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: 18JDL–A[1]66–R
ORDERING INFORMATION
• Code number: 18JDL-A[1]66-R
Specify a code from below for [1].
(e.g. 18JDL-A366-R)
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.)
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)
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 18BXx or 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
: 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