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

MDC

Plug-in Signal Conditioners M-UNIT

EXCITATION SUPPLY

Functions & Features
• Highly regulated DC power supply
• Output voltage fully adjustable over its entire span
• MDC-3 features separate regulated and unregulated outputs
• Powering up to three standard 4 – 20 mA loops simultaneously
• Shortcircuit protection
• Highdensity mounting
Typical Applications
• Strain gauge bridge excitation
• Voltage reference and general-purpose power supply needs
• Various 2-wire transmitters
 

MODEL: MDC–[1]–[2][3]

ORDERING INFORMATION
• Code number: MDC–[1]–[2][3]
Specify a code from below for each [1] through [3].
(e.g. MDC-1-B/Q)
• Specify the specification for option code /Q
  (e.g. /C01/S01/SET)

[1] SUPPLY OUTPUT
1: 3 – 15 V DC adjustable
2: 5 – 30 V DC adjustable
3: 24 V DC regulated and 40 V DC unregulated

[2] POWER INPUT
AC Power
B: 100 V AC
C: 110 V AC
D: 115 V AC
F: 120 V AC
G: 200 V AC
H: 220 V AC
J: 240 V AC

[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
EX-FACTORY SETTING
/SET: Preset according to the Ordering Information Sheet
 (No. ESU-9222)

GENERAL SPECIFICATIONS
Construction: Plug-in
Connection: M3.5 screw terminals
Screw terminal: Chromated steel (standard) or stainless steel
Housing material: Flame-resistant resin (black)
Isolation: Output to power

SUPPLY OUTPUT
Output voltage:
  MDC-1: 3 – 15 V DC (adjustable on front) 
  (If not specified the default value is used 12V DC)
  MDC-2: 5 – 30 V DC (adjustable on front)
  (If not specified the default value is used 24V DC)
  MDC-3: 24 V DC regulated and 40 V DC unregulated
Load current:
  MDC-1, -2: ≤ 50 mA
  MDC-3: ≤ 65 mA (for the total of both outputs)
Shortcircuit Protection
 MDC-1, -2
   Current limited
: 65 mA max.
   Protected time duration: No limit
 MDC-3
   Current limited
: 85 mA max. at 24 V
   Protected time duration: No limit

INSTALLATION
Power input
AC: Rating ±10 %, 50/60 ±2 Hz
  Approx. 2 VA for MDC-1
  Approx. 3.5 VA for MDC-2, -3
Operating temperature: -5 to +60°C (23 to 140°F)
Operating humidity: 30 to 90 %RH (non-condensing)
Mounting: Surface or DIN rail
Weight: 290 g (0.64 lb)

PERFORMANCE in percentage of span
Temp. coefficient:
  MDC-1, 2: ±0.03 %/°C (±0.02 %/°F)
  MDC-3: ±0.03 %/°C (±0.02%/°F) at 24 V
Ripple:
 MDC-1, 2: 15 mVp-p max. at 50 mA output
 MDC-3: 15 mVp-p max. at 24 V/65 mA output
Load effect:
  MDC-1, 2: -0.1 % or -5 mV, whichever is greater as absolute value with 0 – 50 mA variation
  MDC-3: -0.1 % max. with 0 – 65 mA variation at 24 V
Line voltage effect:
 MDC-1, 2: -±0.5 % over voltage range
 MDC-3: ±0.5 % over voltage range at 24 V
Insulation resistance: ≥ 100 MΩ with 500 V DC
Dielectric strength: 2000 V AC @ 1 minute (output to power to ground)

EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm (inch)

SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM

M-System Co., Ltd.