ES-3428 Rev.7
HDU
Space-saving Plug-in Signal Conditioners H-UNIT
CURRENT LOOP SUPPLY
(10 – 50 mA loop)
Functions & Features
• Powering a 10 – 50 mA DC current loop
• Isolation
• Shortcircuit protection
• Applicable to smart transmitters
• High-density mounting
Typical Applications
• Various 2-wire transmitters
MODEL: HDU–24–R[1]
ORDERING INFORMATION
• Code number: HDU-24-R[1]
Specify a code from below for [1].
(e.g. HDU-24-R/Q)
• Specify the specification for option code /Q
(e.g. /C01/S01)
SUPPLY OUTPUT
24
: 24 V DC
INPUT
Current
10 – 50 mA DC
OUTPUT
Voltage
1-5 V DC (Load resistance 50 kΩ min.)
POWER INPUT
DC Power
R
: 24 V DC
(Operational voltage range 24 V ±10 %, ripple 10 %p-p max.)
[1] OPTIONS
blank
: none
/Q
: With options (specify the specification)
SPECIFICATIONS OF OPTION: Q (multiple selections)
COATING (For the detail, refer to our web site.)
/C01
: Silicone coating
/C02
: Polyurethane coating
/C03
: Rubber coating
TERMINAL SCREW MATERIAL
/S01
: Stainless steel
GENERAL SPECIFICATIONS
Construction
: Plug-in
Connection
: M3.5 screw terminals (torque 0.8 N·m)
Screw terminal
: Nickel-plated steel (standard) or stainless steel
Housing material
: Flame-resistant resin (black)
Isolation
: Input to output to power
Overrange output
: Approx. -10 to +120 % at 1 – 5 V
Zero adjustment
: -5 to +5 % (front)
Span adjustment
: 95 to 105 % (front)
SUPPLY OUTPUT
Output voltage
: 24 – 28 V DC with no load
Current rating
: ≤ 55mA DC
•
Shortcircuit Protection
Current limited
: Approx. 65 mA
Protected time duration
: No limit
INPUT SPECIFICATIONS
Equivalent input impedance
: Approx. 100 Ω at 50 mA
INSTALLATION
Current consumption
: Approx. 100 mA
Operating temperature
: -5 to +55°C (23 to 131°F)
Operating humidity
: 30 to 90 %RH (non-condensing)
Mounting
: Surface or DIN rail; Standard Rack Mounting Frame BX-16H available
Weight
: 200 g (0.44 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
Supply output
: ±3 % over voltage range
Output signal
: ±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)
1500 V AC @ 1 minute (input or output or power to ground)
EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm [inch]
SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM