ES-0489 Rev.2
18KYC
Rack-mounted DCS Signal Conditioners 18K-RACK
CONTROL OUTPUT ISOLATOR
Functions & Features
• Takes 4 - 20 mA DC as input
• Opencircuit detection
• Module can be retracted without removing wiring for an insulation test
• Capable of monitoring input signals at front terminals
• Optional power switch
MODEL: 18KYC–AA–R[1]
ORDERING INFORMATION
• Code number: 18KYC-AA-R[1]
Specify a code from below for [1].
(e.g. 18KYC-AA-R/S)
INPUT
Current
A
: 4 – 20 mA DC (Input resistance 250 Ω)
OUTPUT
Current
A
: 4 – 20 mA DC (Load resistance 600 Ω max.)
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
GENERAL SPECIFICATIONS
Construction
: Rack-mounted; terminal access via screw terminals on the front and connector on the rear; terminal cover provided
Connection
Input
: Connector
Input monitor
: M3.5 screw terminals (torque: 0.8 N·m)
Output
: M3.5 screw terminals (torque: 0.8 N·m) and connector
Power
: Supplied from connector
Screw terminal
: Nickel-plated steel
Isolation
: Input to output to power
Zero adjustment
: -5 to +5 % (front)
Span adjustment
: 95 to 105 % (front)
Opencircuit detection
: input current 0 mA when the output loop is open.
OUTPUT SPECIFICATIONS
The output goes below 0 % when the input is open.
INSTALLATION
Current consumption
: Approx. 50 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 %
Temp. coefficient
: ±0.015 %/°C (±0.008 %/°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
: 500 V AC @ 1 minute (input to output to power to ground )
EXTERNAL VIEW
EXTERNAL DIMENSIONS unit: mm [inch]
TERMINAL ASSIGNMENTS
SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM