M2EXR Super-mini Signal Conditioners

with Display Mini-M M2E Series

RTD TRANSMITTER
(PC programmable)

Functions & Features
• Accepts direct input from a RTD and provides a linearized process signal
• Adjustments with the front button
• Wide selection of RTD
• Leadwire resistance compensation
• OEL display with good visibility
Typical Applications
• Long distance transmission between the RTD and the transmitter
 

MODEL: M2EXR–[1][2]

ORDERING INFORMATION
• Code number: M2EXR-[1][2]
Specify a code from below for each [1] and [2].
  (e.g. M2EXR-M2/Q)
• Specify the specification for option code /Q
  (e.g. /C01/S01/SET)

INPUT – Field-selectable
RTD
JPt 100 (JIS'89), Pt 100 (JIS'89), Pt 100 (JIS'97, IEC),
Pt 50Ω (JIS'81), Ni 508.4Ω, Pt 1000, Ni 100, Cu 10 @ 25℃

OUTPUT – Field-selectable
◆ DC Output
• Current output: 0 - 20 mA DC
• Voltage output: -5 - +5 V DC
• Voltage output: -10 - +10 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.)
P: 110 V DC
(Operational voltage range 85 – 150 V, ripple 10 %p-p max.)

[2] 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-5144)

RELATED PRODUCTS
• M2E configurator software (model: M2ECFG)
Downloadable at M-System’s web site.
A dedicated cable is required to connect the module to the PC.  Please refer to the internet software download site or the users manual (EM-5147) for the M2E configurator for applicable cable types.

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 (gray)
Isolation: Input to output to power
Overrange output: Approx. -10 to +110 % (Not available for current output not greater than 0 mA)
Input zero fine adj. range: -10 to +10℃ (front button)
Input span fine adj. range: -10 to +10℃ (front button)
Output zero fine adj. range: -5 to +5% (front button)
Output span fine adj. range: 95 to 105% (front button)
Burnout protection: Upscale standard; downscale or no burnout optional by programming
Linearization: Standard
Output setting: DIP Switch on side panel (refer to the instruction manual)
Configuration: Program with front buttons or Via PC.
Programmable features include: Refer to the parameter list.
Configurator connection: 2.5 dia. miniature jack;
RS-232-C level

DISPLAY
Display functions: Displays and sets measured range, engineering unit
Display size: Approx. 15.6 × 20.8 mm (0.61” × 0.82”)
Number of pixels: 68 × 95 (horizontal × vertical)
Character color: Yellow
Display life: Approx. 60000 hours
(Expected time for the Display brightness to be reduced to 50 % when the Display is used continuously with brightness setting 2 in 25 ℃)
Display type: OEL display
Display digit: Negative 5 digits, positive 6 digits (-99999 to 999999)
Decimal point position:
· Input display: None, number of decimal places 1 or 2
· Output display: Settable arbitrarily

INPUT SPECIFICATIONS
Input: 2- or 3-wire RTD
Maximum leadwire resistance: 50 Ω per wire
Sensing current:
　Pt 100, JPt 100, Pt 50 Ω, Ni 100, Cu 10: approx. 1.0 mA
　Pt 1000, Ni 508.4 Ω: approx. 0.2 mA
Measurement rang: -5 to +105% of input setting value
Refer to the operating manual (EM-5144-B) for changing input range, setting value.

OUTPUT SPECIFICATIONS
■ DC Current
Output range: 0 – 20 mA DC
Conformance range: 0 – 22mA DC
Minimum span: 1 mA
Offset: Lower range can be any specific value within the output range provided that the minimum span is maintained.
Load resistance: Output drive 15 V max.
(Not available to output less than 0 mA, output range may not be extended to -10 %)
■ DC Voltage
Output range: -5 - +5 V DC, -10 - +10 V DC
Conformance range: -6.0 - +6.0 V DC, -12 - +12 V DC
Minimum span: 250 mV, 1 V
Offset: Lower range can be any specific value within the output range provided that the minimum span is maintained.
Load resistance: Output drive 1 mA max.

INSTALLATION
Power Consumption
•AC:
 Max. 4.5 VA at 100 V
 Max. 6.5 VA at 200 V
 Max. 8.5 VA at 264 V
•DC: Max. 2.3 W
Operating temperature: -5 to +55°C (23 to 131°F)
Operating humidity: 10 to 85 %RH (non-condensing)
Mounting: Surface or DIN rail
Weight: Approx. 200 g (0.44 lb)

PERFORMANCE
Overall accuracy: Input accuracy + output accuracy
Inversely proportional to the span.
See CALCULATION EXAMPLES OF OVERALL ACURACY.
• Input accuracy:
 Input accuracy of table 1 or ±0.1 % of span, whichever is greater.
  Pt, JPt: ±0.15℃
  Ni: ±0.2℃
  Cu10: ±1.0℃
• Display accuracy:
 Input display: Input accuracy ±1 digit
 Output display: Input accuracy + output accuracy ±1 digit
• Output accuracy: ±0.04 % of max. output range
Temp. coefficient: ±0.015 %/°C (±0.008 %/°F) of max. span
Input resolution: Max. 18 bits
Output resolution: Max. 16 bits
Response time (filter time constant: 0 sec.): ≤ 0.5 sec.
(0 – 90 %)
Burnout response: ≤ 10 sec.
Line voltage effect: ±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)

CALCULATION EXAMPLES OF OVERALL ACCURACY
[Example] Input Range Pt 100 (JIS'97, IEC) RTD, 0 – 100°C,
Output Range 0 – 20 mA, Output Setting 4 – 20 mA
■ Overall accuracy
• Input Accuracy
1) Absolute value accuracy (Table 1): 0.15°C
2) 0.15°C ÷ 100°C × 100 = 0.15 %
3) 0.15 % > 0.1 % of span. ➠ 0.15 % is selected.
• Output Accuracy = Output Range Span (20 mA) ÷ Output Span Setting (16 mA) × 0.04 % = 0.05 %
Overall Accuracy = 0.15 + 0.05 = ±0.2 %

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 VIEW
Refer to the operating manual (EM-5144-B) for detailed procedures.
PARAMETER LIST
EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm (inch)
SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM