ES-1845 Rev.10
18JN
Rack-mounted DCS Signal Conditioners 18-RACK
SQUARE ROOT EXTRACTOR
Functions & Features
• Providing two DC outputs proportional to the root of the input signal
• Low-end cutout
• Second channel output available at the front terminals and at the Standard Rack connector
Typical Applications
• Converting differential pressure to flow
MODEL: 18JN–[1]66–R
ORDERING INFORMATION
• Code number: 18JN-[1]66-R
Specify a code from below for [1].
(e.g. 18JN-666-R)
[1] INPUT
Current
A
: 4 – 20 mA DC (Input resistance 250 Ω)
H
: 10 – 50 mA DC (Input resistance 100 Ω)
Voltage
6
: 1 – 5 V DC (Input resistance 1 MΩ min.)
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); zero and span, etc.
(Refer to the users manual of JXCON for the adjustments configurable with JXCON.)
INPUT SPECIFICATIONS
■
DC Current
: Input resistor incorporated
OUTPUT SPECIFICATIONS
The output turns to 0 % when the input is open.
INSTALLATION
Current consumption
: Approx. 60 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
: ±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