ES-1825 Rev.8
18JDN
Rack-mounted DCS Signal Conditioners 18-RACK
CURRENT LOOP SUPPLY
(with square root extractor)
Functions & Features
• Powering a 4 – 20 mA DC current loop
• Shortcircuit protection
• Applicable to smart transmitters
• Usable as Square Root Extractor 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
MODEL: 18JDN–A66–R
ORDERING INFORMATION
• Code number: 18JDN-A66-R
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.)
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
: 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
: Approx. 30 mA
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 18BXx or 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
: 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