·Some details are not shown. Please refer to specification sheets for all information.

W2DYH

Space-saving Dual Output Signal Conditioners
Mini-MW Series

CURRENT LOOP SUPPLY
(applicable to HART signal)

Functions & Features
• Powers a 4 – 20 mA DC current loop
• Isolates and relays HART signals
• Shortcircuit protection
• High-density mounting
Typical Applications
• 2-wire HART transmitters

MODEL: W2DYH–24A[1]-[2][3]

ORDERING INFORMATION
• Code number: W2DYH-24A[1]-[2][3]
Specify a code from below for each [1] through [3].
(e.g. W2DYH-24AA-M2/Q)
• Specify the specification for option code /Q
(e.g. /C01/S01)

SUPPLY OUTPUT
24: 24 V DC

INPUT
Current
4 – 20 mA DC (Input resistance 250 Ω)

OUTPUT 1
Current
A: 4 – 20 mA DC (Load resistance 600 Ω max.) 
 225 - 600 Ω for HART communication

[1] OUTPUT 2
Y: None
Current
A: 4 – 20 mA DC (Load resistance 350 Ω max.)

[2] POWER INPUT
AC Power
M2: 100 – 240 V AC (Operational voltage range 85 – 264 V,
 47 – 66 Hz)
DC Power
R: 24 V DC
(Operational voltage range 24 V ±10 %, ripple 10 %p-p max.)
R2: 11 – 27 V DC
(Operational voltage range 11 – 27 V, ripple 10 %p-p max.)
P: 110 V DC
(Operational voltage range 85 – 150 V, ripple 10 %p-p max.)

[3] OPTIONS
blank: none
/Q: With options (specify the specification)

SPECIFICATIONS OF OPTION: Q (multiple selections)
COATING (For the detail, refer to M-System's web site.)
/C01: Silicone coating
/C02: Polyurethane coating
/C03: Rubber coating
TERMINAL SCREW MATERIAL
/S01: Stainless steel

GENERAL SPECIFICATIONS
Construction: Plug-in
Connection: M3 screw terminals (torque 0.8 N·m)
Screw terminal: Chromated steel (standard) or stainless steel
Housing material: Flame-resistant resin (black)
Isolation: Input to output 1 to output 2 to power
Overrange output: Approx. -10 to +110 %
Zero adjustment: -5 to +5 % (front)
Span adjustment: 95 to 105 % (front)
Adjustable individually for each output 1 and output 2.

SUPPLY OUTPUT
(across the terminals 1 – 4)
Output voltage: 24 – 28 V DC with no load
18 V DC min. at 20 mA
Current rating: ≤ 22 mA DC
Shortcircuit Protection
Current limited
: 30 mA max.
Protected time duration: No limit

INPUT SPECIFICATIONS
DC Current: Input resistor incorporated

HART COMMUNICATION
Frequency band: 500 Hz – 10 kHz (within -10 dB)
Transmission gain: Approx. -3 dB (within 1 – 3 kHz)
measured with 250 Ω at output
Loop impedance: 250 Ω ±10 %
Communication directions: Bidirectional
(HART communication not available for Output 2)

INSTALLATION
Power Consumption
AC:
 Approx. 5 VA at 100 V
 Approx. 6 VA at 200 V
 Approx. 7 VA at 240 V
DC: Approx. 3 W
Operating temperature: -5 to +55°C (23 to 131°F)
Operating humidity: 30 to 90 %RH (non-condensing)
Mounting: Surface or DIN rail
Weight: 200 g (0.44 lb)

PERFORMANCE in percentage of span
Accuracy: ±0.1 %
Temp. coefficient: ±0.015 %/°C (±0.008 %/°F)
Response time
  Output signal 1: ≤ 0.5 sec. (0 – 90 %)
  Output signal 2: ≤ 0.2 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: 2000 V AC @1 minute (input to output
1 to output 2 to power to ground)

DIMENSIONS unit: mm (inch)

SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM

M-System Co., Ltd.