ES-3251 Rev.3
DS-824
Plug-in Signal Conditioners M-UNIT
8-CH. CURRENT LOOP SUPPLY
Functions & Features
• Powering eight 4 – 20 mA DC current loops
• Supplying 24 V DC
• Space-saving 8-channel capacity
• Shortcircuit protection
• Smart transmitter applicable
Typical Applications
• Various two-wire transmitters
MODEL: DS–824–R
ORDERING INFORMATION
• Code number: (e.g. DS-824-R)
NO. OF CHANNELS
8
: 8 points
SUPPLY OUTPUT
24
: 24 V DC
POWER INPUT
DC Power
R
: 24 V DC
GENERAL SPECIFICATIONS
Construction
: Wall-mounted terminal block
Connection
: M3.5 screw terminals
Number of loops
: 8
SUPPLY OUTPUT
Output voltage
: 15 – 21 V DC
= power input – [internal voltage drop + loss at the receiving resistor]
Current rating
: ≤ 22 mA DC
•
Shortcircuit Protection
Current limited
: 30 mA max.
Protected time duration
: No limit
INPUT SPECIFICATIONS
■
DC Current
: 4 – 20 mA DC
Input resistance: 250 Ω resistor incorporated
OUTPUT SPECIFICATIONS
■
DC voltage
: 1 – 5 V DC
Load resistance
: ≥ 250 kΩ
INSTALLATION
Power input
•
DC
:
24 V DC ±10 % (ripple 10 % p-p max.)
[loop current + approx. 4 mA] per channel
Operating temperature
: -5 to +60°C (23 to 140°F)
Operating humidity
: 30 to 90 %RH (non-condensing)
Mounting
: Surface
Weight
: 380 g (0.84 lb)
PERFORMANCE in percentage of span
Accuracy
: ±0.1 % (accuracy of the receiving resistor)
Temp. coefficient
: ±0.003 %/°C (±0.002 %/°F) (temp. coefficient of the receiving resistor)
Line voltage effect to supply output
: ±3 % over voltage range
EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm [inch]
SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM