Download ES 18DY Rev.4

Rack-mounted DCS Signal Conditioners 18-RACK
CURRENT LOOP SUPPLY
MODEL
18DY
MODEL & SUFFIX CODE SELECTION
18DY–A6❑–R
MODEL
INPUT
A : 4 – 20mA DC
OUTPUT SIGNAL 1
6 : 1 – 5V DC
OUTPUT SIGNAL 2
A : 4 – 20mA DC
6 : 1 – 5V DC
POWER INPUT
R : 24V DC
ORDERING INFORMATION
Specify code number. (e.g. 18DY-A66-R)
Functions & Features
• Powering a 4 – 20mA DC current loop •
Shortcircuit protection • Second channel output
available at the front terminals and at the Standard Rack connector • Fuse • Applicable to smart
transmitters
Typical Applications
• Various 2-wire transmitters
GENERAL SPECIFICATIONS
Construction: rack-mounted; terminal access via screw
terminals at the front and via connector
at the rear; terminal cover provided
Connection
Input: M3.5 screw terminals
Output 1: connector
Output 2: M3.5 screw terminals and connector
Power input: supplied from connector
Screw terminal material: nickel-plated steel;
torque ≤0.8 N·m
Power fuse: 0.5A
Isolation: input to output 1 to output 2 to power
Overrange output: approx. -10 – +120% at 1 – 5V
Front adjustments: zero and span; ±5%
P. 1 / 2
ES-1826 Rev.4
18DY
INPUT & OUTPUT
INSTALLATION
■SUPPLY OUTPUT
Output voltage: 24 – 28V DC with no load
Current rating: 22mA DC maximum
•Shortcircuit Protection
Current limited: 30mA maximum
Protected time duration: no limit
■INPUT:
4 – 20mA DC; input resistor incorporated
(2W)
Input resistance: 276Ω ±1%
Power input: 24V DC ±10% (ripple 10% p-p max.)
approx. 65mA with voltage output
approx. 95mA with current output
Operating temperature: -5 to +55°C (23 to 131°F)
Operating humidity: 30 to 90% RH (non-condensing)
Mounting: Standard Rack 18BX❑
Dimensions: W24×H110×D110 mm (0.94"×4.33"×4.33")
See General Spec. Sheet Figure A.
Weight:
150 g (0.33 lbs)
Terminal assignment: See General Spec. Sheet Figure B-1.
PERFORMANCE in percentage of span
■OUTPUT SIGNAL 1: 1 – 5V DC
Load resistance: 2000Ω minimum
Accuracy: ±0.1%
Temp. coefficient: ±0.015%/°C (±0.008%/°F)
Response time: ≤0.5 seconds (0 –␣ 90%)
Line voltage effect
Supply output: ±3% over voltage range
Output signal: ±0.1% over voltage range
Insulation resistance: ≥100MΩ with 500V DC
Dielectric strength: 1500V AC @1 minute
(input to output 1 or output 2 or power)
500V AC @1 minute
(output 1 to output 2 to power)
1500V AC @1 minute
(input or output or power to ground)
■OUTPUT SIGNAL 2
•DC Current: 4 – 20mA DC
Load resistance: 600Ω maximum
•DC Voltage: 1 – 5V DC
Load resistance: 2000Ω minimum
The output goes below 0% if the input loop is open.
SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM
Isolation
+
+ 1
–
– 2
S
Output
Driver
Current
Limiter
Voltage /
Duty Cycle
+
3
MONITOR V –
(1 – 5VDC)
Z
Z
250Ω
4
7
8
S
5 +
OUTPUT 2
6 –
Output
Driver
CONNECTOR
2-WIRE
TRANSMITTER
OUTPUT 1
OUTPUT 2
POWER
■When Used as Isolator
No Connection 1
+ 2
250Ω
4 – 20mADC
– 3
Specifications subject to change without notice.
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ES-1826 Rev.4