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

M2DYHR

Super-mini Signal Conditioners Mini-M Series

CURRENT REPEATER
(applicable to HART signal, opencircuit detection selectable)

Functions & Features
• Isolation between 2-wire transmitters and current loop supplies
• Isolates and relays HART signals
• Shortcircuit protection
• Opencircuit detection selectable
• Applicable to smart transmitters
Typical Applications
• 2-wire HART transmitters

MODEL: M2DYHR–24–[1][2]

ORDERING INFORMATION
• Code number: M2DYHR-24-[1][2]
 Specify a code from below for each [1] and [2].
  (e.g. M2DYHR-24-M2/B/CE/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 approx. 250 Ω)

OUTPUT
Current
4 – 20 mA DC (Supply voltage: 12 – 32 V DC)

[1] 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.)
(Select ‘/N’ for ‘Standards & Approvals’ code.)
P: 110 V DC
(Operational voltage range 85 – 150 V, ripple 10 %p-p max.)

[2] OPTIONS (multiple selections)
Opencircuit detection
blank: none
/B: Opencircuit detector
Standards & Approvals (must be specified)
/N: Without CE
/CE: CE marking
Other Options
blank: none
/Q: Option other than the above (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 to power
Overrange output: Approx. -10 to +110 %
Zero adjustment: -5 to +5 % (front)
Span adjustment: 95 to 105 % (front)
Opencircuit detection: Input current 0 mA when the output loop is open.
Photo MOS Relay ON Resistance; 3 Ω max.

SUPPLY OUTPUT
(across the terminals 1 – 5)
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

OUTPUT SPECIFICATIONS
■ Load resistance vs. supply voltage:
Load Resistance (Ω) = (Supply Voltage (V) – 12 (V)) ÷ 0.02 (A)
(including leadwire resistance)
250 Ω ±10 % for HART communication

HART COMMUNICATION
Transmission gain: Approx. -3 dB (within 1 – 3 kHz)
measured with 250 Ω at output
Loop impedance: 250 Ω ±10 %
Communication directions: Bidirectional

INSTALLATION
Power Consumption
AC:
 Approx. 4 VA at 100 V
 Approx. 6 VA at 200 V
 Approx. 7 VA at 264 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: 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
  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 to power to ground)

STANDARDS & APPROVALS
EU conformity:
EMC Directive 
  EMI EN 61000-6-4
  EMS EN 61000-6-2
Low Voltage Directive
  EN 61010-1
  Installation Category II
  Pollution Degree 2
  Input or output to power: Reinforced insulation (300 V)
  Input to output: Basic insulation (300 V)
RoHS Directive
  EN 50581

EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm (inch)

SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM

M-System Co., Ltd.